advise: what flywheel and clutch for my Vx

[StephaneM]

Hello,

I think about going to a Quaife or SPC gearbox with better ratios. I will take this opportunity to go to a lighter flywheel & a new clutch.

I use my car 50% on the track, & 50% on the road. My engine is dry-sumped with the Caterham system. I actually have the SBD TP208 kit, I think I won't go over the TP235.

I'm a little bit lost regarding flywheel & clutch choice.

May I receive some advices about that?

Cheers.

Stéphane.

[Paul McKenzie]

Stephane,

Standard flywheel lightened (or SBD steel flywheel if you're using over 8000rpm) and standard clutch will be fine with that set-up. Get them properly balanced.

Paul

[StephaneM]

Hello,

When you wrote "standard lightened", you mean that it's a machining of my actual flywheel? If yes, what is exactly the machining operation? Is there a drawing somewhee?

Standard flywheel is 7,1kg. When I have a look on the SBD website, there is the possibility of the standard lightened (5,1kg) & the alloy one (3,3 kg). What is the big advantage to save 1,8kg between them? What is the need of the "low noise" option (what noise ? )

There are also the 7,25" solution... is the only advantage is weight saving?

Finally, I saw Un-sprung paddle clutch plate solution wich is very light. is it usable on the road? They say that sintered ones are for racing only, nothing about others.

 

I understood that, in adition of the global car weight savong, it's interesting to save weight here because engine will rev more easilly...

 

Cheers

Stéphane.

[I reply to every thread]

Stephane. I've got pretty much the same spec as you. I have a quaiffe box. I use a QED steel flywheel, sprung paddle & uprated cover from Helix. It's perfectly usable on the road if a little sharp on initial uptake. It also seems fairly strong.

[Anthony]

Hi Stephane

 

I am no expert, but I was very nervous about going to 5.5" as I too wish to maintain drivability on the road.

 

I appreciate many use 5.5" clutch for road cars.

 

I have used an organic clutch which hopefully will be a bit easier on the drive train.

 

Kind regards

 

Anthony

 

Raceco can on and it looks stunning

 

 

 

[Gambo]

I bought a SBD steel flywheel and quatermaster 7.5" twin plate clutch. not much travel and takes a bit of getting used to , but I use mine on the road, no problems. Not the cheapest though! ❗

[Paul McKenzie]

Stephane,

 

If you're sticking at 208, you don't need to spend all that money

 

Send your flywheel to SBD and get it lightened and balanced together with the clutch cover, or get it done in Grenouille Land...if you have a tame and very competent engine builder. At 208 you don't need fancy clutches

 

Paul

[StephaneM]

Thanks for that... it is a fact that Fly-W1 is only 75£ at SBD... (but I don't know if it is the machining operation or a part with no exchange)

no need for an heavy duty clutch cover? (~150£ at SBD) & no need for a special plate?

Cheers

Stéphane

[Paul McKenzie]

Stephane,

That price is for machining your own flywheel/exchange machined flywheel. Nothing else is required...but you must have the machined flywheel and clutch cover balanced..SBD can do that, or you can have it done locally

 

Paul