It's a little more complex situation than it may appear. The two long pipes hanging from the engine resonate much like stings on a instrument - the two pipes may actually be like a tuning fork, held with the tines down. At certain vibration frequencies their vibrations may actually be accentuated. It would be great to tie them to the engine, but you would need a massive heavy support. The solutions are to dampen their vibrations with supports like springs or elastomeric material - or - to tie the two individual pipes rigidly together which raises the their natural frequency by making them stiffer (and also stops them from vibrating like a tuning fork).
David N6359V Ed Burkhead wrote: > > I can't visualize the exhaust pipe support at all. > > Query: since the exhaust pipe is attached to the engine, isn't the > support for it bolted to the engine so it can vibrate along with the > engine? The support for the gascolator is attached to the engine for > this reason. > > -- > Ed Burkhead > Peoria, Ill. > Ercoupe N3802H, 415-D > -- > > [EMAIL PROTECTED] wrote: > > > > What I meant by proper > > support was rplacing the hard mounts from the exhaust pipe to the engine > > mount with the flexible strap called out in the Alon service bulletin which > > removed the angle between the pipes and the spring which supported them from > > the nose gear bracket. > __________________________________________________________________________ ______ > To unsubscribe from this list please send mailto:[EMAIL PROTECTED] > _________________________________________________________ > Enlighten your in-box. http://www.topica.com/t/15 __________________________________________________________________________ ______ To unsubscribe from this list please send mailto:[EMAIL PROTECTED] ________________________________________________________________________ Start an Email List For Free at Topica. http://www.topica.com/register
<<attachment: winmail.dat>>
