---------------------------------------------------------- Lightning-List Digest Archive --- Total Messages Posted Wed 06/02/10: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:55 AM - Re: Lightning Gear shimmy (selwyn) 2. 07:25 AM - Re: Re: Lightning Gear shimmy (flylightning) 3. 09:04 AM - Re: Re: Lightning Gear shimmy (FamilyGage@aol.com) 4. 01:59 PM - Re: Re: Lightning Gear shimmy (N1BZRich@AOL.COM) 5. 02:36 PM - Re: Lightning Newsletter for June 2010 (Bill Strahan) ________________________________ Message 1 _____________________________________ Time: 04:55:57 AM PST US Subject: Lightning-List: Re: Lightning Gear shimmy From: "selwyn" [quote="info(at)flylightning.net"] This was the reason for the move to the oilite bushing in the nylon blocks. You can not put tension on the oilite bushing but they will keep the pivot point true and free from wear. Nick Otterback > [b] Um, which move to oilite bushings was that? I noticed the bushes in Buz's photos and wondered where they came from. Its not in the build manual, no service bulletins, can't find it anywhere on the Arion site, can't remember reading it in the newsletter. What's the status of the change, is it part of ongoing development or a recommended retrofit? -------- Cheers, Selwyn Kit 66 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=299712#299712 ________________________________ Message 2 _____________________________________ Time: 07:25:06 AM PST US From: "flylightning" Subject: RE: Lightning-List: Re: Lightning Gear shimmy About the beginning of the year I noticed a slight vibration in flight on one of our planes. It felt as if it was coming from the nose I could feel it in the pedals. After pushing down on the tail in the hanger, I noticed that the nose block had a small amount of slop in it and the fork assembly could be moved around a bit, this was not due to a suspicion of shimmy. I took the fork off and thought about trying a large bushing. Because the steel leg and the nylon are different materials I figured that the small trash or bur might wear the plastic quickly and I think that is what happened. So I found a large oilite bushing (oil bronze bushing) to put in the block. This did take care of the slop and the vibration/buffeting in the nose wheel and pant in flight. We than put in the news letter that if anyone noticed this in their Lightning that this bushing could be retrofitted as a fix. True the blocks should be tight so not to develop slop in the system but beyond that the tension is not to combat a nose wheel shimmy the design itself is, the the bushing to combat wear. We can release recommendations and things we have noticed in the design thru the newsletter or web site to help make things better. It would not be right for a kit manufacturer to issue an AD or SB as we are not the manufacturer of the Aircraft the builder is and we do not control their construction. So with that in mind we set it out in the newsletter as a bring to everyone's attention type thing and have now added the bushing to the kits and machined the blocks to match. As a side note it is important to recognize the difference in the esqual nose leg and the lightning. The esqual nose leg does have a vertical pivot point, it is not swept forward. So the nose leg on an esqual with out the blocks tightened can shimmy. Some later esqual's had lightning parts because we got none from them. Nick Otterback -----Original Message----- From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-list-server@matronics.com] On Behalf Of selwyn Sent: Wednesday, June 02, 2010 6:55 AM Subject: Lightning-List: Re: Lightning Gear shimmy [quote="info(at)flylightning.net"] This was the reason for the move to the oilite bushing in the nylon blocks. You can not put tension on the oilite bushing but they will keep the pivot point true and free from wear. Nick Otterback > [b] Um, which move to oilite bushings was that? I noticed the bushes in Buz's photos and wondered where they came from. Its not in the build manual, no service bulletins, can't find it anywhere on the Arion site, can't remember reading it in the newsletter. What's the status of the change, is it part of ongoing development or a recommended retrofit? -------- Cheers, Selwyn Kit 66 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=299712#299712 ________________________________ Message 3 _____________________________________ Time: 09:04:05 AM PST US From: FamilyGage@aol.com Subject: Re: Lightning-List: Re: Lightning Gear shimmy Nick: Thanks so much for the information. I will try Buz's fix first, and if there is no improvement; are the newer bushings available? I think that the nose gear is Ligntning. I recently purchased two new main gear from you. Everyone appreciates your factory support. My Best, Ray Gage In a message dated 6/2/2010 10:25:38 A.M. Eastern Daylight Time, info@flylightning.net writes: --> Lightning-List message posted by: "fly lightning" About the beginning of the year I noticed a slight vibration in flight on one of our planes. It felt as if it was coming from the nose I could feel it in the pedals. After pushing down on the tail in the hanger, I noticed that the nose block had a small amount of slop in it and the fork assembly could be moved around a bit, this was not due to a suspicion of shimmy. I took the fork off and thought about trying a large bushing. Because the steel leg and the nylon are different materials I figured that the small trash or bur might wear the plastic quickly and I think that is what happened. So I found a large oilite bushing (oil bronze bushing) to put in the block. This did take care of the slop and the vibration/buffeting in the nose wheel and pant in flight. We than put in the news letter that if anyone noticed this in their Lightning that this bushing could be retrofitted as a fix. True the blocks should be tight so not to develop slop in the system but beyond that the tension is not to combat a nose wheel shimmy the design itself is, the bushing to combat wear. We can release recommendations and things we have noticed in the design thru the newsletter or web site to help make things better. It would not be right for a kit manufacturer to issue an AD or SB as we are not the manufacturer of the Aircraft the builder is and we do not control their construction. So with that in mind we set it out in the newsletter as a bring to everyone's attention type thing and have now added the bushing to the kits and machined the blocks to match. As a side note it is important to recognize the difference in the esqual nose leg and the lightning. The esqual nose leg does have a vertical pivot point, it is not swept forward. So the nose leg on an esqual with out the blocks tightened can shimmy. Some later esqual's had lightning parts because we got none from them. Nick Otterback -----Original Message----- From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-list-server@matronics.com] On Behalf Of selwyn Sent: Wednesday, June 02, 2010 6:55 AM Subject: Lightning-List: Re: Lightning Gear shimmy [quote="info(at)flylightning.net"] This was the reason for the move to the oilite bushing in the nylon blocks. You can not put tension on the oilite bushing but they will keep the pivot point true and free from wear. Nick Otterback > [b] Um, which move to oilite bushings was that? I noticed the bushes in Buz's photos and wondered where they came from. Its not in the build manual, no service bulletins, can't find it anywhere on the Arion site, can't remember reading it in the newsletter. What's the status of the change, is it part of ongoing development or a recommended retrofit? -------- Cheers, Selwyn Kit 66 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=299712#299712 ________________________________ Message 4 _____________________________________ Time: 01:59:51 PM PST US From: N1BZRich@AOL.COM Subject: Re: Lightning-List: Re: Lightning Gear shimmy Hi Selwyn, Check the December 2009 issue of the Lightning Newsletter for info on the new bushings. Buz In a message dated 6/2/2010 7:56:15 A.M. Eastern Daylight Time, selwyn@ellisworks.com.au writes: --> Lightning-List message posted by: "selwyn" [quote="info(at)flylightning.net"] This was the reason for the move to the oilite bushing in the nylon blocks. You can not put tension on the oilite bushing but they will keep the pivot point true and free from wear. Nick Otterback > [b] Um, which move to oilite bushings was that? I noticed the bushes in Buz's photos and wondered where they came from. Its not in the build manual, no service bulletins, can't find it anywhere on the Arion site, can't remember reading it in the newsletter. What's the status of the change, is it part of ongoing development or a recommended retrofit? -------- Cheers, Selwyn Kit 66 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=299712#299712 ________________________________ Message 5 _____________________________________ Time: 02:36:24 PM PST US Subject: Lightning-List: Re: Lightning Newsletter for June 2010 From: "Bill Strahan" Well, I thought long and hard and decided I needed to insert my feedback. :) Another great newsletter! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=299786#299786 ------------------------------------------------------------------------------------- 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.