[Fwd: Re: [Fwd: Re: Broken Tranny - kinda long]] rain.CC.Lehigh.EDU

Very good check list for ribcase inspection. Wasn't there also a change 
in the pressure angle on the gear teeth at some point during ribcase 
production? So the two gears wouldn't interchange even though the tooth 
count was the same? It is something I was told many years ago and I've 
been trying to find documentation for, and the year that it changed. Is 
it possible to tell the year of the ribcase beyond the obvious addition 
of a backup light switch? If someone could shed some light on the 
subject of pressure angles I'd be thankful.
John

bushwacker4@zoomtown.com wrote:

>Some info on the rib case trannies: