Flywheel
12-15-2003, 05:17 PM
#5
Senior Member
Join Date: Oct 2003
Location: Boston Ma.
Posts: 1,420
Originally Posted by j9fd3s' date='Dec 15 2003, 02:34 PM
i have the 17lbs racing beat wheel and i think its what it should have come with from the factory. the 12b is a little lighter on the street than what i expect, imo
12-15-2003, 05:31 PM
#6
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Join Date: May 2002
Location: California
Posts: 22,465
Originally Posted by RONIN FC' date='Dec 15 2003, 03:17 PM
How does the 17 lb feel? Does it leave much to be desired? Would you buy the same one again? Do you drag with your car?
12-15-2003, 11:01 PM
#7
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Join Date: Mar 2003
Location: Sunny South Florida :)
Posts: 1,963
I'm going to be using a 9.5 lb on my car that will be running in january, that's probably too light for the street. They use a heavy flywheel to make the motor rev and accelorate smoother, maily because there is not much rotating weight inside the motor.
with too light of a flywheel, taking off can be a bear because without the rotating weight it will be much easier to stall. also if you acceltorate in first or second, and then let off the gas (with it still in gear) you can get a bucking motion in the car which realy makes it tough to cruise in, but with that light of a flywheel, my 5mph-60mph should be sickening. woooo hoooooo
with too light of a flywheel, taking off can be a bear because without the rotating weight it will be much easier to stall. also if you acceltorate in first or second, and then let off the gas (with it still in gear) you can get a bucking motion in the car which realy makes it tough to cruise in, but with that light of a flywheel, my 5mph-60mph should be sickening. woooo hoooooo
12-15-2003, 11:13 PM
#8
Senior Member
Join Date: Apr 2002
Location: IL
Posts: 2,930
Actually on a s4 13B you have about 20 lbs of rotors alone orbiting inside yer engine, I don't think you need more mass from the flywheel.
The engine has **** for low rpm torque, as a result the added inertia when you go to engage the clutch keeps it from stalling easily compared to a piston motor with more torque down low.
I run the rb aluminum flywheel, its very easily streetable, you just have to drive well. It will be easy to kill it leaving stops, especially when you're starting from a stop up a hill. You have to pay attention to the clutch more is all, you get a much more responsive engine, quicker shifts (no more waiting for rpms to change, you make them change immediately with the throttle, it gives greater control) and greater acceleration in the lower gears. It takes a bit more rpm and more slipping from stops for sure, if you reduce the weight of your car significantly it will get moving easier though
The engine has **** for low rpm torque, as a result the added inertia when you go to engage the clutch keeps it from stalling easily compared to a piston motor with more torque down low.
I run the rb aluminum flywheel, its very easily streetable, you just have to drive well. It will be easy to kill it leaving stops, especially when you're starting from a stop up a hill. You have to pay attention to the clutch more is all, you get a much more responsive engine, quicker shifts (no more waiting for rpms to change, you make them change immediately with the throttle, it gives greater control) and greater acceleration in the lower gears. It takes a bit more rpm and more slipping from stops for sure, if you reduce the weight of your car significantly it will get moving easier though