I did a search through the various flywheel threads, and I really didn't see any one talk about vibration issues or idle roughness as it relates to a light weight flywheel. For those of you with light weight flywheels, did you notice any increase in idle roughness or vibration in the cabin? I especially want to here from the racing beat and Mazdaspeed folks.

 

No change that I ever experienced.

 

No changes here...

 

I have the Mazdaspeed and have had no problems.

 

Running ACT Prolite here, no issues. Have tested Racing Beat and Mazdaspeed with same results with exception of lighter wallet and more weight (Mazdaspeed)

 

no change from stock, i still get some rough idle at times but its just as much as it was when i had the stock fw.

 

Perfect idle here with ACT prolite - no change .
what are you worried about idle for anyway ? I'd be more concerned about drivability - which is not as good as stock but not too bad .

 

pardon me for thread jacking...

do you guys have a harder time driving around on lower speeds (parking lots)?

 

Fine once you get used to it . When I really notice it is when I get distracted at the lights then realise cars behind me are waiting . To take off quickly without thinking about it can be a mission & I end up giving it lots of revs which is not smooth driving at all .
If you are taking your time you can take off just as smoothly as stock from less than 2000 rpm.

 

its harder, but its not impossible, if you can drive around at a steady rate in 1st gear as it is then you will have no problems.

 

No issues in any category.

 

I know how it is how to drive with a lighter flywheel 'cause I have an 8.2 lb chromoly flywheel on my other car that i use for drifting and autocross, i just don't know how it would be on a rotary since a totaly different platform. but so far according you your feedbacks, it sounds like it's no different from a lightweight flywheel on a hi rev piston engine.

 

i have an 8.4lb flywheel and i was very suprised when it idled smooth as glass, it took me about a week or so to get used to driving around with it, i have a wierd driveway and backing out at low rpms took some getting used to, but all in all i love it, totally worth the money

 

I have the RB flywheel and there are no idling problems.

 

ACT Prolite. No problems.

 

I have the racing beat one and theres no change

 

Please understand that Brillo is so **** about how smooth the car idles that if a fly landed on a pulley while it was idling, he'd feel it and get mad! I'm not kidding!

 

maybe he just needs a hug