Cryotreat Tranny?
- Thread starter zoomzoom02
- Start date
Is it at all a surprise that they are chewing through gears at 750 hp??? LOL... I mean honestly that's about 7 times what the gears were rated for... a "good" factor of safety in engineering is usually only 3-5... I have no idea what the auto industry uses... but that would say that 300-500 hp is probably at the theoretical limit of our gearing... so you SHOULD chew through gears at 750 hp... it's still impressive nonetheless though!
turbo_p5... do you have anything to compare against as far breaking trannies before??? I guess my thought is that for the longevity of your cyroed tranny to be of any actual "experimental" value to the rest of us we'd have to know a comparison between your failure rates before using cryo and failure rates after. If your cryoed tranny never fails that doesn't really mean that a non-cryo tranny wouldn't last as well.. the only thing it actually means is the obviously.. your trany didn't fail. Doesn't tell us if the cryo helps or not... sorry to be long winded about that point but trying to make it clear for any and all when they read this so that they understand that just because a treated tranny didn't fail doesn't mean that the treatment is the reason it didn't fail unless there is an actual change in failure rates or modes relative to pre-treatment conditions.
turbo_p5... do you have anything to compare against as far breaking trannies before??? I guess my thought is that for the longevity of your cyroed tranny to be of any actual "experimental" value to the rest of us we'd have to know a comparison between your failure rates before using cryo and failure rates after. If your cryoed tranny never fails that doesn't really mean that a non-cryo tranny wouldn't last as well.. the only thing it actually means is the obviously.. your trany didn't fail. Doesn't tell us if the cryo helps or not... sorry to be long winded about that point but trying to make it clear for any and all when they read this so that they understand that just because a treated tranny didn't fail doesn't mean that the treatment is the reason it didn't fail unless there is an actual change in failure rates or modes relative to pre-treatment conditions.
synchro doesn't bear the load during power application... so in theory the synchro should never see the 750... synchros' are purely there to make it so two different speed spinning shafts can get lined up... nothing else... so in other words synchros only break due to shifting that is not 100% correct... if you have no power being applied (which is what SHOULD be the case during a gear change) you'll never bother the synchro regardless of the power output capability of the engine.ddogg777 said:
Doh!!
Well, I guess if they were dragging it still would be very easy to chew up the sychros during shifting. I would just like to know at what point the torque actually ripped gears. I suppose the shafts would break before the gears though. (The moments of inertias are largely affected by distance from center of material, or radius in this case.)
Well, I guess if they were dragging it still would be very easy to chew up the sychros during shifting. I would just like to know at what point the torque actually ripped gears. I suppose the shafts would break before the gears though. (The moments of inertias are largely affected by distance from center of material, or radius in this case.)
I'd assume like you that they would chew up synchros too just because of the nature of shifting... get anything lined up wrong and give it power.... probably wouldn't be good! I'd wonder too what would go first... all depends I guess, and it could vary tranny to tranny 
