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need help calc HP

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Old Sep 18, 2002 | 11:58 PM
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Default need help calc HP
Used a Gtech to measure my truck's HP. Got 150 rwhp. What does that translate into through transmission loss?
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Old Sep 19, 2002 | 12:34 AM
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Default Re: need help calc HP (jonny4523)
I think from the flywheel to the rear wheels is a lose of 15-20. Is that what you are asking?
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Old Sep 19, 2002 | 01:12 AM
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Default Re: need help calc HP (Justin79-L-82)
ya, thats exactly what i am looking for. thanks. Is he right about that? it sounds familiar
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Old Sep 19, 2002 | 03:45 PM
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Default Re: need help calc HP (jonny4523)
Remember i'm talking 15 - 20 percent of horsepower not 15 - 20 horsepower. I forgot that part :D
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Old Sep 19, 2002 | 03:56 PM
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Default Re: need help calc HP (jonny4523)
150*1.17=175.5hp

That's using 17% drivetrain losses.
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Old Sep 19, 2002 | 05:10 PM
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Default Re: need help calc HP (Justin79-L-82)
Remember i'm talking 15 - 20 percent of horsepower not 15 - 20 horsepower. I forgot that part :D
ya, i know :lol:
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Old Sep 20, 2002 | 03:39 AM
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Default Re: need help calc HP (e3pres)
150*1.17=175.5hp

That's using 17% drivetrain losses.
Using your numbers 175.5*.17=29.8. 175.5-29.8=145.7.

I believe the correct way to calculate this is: 150/.83=180.7. 180.7*.17=30.7. 180.7-30.7=150.

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Old Sep 20, 2002 | 12:21 PM
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Default Re: need help calc HP (glen242)
150*1.17=175.5hp

That's using 17% drivetrain losses.


Using your numbers 175.5*.17=29.8. 175.5-29.8=145.7.

I believe the correct way to calculate this is: 150/.83=180.7. 180.7*.17=30.7. 180.7-30.7=150.
Ok, so you caught me. :bb I didn't do my algebra check. :lol:
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Old Sep 20, 2002 | 12:26 PM
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Default Re: need help calc HP (e3pres)
The percentages that I have heard most often:

15% manual

20% Automatic
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