Maintenance & Technical > KX500 Original

KX-500 Autoclutch! It works!

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Kawadougie:
The EFM clutch pressure plate assembly is roughly 1/2" wider than the stock clutch basket cover.  Most modern dirt bikes today have a removeable cover which makes a spacer easy to manufacture.  
     The cool thing about this clutch is that you just turn the throttle and go.  I haven't tried it without the flywheel weight yet, but that might be interesting too. :shock:

KXcam22:
Kawadougie,
   Cool clutch!  What is it like on deceleration?  I raced an automatic 360 husky for a bit and it was odd going down hill since it would freewheel, with no engine braking. Took a bit to get used to.  Does this clutch do the same? Cam.

KXcam22:
Come to think of it this probably wouldn't be much of an issue.  I find I pull in the clutch as a habit whenever I use the rear brake so I don't stall (no steahly).  In practise that wouldn't be much different than the clutch disengaging at idle. Neat! Cam.

doordie:
Had to have this thing! :twisted:

Can you tuning what rpm for engage and disengage,(sorry about spelling)? :oops:
 
Maybe with heavier/lighter balls or spring preload?

I will send a email to EFM and ask if they can ship it to Europe/Sweden.

Do you guys know what price for a clutchbasket in US?

//doordie

Kawadougie:
This is much different than the old Auto Husky.  It acts just like a regular clutch until the RPM's drop off. then it disengages automatically.  You can adjust the speed of disengagement by adding or subtracting some small spring washers.  On downhills you still have engine braking but if you lock up the rear wheel, the auto clutch will save you from killing the motor.  It almost encourages you to ride in a higher gear, but if you climb a hill and the RPM is too low, the clutch will slip.  Just shift down or crank on the throttle to go faster.  It's a 70 HP woods scooter! :shock:

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