Hi all,
I've recently been getting some vibration on my RV-7 (O-360 + HC-C2YK-1BF). It kind of follows the RPM, so I thought that it could be a prop out of balance. However the confusing thing is that it seems to come and go with engine parameters unchanged. I wasn't quite able to pinpoint what causes it to start and stop, but it seems that it diminishes during and after entering some chop, but it may just be perceptual effect. It also does seem to be less on the ground even during runup to high rpm.
I found that my exhaust pipe (Vetterman crossover) was loose. I replaced some clamps and now I can't move the pipes so that they touch either cowling or the airframe, although there is still some play.
Not sure what the next step should be. My idea is to find someone with a vibration analyzer and try to record it in flight or do a prop balance just in case, but the intermittent nature of it seems to hint that it won't help?
Any suggestions?
Thanks!
I've recently been getting some vibration on my RV-7 (O-360 + HC-C2YK-1BF). It kind of follows the RPM, so I thought that it could be a prop out of balance. However the confusing thing is that it seems to come and go with engine parameters unchanged. I wasn't quite able to pinpoint what causes it to start and stop, but it seems that it diminishes during and after entering some chop, but it may just be perceptual effect. It also does seem to be less on the ground even during runup to high rpm.
I found that my exhaust pipe (Vetterman crossover) was loose. I replaced some clamps and now I can't move the pipes so that they touch either cowling or the airframe, although there is still some play.
Not sure what the next step should be. My idea is to find someone with a vibration analyzer and try to record it in flight or do a prop balance just in case, but the intermittent nature of it seems to hint that it won't help?
Any suggestions?
Thanks!