Lightened Flywheel ???

[S5TVR]

Has anyone fitted one such as the "Raceproved" unit and if so did they notice much of a difference in performance ?

Edited by S5TVR on Monday 1st December 21:56

[ceejay]

Had one fitted to the race car last season (now for sale in the classifieds). Doesn't make a huge difference but every little helps. Engine seemed to rev more freely with it.

ceejay

[900T-R]

Sheesh - and I thought the one I had for two days back in 2004 didn't have much of a flywheel to begin with!

[tcant]

Racing Green have just fitted the lightened flywheel to my Tuscan. I pick it up on Saturday. Will post again once I've had chance to try it out!

[trackcar]

the SP6 flywheel is surprisingly heavy as standard!

[tuscan_al]

8 kg isnt it?

THe rg one is 6 kg and super light 4 kg?

I had a lightweight put into my 200sx and that was 8 kg as a super light, from the std 12kg one.

I dont think these cars are exactly sluggish in revving up anyway, and prefer not to loose engine braking.

[trackcar]

lose engine braking? you'll gain engine braking because of less angular momentum of the lighter flywheel ..

Edited by trackcar on Wednesday 3rd December 14:02

[Buffoon]

trackcar said:

lose engine braking? you'll gain engine braking because of less angular momentum of the lighter flywheel ..

Edited by trackcar on Wednesday 3rd December 14:02

Hear what you are getting at, but when you change down a heavier flywheel will be more resitive to change.

A matter of horses for courses. On track you would not want to use the Clutch to much as a brake, but for a lazy plod on the motorway things are different

[trackcar]

Buffoon said:

trackcar said:

lose engine braking? you'll gain engine braking because of less angular momentum of the lighter flywheel ..

Edited by trackcar on Wednesday 3rd December 14:02

Hear what you are getting at, but when you change down a heavier flywheel will be more resitive to change.

A matter of horses for courses. On track you would not want to use the Clutch to much as a brake, but for a lazy plod on the motorway things are different

Ah .. you're one of those "asking for trouble" drivers who don't match revs to speed on downchanges? In that case you defo need a light flywheel which will spin up quickly and save from death by hedgerow

Edited by trackcar on Wednesday 3rd December 16:06

[willtvr]

trackcar said:

Buffoon said:

trackcar said:

lose engine braking? you'll gain engine braking because of less angular momentum of the lighter flywheel ..

Edited by trackcar on Wednesday 3rd December 14:02

Hear what you are getting at, but when you change down a heavier flywheel will be more resitive to change.

A matter of horses for courses. On track you would not want to use the Clutch to much as a brake, but for a lazy plod on the motorway things are different

Ah .. you're one of those "asking for trouble" drivers who don't match revs to speed on downchanges? In that case you defo need a light flywheel which will spin up quickly and save from death by hedgerow

Edited by trackcar on Wednesday 3rd December 16:06

Indeed, the apparently dying art of double de-clutching

[GreenV8S]

Buffoon said:

use the Clutch ... as a brake

You don't want to be doing that ever, in a powerful rwd car. Not on the track, not on public roads. Just don't.

[Far Eastender]

I tried that a couple of years ago, did a perfect 180 and went back up the road the way I had come. Never tried to repeat it though.

[Buffoon]

Yeah Yeah Yeah. Beat me up why don't you.

Not suggesting it is good practice, and there is a big difference between dumping the clutch with engine at tick over, and easing the clutch up with engine speed just below that of drivetrain. The latter (again not to be recommended) encourages the pops & bangs that keep us smiling

[willtvr]

Buffoon said:

Yeah Yeah Yeah. Beat me up why don't you.

Not suggesting it is good practice, and there is a big difference between dumping the clutch with engine at tick over, and easing the clutch up with engine speed just below that of drivetrain. The latter (again not to be recommended) encourages the pops & bangs that keep us smiling

Always thought it was the engine on the overrun that caused the noises, not the clutch engagement?

[Buffoon]

willtvr said:

Buffoon said:

Yeah Yeah Yeah. Beat me up why don't you.

Not suggesting it is good practice, and there is a big difference between dumping the clutch with engine at tick over, and easing the clutch up with engine speed just below that of drivetrain. The latter (again not to be recommended) encourages the pops & bangs that keep us smiling

Always thought it was the engine on the overrun that caused the noises, not the clutch engagement?

I give up.

This is effectively overrun' i.e. engine going faster than position of hoof on accelerator requires.

Anyway, for all you saintly drivers out there, I must come for a spin with you one day to see how to do it properly. Unless you are doubling the clutch you are darned clever. Apart from pulling away from a stand you fellahs don't need a clutch at all, which should dramtically reduce the number of failures.

[ceejay]

Heel and toe is really easy to learn in a TVR once you've set the pedals up properly. Matching revs on downshift is important in light RWD cars especially in this weather.

Any way back to the LW flywheel, did I mention I have a Raceproved one for sale?

ceejay

[Buffoon]

ceejay said:

Heel and toe is really easy to learn in a TVR

Heel and toe eh?
Used to do that to the sound of 'Tiger Feet'

I need to change my PH name to 'IKNOWHOWTODRIVEHONEST'

My contribution to this thread has been like a Spike Milligan moment - digging a hole in the North Sea. Hard work and pointless.

I trust that when you guys drive home tonight, you will watch your tachos very closely. If when you lift the clutch, the revs waver up or down slightly, you will post on here next week to confess to Father Buffoon?

[TVR_owner]

Double declutching should not be confused with heeling and toeing - they are very different. One is appropriate for smooth safe downchanges, the other more approriate for non-syncro gearboxes.

[Whitey]

TVR_owner said:

Double declutching should not be confused with heeling and toeing - they are very different. One is appropriate for smooth safe downchanges, the other more approriate for non-syncro gearboxes.

Indeed, and also not to be confused with giving the throttle a blip as you change down (for the sound effects) which many on PH seem to think is heel n toe. Innit.

[willtvr]

TVR_owner said:

Double declutching should not be confused with heeling and toeing - they are very different. One is appropriate for smooth safe downchanges, the other more approriate for non-syncro gearboxes.

Combining the two gives my age away I suppose John