AP Racing Twin Plate Clutch Problems

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omsracer
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AP Racing Twin Plate Clutch Problems

Postby omsracer » Fri Mar 04, 2016 2:24 pm

I have just stripped my clutch down after a session on the rolling road identified a dragging issue. When trying to get the plates out the intermediate plate was pretty solidly wedged in which was obviously causing the clutch not to release. Not sure now what to do next or whether a new set of steel plates and clutch plates could solve the problem.

AP are quoting 3 weeks to look at the unit and a silly sum of money which might in the end make it easier to buy a complete new unit. Any help and guidance would be greatly appreciated as Oulton park seems to be slippy away day by day.

Please contact me on my mobile: 07710 571463.

Many thanks

Peter
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tristancliffe
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Re: AP Racing Twin Plate Clutch Problems

Postby tristancliffe » Fri Mar 04, 2016 4:52 pm

Distortion from heat is very common, although later units apparently got a bit better.

What you can do is prise the plates out (carefully!), and then file them so that they slide easily, with a few thou of clearance. You can do that several times too if necessary, but check them for flatness when you do it because if they are too warped they'll continue to drag when released, creating heat, creating distortion etc.

Mr Harrison (and others) have been seen with cars split in a garage between sessions frantically filing the plates!
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Re: AP Racing Twin Plate Clutch Problems

Postby Nick Harrison » Sat Mar 05, 2016 7:12 am

Indeed, someone has been riding the clutch.

omsracer
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Re: AP Racing Twin Plate Clutch Problems

Postby omsracer » Sat Mar 05, 2016 10:17 am

It was fine before I went to the rolling road, 'he said in his defence'.

Thanks both for your help.

Peter
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Re: AP Racing Twin Plate Clutch Problems

Postby tristancliffe » Sun Mar 06, 2016 12:09 pm

Nick Harrison wrote:Indeed, someone has been riding the clutch.

I'm sure neither of your drivers ever do that.
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Re: AP Racing Twin Plate Clutch Problems

Postby peter holst » Mon Mar 14, 2016 4:11 pm

sorry to use this post but I have got a problem with that kind of clutch too.

I need some new plates but I can´t find out wich to buy at Demon Tweeks

http://www.demon-tweeks.co.uk/motorspor ... rive-plate

I have to choose drive plate type and spline

can anybody help me....

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Re: AP Racing Twin Plate Clutch Problems

Postby tristancliffe » Mon Mar 14, 2016 5:07 pm

For the spline measure the diameter of the shaft and count the splines.
For the plate, you could look up the part number that'll be stamped on your one and compare to here https://www.apracing.com/drawings/2016% ... clutch.pdf. Also, I have my doubts that Demon Tweeks would be the cheapest place to buy (but you never know, stranger things have happened).
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Re: AP Racing Twin Plate Clutch Problems

Postby peter holst » Tue Mar 15, 2016 11:54 am

thanks - this is very helpfull :D


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