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how much transmission will i need to handle 1000hp

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Old 04-25-2006, 01:24 AM
  #11
10x
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Default Re: how much transmission will i need to handle 1000hp

Phil, as it was explained to me by Tom Huber last spring, the number 1200, 1330, 1450 etc does'nt stand for the hp rating, it stands for the amount of torque that it'll safely withstand.
For example, the 1330's will safely take 1330 ft. lbs. of torque. BUT, you take your maximum torque, then multiply that # by 30%, and you have the number of tranny that you should run.
The reason they add the 30%, is to compensate for when the props leave the water and re-enter. There's a serious torque surge when the prop enters the water, and if you don't compensate for it by atleast 30%, you'll end up smokin the trannys.
If ya need to, give me a call and I'll try to explain it a little deeper.

Frank.
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Old 04-25-2006, 07:59 AM
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Default Re: how much transmission will i need to handle 1000hp

go it frank, do you know if bam rates thier trannies the same way? thx, phil
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Old 04-25-2006, 08:58 AM
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Default Re: how much transmission will i need to handle 1000hp

Quote:
Originally Posted by 10x
Phil, as it was explained to me by Tom Huber last spring, the number 1200, 1330, 1450 etc does'nt stand for the hp rating, it stands for the amount of torque that it'll safely withstand.
For example, the 1330's will safely take 1330 ft. lbs. of torque. BUT, you take your maximum torque, then multiply that # by 30%, and you have the number of tranny that you should run.
The reason they add the 30%, is to compensate for when the props leave the water and re-enter. There's a serious torque surge when the prop enters the water, and if you don't compensate for it by atleast 30%, you'll end up smokin the trannys.
If ya need to, give me a call and I'll try to explain it a little deeper.

Frank.
What he said!
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