From: To: Subject: krnet Digest 10 Oct 2001 11:16:43 -0000 Issue 305 Date: Wednesday, October 10, 2001 4:17 AM krnet Digest 10 Oct 2001 11:16:43 -0000 Issue 305 Topics (messages 7278 through 7283): Ultralight Flyin 7278 by: Tommy & Carolyn Re: Question and comment 7279 by: Daniel Heath Re: Rand KR2S 7280 by: Mark Langford Re: Jerry and Dan's Airplane Factory website.... 7281 by: Frank Ross Re: Elevator Balance 7282 by: Jeremy Casey control surface Balance/flutter 7283 by: larry flesner Administrivia: To subscribe to the digest, e-mail: To unsubscribe from the digest, e-mail: To post to the list, e-mail: ---------------------------------------------------------------------- Date: Sun, 7 Oct 2001 21:47:38 -0400 To: From: "Tommy & Carolyn" Subject: Ultralight Flyin Message-ID: <012401c14f9b$367d6fc0$4f898ed1@user> WHAT: Ultralight Aircraft Fly-in WHEN: October 13, 2001 WHERE: SLUA Club airstrip (1600') Iowa, LA located on the NE corner of Hwy 165 & I-10 intersection N30-14-56, W92-58-18 WHO: Southwest Louisiana Ultralight Aircraft Club FEATURES: Good food, flea market, flying games (bomb drop, balloon chase, spot landing) with a "Top Gun" award & more. FEES: FREE FMI: Ed Stephens 337-436-0423 337-475-5509 estephen@mail.ncneese.edu Tommy Dubroc 318-748-6308 cen23370@centurytel.net ------------------------------ Date: Mon, 8 Oct 2001 07:06:05 -0400 To: "Tim Brown" , "Group KR NET" From: "Daniel Heath" Subject: Re: KR> Question and comment Message-ID: <000c01c14fe9$3ad18b30$742c5d0c@scana.com> No, but I have used T-88 and micro to make "Non-structural" attachments. I'm not sure that I would want to use it inside a joint because of the possibility of keeping the rest of the joint from mating properly. Daniel R. Heath WWW.EAA242.ORG ----- Original Message ----- From: "Tim Brown" To: "Group KR NET" Sent: Sunday, October 07, 2001 9:40 PM Subject: KR> Question and comment > The question is: has anyone used T-88 and flox > combo to add a little strength or to fill slight > imperfection where spruce meets spruce? > > The comment: I changed to the new airfoil so > everything I had done before basically had to be > redone. I used a drill press the first time for > drilling for WAFs. This time (because center > spars were in) I made the jig for drilling. I > kindof used the plans dimensions but also took > from Mark Langford. > > I used a piece of 3/4" MDF, drilled through it, > cut out the "gap" in the middle, inserted a 7/32 > piece of tubing from the hobby shop through which > a 3/16 bit fit snug. I allowed about 3" to > extend on the "meat" side of the jig and 1 1/2" > on the other. I then inserted an AN3 to the one > side of the jig and drilled through. > > Using the jig produced far superior results and > ease than the drill press. USE THE JIG!!!!!!! > > Tim > > > > __________________________________________________ > Do You Yahoo!? > NEW from Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month. > http://geocities.yahoo.com/ps/info1 > > --------------------------------------------------------------------- > To post to the list, email: krnet@mailinglists.org , or "reply all" > > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > For additional commands, e-mail: krnet-help@mailinglists.org > > See the KRNet archives at http://www.escribe.com/aviation/krnet/ . > AOL and Compuserve do NOT pass KRNet email, so use some other system! > ------------------------------ Date: Mon, 8 Oct 2001 07:25:23 -0500 To: From: "Mark Langford" Subject: Fw: Rand KR2S Message-ID: <004a01c14ff4$4eef3a80$5e0ca58c@tbe.com> UK NetHeads, Could you contact Fred at fred.livesey@zetnet.co.uk to discuss sources? Thanks, Mark ---- Original Message ----- From: "Frederic Livesey" To: Sent: Monday, October 08, 2001 5:18 AM Subject: Rand KR2S > Hi Mark, > hope you don't mind me contacting you but I am in the process > of collecting information on constructing a home build plane. I > should congratulate you on an excellent web site and say that it has > given me a good deal of inspiration. The only problem with the UK is > that we are not blessed with the profusion of suppliers that you have > in the USA. I wondered if you have a contact in the UK who is > building a KR2S (or maybe an email address) who I could talk to about > material supply problems. > > Thanks in advance > Kind Regards > Fred Livesey > ------------------------------ Date: Mon, 8 Oct 2001 08:06:03 -0700 (PDT) To: KRnet From: Frank Ross Subject: Re: KR> Jerry and Dan's Airplane Factory website.... Message-ID: <20011008150603.31995.qmail@web14003.mail.yahoo.com> Jerry & Dan, Great website. Remember, imitation is the sincerest form of flattery, or something like that. ===== Frank Ross, San Antonio, TX, __________________________________________________ Do You Yahoo!? NEW from Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month. http://geocities.yahoo.com/ps/info1 ------------------------------ Date: Mon, 8 Oct 2001 08:41:45 -0400 To: "Krnet" From: "Jeremy Casey" Subject: RE: KR> Elevator Balance Message-ID: I read an aerodynamics textbook a few years back that had a good comment about flutter..."Some people fear flutter because they don't understand it...other people fear it because they do..." Jeremy Casey jrcasey@ldl.net -----Original Message----- From: Mark Langford [mailto:langford@hiwaay.net] Sent: Saturday, October 06, 2001 5:30 PM To: krnet@mailinglists.org Subject: Re: KR> Elevator Balance Bob Sauer wrote: >>ATTENTION PILOTS OF FLYING KR2/KR2S PLANES WITH 0200, SOOB OR CORVAIR ENGINES...<< Bob, I'm obviously excluded from answering this question, but I'm going to do it anyway, because you won't get many (if any) replies otherwise, given the number of KRs flying with the engines mentioned, especially on KRNet. So here's my two cents worth. If you hang a big heavy engine on the front of a KR, you are going to need to balance it at the tail anyway. Why not put that lead weight into balancing the rudder and elevators, rather than just a chunk of lead bolted to the tail? I don't even have a header tank, yet I have about 6 pounds of lead in the tail, and my CG will be just about right in the middle of the range. If I had a header tank, I'd be looking for a lot more tire weights to melt down. To balance the elevators, I'd do it at the tips, with the lead overhangiing the hinge line as far as possible. As far as REAL evidence for whether or not you should balance your elevators, it should be mentioned that Troy Petteway used to have his balanced, but no longer does. Having had it both ways, he likes it better like it is now, but who's to say which of the many changes that he made is responsible for his new-found improvement? Marty does (as least to some extent) and he rourtinely does well over 200 mph. Richard Shirley's KR1 is NOT balanced, and he does 215 flat out, faster in a dive, and he's been doing it since 1983. I think it can be said that there is no evidence that says you MUST balance them, although it's considered good practice in the "fast" experimental community. And if you're going to have to add lead to the tail anyway, why not add it to the end of the elevators? Bottom line is that it very well may not matter at all, if past experience tells us anything. If you build your elevator so that the end of it is in line with the end of the horizontal stabilizer (like the plans show) you can always come back and add tip weights after you've done a weight and balance, if you discover that you need some weight in the tail. I guess it's a judgement call. You are certainly welcome to take this with a large grain of salt, because I am not a KR pilot, as Terry Chizak can attest... Mark Langford, Huntsville, Alabama mailto:langford@hiwaay.net see KR2S N56ML at http://home.hiwaay.net/~langford --------------------------------------------------------------------- To post to the list, email: krnet@mailinglists.org , or "reply all" To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org For additional commands, e-mail: krnet-help@mailinglists.org See the KRNet archives at http://www.escribe.com/aviation/krnet/ . AOL and Compuserve do NOT pass KRNet email, so use some other system! ------------------------------ Date: Wed, 10 Oct 2001 06:22:58 -0500 To: From: larry flesner Subject: control surface Balance/flutter Message-Id: <3.0.6.32.20011010062258.0083dd20@pop3.norton.antivirus> Netters, I know this horse seemed to die last week already but there was one point that wasn't really made clear. Most builders think of control surface flutter as being strictly speed related. To borrow a line from Tony Bingelis' book "Sportplane Construction techniques" , page 145, "Any airplane can experience flutter...even your light and slow VW-powered job under certian conditions." My point is that there are probably more critical factors than just the speed from hanging a larger engine. I'm sure I've promoted Tony's books at least a half dozen times on the Net but I'm going to do it again. Put them on your Christmas list (get all four). They are probably the most easily read and understood books on a technical subject I've ever seen and come with enough pictures and simple drawings to clearly make his points. At our house,they have made excellent reading material for the King as he graces the "throne"! I guess it doesn't really matter WHERE you get your education, the diplomas are all basiclly good for the same thing.......... Larry Flesner ------------------------------ End of krnet Digest ***********************************