How much power will a stock tranny stand

[Jar350r]

Just wondering how much power a stock tranny can handle

[Polonda]

That depends on how the tranny is treated while riding and it's condition. They're pretty bulletproof until you get to the 60-70hp mark if you ask me. Many even run very good conditioned ones in 90-100hp big bores, but at any moment they will throw gears through the cases.

High horse drag motors should definitely go billet 1-5 from Nate McCoy.

[Piediddy]

This is just my opinion from my experience. Anything over a 330cc I wouldn't run stock tranny gears. I had a puma and prox370 on gas break 2nd gear and sling it through the left case. Had about $7k into a build, drove for 4 hours and within an hour of riding had 2nd gear laying in the sand.

[Jar350r]

Well got about 60 to 65 but never put it in the sand just track . I bet the sand a paddles will be hard on it

[derby]

It can also be the condition of the tranny you start with.  I have found that of the trannies I have broken it is always second gear.  You can back cut the dogs and treat the tranny and it will help it live.  I have seen oem overrides do fine in high hp bikes but when you start shifting the tranny at wot on a non-overide that is when they break.  I think the puma motors were the first setup to really be plagued with tranny issues.  It was enough hp to break it.  The saber will do the same but most of those built have overrides.

[Rupp250]

I have been talking to Nate about this lately. I think he only has 1 maybe 2 sets of gears left.

With the dwindling supply of good used gears, is there a need for a set of replacement billet gears. Something that will be a drop in for a stock set-up.

I use my current bike for everything, dune riding, dirt trails, and 300ft. Although I would like a over ride for drag racing, I don't think I would like it for dune riding.  

So, is there enough of a need for them to get them made?

[seanoktm]

I thought Nate was having more billet tranys made? With a thinner 4th counter shaft gear so do have to mod the gear or fork to prevent them rubbing. At least that's what he told me last October when I bought my billet trans I think he had 4 left at that point.

[363 stroker]

This is just my opinion from my experience. Anything over a 330cc I wouldn't run stock tranny gears. I had a puma and prox370 on gas break 2nd gear and sling it through the left case. Had about $7k into a build, drove for 4 hours and within an hour of riding had 2nd gear laying in the sand.

I had the same thing happen to me twice.  Prox-370 about 6o hp and it was 2nd gear both times.  I recently got a set of Baldwin gears from Mark himself.  We will see how these do on my new Sphynx.

[seanoktm]

I thought Nate was having more billet tranys made? With a thinner 4th counter shaft gear so do have to mod the gear or fork to prevent them rubbing. At least that's what he told me last October when I bought my billet trans I think he had 4 left at that point. My stock back cut trans holds up fine in my gas 370 and I ran a stock override that was back cut and cryo'ed in my puma for 2 seasons it held up fine.

[Snowmaker10]

Don't mean to steal your thread, but since the topic is started, does anyone know of a quality place o get gears polished or cryo'ed?

[derby]

I know hybrid engineering can have them done for you.  Pete was great to work with.  Also I had wcr backcut and cryo one for me.  They usually do banshees but they have done several hondas.

http://ch-slone.wix.com/test#!services

[Pumashine]

Have blown out 2nd gear on a 350 pro-x and 431 puma. Since then I do not get to excited to race. OEM case half and tranny runs $500. Do have 100 hours on the Puma without any problem.

[Rman]

Yep, Ive busted 2nd twice, I still cringe sometimes on a second gear start when Im giving it 100%.

[motofool250r]

I had the same thing happen to me twice.  Prox-370 about 6o hp and it was 2nd gear both times.  I recently got a set of Baldwin gears from Mark himself.  We will see how these do on my new Sphynx.

you bought them this year? i called about 8months ago tryign to stir up more sets being produced he was not interested but had my name on a list if they were made. care to elaborate?

[Rupp250]

I just bought a complete motor. I will be taking it completely apart and having these guys cryo it.
http://www.performancecryogenics.com/