how much transmission will i need to handle 1000hp
04-25-2006, 12:24 AM
#11
10x
VIP Member
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.
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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Fountain powerboats rule "The Preacher"
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[email protected]
www.chicagopowerboat.com
04-25-2006, 06:59 AM
#12
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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
04-25-2006, 07:58 AM
#13
Geronimo36
Gold Member
Re: how much transmission will i need to handle 1000hp
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.
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.
