clutch basket. Has anyone tried this?? - Wrist Twisters
 
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post #1 of 12 Old 03-22-2011, 03:34 PM Thread Starter
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clutch basket. Has anyone tried this??

thoughts

Fixin the clutch

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post #2 of 12 Old 03-22-2011, 03:58 PM
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the 919 stock clutch and basket is pretty beef... unless u have MANY MANY hard miles on it notching shouldnt be bad at all.

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post #3 of 12 Old 03-22-2011, 04:13 PM
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I did it on a dirtbike many years ago.

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post #4 of 12 Old 03-22-2011, 04:18 PM Thread Starter
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I haven't taken my 919 clutch apart yet but my drz400 is pretty scored with about 4k miles.

From what I've seen on the net though, 919 clutch basket aluminum just like on DRZ. I will try this on my DRZ since I got it all apart and let you guys know.

I found a few pics of used ('04-'06) 919 baskets and they look pretty scored as well (unknown mileage)

here is on from '04. My DRZ is a little better but when you run clutch ring up and down you can feel those grooves pretty good


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post #5 of 12 Old 03-22-2011, 04:19 PM Thread Starter
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Quote:
Originally Posted by rmb View Post
I did it on a dirtbike many years ago.
how were your results, noticeable?

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post #6 of 12 Old 03-22-2011, 05:10 PM
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The reason the basket on DR got grooved so fast is because it's a single cylinder engine. The torsional vibration a single makes is really tough on engine drivetrain items. The 919 being a four cylinder, will take tens of thousands of miles to damage a basket anywhere near that bad.

Also, any extra "play" that grinding the basket will introduce, will only aggravate the problem. The play is the enemy and while grinding will provide smoother actuation for a while, it will get worse, faster.

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post #7 of 12 Old 03-22-2011, 05:38 PM
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Quote:
Originally Posted by zaq123 View Post
This looks like the kind of craft work that if done right would surely help.
Very easy to screw up though.
Very good comment about de-edging the engagement tangs on new plates.
Good find !

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post #8 of 12 Old 03-22-2011, 05:40 PM
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Quote:
Originally Posted by zaq123 View Post
how were your results, noticeable?
I wasn't much of a racer then either, lol, I was told it would it would smooth out the "grabiness"(sp) in the clutch, I think it worked...

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post #9 of 12 Old 03-23-2011, 02:56 PM Thread Starter
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post #10 of 12 Old 03-23-2011, 05:06 PM
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never liked the idea of a rekluse... i can see how it would be beneficial in some situations (tight TIGHT technical single track stuff on a dribike), but its SO much extra heat dumped into the motor, guys often have problems with overheating.

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post #11 of 12 Old 03-23-2011, 05:12 PM Thread Starter
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Quote:
Originally Posted by nd4spdbh View Post
never liked the idea of a rekluse... i can see how it would be beneficial in some situations (tight TIGHT technical single track stuff on a dribike), but its SO much extra heat dumped into the motor, guys often have problems with overheating.
I don't get the whole idea unless there your left hand is busy doing something else.
Just went across this ytube while looking at clutch baskets

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post #12 of 12 Old 03-23-2011, 05:18 PM
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Quote:
Originally Posted by zaq123 View Post
I don't get the whole idea unless there your left hand is busy doing something else.
Just went across this ytube while looking at clutch baskets
pretty much think the clutch system of like a honda 70 (altho with rekluse you dont disengage the clutch when shifting)

its just a centrifugal force clutch, the faster it spins the more pressure it applies to the clutch stack... at idle it doesn't apply any pressure.

problem is this type of clutch creates alot of slippage simply by nature... thus creating TONS of extra heat.

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