John,

 

I built the snubbers as instructed, but did not install them in my IV-P. In 450+ hours to date, I have not had any problem with the gear doors vibrating. I am also operating the aircraft with only one of the two springs on the back of each door.

 

Bob

 

 

Marv et al,

 

My Lancair is #FB 315 if memory serves.  I purchased it in 1996.  It came with the system you refer to included.  We called it a gear door snubber.  I installed it and thought it worked well in all gear retract tests.

 

This airplane is not flying but will do so this summer.  I placed it in the hands of a build assist shop in Redmond, OR year before last and they reworked the slider as well as a few other things on the gear doors.  The original slider used a polyethylene sheet that was too skinny, so this had to be changed.  Without my input they removed the snubber system.  When I questioned them they told me Lancair no longer recommended it.

 

Recently I’ve heard of reports of doors vibrating in certain flight regimes and wondered if the snubbers might be coming back in fashion.  Would appreciate comments on that rumor.

 

Regards,

 

John Barrett, CEO

Leading Edge Composites

PO Box 428

Port Hadlock, WA 98339

 

www.carbinge.com