[Fot] TR3/4/5/6 Syncro Cups

[Terry and Cindy]

 I have found 2 problems with the copies that abound. Firstly, the taper
angle is wrongly cut. This can be detected by putting some bearing blue on
the syncro ring then pressing it onto the gear and rotating it. A mis-match
is obvious. The second problem is the thickness. Once the taper angle is
proven to be correct, the back clearance between the dog teeth and the
mating face on the gear is down as low as O.010". This is basically worn
out. Thankfully, we still have a few new STANPART ones left here. 
Terry O'Beirne, Australia