Biggles 65 Posted November 27, 2014 Does anyone have a figure for the release load of a standard 1.6 GTI clutch ? Share this post Link to post Share on other sites
welshpug 1,737 Posted November 27, 2014 as in clamping force? Share this post Link to post Share on other sites
Biggles 65 Posted November 27, 2014 No, as in the force applied (through the release bearing) to actuate the clutch cover assembly. Share this post Link to post Share on other sites
Biggles 65 Posted November 28, 2014 (edited) By word of an explanation - I'm curious as to how much heavier to operate a race clutch is supposed to be compared to a standard one (for similar torque capacities obviously). Edited November 28, 2014 by Biggles Share this post Link to post Share on other sites
allanallen 528 2 Cars Posted November 28, 2014 Have you got figures for a 1.6gti 'race clutch' to compare with then? I doubt anyone has any figures to be honest. What sort of clutch are you looking at? Single or multi plate? Share this post Link to post Share on other sites
Biggles 65 Posted November 28, 2014 AP Racing publish the figures on their website for single, twin & triple plate. I also have the figure for a single plate Helix. So plenty of race data. Just need some standard numbers for comparison so thought I'd ask. Share this post Link to post Share on other sites
allanallen 528 2 Cars Posted November 29, 2014 I think your best bet will be to stack weight on your clutch cover until it moves then, shouldn't be difficult to do. I was under the impression you wanted the force applied through the pedal rather than directly on the cover, apologies. I can say that my Ap 4 paddle clutch kit with Ap uprated cover wasn't noticeably heavier than the Luk unit I had in previously. Share this post Link to post Share on other sites
Biggles 65 Posted November 29, 2014 An uprated standard type cover I presume ... I have an idea for measuring it slightly more scientifically than that as the force involved is probably more than you think. Watch this space ... Share this post Link to post Share on other sites
Biggles 65 Posted November 29, 2014 Well that idea worked really well . The standard 200mm clutch that came out of the car after 62/3 rallies has a release force of exactly 300lbs (=136kg) For comparison, both AP Racing and Helix single plate 71/4" race clutches have release forces around 250kg. Share this post Link to post Share on other sites
Biggles 65 Posted November 29, 2014 Forgot to add - all these figures are for a 150lbft rated clutch. Share this post Link to post Share on other sites
allanallen 528 2 Cars Posted November 30, 2014 Top man, bit of ingenuity and you've answered it yourself I wonder how much extra pressure that actually equates to at the pedal, some calculations required...... Mine was a standard type uprated cover yes. Share this post Link to post Share on other sites
Biggles 65 Posted November 30, 2014 Now I've got the method, the interesting one will be when I measure the 71/4" race clutch that's in the car (from a different manufacturer from the ones mentioned) as it sure as 'ell feels a lot more than twice as heavy and that's with an extended clutch arm ! Share this post Link to post Share on other sites
