---------------------------------------------------------- Lightning-List Digest Archive --- Total Messages Posted Thu 01/20/11: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:08 AM - Wheel shimmy - solutions? (Malcolm Ferguson) 2. 09:18 AM - Re: Wheel shimmy - solutions? (WBrowns) 3. 11:25 AM - Re: Re: Wheel shimmy - solutions? (James, Clive R) 4. 09:28 PM - Re: Removable stick option? (drussel@wbsnet.org) ________________________________ Message 1 _____________________________________ Time: 02:08:28 AM PST US From: "Malcolm Ferguson" Subject: Lightning-List: Wheel shimmy - solutions? You might like to email Dennis Borchardt (the Australian Lightning Dealer). None of his builds have had a shimmy problem, likewise his builders if they followed his advice. It's an alignment issue. Wooden broom sticks are for witches and rv builders. As for nose wheel shimmy check out the following: http://www.periheliondesign.com/downloads/nosewheelshimmy.pdf Malcolm Ferguson ________________________________ Message 2 _____________________________________ Time: 09:18:01 AM PST US Subject: Lightning-List: Re: Wheel shimmy - solutions? From: "WBrowns" Bill, When I first built my Lightening I flew the plane for maybe 60 hours before putting on the wheel pants. During that initial 60 hours I never had any shimmy. Almost the first time I taxied the plane after the wheel pants were installed I felt the a shimmy. I was really surprised. Since then I have installed new 6 ply tires which were balanced and the brakes have been redone. Better, but still more shimmy that I would like. Thinking back to the initial 60 hours I got to wondering why I started feeling the shimmy after the wheels pants were installed. Got to wondering if they were "magnifying" some harmonics that occurred from from the gear leg. So I got to looking at the way the wheel pants are mounted. The inside mounts are fixed but the outside mount "floats" inside the axle. I'll admit that "floats" may be a little strong but it is certainly not tight. I went to the Farm and Fleet Aviation department (LOL) and got some 4/5 inch long expansion springs and some large washers. Removed the outside wheel pant bracket and installed a washer, a spring, and another washer at the other end. Pushed the bracket back in place and re-installed the cotter pin to hold everything in place. Now I have a "stiff" mounting point which seems to have helped reduce shimmy - not perfect but better. I think it helped reduce the shimmy. It is a simple fix if you want to give it a try. Bill Browns Read this topic online here: http://forums.matronics.com/viewtopic.php?p=327689#327689 ________________________________ Message 3 _____________________________________ Time: 11:25:37 AM PST US Subject: RE: Lightning-List: Re: Wheel shimmy - solutions? From: "James, Clive R" I'm sure it has been mentioned before however, I saw the 'balancing' of a wheel pant (spat) being done with lead shot set in epoxy. This was to make the pant the same mass about the axle (I suppose) and hence stop it from setting up a shimmy. Was that a Lightning thing or somewhere else (Vans?). Regards, Clive -----Original Message----- From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-list-server@matronics.com] On Behalf Of WBrowns Sent: 20 January 2011 17:16 Subject: Lightning-List: Re: Wheel shimmy - solutions? Bill, When I first built my Lightening I flew the plane for maybe 60 hours before putting on the wheel pants. During that initial 60 hours I never had any shimmy. Almost the first time I taxied the plane after the wheel pants were installed I felt the a shimmy. I was really surprised. Since then I have installed new 6 ply tires which were balanced and the brakes have been redone. Better, but still more shimmy that I would like. Thinking back to the initial 60 hours I got to wondering why I started feeling the shimmy after the wheels pants were installed. Got to wondering if they were "magnifying" some harmonics that occurred from from the gear leg. So I got to looking at the way the wheel pants are mounted. The inside mounts are fixed but the outside mount "floats" inside the axle. I'll admit that "floats" may be a little strong but it is certainly not tight. I went to the Farm and Fleet Aviation department (LOL) and got some 4/5 inch long expansion springs and some large washers. Removed the outside wheel pant bracket and installed a washer, a spring, and another washer at the other end. Pushed the bracket back in place and re-installed the cotter pin to hold everything in place. Now I have a "stiff" mounting point which seems to have helped reduce shimmy - not perfect but better. I think it helped reduce the shimmy. It is a simple fix if you want to give it a try. Bill Browns Read this topic online here: http://forums.matronics.com/viewtopic.php?p=327689#327689 ________________________________ Message 4 _____________________________________ Time: 09:28:34 PM PST US Subject: RE: Lightning-List: Removable stick option? From: drussel@wbsnet.org sdJasdssddcksdsd,sd I just noticed thss that you are from Kansas. I live in Garden City and am going to Sheblyville to pick up my new LS-1 next week. I looked at the removible stick option but instead decided to have move the stick as far forward as possible (good for a fat old man.) My wife and I are presently in our winter home in Port Isabel, TX, which is just accross the bay from the South Padre island resort area. I am a relatively new pilot with just 600 hours pic. Just sold by Beech Sierra due to medical issues.s. Tell me more about your plane, maybe we can get together sometime. Gary Drussel N125 GD > Nick, > If we are not too far along on my build, I'd be interested in this option. > Hope you had a good Christmas vacation. > > Best Regards, > Jack > > Jack Gonzenbach > Heart of America Aviation LLC > 12906 W 122nd St > Overland Park, KS 66213 > (913) 890-3052 > jgonzenbach@flyhoaa.com > _____ > > From: owner-lightning-list-server@matronics.com > [mailto:owner-lightning-list-server@matronics.com] On Behalf Of > flylightning > Sent: Sunday, January 02, 2011 3:07 PM > To: lightning-list@matronics.com > Subject: Lightning-List: Removable stick option? > > Group, > > This is in regards to Bill's mention about a removable stick option. I > thought I would start another post about it. > How many people would like to see this? It is certainly something that our > welding shop could make, it would be easy to retrofit and could be an > option > at initial purchase of a kit. > > If you are building a kit and had not flown or touched the sticks yet as > far > as construction goes, we could take it in exchange for credit towards the > other stick. Not sure of a cost but give me a week and I will. > Those who are flying would have to buy new, but I can find out how much to > change your sticks, but I think a new one will be cheaper after shipping > it > back and forth and cutting it up an such. > > This will be initially to the Kit owners only. I will have to do > supplemental testing to the control sticks for the SLSAs, but that should > not take to long. > > Please let me know thru the List or my email and if we have got more than > 1 > or 2 people who want it will make it happen. > > Nick Otterback > Arion Aircraft LLC > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message lightning-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Lightning-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/lightning-list Browse Digests http://www.matronics.com/digest/lightning-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.