---------------------------------------------------------- Lightning-List Digest Archive --- Total Messages Posted Thu 05/31/12: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:59 AM - Re: Re: Landing gear shimmy (Dave Mccorquodale) 2. 07:18 AM - Re: Re: Landing gear shimmy (Bernard Melendez, Jr.) 3. 09:18 AM - Re: Re: Landing gear shimmy (GARY BARNETT) 4. 09:30 AM - Airspeed Indicator Service Bulletin (Nick Otterback) 5. 04:21 PM - Re: Re: Landing gear shimmy (n5pb@AOL.COM) ________________________________ Message 1 _____________________________________ Time: 04:59:07 AM PST US From: "Dave Mccorquodale" Subject: Re: Lightning-List: Re: Landing gear shimmy Earl This is certainly not a new subject. I built my Esqual in 05 and it has 810 hrs on it. Let me tell u what I have tried. 1. clamping "broom handles" to the legs-this worked the best 2. epoxy aluminum rods to the legs 3. epoxy fiberglass rods to the legs 4. wrapping legs with fiberglass 5. balance wheel pants- still have weights inside pants 6. remachined new struts a couple thousands thicker this helped but did not cure it 7. balanced my tires in water, with a shaft in wheel, buble balancer, spinning tires on aircraft 8. had video taken in 05 found it to be in mains not nose wheel after I built a springed nose gear, this worked well but did not fix problem 9. bought the best tires 10. replace all rims and brakes I only am trying to save u guys a lot of work, the only thing that worked for me was finding a spin balancer that would fit the small rims. Now I have no shimmy Flat spots on the tires cause it to shimmy also good luck Dave McCorquodale 167DM ----- Original Message ----- From: EAFerguson@AOL.COM To: lightning-list@matronics.com Sent: Wednesday, May 30, 2012 7:53 AM Subject: Re: Lightning-List: Re: Landing gear shimmy So how do you explain the shimmy in Lightnings like mine that have no wheel pants? BTW, It was less noticeable when the aircraft was new. Earl Ferguson Kit # 5 In a message dated 5/29/2012 9:31:58 A.M. Eastern Daylight Time, nowacklinden@gmx.de writes: I can assist the voiced opinion that the unbalanced wheel pants play an important role in the shimmy drama: ________________________________ Message 2 _____________________________________ Time: 07:18:55 AM PST US From: "Bernard Melendez, Jr." Subject: Re: Lightning-List: Re: Landing gear shimmy Group, Question for you guys having shimmy problems: On Lightnings, is this happening to the main landing gear on both the LSA a nd the old style gears, or only on one type? Inquiring minds want to know. Thanks. Bernardo Melendez, kit #110 --- On Thu, 5/31/12, Dave Mccorquodale wrote: From: Dave Mccorquodale Subject: Re: Lightning-List: Re: Landing gear shimmy =0A=0A =0A =0A=0A=0A=0AEarl=0AThis is certainly not a new subject.- I bui lt my Esqual in 05 and it =0Ahas 810 hrs on it.- Let me tell u what I hav e tried.=0A1.- clamping "broom handles" to the legs-this worked the =0A ---- best=0A2.- epoxy aluminum rods to the legs=0A3.- epoxy fib erglass rods to the legs=0A4.- wrapping legs with fiberglass=0A5.- bala nce wheel pants- still have weights inside pants=0A6.--remachined new s truts a couple thousands thicker=0A---- this helped but did not cur e it =0A7.- balanced my tires in water, with a shaft-in wheel, buble =0A=0A---- balancer, spinning tires on aircraft=0A8.- had video t aken in 05 found it to be in mains not nose =0A---- wheel after I b uilt a springed nose gear, this =0Aworked well =0A---- but did not fix problem=0A9.-- bought the best tires=0A10. replace all rims and bra kes=0A-=0AI only am trying to save u guys a lot of work, the only thing t hat worked =0Afor me was finding a spin balancer that would fit the small r ims.- Now I =0Ahave no shimmy=0AFlat spots on the tires cause it to shimm y also=0A-=0Agood luck=0A-=0ADave McCorquodale=0A167DM=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A- =0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A-=0A -=0A-=0A=0A ----- Original Message ----- =0A From: =0A EAFerguson@AO L.COM =0A To: lightning-list@matronics.com =0A =0A Sent: Wednesday, May 30, 2012 7:53 =0A AM=0A Subject: Re: Lightning-List: Re: Landing =0A gea r shimmy=0A =0A So how do you explain the shimmy in Lightnings like mine that have no =0A wheel pants? BTW, It was less noticeable when the aircraft was new.=0A -=0A Earl Ferguson=0A Kit # 5=0A -=0A =0A In a message dated 5/2 9/2012 9:31:58 A.M. Eastern Daylight Time, nowacklinden@gmx.de writes:=0A I can =0A assist the voiced opinion that the unbalanced wheel pants play an important =0A role in the shimmy drama:=0A=0Ahref="http://www.matr onics.com/Navigator?Lightning-List">http://www.matronics.com/Navigator?Ligh tning-List=0Ahref="http://forums.matronics.com">http://forums.matronics.c om=0Ahref="http://www.matronics.com/contribution">http://www.matronics.co =========================0A =0A ________________________________ Message 3 _____________________________________ Time: 09:18:45 AM PST US From: GARY BARNETT Subject: RE: Lightning-List: Re: Landing gear shimmy BernardI see one resonance around 8 to 10 miles per hour=2C taxiing faster or slower gets away from it. There is a second resonance around 40 knots o n takeoff which I attribute to the wheels being out of balance. I have not spin balanced my wheels yet but plan to as soon as I find a motorcycle sho p with the required balancer. Gary Barnett ELSA SN 133 Date: Thu=2C 31 May 2012 07:17:44 -0700 From: n45bm@yahoo.com Subject: Re: Lightning-List: Re: Landing gear shimmy Group=2C Question for you guys having shimmy problems: On Lightnings=2C is this happening to the main landing gear on both the LSA and the old style gears=2C or only on one type? Inquiring minds want to know. Thanks. Bernardo Melendez=2C kit #110 --- On Thu=2C 5/31/12=2C Dave Mccorquodale wrote: From: Dave Mccorquodale Subject: Re: Lightning-List: Re: Landing gear shimmy Earl This is certainly not a new subject. I built my Esqual in 05 and it has 810 hrs on it. Let me tell u what I have tried. 1. clamping "broom handles" to the legs-this worked the best 2. epoxy aluminum rods to the legs 3. epoxy fiberglass rods to the legs 4. wrapping legs with fiberglass 5. balance wheel pants- still have weights inside pants 6. remachined new struts a couple thousands thicker this helped but did not cure it 7. balanced my tires in water=2C with a shaft in wheel=2C buble balancer=2C spinning tires on aircraft 8. had video taken in 05 found it to be in mains not nose wheel after I built a springed nose gear=2C this worked well but did not fix problem 9. bought the best tires 10. replace all rims and brakes I only am trying to save u guys a lot of work=2C the only thing that worked for me was finding a spin balancer that would fit the small rims. Now I have no shimmy Flat spots on the tires cause it to shimmy also good luck Dave McCorquodale 167DM ----- Original Message ----- From: EAFerguson@AOL.COM To: lightning-list@matronics.com Sent: Wednesday=2C May 30=2C 2012 7:53 AM Subject: Re: Lightning-List: Re: Landing gear shimmy So how do you explain the shimmy in Lightnings like mine that have no wheel pants? BTW=2C It was less noticeable when the aircraft was new. Earl Ferguson Kit # 5 In a message dated 5/29/2012 9:31:58 A.M. Eastern Daylight Time=2C nowack linden@gmx.de writes: I can assist the voiced opinion that the unbalanced wheel pants play an impor tant role in the shimmy drama: href="http://www.matronics.com/Navigator?Lightning-List">http://www.matro nics.com/Navigator?Lightning-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c http://www.matronics.com/con=============== ________________________________ Message 4 _____________________________________ Time: 09:30:51 AM PST US From: "Nick Otterback" Subject: Lightning-List: Airspeed Indicator Service Bulletin To Group, Owners Of SLSA LS-1's please take the time to go to www.flylightning.net/service-bulletins.html and review the latest Service Bulletin. Make sure to read the SN range as it does not affect the last few delivered aircraft. The 2.25" back up airspeed indicators installed in SLSA LS-1 aircraft are mismarked. The Flap range incorrectly covers the bottom of the green ARC, or clean stall speed marking. The flap arc on the ASI should be thinner to reveal the end of the normal operating range or green arc. Airspeed indicators must be exchanged for the correctly marked unit thru Arion Aircraft. Although not applicable to the experimental aircraft I would suggest reviewing the SB as well. Arion aircraft can exchange those ASIs to owners of EXP kits for a nominal fee. Thank You, Nick Otterback Arion Aircraft LLC R&D Technical Support 931-680-1781 ________________________________ Message 5 _____________________________________ Time: 04:21:08 PM PST US Subject: Re: Lightning-List: Re: Landing gear shimmy From: n5pb@AOL.COM Mine is an old style gear. -----Original Message----- From: Bernard Melendez, Jr. Sent: Thu, May 31, 2012 10:19 am Subject: Re: Lightning-List: Re: Landing gear shimmy Group, Question for you guys having shimmy problems: On Lightnings, is this happening to the main landing gear on both the LSA a nd the old style gears, or only on one type? Inquiring minds want to know. Thanks. Bernardo Melendez, kit #110 --- On Thu, 5/31/12, Dave Mccorquodale wrote: From: Dave Mccorquodale Subject: Re: Lightning-List: Re: Landing gear shimmy Earl This is certainly not a new subject. I built my Esqual in 05 and it has 81 0 hrs on it. Let me tell u what I have tried. 1. clamping "broom handles" to the legs-this worked the best 2. epoxy aluminum rods to the legs 3. epoxy fiberglass rods to the legs 4. wrapping legs with fiberglass 5. balance wheel pants- still have weights inside pants 6. remachined new struts a couple thousands thicker this helped but did not cure it 7. balanced my tires in water, with a shaft in wheel, buble balancer, spinning tires on aircraft 8. had video taken in 05 found it to be in mains not nose wheel after I built a springed nose gear, this worked well but did not fix problem 9. bought the best tires 10. replace all rims and brakes I only am trying to save u guys a lot of work, the only thing that worked f or me was finding a spin balancer that would fit the small rims. Now I hav e no shimmy Flat spots on the tires cause it to shimmy also good luck Dave McCorquodale 167DM ----- Original Message ----- From: EAFerguson@AOL.COM Sent: Wednesday, May 30, 2012 7:53 AM Subject: Re: Lightning-List: Re: Landing gear shimmy So how do you explain the shimmy in Lightnings like mine that have no wheel pants? BTW, It was less noticeable when the aircraft was new. Earl Ferguson Kit # 5 In a message dated 5/29/2012 9:31:58 A.M. Eastern Daylight Time, nowacklind en@gmx.de writes: I can assist the voiced opinion that the unbalanced wheel pants play an imp ortant role in the shimmy drama: href="http://www.matronics.com/Navigator?Lightning-List">http://www.matro nics.com/Navigator?Lightning-List ref="http://forums.matronics.com">http://forums.matronics.com ref="http://www.matronics.com/contribution">http://www.matronics.com/c http://www.matronics.com/con=============== -= - The Lightning-List Email Forum - -= Use the Matronics List Features Navigator to browse -= the many List utilities such as List Un/Subscription, -= Archive Search & Download, 7-Day Browse, Chat, FAQ, -= Photoshare, and much much more: - -= --> http://www.matronics.com/Navigator?Lightning-List - -======================== -= - MATRONICS WEB FORUMS - -= Same great content also available via the Web Forums! - -= --> http://forums.matronics.com - -======================== -= - List Contribution Web Site - -= Thank you for your generous support! -= -Matt Dralle, List Admin. -= --> http://www.matronics.com/contribution -======================== ------------------------------------------------------------------------------------- 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.