Jerry, I'm not experiencing any problems whatsoever. I'm in the process of building my bike and was wondering if these treatments pro long the gear life most of all. Every part of my engine is brand new, every nut, bolt, washer, gear., Everything. I was researching these to see if it would be worth doing on my new trans, shift forks and drum or any other moving internal engine part. Like I said just trying to get info to see if it's worth while to do it on my NOS stuff before I put my engine back together. Thanks for your reply.
If everything is new I would not spend money on any of the treatments. My experience indicates that there are other areas where I would spend my money. I would spend my money on more frequent oil changes, better porting and pipes. I have not seen many problems with the load carrying surfaces on the teeth on Honda gears. The corners of the latching dogs and sockets will get rounded over time and surface treatments will not do much to prevent this from occurring.
Back cutting appeals to our intuition of "sucking the gear into full depth of engagement" but does very little, except on the override transmissions. We back cut gears in our shop but not not recommend it, unless you are trying to save an obsolete gear that has the dogs rounded off. Back cutting, cuts through the case hardening, making the new surface "soft". Many guys that have had their gears back cut swear that they miss less shifts but they would have had similar results if they had just put new gears and shift forks when they repaired the transmission. If we cut an angle that is actually steep enough to suck the gear into it's full engagement depth, it will not disengage freely and result in missed shifts on a conventional transmission.(non override)
Cryo-treating the gears will help relieve stresses a little bit, but still will not prevent 2nd gear from breaking in half if the transmission is abused.
