That only applies to the launch. After the car is moving, and the clutch and tires are fully engaged, the FW provides nothing but a LOSS in torque.

 

A lighter flywheel will indeed acelerate a car faster, improve torque and reduce power lost through the drivetrain at the wheel. I know this from personal experience and not from speculation. As a former rotary engine tuner, i installed a 8LB flywheel to an RX-7 that had an 18 lb flywheel. The car dynoed 371 hp previous to the flywheel replacement, and 382 afterwards. Obvioulsly flywheel horsepowre is unchanged. The torque curve suffered a similar fate (improvement).

Driving the car was a whole deferent experience. The car felt a lot quicker than the 11 Hp gained. however, the improved acceleration seems to diminish while progressing through the gears( 4th and 5th gears).

 

Sorry, not intentional. Maybe I double clicked or something.

 

I don't agree - a heavier flywheel requires more torque to rotate, and greater negative torque to slow down.

A flywheel serves many purposes beyond a mere friction surface, one of which is to serve as an energy storage device (for those who never took or understood physics - press the

 

I was thinking about getting the Toda flywheel and disc combination. Why is it not able to be resurfaced? How often and under what situation would you need to resurface it? Thanks.

 

The Toda can't be resurfaced because there's so little material to work with in the first place. The Toda is about as light as you can go with a conventional clutch setup, which ultimately equates to a disposable flywheel - not cheap for your standard customer - not too bad if you're a sponsored race team.
For note: I could NOT perceive any performance advantage of the Toda over the Comptech. The Toda is about a pound lighter. This may equate to a small advantage if your car is a race car and every ounce counts, but not to a street car.
Additionally, I think ACT just came out with a lightened FW for the S2000. This is pretty cool because I love their pressure plate. I don't have details on the new FW, but it may be worth looking into.

My first FW/PP upgrade was the Toda FW and the Mugen PP. I have a stock motor and it slipped after no more than 3,000 miles of use. King was kind enough to refund my money and I bought the Comptech FW/ACT PP combo and have had no problems at all with at all - Love that combo. I'm using the OEM disc and it works well with just about any aftermarket (conventional) clutch.

 

The concept of torque in physics, also called moment or couple, originated with the work of Archimedes on levers. Informally, torque can be thought of as "rotational force". The weight that rests on a lever, multiplied by its distance from the lever's fulcrum is the torque. For example, a weight of three newtons resting two metres from the fulcrum exerts the same torque as one newton resting six metres from the fulcrum. This assumes the force is in a direction at right angles to a straight lever.
basically, torque is a measurement, of how much force it takes to slow any given object rotating at a given RPM. yes the variables are fixed. so if you take a 300 lb crankshaft and spin it at 300 RPM and try to stop it , a given number shall ensue.
now if you remove 100 lbs from that same crankshaft, and spin it 300 RPM again, then apply the same stopping force, it is going to slow quicker. thus producing less torque. do you get it now, lightening the flywheel causes many unforseen problems. for one it can cause spark scatter, because of transitive crankshaft vibrations. ask some of the comptech charged guys, ive seen the complaints theyve had. it also makes the car much harder to get moving IE loss of torque. read some on kinetic energy. once an object is moving it is hard to get it to stop, if its weight increase that calculation becomes exponential.
anyways, laters folks. dave

 

That's because a stock weighted flywheel stores more energy (inertia) so it's not because of torque loss.

 

I have the Comptech Lightweight with ACT HD PP and OEM disc...for everybody that says the car is harder to get moving...thats sad. I will admit since I had the new clutch/flywheel, I stalled the car ONCE. It was the very first stop light I came to after getting it installed. And I would say it was more of the Pressure Plates fault for the lower/stonger/gripier engagement...I tried to slip it out too far too fast without enough gas.

I haven't stalled it since then...I love the set-up. I works great and shifts smoother...I'm going to do a full wirte up on my opinion of it right after I ride in another stock S and compare. But the car does feel noticeably faster in the lower gears...not as noticeable in higher gears. I have also noticed slightly faster "trap speeds" on my normal local on ramps...about a 2mph average on a couple of them...where I'd used to get up to 88-92 I now get to 91-94...

I personally see NO disadvantages to the Comptech Flywheel. Advantages are not HUGE but they are noticeable and they make the car more fun (if that was possible). But again, I really see no disadvantages to having one...if your getting the clutch done...throw one of these in too.

 

just wondering on the difference of the clutch engagement point once the aftermarket setup is put in.. (comptech fw, act clutch, and act pp)