Drive Train Loss
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Joined: Jul 2002
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Drive Train Loss
Was wanting to know what u guys think the drive train loss is on the L's. I found a site that if u type in your 1/4 time and mph then it tells u what your HP and TRQ is.
http://www.zianet.com/lcrs/index2.html
Is this correct or no?
http://www.zianet.com/lcrs/index2.html
Is this correct or no?
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Joined: Mar 1998
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From: Virginia
What we've seen is not always a fixed percentage, it varies depending on just how much power is being made, which tranny is used, etc.
For example, take a Lightning making 360 SAE Net at the flywheel, and on a good eddy curent dyno you get about 290-291 hp, for a 69 hp loss in that 4R100 driveline, that equals 19.16%.
Try putting a "regular" 5.4 F-150 making it's rated 260 SAE Net hp on the dyno with the 4R70W automatic, and you generally get about 195 hp at the wheels, for a 65 hp loss, or 25%. Take that same truck but with the 4R100 tranny, and once again you lose about 69-70 hp to the driveline at stock power levels. Do this with a 2001 or newer 4.6 F-150 automatic making it's 231 hp SAE rating (4R70W) and you generally get about 165-166 at the wheels for a 65 hp loss, 28.14%.
For example, take a Lightning making 360 SAE Net at the flywheel, and on a good eddy curent dyno you get about 290-291 hp, for a 69 hp loss in that 4R100 driveline, that equals 19.16%.
Try putting a "regular" 5.4 F-150 making it's rated 260 SAE Net hp on the dyno with the 4R70W automatic, and you generally get about 195 hp at the wheels, for a 65 hp loss, or 25%. Take that same truck but with the 4R100 tranny, and once again you lose about 69-70 hp to the driveline at stock power levels. Do this with a 2001 or newer 4.6 F-150 automatic making it's 231 hp SAE rating (4R70W) and you generally get about 165-166 at the wheels for a 65 hp loss, 28.14%.
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Joined: Mar 2000
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From: Cincinnati, OH
In a Lightning at max torque in 3rd gear (only way to measure it right) it's 11.2%, and I'm not even going to get into how accurate that number is unless you're an automotive or electricl engineer with experience on drivetrain testing. Evey time I mention it I get all kinds of "you're phu**ing crazy" comments, but that's the number, if you must know. It also has very little to do with the real world, just know for an automatic it's darned efficient.
G
G
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Lol factory, I would not call u stupid because i have no idea about drive train testing so i'l beleive u hehe. Thank's for your help, I knew they were full of bs. Just like all they guys that hang out on the cruise street saying that there Escort ZX1 can run 12s on a home made turbo ROFL, Well anyways thank's for info
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