I was lucky enough to do the initial testing on the prototype 77 Super Clutch. I was very happy with the quality of the clutch as well its out of the box performance. At the time it was the only one and I did not want to do too many mods during the testing period, since there was no backup if I messed it up.
Well now they are for sale and you can finally get your hands on one!
I finally started doing a bit more tweaking on it see how it can be improved. The out of the box tuning is rather aggressive. I like it, but there may be people that want it a bit detuned. The reason it is so aggressive is because the bolts that come with the clutch preload the springs 1.8mm when using the stock washer that comes with it.
There are two solutions for this, shorten the spring or increase the bolt length. Personally I am not a fan of button head allens, they look nice but the button head cannot hold up to the torque specs of the bolt which is why they strip faster then a common allen.
My solution for this was to make a longer allen. Since 28mm 6m x 1.0 allens are unheard of, I just cut down some 30mms. Also cut some slits to direct the flow of fluid, whether the slits made a difference is hard to tell, but this went straight to the track and had zero heat fade. Yeah, didn’t really match the lines… don’t matter.
It is really important to make sure the bolts are exactly the same length, otherwise the preload will different between them. Now with the longer bolts you can setup the preload exactly how you like it by stacking washers, or getting a tighter spring.
Next up I am going to play with different springs and adding some weight to the shoes to see if I can get it to take off like my KTM clutch.
You can see Ryan’s Polini with the Superclutch launch pretty good at the track. Enough to take the first corner.