Drivetrain loss
11-24-2008, 03:58 PM
#1
5th Gear Member
Thread Starter
Join Date: Jul 2007
Location: TX
Posts: 4,897
Drivetrain loss
What percentage drivetrain loss is there on a dyno? Say I'm putting down 337whp on a mustang dyno with 20'' rims/tires, lightweight aluminum driveshaft, 4.10 gears, TR3650 trans, etc.
Do the 20'' wheels come into play? How about the lighter weight driveshaft? Gearing? I've heard the heavier wheels/tires can kill 8-10whp. Trying to get a somewhat accurate bhp number and wondering what factors come into play when calculating drivetrain loss...
Do the 20'' wheels come into play? How about the lighter weight driveshaft? Gearing? I've heard the heavier wheels/tires can kill 8-10whp. Trying to get a somewhat accurate bhp number and wondering what factors come into play when calculating drivetrain loss...
11-25-2008, 08:50 AM
#2
6th Gear Member
The difference between the crank and the RW's is a conglomeration of losses totaling roughly 12-15% of the crank value. We know we can shave a little here and there but I haven't seen numbers for various individual changes between the crank and the wheels.
11-25-2008, 12:21 PM
#5
2nd Gear Member
Join Date: Jan 2007
Location: Plant City FL
Posts: 403
What percentage drivetrain loss is there on a dyno? Say I'm putting down 337whp on a mustang dyno with 20'' rims/tires, lightweight aluminum driveshaft, 4.10 gears, TR3650 trans, etc.
Do the 20'' wheels come into play? How about the lighter weight driveshaft? Gearing? I've heard the heavier wheels/tires can kill 8-10whp. Trying to get a somewhat accurate bhp number and wondering what factors come into play when calculating drivetrain loss...
Do the 20'' wheels come into play? How about the lighter weight driveshaft? Gearing? I've heard the heavier wheels/tires can kill 8-10whp. Trying to get a somewhat accurate bhp number and wondering what factors come into play when calculating drivetrain loss...
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