From: owner-krnet-l-digest@teleport.com[SMTP:owner-krnet-l-digest@teleport.com] Sent: Saturday, March 21, 1998 6:52 PM To: krnet-l-digest@teleport.com Subject: krnet-l-digest V2 #57 krnet-l-digest Saturday, March 21 1998 Volume 02 : Number 057 ---------------------------------------------------------------------- Date: Thu, 19 Mar 1998 16:28:16 -0800 From: Ross Youngblood Subject: Re: KR: Re: KR Parachutes Mike Sharkey wrote: > Just make sure your canopy can open even when inverted at high speed! A former > member of my glider club recently got into a midair during a competition and > lost her entire tail section -- she was wearing a chute. During the resulting > high speed descent, she was unable to open her forward opening canopy due to > the presure from an inverted high speed descent. Luckly, her card wasn't up as > she hit some tree branches that broke her fall, then landed inverted with the > nose and remaining tail section suspending the canopy over a ditch, she was up > busted up pretty good, but she's ok. The point is, she was wearing a chute, > but couln't exit the aircraft due to the canopy configuration. > > Mike Sharkey > X11 Development > SoftArc Inc. > http://www.softarc.com/~msharkey Mike, Your point is well taken, in that case a BRS chute would have been a better choice. Also, in some cases it is better to ride it out rather than jump, and if I run off the runway and hit a fence, then neither a BRS or parachute will work, so perhaps some airbags? At any rate, a local EAAer did his first flight with a parachute, and I thought it might be useful to check into them. -- Regards Ross ------------------------------ Date: Thu, 19 Mar 1998 16:31:41 -0800 From: Ross Youngblood Subject: Re: KR: Flight Suite Website Dana, You can actually buy pre-soiled flight suits from one of the sites at a discount. If I do actually "*buy*" a parachute, instead of borrow one, I think I can make it available for loan. -- Regards Ross KR2 616TJ wrote: > In a message dated 98-03-19 14:16:08 EST, you write: > > << > For the Best Dressed Test Pilot... > > New & Used Nomex Flight Suits > http://www.imsplus.com/ims27.html > > Can you tell I'm getting psyched up! > > -- Ross >> > > Boy Ross, at least you will look the part as you strut across the "tarmac". > > P.S. Don't tell anyone, but can I borrow the chute and suit come my turn this > summer. I wash the suit afterwards. Reminds me of the used Iraq tank > commanders underware for sale.......slightly soiled. > > Dana Overall > Richmond, KY > kr2616tj@aol.com > http://www.geocities.com/CapeCanaveral/Hangar/7085/ ------------------------------ Date: Thu, 19 Mar 1998 16:39:45 -0800 From: Ross Youngblood Subject: Re: KR: Flight Suite Website Steve, You might have somthing here. However, if the chute were to fail... who would be responsible? I may check with a lawyer about this. But it seems like a good idea on the surface. -- Ross Steven A Eberhart wrote: > On Thu, 19 Mar 1998, KR2 616TJ wrote: > > > In a message dated 98-03-19 14:16:08 EST, you write: > > > > << > > For the Best Dressed Test Pilot... > > > > New & Used Nomex Flight Suits > > http://www.imsplus.com/ims27.html > > > > Can you tell I'm getting psyched up! > > > > -- Ross >> > > > > Boy Ross, at least you will look the part as you strut across the "tarmac". > > > > P.S. Don't tell anyone, but can I borrow the chute and suit come my turn this > > summer. I wash the suit afterwards. Reminds me of the used Iraq tank > > commanders underware for sale.......slightly soiled. > > > > Is the start of the traveling test flight kit :-) > > Steve ------------------------------ Date: Thu, 19 Mar 1998 16:50:27 -0800 From: Ross Youngblood Subject: Re: KR: Re: KR Parachutes Richard Parker wrote: one wing just departed your airplane, (which takes you a few seconds to > realize becasue your stomach is in your throat) > you are spinning fast, > you are gonna pull the hinge pin, watch the canopy fly off, (which takes > your tail off) > you are going to undo your seat belt. > pull your legs out from under the panel, > hoist your self up onto the seat, ( after that big breakfast which is > protruding from your stomach) > jump away from the plane ( probably straight toward the ground if you arent > there already) > Pull your chute. ( which may of may not be the first time in your life, if > you remembered to put it on) > > you do all that from 3000' > > I'd think about a BRS or just plan on riding the sucker in. Well, I take this as an endorsement of the BRS. I think that having the option of using a chute or riding the plane down might be useful since I don't have the BRS installed. Besides it's 1/3 of the cost, and if the wing comes off, do I want to keep the rest of the plane anyway? Most of the incidents I consider likely will occur too close to the ground for either the BRS or a chute to be of much use. (I'm assuming that the rocket propelled BRS has a similar altitude requirement to a personal chute... ie, it might not be useful below pattern altitudes). ------------------------------ Date: Thu, 19 Mar 1998 20:22:13 -0500 From: "Richard Parker" Subject: Re: KR: Re: KR Parachutes ......... >Most of the incidents I consider likely will occur too close to >the ground for either the BRS >or a chute to be of much use. (I'm assuming that the rocket propelled BRS has >a similar altitude requirement >to a personal chute... ie, it might not be useful below pattern altitudes). The BRS chutes I've flown with need as little as 50 feet to deploy and land safely. Yeah they are expensive, I probably wont have one unless I can get a second hand one (not used) I wonder if my insurance premium would be less? sort of like Lo-Jack. Rich Parker ------------------------------ Date: Thu, 19 Mar 1998 20:22:38 EST From: XZOSTD1 Subject: KR: Parachute Stuff All this parachute talk caused me to dig out my BRS owners manual. BRS says" In some of the life-saving situations BRS has experienced, the individual deploying the system felt that he or she was less than 100' above the ground. Yet the deployment was full and successful" This quote was then followed with a disclaimer. In their literature they do list many saves occuring at low altitudes. My vote is still with the ballistic chute. Bill Huntley (packing for Sun-N-Fun) KR2S , Green Bay, WI. ------------------------------ Date: Thu, 19 Mar 1998 21:25:56 -0600 From: "Pdrdean" Subject: KR:exhaust tape alternative? For what it's worth - I was paging through the latest issue of Popular Mechanics at lunch today and ran across this new product called a "Temp Tamer." These things are essentially sleeves that go around the headers in high performance cars to keep the heat under the hood down to a minimum. The thing that struck me is that they would be easy to install and intermittently inspect. They appear to be fabric socks that wrap around header pipes. They are attached near the exhaust port with a simple clamp and then have several small metal clips that hold the edges together. PM says that the price for a 4 or 6 cyl set is about $74. The company that makes them is called Thermo -Tec. (800-274-8437). The description doesn't list any details or specs, but it seems like something worth checking out. Dean drdean@execpc.com ------------------------------ Date: Thu, 19 Mar 1998 21:54:57 -0600 From: brian whatcott Subject: Re: KR: Balancing At 07:31 3/19/98 -0600, you wrote: >Anyone have experience with dynamically balancing a prop with an engine? >I've heard from one source that it's the way to go. Supposedly really >smooths out the engine/prop configuration and probably eases the load on >the crank. > >Ed Janssen > > > S'funny. I just don't want to deal with the flames. Like Rossy's burn-out possibly. The KRnet is not the same as it was. Think I'll give it a rest. ------------------------------ Date: Thu, 19 Mar 1998 19:54:48 -0800 From: Micheal Mims Subject: KR: More Progress Hey sports fans I just wanted to post some of my progress in hope that it will motivate someone somewhere! :o) I disassembled all the WAFs on the outer main spars today and painted them with zinc chromate, I sealed the wood under the WAFs with epoxy and used a small syringe to pump epoxy into the holes in the spar cap. After about an hour in the sun the WAFs were dry and ready to re-install. Everything went back together great and it looks good to boot! To bad you cant see them once the airplane is done! I drilled the holes for the motor mount bolts today and also finished making the 4130 brackets for the bottom mount locations. I applied filler to the stub wings so maybe I will be able to sand them this weekend. I mounted the throttle and mixture control cables. This is the kind of stuff I call fun stuff! I guess because its fun to mount these kinds of things that make it feel more like an airplane (throttle cables, control cables, wheels and brakes etc.) This weekend I plan to finish up the right aft outer spar. Then I can taper them both and get them ready to mount following the application of the center foam core. It was kinda fun to clamp the aft spar into place today and staple the plywood rib template to the tip and try to visualize a wing! All in all it was just a FUN day! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Micheal Mims Proud Member of the Area 51 BBA mailto:mikemims@pacbell.net http://home.pacbell.net/mikemims mirror site at : http://www.geocities.com/CapeCanaveral/Hangar/4136/ Fax 714.856.9417 ------------------------------ Date: Fri, 20 Mar 1998 02:25:10 EST From: MikeT nyc Subject: KR: Re: KR Parachutes >one wing just departed your airplane, (which takes you a few seconds to > >> realize becasue your stomach is in your throat) >> you are spinning fast, >> you are gonna pull the hinge pin, watch the canopy fly off, (which takes >> your tail off) >> you are going to undo your seat belt. >> pull your legs out from under the panel, >> hoist your self up onto the seat, ( after that big breakfast which is >> protruding from your stomach) >> jump away from the plane ( probably straight toward the ground if you arent >> there already) >> Pull your chute. ( which may of may not be the first time in your life, if >> you remembered to put it on) >> >> you do all that from 3000' >> >> I'd think about a BRS or just plan on riding the sucker in. > > Well, I take this as an endorsement of the BRS. > >I think that having the option of using a chute or riding the plane down >might >be useful since I don't have >the BRS installed. Besides it's 1/3 of the cost, and if the wing comes off, >do >I want to keep the rest of the >plane anyway? Most of the incidents I consider likely will occur too close >to >the ground for either the BRS >or a chute to be of much use. (I'm assuming that the rocket propelled BRS >has >a similar altitude requirement >to a personal chute... ie, it might not be useful below pattern altitudes). What kinds of "incidents" are you guys anticipating during your first flights, anyway? I know that some of the planes on this list are effectively new designs, and maybe those folks have to be more careful, but if you're building a reasonably "normal" KR, and you make sure the flight controls are free and correct during preflight, your basic structure is well proven. The worst-case scenario is probably an engine out, and this is a plane with a relatively slow stall speed that's pretty easy to force-land. According to an article I saw in one of the old Newsletters, Ken Rand's original plane had a magneto that was so old it would fail when it got hot and he had to dead-stick almost all of his early flights. So why not just forget this stuff and fly the thing? Plenty of time for parachutes, etc., when you're establishing your Vne by test. . . . Mike Taglieri ------------------------------ Date: Fri, 20 Mar 1998 02:25:06 EST From: MikeT nyc Subject: Re: KR: my wood arrived today >> My wood arrived today and I have no interruptions for this weekend. >> >> I dont remember being this excited when I got the wood for my >> deck.AARP >> (the Association for the Advancement of Richard Parker Get a big enough engine on that deck and the right angle of attack, and who knows? Mike Taglieri ------------------------------ Date: Fri, 20 Mar 1998 06:16:41 -0500 From: "Richard Parker" Subject: Re: KR:exhaust tape alternative? - -----Original Message----- From: Pdrdean To: KRNET Date: Thursday, March 19, 1998 10:21 PM Subject: KR:exhaust tape alternative? >For what it's worth - > >I was paging through the latest issue of Popular Mechanics at lunch today >and ran across this new product called a "Temp Tamer." These things are >essentially sleeves that go around the headers in high performance cars to >keep the heat under the hood down to a minimum. > >The thing that struck me is that they would be easy to install and >intermittently inspect. They appear to be fabric socks that wrap around >header pipes. They are attached near the exhaust port with a simple clamp >and then have several small metal clips that hold the edges together. PM >says that the price for a 4 or 6 cyl set is about $74. > >The company that makes them is called Thermo -Tec. (800-274-8437). The >description doesn't list any details or specs, but it seems like something >worth checking out. > >Dean Summit Racing has reflective ceramic header coatings that can be sprayed on then baked in a 500f oven or baked by engine heat. AARP (the Association for the Advancement of Richard Parker) ------------------------------ Date: Fri, 20 Mar 1998 09:12:54 -0800 From: Tom Crawford Subject: Re: KR: Balancing Ed Janssen wrote: > > Anyone have experience with dynamically balancing a prop with an engine? > I've heard from one source that it's the way to go. Supposedly really > smooths out the engine/prop configuration and probably eases the load on > the crank. > > Ed Janssen Ed, I met a guy in my EAA group last Tuesday who does this sort of balancing. I have heard it makes a big difference. I am going to let him do mine, I will give you a full report after. Tom Crawford tomc@afn.org Gainesville, FL N262TC ------------------------------ Date: Fri, 20 Mar 1998 06:20:02 PST From: "Oscar Zuniga" Subject: KR: Parachutes Mike T wrote: >What kinds of "incidents" are you guys anticipating during your first flights, >anyway? Hi, Mike It's not that guys are planning to pull major Gs on first flights, it's that sometimes we lose sight of the fact that there are folks out there building who maybe shouldn't be. That's the cost of the freedoms we enjoy. I have seen a KR, built "to plans", that is a flying deathtrap- no exaggeration. It does not have experimental airfoils or components, it's just flat poorly built. True, it will never fly (it's the one that got wet and is now ruined), but had it ever flown, doing one circuit of the pattern would have been the best I'd ever expect. Flying off 40 hrs., as the owner began to probe the airplane's performance envelope, well- that would have been a miracle. Even the best-built planes can experience "epoxy holidays", loose fasteners, pulled-out fittings, or ??? during those exploratory flights where you start to document stall series, steep turns, or higher speeds. It's not necessarily aerobatics we're talking about, it's just normal-category flying coupled with a building glitch or funky WAFs or a million other little things. Then there are the really experimental things! One of the old Newsletters documents a fatal crash where the guy-gal building team took some "recycled" spars which had cracked, did a repair, and built a plane around them. Need I say more? I hadn't thought of flying with a chute, but it's probably not a bad thing to have to put up with during the first 40 hrs. I think my problem would be like in my motorcycle days: after a spill, I'd go running wildly over to see how badly my pegs and pipes were dinged, forgetting my own mangled body and dripping blood. Wonder how you stand the pain of slowly drifting down on your chute, watching a couple thousand hours' work and the work of your own hands go ripping into the ground? I wonder if there's ever been a case where an exuberant builder, on first flight doing a "victory roll", drilled it in? (No doubt doing a war whoop after getting airborne). That's one of the things I think Rick should include in his Flight Test material- somewhere in there a guy has gotta be allowed to let out a genuine Yahooooo! Oscar Zuniga Medford, Oregon ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Fri, 20 Mar 1998 06:24:21 PST From: "Oscar Zuniga" Subject: KR: Gas masks Hey, Ross- Thanks for the mil surplus website. Notice they also have the infamous Israeli gas masks for $16.95; a while back there was a post here about a home-made fresh air system for use while working with paint or other noxious stuff. It involved a cheap shop vac, some hose, and a surplus gas mask, and I printed it out for my "keepers" file. The Israeli one looks ideal, since the mask tapers to a "snoot" which would be perfect for hooking up to a hose. Another of my mail-order outfits suggests you stock your hunting camp outhouse with one of those puppies. ;o) Oscar Zuniga Medford, Oregon ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Fri, 20 Mar 1998 09:02:45 -0700 From: cartera@cuug.ab.ca Subject: Re: KR: Re: KR Parachutes MikeT nyc wrote: > > >one wing just departed your airplane, (which takes you a few seconds to > > > >> realize becasue your stomach is in your throat) > >> you are spinning fast, > >> you are gonna pull the hinge pin, watch the canopy fly off, (which takes > >> your tail off) > >> you are going to undo your seat belt. > >> pull your legs out from under the panel, > >> hoist your self up onto the seat, ( after that big breakfast which is > >> protruding from your stomach) > >> jump away from the plane ( probably straight toward the ground if you arent > >> there already) > >> Pull your chute. ( which may of may not be the first time in your life, if > >> you remembered to put it on) > >> > >> you do all that from 3000' > >> > >> I'd think about a BRS or just plan on riding the sucker in. > > > > Well, I take this as an endorsement of the BRS. > > > >I think that having the option of using a chute or riding the plane down > >might > >be useful since I don't have > >the BRS installed. Besides it's 1/3 of the cost, and if the wing comes off, > >do > >I want to keep the rest of the > >plane anyway? Most of the incidents I consider likely will occur too close > >to > >the ground for either the BRS > >or a chute to be of much use. (I'm assuming that the rocket propelled BRS > >has > >a similar altitude requirement > >to a personal chute... ie, it might not be useful below pattern altitudes). > > What kinds of "incidents" are you guys anticipating during your first flights, > anyway? I know that some of the planes on this list are effectively new > designs, and maybe those folks have to be more careful, but if you're building > a reasonably "normal" KR, and you make sure the flight controls are free and > correct during preflight, your basic structure is well proven. The worst-case > scenario is probably an engine out, and this is a plane with a relatively slow > stall speed that's pretty easy to force-land. According to an article I saw > in one of the old Newsletters, Ken Rand's original plane had a magneto that > was so old it would fail when it got hot and he had to dead-stick almost all > of his early flights. So why not just forget this stuff and fly the thing? > Plenty of time for parachutes, etc., when you're establishing your Vne by > test. . . . > > Mike Taglieri Right on, well said - you can get carried away with this kind of thing. The more you try to prevent something the more you encourage it. Keep it simple and light and fly like hell!!!! ;-) - -- Adrian VE6AFY cartera@cuug.ab.ca http://www.cuug.ab.ca/~cartera ------------------------------ Date: Fri, 20 Mar 1998 08:21:49 -0800 From: Micheal Mims Subject: Re: KR: Re: KR Parachutes At 02:25 AM 3/20/98 EST, you wrote: >What kinds of "incidents" are you guys anticipating during your first flights, >anyway? I know that some of the planes on this list are effectively new >designs, and maybe those folks have to be more careful, but if you're building >a reasonably "normal" KR, and you make sure the flight controls are free and >correct during preflight, your basic structure is well proven.>>>>> Thank you Mike T!! I was wondering about this myself. Well said dude. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Micheal Mims Proud Member of the Area51 BBA mailto:mikemims@pacbell.net http://home.pacbell.net/mikemims Mirror site at: http://www.geocities.com/CapeCanaveral/Hangar/4136/ Fax 714.856.9417 ------------------------------ Date: Fri, 20 Mar 1998 13:52:42 EST From: BSHADR Subject: KR: Horsepower, etc. KRNetheads: This is a post from the DragonFly list. Most interesting reading. Justin is a long time DFlyer and is well respected as well as very experienced with VW class of engines. If I recall correctly, he started with a VW and has changed engines like I change socks - on a regular basis (well...every year or two). :-) Randy Stein BSHADR@aol.com Soviet Monica, CA |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| From: jmace@flash.net (Justin Mace) >In regards to Glen question...( Able Exp. Aircraft engines??)...Anyone can comments on these specs??? > > >Size Bore x Stroke Horsepower Wt. (lbs.) >Price > > 2.11 L 90.5mmX82mm 100 @ 3000 rpm 170 lbs. $5,870.00 > > 2.18 L 92.0mmX82mm 104 @ 3000 rpm 170 lbs. $5,980.00 > > 2.39 L 94.0mmX86mm 114 @ 3000 rpm 178 lbs. $6,450.00 > > 2.44 L 94.0mmX88mm 120 @ 3000 rpm 180 lbs. $6,650.00 I would like to make a short comment. Using a HP calculation program available from the MSD injection people, which by the way produced numbers almost exactly the same as the auto makers and Lycoming and Continental, the above numbers look a little inflated. The following numbers are suppose to be + or - 3% 2.11 L 100 @ 3000 rpm should read 100 @ 4500 rpm 66 @ 3000 2.18 L 104 @ 3000 rpm " " 104 @ 4535 rpm 68 @ 3000 2.39 L 114 @ 3000 rpm " " 114 @ 4535 rpm 75 @ 3000 2.44 L 120 @ 3000 rpm " " 120 @ 4700 rpm 77 @ 3000 The only way to find out is to put a propeller on and see if it will really do the work. Mark Snow and I flew back to KS together, read that side by side he in his O-200 powerd DF and me in my Legacy EJ-22 powered DF. We were both showing 19 to 20" MP. If I recall correctly he was at 2800 rpm and I was at 4400 rpm. The Continental numbers for an O-200 at 2750 rpm is 100 hp or very close. The Subaru numbers for an EJ-22 @ 4400 is 100 hp. We flew side by side for 3 hrs and both burned the same amount of fuel. The speed on TWO GPS units was 130 to 135 kts. We were at altitude so the hp was reduced by about 25 to 30 % An interesting side note to the above numbers is that the MSD program also shows both the Continental O-200 and the Legacy EJ-22 to both be putting out 100 hp at the respective rpm's. With that said, you can believe what you will, it won't change the facts. Either the engine will produce the rated hp or it won't. Justin Mace flying NX764JM P.S. I am installing an O-200 now. It's 100 lbs lighter than the EJ-22 for the same hp. The EJ-22 will put out 130 hp at 5600 rpm but I am not willing to run it that hard for 1000 hrs. ------------------------------ Date: Fri, 20 Mar 1998 12:49:26 PST From: "RONALD CANNOLES" Subject: Re: KR: Flight Suite Website Flight suits out of calf does a good job.They do all of our flight suits for the A-10 east demo team. Their # is 1-800-748-6693 Ext 206 ask for Charlie our web site is www.moody.af.mil/og/70th/index Ron >Date: Thu, 19 Mar 1998 11:07:16 -0800 >From: Ross Youngblood >To: KRNET >Subject: KR: Flight Suite Website >Reply-To: krnet-l@teleport.com > >For the Best Dressed Test Pilot... > >New & Used Nomex Flight Suits >http://www.imsplus.com/ims27.html > >Can you tell I'm getting psyched up! > > -- Ross > >-- > > Ross Youngblood Pager: (800)SKY-PAGE >PIN#895-9073 > Staff Technical Specialist voicemail: (800)538-6838 x >1632 > Schlumberger SABER Bus Line: (541)714-1754 (Note Area code) > Corvallis,Oregon Mailto:rossy@San-Jose.ate.slb.com > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Fri, 20 Mar 1998 16:00:40 EST From: XZOSTD1 Subject: KR: Reasons For Parachutes #1 There were 2 bird hits that were repaired at my local strip last year. One hit the tail of a Cherokee. The other took out the upper center portion of the windshield on a 172. Both planes landed safely with unbelievable amounts of damage. I am convinced that either of these hits would be fatal in a smaller plane. I have come very close to birds(no reaction time) #2 The NTSB reports posted by Ross Y earlier showed about 20 fatals. I have to believe that these people had total faith and confidence in their skills and aircraft. #3 Somebody just posted information about damage caused after a rudder pedal hinge broke. What if this happened at a more inappropriate time #4 As long as I continue to build 1000# planes I can move the BRS chute from plane to plane #5 I like gadgets and a BRS chute is a great gadget. #6 I don't want to leave my family yet. #8 Death is permanent(unless I come back as a duck) #7 Things happen to the best of us. Thanks For Listening Bill Huntley KR2S (packing for Sun-N-Fun) Green Bay, WI. ------------------------------ Date: Fri, 20 Mar 1998 13:45:10 PST From: "Oscar Zuniga" Subject: KR: PerryKosh&P-51 (no archive) Yes! Yes! Yes! It looks like I'll get to go to Perry this year, courtesy of my company! I have to go to Atlanta area for a 3-day deal, and it just happens to be on the Monday of PerryKosh, so I get my travel fer free!!!! I can arrange to stay in OKC, and as long as I do my own travel from OKC to Perry, and get to Atlanta in one piece, it's on the house! Am I going, or what? Hey, Randy- maybe I will show up with some door prizes and be an actual contributor to the event, hey? Also- need to know if anybody knows of a site where I can download reasonably accurate 3-view line drawing (not photo) of a P-51. Doesn't need to be exact, just need all 3 views. No, I'm not planning a KR/Stang hybrid. And sorry about the subject line... I guess it looks like maybe you thought I was going to say that there would be a Mustang at Perry? Nah. Oscar Zuniga Medford, Oregon ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Fri, 20 Mar 1998 22:07:04 -0700 From: jscott.pilot@juno.com (Jeffrey E Scott) Subject: Re: KR: Balancing I used to have the prop on my Stinson dynamically balanced every couple of years. It's great for a metal prop that gets out of balance due to nicks and pits getting filed out periodically. It also helps to smooth out some of the harmonics that some metal props tend to generate with certain engines. If your wood prop is causing vibration, you may want to consider sending it back to the manufacturer to have the blades matched and properly balanced. It's better to start with the prop itself in proper balance then to try to compensate a poorly balanced prop by dynamically balancing. Dynamic balancing is setting up to run smoothest at a specific rpm. Having said that, at the rpm the prop was tuned to, a properly dynamically balanced prop will run very smooth as you are essentially balancing the complete rotating mass. That helps to compensate for any out of balance components inside your engine as well as any balance problems with the spinner. Jeff - ------- Jeff Scott - Los Alamos, NM jscott.pilot@juno.com See N1213W construction and first flight at http://home.hiwaay.net~langford/kjefs.html & http: //www.thuntek.net/~jeb/krpage.htm On Thu, 19 Mar 1998 07:31:47 -0600 Ed Janssen writes: >Anyone have experience with dynamically balancing a prop with an >engine? >I've heard from one source that it's the way to go. Supposedly really >smooths out the engine/prop configuration and probably eases the load >on >the crank. > >Ed Janssen > > _____________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com Or call Juno at (800) 654-JUNO [654-5866] ------------------------------ Date: Sat, 21 Mar 1998 04:56:59 +0000 From: Great Plains Aircraft Subject: Re: KR: calendar idea Being a former owner of an AlphaGraphics Print Shop, printers will do color calanders for as low as $14.95 in quantities of 50 or more. They are run off a color copier. Steve ------------------------------ Date: Sat, 21 Mar 1998 05:09:38 +0000 From: Great Plains Aircraft Subject: Re: KR: VW CHT Try installing a spare airspeed indicator in the pressure side of your engines baffling. it should read within 10mph of what ever your cruise is. Just a good way to check your airflow through the cowling. SteveBobby Muse wrote: > > .At 10:37 PM 2/24/98 +0000, you wrote: > > > >Hi can anyone advise please. > > > >My Rand KR2 has been flying since the summer > >with a 1835cc VW converted in the UK with twin plugs per cylinder. > > > >The engine runs hot with a CHT at an indicated 460F straight and > >level at anything over 3100 RPM. It would reach 480F in the climb if > >I let it. Probably higher as I've never tried. > > > >Could I ask what CHT other VW users are getting at; > > > >Ground Idle > >Cruse > >Max Climb > > > >And what's the groups experience with the reliability of > >un compensated Westach CHT gauges with the thermocouple under the > >right rear cylinder plug. > > > >There are no other signs of overheating (discolouring , hot oil > >smells, overrunning) and the EGT and oil temperatures are good. > > > >Believe me I have tried everything I can think of including, > >timing, compression (8:1), mixture, baffle seals, even > >calibrating the thermocouple and gauge. > > > >I'm beginning to wonder if this is normal. > > > >Thanks > >Hedley Walker > > > > I have a Westach gauge/thermocouple, But I attached the thermocouple to a > cyclinder head nut because with the spark plug going on and off the > thermocouple will get destroyed at the spark plug. > > My temps vary little once the engine gets warm. Cruise= 275-300*, > Taxi/idle= 175-225* degrees, Max Climb= 350*. Remember to add 75-80 > degrees to the my readings due to the thermocouple being attached to the > cyclinder head to compared to yours(under the spark plug). > > You might try to relocate where the thermocouple is attached. Try to attach > the thermocouple where it doesn't get heated by the exhaust or cooled by > incoming(cooling) air. > > > Bobby Muse(N122B) > bmuse@mindspring.com > Wimberly, TX ------------------------------ Date: Sat, 21 Mar 1998 05:15:54 +0000 From: Great Plains Aircraft Subject: Re: KR: N541RY Progress Report This last year I removed the 2-1 exhaust system for Ken Cottles Kr-1.5 with about 250 hours on the system. It had exhaust tape wrapped around the entire exhaust system. I could easily punch holes throuh it in several place. New exhaust system is coated by Jet Hot Coatings. Don't mention aircraft parts if you want yours done. Steve ------------------------------ Date: Sat, 21 Mar 1998 05:22:24 +0000 From: Great Plains Aircraft Subject: Re: KR: Sun and Fun If there would be enough interest, we would be glad to host an Airport BBQ for KR folks at our trailer on April 20 after the display buildings close at 5:00 pm. We travel with a grill and could furnish hot dogs, polish sausage etc... brewskies and pop. Steve ------------------------------ Date: Sat, 21 Mar 1998 10:27:16 -0800 From: Tom Crawford Subject: Re: KR: Balancing Jeffrey E Scott wrote: > > If your wood prop is causing vibration, you may want to consider sending > it back to the manufacturer to have the blades matched and properly > balanced. It's better to start with the prop itself in proper balance > then to try to compensate a poorly balanced prop by dynamically > balancing. Dynamic balancing is setting up to run smoothest at a > specific rpm. > > Having said that, at the rpm the prop was tuned to, a properly > dynamically balanced prop will run very smooth as you are essentially > balancing the complete rotating mass. That helps to compensate for any > out of balance components inside your engine as well as any balance > problems with the spinner. > > Jeff Jeff, My thoughts are that by the time you add the backing plate, spinner, and spinner attatch screws, the prop is probably no longer in perfect balance. (Did you space the spinner attatch screws out perfectly? Are they in the exact opposing positions on all sides?) Since the balancing is done with everything intact, as long as you put everything together the same way every time,you should be OK. As soon as we get some decent weather, I will fly over and let him do it. Full report to follow. (Film footage at eleven?) Tom Crawford tomc@afn.org Gainesville, FL N262TC 18 hours and counting. 40 by Sun & Fun or Bust. I dont think my friend plans to charge $100.00, but even at that price, it would be worth it if it smoothes out the top end. ------------------------------ Date: Sat, 21 Mar 1998 10:34:30 -0800 From: Tom Crawford Subject: Re: KR: Sun and Fun Great Plains Aircraft wrote: > > If there would be enough interest, we would be glad to host an Airport > BBQ for KR folks at our trailer on April 20 after the display buildings > close at 5:00 pm. We travel with a grill and could furnish hot dogs, > polish sausage etc... brewskies and pop. Steve Count me in, I'll bring beer! Tom Crawford tomc@afn.org Gainesville, FL N262TC ------------------------------ Date: Sat, 21 Mar 1998 16:16:26 EST From: EagleGator Subject: KR: KR parachutes, flight suits Don't buy a nomex flight suit if you wear a size 40, 42, or 44 (my wife is a GREAT cook). I think I've got about 10 flight suits, and would be more than happy to lend them out to folks who can use them. Just send me a private email and I'll send one to you on loan. As far as the parachute situation goes, a BRS is probably the best bet for most folks. There are enough foks talking about using them that we should have several methods for attaching them to the airframe to choose from. I'm going to use a reticulating canopy, and plan to use an as-yet undesigned safety pin quick release setup to separate the canopy form the airplane in the event of a bailout situation. This is, of course, predicated on determining through practice drills whether or not I can get it released quickly under simulated air loads, and then get my body extracted from the aircraft. As far as the canopy taking off the tail, I'd just as soon have something other than my body get that stuff out of the way before I head that direction. A good five point single-release harness makes that part of getting out easier, and a more recumbant seat postion will make getting out alot easier (make sure you can clear the front edge of the turtle deck!). Determine how long it will take you to execute all of this, and use this time to determine you minimum bailout altitude. Determine the lowest altitude you can pull the rip cord and get a good chute before hitting the ground, and then add altitude for the time it takes you to get out of the airplane. Your minimum bailout altitude will vary with the descent rate at the time you initiate your bailout, and will be directly affected by attitude, airspeed, and flight/spin mode you are in. Sorry, this is turning into a book, I'll stop here. Just make sure you think it through and practice your procedures. If you've never jumped before, you might consider doing that, too, but this is taking conservative preparation to an extreme. If you're going to wear a chute, know how, why, and when to use it, otherwise you're just adding extra mass to the impact inertia. Cheers, Rick Junkin EagleGator@aol.com St. Charles MO http://members.aol.com/eaglegator ------------------------------ Date: Sat, 21 Mar 1998 17:03:23 EST From: Horn2004 Subject: Re: KR: KR parachutes, flight suits In a message dated 3/21/98 3:17:33 PM, you wrote: <> Experimenter Magazine recently featured the new Rans Shekari which has a= =0Aforward hinged canopy. I noticed on the top center of the dash they ha= d a=0Acanopy emergency release handle and both the lift struts on either = side of the=0Acanopy which attached to the longerons had quick release pi= ns. I guess the=0Aproper sequence would be to pull the two pins and then = jerk the canopy=0Arelease. The canopy would probably =93disappear=94 fair= ly rapidly after that.=0AUnfortunately there were no detail shots of the = forward hinge release=0Amechanism. Steve Horn Dallas, TX Horn2004@aol.com=0A ------------------------------ Date: Sat, 21 Mar 1998 18:58:19 -0500 (EST) From: jeroffey@tir.com (jeroffey) Subject: KR: Balancing We had the prop balanced on our Arrow a few years back and if memory serves me right, the balance weights were placed on the spinner bulkhead. A noticeable improvement was made to the smoothnes of the engine in cruise. No improvement was seen during start or idle. I can't remember just how much it cost, but it wasn't a lot. Under a hundred but I'm just remembering because there were so few things we did to that plane that came in that cheap. Everthing else (PLENTY) cost much, much, MUCH more. ------------------------------ Date: Sat, 21 Mar 1998 18:49:23 -0800 From: MARVIN MCCOY Subject: Re: KR: KR parachutes, flight suits EagleGator wrote: > > If you're going to wear a chute, know how, why, and when to use > it, otherwise you're just adding extra mass to the impact inertia. > > Cheers, > Rick Junkin > EagleGator@aol.com > St. Charles MO > http://members.aol.com/eaglegator - ------------------------- Rick: Well put. It has been twenty five years since I parachuted. I can still remember how freaked out I was during my first jump. If you have never jumped before you will most likely never get your rip cord pulled. Marvin McCoy Seattle, WA. North end of Boeing field mr.marvin@worldnet.att.net - -------------------- ------------------------------ End of krnet-l-digest V2 #57 ****************************