1fstcorrado

i figured if anyone would have answer it would be here...plus i am sure others might be interested....does a honda gear box suck up 100-200whp. people say 12-15% but does it hold true for all hp levels? i know of it holding true for 200hp motors on an engine dyno to a wheel dyno

Silverhatch

bump for a good question i would like to know also...cause all i have ever heard is 15%

DaveF

you are still going to have the same amount of drivetrain loss no mater how much hp you make... the drivetrain is always going to be there.

say its 15%(just a number) so... wether you have 100hp... or 1000 hp its always going to be "15%"


I could be wrong though... so dont take my word for it... this just seems logical.

NativeSon

You're partially right. It takes a certain amount of horsepower to run the drivetrain, but the amount of power required doesn't neccessarily increase as a % of total horsepower. Example: Your 5spd manual trans, takes 30 horsepower to run it including your LSD, heavier duty hubs and axles, and slicks. Your car makes 200 HP at the crank, so you have 15% drivetrain loss. If you increased your HP output, but didn't change any of the drivetrain components, it still only takes 30 HP to run your drivetrain. So, all things being equal except for the HP output, your drivetrain uses a portion of your total power output, but that % diminishes as your power level increases. The variable comes from increasing the weight and friction coefficient of the hardware in your drivetrain as you try and make it stronger to handle the increased power. like getting straight cut gears, a spool, bigger slicks, bigger brakes, etc....

Silverhatch

thanks for the info..i was always curious about this.

vtecmissle

as the torque goes up so does friction, stress , and loss. Plain and simple. If its getting stressed its getting hotter and that is mechanical energy being turned into thermal energy.

MAX_CFM

B series is closer to 20 percent...

Billy T.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtecmissle &raquo;</TD></TR><TR><TD CLASS="quote">as the torque goes up so does friction, stress , and loss. Plain and simple. If its getting stressed its getting hotter and that is mechanical energy being turned into thermal energy.</TD></TR></TABLE>