QuarterMaster's Lightweight Driveshaft Replacement
For all teh noobs....do you know why your car was listed at the dealer having 281hp and when you hit the dyno its at 230???
It's a thing called drivetrain friction loss. In the process of transmitting the power from the motor to the transmission, to the wheels - power is lost because metal is touching metal and gravity etc.....so your motor essentially gets dragged down.....
a lighter driveshaft in theory should reduce the amount of power lost so maybe now your could make 245 because there is less weight, which causes less friction and less drivetrain friction loss.
So it should free up some power that you already have in your car that is getting sucked by friction. So will it "add" power? I guess that is all in how you think about it. You can say it adds power, but moreso it gives you back power that is being robbed from you. You should see gains on the dyno, since that measures power at the wheel.
It's a thing called drivetrain friction loss. In the process of transmitting the power from the motor to the transmission, to the wheels - power is lost because metal is touching metal and gravity etc.....so your motor essentially gets dragged down.....
a lighter driveshaft in theory should reduce the amount of power lost so maybe now your could make 245 because there is less weight, which causes less friction and less drivetrain friction loss.
So it should free up some power that you already have in your car that is getting sucked by friction. So will it "add" power? I guess that is all in how you think about it. You can say it adds power, but moreso it gives you back power that is being robbed from you. You should see gains on the dyno, since that measures power at the wheel.
Ok, let see some dyno sheet to qualify....anyone?
Think I need to sell my spare rear diff and pick one of these up from Devo. For all you guys arguing over this and that, it's not rocket science, the concept is "shade tree" tried and true. Mustang dime a dozen (granted, two piece for us). I don't know these particular guys from Adam (
), but the only question in my mind is their work and materials. NOT the concept, nor the manner in which they went about it. Being that they do have a reputation in racing circles, I'm confident in looking to pick one up myself. So buyer beware as with anything, but as a fellow (informed) enthusiast, I personally see it as a safe bet.
), but the only question in my mind is their work and materials. NOT the concept, nor the manner in which they went about it. Being that they do have a reputation in racing circles, I'm confident in looking to pick one up myself. So buyer beware as with anything, but as a fellow (informed) enthusiast, I personally see it as a safe bet.
Last edited by Zeus; Jun 18, 2008 at 02:54 PM.
Evolving Member
iTrader: (28)
Joined: Feb 2005
Posts: 243
Likes: 0
From: Everywhere, Chicago - Washington DC
unfortunately we do not have a dyno at the shop but buschur does have a dyno and he should be receiving his driveshaft this week... im sure he will let everyone know what he thinks.
ordering mine tomorrow. spoke to sunny at devo tuning. they sound like great guys and from the info i gathered this is the next best thing from sliced bread. cant wait. thanks sunny and devo
Think I'll add this to my wish list. Got a few things ahead of it but i've wanted to change out the drive shaft to something more durable (less carrier bearings) and with less weight to get more power to the ground. I eagerly await David Buschur's testing!
for the guy with the AYC evo7...why don't u buy it and try it, then YOU can let US know if it works. Nobody here has AYC, so it doesn't make a lick of difference over here.
stock drive shaft weight - 44lbs
drive shaft rotational mass weight loss - 13lbs
drive shaft setup total weight savings - 14.5lbs
devo lightweight drive shaft is the same diameter as the stock DS
stock is 3 piece
devo is 2 piece.
i made this for a quick info guide. lol.
drive shaft rotational mass weight loss - 13lbs
drive shaft setup total weight savings - 14.5lbs
devo lightweight drive shaft is the same diameter as the stock DS
stock is 3 piece
devo is 2 piece.
i made this for a quick info guide. lol.
Last edited by EvoDan2004; Jun 19, 2008 at 05:15 AM.
evodan2004 ordering mine tomorrow. spoke to sunny at devo tuning. they sound like great guys and from the info i gathered this is the next best thing from sliced bread. cant wait. thanks sunny and devo
