A light action clutch for the 'Ace

Crazy L · Post by **Crazy L** » Thu Oct 09, 2014 9:29 am

Hi all

Just a quicky. Does anyone know if a lighter action clutch is possible? The ace one gets heavy quite quickly.

Ta muchly in advance

Crazy L · Post by **Crazy L** » Thu Oct 09, 2014 12:03 pm

Once again, as with the bar risers, I may have to take matters in to my own hands and do some hardcore research in to what makes a clutch easier, then cobble something together.

Unless someone knows, is it slave cylinder diameter? Or to do with master cylinder bore? Who knows, but I will investigate further.

Maybe a free bridgeport at my place of work can help me out.

bad2bone13 · Post by **bad2bone13** » Thu Oct 09, 2014 2:58 pm

I have high bars on mine & have fitted XJR1300 Master cylinder, I have a fairly light clutch, also my clutch is standard no heavy duty springs etc...
but it is a Thunderace clutch in my RU...
I don't know if this helps..
Cheers
Paul.

yzfpaul · Post by **yzfpaul** » Thu Oct 09, 2014 4:32 pm

you could try using a yzf 750 mclnder that might help

Crazy L · Post by **Crazy L** » Fri Oct 10, 2014 10:53 am

yzfpaul wrote:you could try using a yzf 750 mclnder that might help

Good idea. I'm assuming that has a different bore size or something then? Am I right in thinking it has a remote resevoir?

If the bore is the same, I doubt it'd make any difference.

bad2bone13 · Post by **bad2bone13** » Fri Oct 10, 2014 11:12 am

The YZF is a remote but the bore size is no bigger than the exup...
Not sure what route you need to go down..

Crazy L · Post by **Crazy L** » Sat Oct 11, 2014 11:08 pm

Apparently, the smaller the bore on the master cylinder, the easier it is, but the longer the stroke needed to provide the same pressure. Which means the lever would have to come back to the bar.

So, on this premise, would a larger diameter slave have the same results? Only without the lever coming back to the bar?

Hmmm

YAMAEXUP · Post by **YAMAEXUP** » Tue Oct 14, 2014 3:18 pm

I have a ZXR750R master cylinder on my '90 Exup-R, together with a braided steel line & set of heavy duty clutch springs from PDQ. The clutch pull is light as the adjustable lever works well. I replaced the seals in the slave cylinder about 2,000 miles ago & while doing that I pulled the clutch rod out & cleaned the chain lube off. It all makes it worthwhile

YAMAEXUP · Post by **YAMAEXUP** » Tue Oct 14, 2014 3:21 pm

Have a look at this thread as well

http://www.exup1000.co.uk/phpBB2/viewtopic.php?t=13005

Killawife · Post by **Killawife** » Sun Oct 26, 2014 11:28 pm

I put a Aprilia RSV 1000 clutch master cylinder on my YZF. It made a world of difference. Much lighter and smoother clutch action. Its a radial brembo so a bit pricey but awesome nonetheless.

I still have it in my basement.

Exup 1000

A light action clutch for the 'Ace

A light action clutch for the 'Ace

Re Lighter clutch..

Re.. master cylinder