double grey and grey pressure plate clamping loads
Turbo Mini Forums

double grey and grey pressure plate clamping loads
does any one have any info for the these ??

if possible an orange plate loads as well .. just for the record

iam running a grey with the back plate machined 1.5mm off the 3 lugs as per turbo daves advice and a race plate and its letting go! BIG TIME!

Edited by BENROSS on 25th Mar, 2008.

I was wrong on the clamping loads.

On TD's advice, its not the 1.5 mm thats important, its to machine the lugs in such a way to get the spring flat when its loaded up. The amount that will need machining away depends on how many straps you have among other things...

Edited by miniminor63 on 25th Mar, 2008.

I have the same problem :(

Team Racing

yes but you have both a turbo and NOS if I am not mistaken? What about turbodaves clutch, did that never happen?

i always used orange ones in me rally x car and it NEVER let go EVER !!! bit heavy for driving in traffic but who cares ! i will be running orange in me turbo when time comes.

Richie

______________________________________________________
TRADER HALL OF FAME
BENROSS...MINIMARK..WOLFIE (comic genius).....CARL....MARTPAUL.......AXEL
______________________________________________________
TRADERS OF SHAME
1 user....pm me 4 details

LEGENDS
MikeRace, Mini13

I've never run my car with Nos, never even mounted the bottle. Doubt I'll bother to be honest.

Team Racing

Yeah I have a problem with clutch slipage using a single grey but I really don't want to go double grey if I can help it!

Im tempted to ditch the whole pre verto setup altogether TBH!

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

Ben,
Switch to the double grey.

I've got the clamping specs i measured on my home PC (which is dead currently), but i recall they are on the site somewhere.

As i recall though, the double grey is around 25%-30% more clamping than the single grey.

The single Grey has a very narrow 'peak' clamping range, which is sufficiently high for many folks, but once the plate wears, and falls just outside of this range, then slippage will occur.

Edited by turbodave16v on 25th Mar, 2008.

will go to double grey dave

richi, orange plate will let go with the torque of the turbo motor

oh - yes - orange plate is not man enough for turbo torque...

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=10837

blimmin heck i thought orange were heavier than grey ? thats why i ran em bearing in mind i was using collway rally plus tyres (grippy as hell) and a LSD so there was a mega load on the drive. blimmin heck !!!

Steve when you machined the back plate did you make any shims to bring the towers back to the right height ? i had problems with clutches slipping when i put the wrong set of shims back in once ? just a thought.

______________________________________________________
TRADER HALL OF FAME
BENROSS...MINIMARK..WOLFIE (comic genius).....CARL....MARTPAUL.......AXEL
______________________________________________________
TRADERS OF SHAME
1 user....pm me 4 details

LEGENDS
MikeRace, Mini13

so : Clamp Load N (lbs) 3114 (700) 4893 (1100) 5560 (1250) for the orange, grey and double grey, so in other words I was wrong in my first post. Will delete that just to avoid confusion.

Edited by miniminor63 on 25th Mar, 2008.

you have a point there dave regarding the plate going weak over time?

To be honest its all a bit subjective. i give my car some beef and i've not had it slip yet. Not sure on the actual specs etc but its a fair amount of bananas and curly wurlys. There's an easy low 14/high 13 in there if not more to be honest, and my car probably weighs in at 700kgs.

Interesting subject. Answers a few questions I had on a previous post.

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=200138

I was running a non ap pressure plate, and it made a right mess of the flywheel & backplate. I'm running less power than most of you guys, just needs to be tough under race conditions, standing starts etc. So grey or double grey? Whatever was machined from flywheel faces etc, I machine off the lugs???

Another thing with my car, not sure if its relavent, but all it has done is very hard standing starts. Call it 2 a length of the strip, one for the burnout and one for the launch.

I have no slip in 3 or 4th, and the slip i get in 1st or 2nd is usually associated with the tyres not gripping

I thing i dont have however is an LSD which i can imagine putting a lot more load on the clutch.

what does the DON use? Its significant weight advantage has to be taken into mind, although if jim is getting clutch slip on the rollers, this is irrelavent

"and this measured 920lbs in the area where the actual clamping is concerned, and 1100lbs as the spring is pushed over-centre as the clutch is being opened."
Hi Dave, not sure to fully understand this, could you explain what's overcenter?

DON uses single grey and a paddle.

Steve if you are having problems I'd check the thickness of the friction plate first. If this is worn you will be losing clamping.

oups! refresh

Edited by fab on 25th Mar, 2008.

Yeah i use exactly the same as the don, and have more weight to carry off the line but less power.

ah,

but whats the touque on the Don?

Would that be good for me too? 825kgs.
Only parts left to buy. :)
What do miglias use as a matter of interest?

I think the weight of my car is the problem, on the rollers I don't get a problem, also on the strip I didn't have any issues. (that was with the car weight being 640kgs inc driver) around combe I had Endaf in the car he's about 80kgs so 720kgs total, I was getting slip then. This is with a sintered plate, double grey diaphram and the back plate lugs machined.

Team Racing