Subject	One major reason is they are too light which = low inertia
Posted by	LitlElvis on December 21, 2009 at 11:08 AM
	This message has been viewed 91 times.
In Reply To	Why do so many people use them then? posted by MeatMan - 604Z.ca - on December 20, 2009 at 11:09 PM
Message	and that will tend to bog the engine on launch because there just isn't enough inertia to accelerate the car and keep the engine in it's powerband. A good rule of thumb for flywheel weight and drag racing is the flywheel should weigh at least 1% of the total vehicle weight... 3600 lb car = 36 lb flywheel.
Follow Ups	RPS Max series 6 puck clutch Fubar'd after 3000 miles! - MeatMan - 604Z.ca - 22:12:08 12/20/09 Did you install it right, adjustments and bleed the clutch - Nostype2 22:22:26 12/20/09 I did all you mentioned, the pedal travel was ~ 1" before - MeatMan - 604Z.ca - 22:33:16 12/20/09 Why would you use an aluminum flywheel for drag racing? (n/m) - Bernie (NoVA) 22:28:48 12/20/09 It was on the car when I bought it..... - MeatMan - 604Z.ca - 22:34:50 12/20/09 IMHO aluminum flywheels are not appropriate for that - Bernie (NoVA) 22:36:26 12/20/09 Why do so many people use them then? - MeatMan - 604Z.ca - 23:09:20 12/20/09 Light flywheels tend to beat up clutches when launching - Bernie (NoVA) 23:38:03 12/20/09 yup. what he said ^ (n/m) - ForceFedTT (SoCal) 03:03:22 12/21/09 Probably has to do with the limited ability for the friction - Ash's Z 05:57:30 12/21/09 The solid insert flywheels will warp quickly......... - Greg D. (Specialty-Z) 14:04:51 12/21/09 Also the stock flywheel is heavier then the rps - dream Z (MD) 10:16:01 12/22/09 cuz they dont use them for drag race and 30 hard launches yo (n/m) - zyoulater 04:06:50 12/21/09 One major reason is they are too light which = low inertia - LitlElvis 11:08:11 12/21/09 Re: Why do so many people use them then? - Greg D. (Specialty-Z) 13:50:16 12/21/09 Is that a pilot bushing behind the needle bearing? (n/m) - Eric(NJ) 22:33:00 12/20/09 I'm hoping its just grease. (n/m) - Bernie (NoVA) 22:35:29 12/20/09 The needle bearing was also installed when I bought the car. - MeatMan - 604Z.ca - 23:12:04 12/20/09 Looks like cracks :( (n/m) - Woody75 (Denver) 09:33:51 12/21/09 Can the crank actually crack like that? (n/m) - MeatMan - 604Z.ca - 10:01:24 12/21/09 Doubtful, cracks start on the OD of a shaft and propagate - LitlElvis 11:16:33 12/21/09 I was thinking cracks in the stock bushing, not the crank. (n/m) - Woody75 (Denver) 12:26:24 12/21/09 Re: RPS Max series 6 puck clutch Fubar'd after 3000 miles! - CmyZ 23:35:09 12/20/09 looks like a left foot problem (n/m) - Adam (NoVA) 04:39:42 12/21/09 Looks like it has been subjected to excessive slipping - Ash's Z 05:20:53 12/21/09 I had thougt I had adjusted the cluthe properly... - MeatMan - 604Z.ca - 10:00:00 12/21/09 That makes more sense........ - Greg D. (Specialty-Z) 10:44:09 12/21/09 A little reality check............. - Greg D. (Specialty-Z) 10:38:43 12/21/09 and there you have it (n/m) - zgene4 11:12:08 12/21/09 Very helpfull post...thanks. (n/m) - Wright (Ca) 12:07:26 12/21/09 Thanks for the Info everyone, very helpfull. (n/m) - mscurfield 19:34:48 12/22/09 I had about 20 or 25 low 1.6 60ft and 15,000 miles on my - dream Z (MD) 10:11:46 12/22/09 Curios here, how were you making 12psi of boost at launch? - Ash's Z 11:16:16 12/22/09 Josh has Racelogic Traction control with boost launch - mscurfield 19:30:22 12/22/09 Just about right, I have the Techtom IIC-460. - MeatMan - 604Z.ca - 22:26:34 12/22/09
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