Aasco flywheel is here.

[Jake Raby]

Originally Posted by Jackelfox

I'll be first to admit that even if i sat down and thought about light weight flywheels all week i would be no closer to making a better decision much less a "good" one.

I have a brain but it doesn't have the relevant and necessary motor-knowledge to reason through auto performance decisions like this or most (any) others.

I very much respect and appreciate the amount of time/knowledge that you put into these engines Jake. I hope to be able afford buying myself the benefits of that knowledge in the not too distant future. That said, in the mean time please be patient with us commoners.

No worries..
This is the reason why I am working hard on the tech articles on my site and putting them in laymans terms as mush as possible..

[edevlin]

I have the Aasco LWFW with a sprung clutch. Acceleration and responsiveness is great, shifting is butter smooth. I absolutely love it other than the rattling noise in neutral."

I thought others have reported that a Spec or other sprung clutch with LWF got rid of the rattling noise when the car is in neutral and the clutch is out. Mine does the rattling thing in neutral when the clutch is out, but I thought that was because I was using a stock clutch.

Ed

[23109VC]

so can you do a LWFW as long as you do a sprung clutch - and be okay - or do you still throw it all out of balance and risk crank failure??

[JAAY]

The sprung clutch just absorbs some of the initial shock but does nothing for the harmonics from my understanding. I am putting a stock flywheel back in. I just put the 3.4 in and do not want to chance something as stupid as a flywheel messing the whole thing up.

[brp987]

How about a little balance here? 911s until atleast the early 90's had solid flywheels. Some of the early 911s even had cranks without counterweights. No harmonic balancers. None of these had breakage issues.

As for the "using your brain" comments - there isn't alot of info out there, and alot of it is purposefully mis-info. Does an Aasco lwfw come with a warning like "hey, this things gonna break your crank"? If they really had that tendancy, would they still be selling them? Jakes examples are a small statistical sample set, and under extreme conditions. If you're into sidestepping the clutch throttle down, stuff is going to break. There is driver error involvement. That said, I do appreciate Jakes efforts here.

[sb01box]

Originally Posted by JAAY

The sprung clutch just absorbs some of the initial shock but does nothing for the harmonics from my understanding. I am putting a stock flywheel back in. I just put the 3.4 in and do not want to chance something as stupid as a flywheel messing the whole thing up.

I've read somewhere where a secondary counter rotating shaft with weight is use to counter harmonics forstraight 4 cylinder engines - patented by Mitsubishi??? but these were basically directly driven via chain. is my understanding that DMFW has some sort of spring/elastomer coupling the two disks.

Question, with direct coupling, is the harmonics cancellation accomplished independent of engine rpm.
Question, with spring between the two, taking out harmonics from 700 rpm to 7000 rpm, 10x range would need spring to become 10x stronger??

I may have found answer to question here

http://www.exedyusa.com/multimedia/specsheets/ClutchFundamentals.pdf

RMS leaks are becoming VERY rare.

[jaykay]

this is good news but this is 2000 S 3.2 with only 18k miles on it I am talking about so it has not had enough running time to know

[Darkhamr]

Originally Posted by edevlin

I have the Aasco LWFW with a sprung clutch. Acceleration and responsiveness is great, shifting is butter smooth. I absolutely love it other than the rattling noise in neutral."

I thought others have reported that a Spec or other sprung clutch with LWF got rid of the rattling noise when the car is in neutral and the clutch is out. Mine does the rattling thing in neutral when the clutch is out, but I thought that was because I was using a stock clutch.

Ed

Yeah, I don't know. Sometimes even pushing the clutch in doesn't eliminate the noise. It can be embarrassing at times when people are drooling over your car and then they hear it rattling like an old Ford. I can live with it for the performance though I'm sure I'd have a hard time selling the car with this flywheel installed. LOL