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550 F2 started!

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amx1992:
I made a hydraulic clutch for my 400, using the seal from a hope master cylinder (10mm ish), and machining a cylinder and piston out of some aluminium. Worked really well and the clutch was really light, too light for me really. I ended up swapping back to cable with a bearing in the pivot.

I've just mocked it up so you can see roughly how it looked

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Laverdaroo:
Haven't had a chnce to read any of this yet but going to...not ignoring you all, looks fascinated but hard at it and havent had a 30mins sot to have a proper digest..............

thanks all

K2-K6:
Nice work and overall concept am.

Yes you'd certainly get a potent ratio with that bore size, think you're right at 10mm or they may be 10.5mm. Probably from a mc like this one

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Same concept by pulling but using a piston and seal from a caliper at 15mm (still with mc shaft seal though) and perhaps a coil spring in blind end of cylinder to help return piston and avoid holding force against clutch could be a development step.

K2-K6:
Thinking that through  :) it's the other way round regarding ratio and slave bore size. Larger piston will give less travel and more power to accentuate how easy it is to operate.  Hope now make a smaller mc piston (9mm I think) in their 4 series brake system that may help, but with this of course adding to the bike's original ratios accumulated from the cam and cable lever effects built in .

You'll likely need the bigger sized piston if going straight to the clutch push rod as it will delete those leverage elements built in above.

Laverdaroo:
Right…………exciting and hurried unwrapping commences


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