Clutch Spring Help

[Thumbdoctor]

I won/bought a Cudney clutch kit at the end of last season and didn't have an opportunity to evaluate it. This past fall I replaced my bushings and installed the kit. I had a concern with the primary spring length as it was almost twice as long as the OEM and the Goodwin I had installed before. I installed the spring anyway. The first start up this season I noticed a severe rattling coming from the PTO side of the engine most pronounced at 4000 rpm. I removed the primary and ran the motor without the clutch. Quiet as a two stroke is expected to be I the disassembled the primary. To my surprise the brand new spring had marks all over one side where the rollers were hitting it (the proof was that there was yellow paint on two of the rollers). There is also evidence of spring bind at the ends. Now don't get me wrong, I'm not on a witch hunt here, I'm only looking for information. I have a lot of respect for Bill and I think he is a great guy (really!!!). I need to know if anyone can identify this spring.

Colour: Yellow
Free Length: 191mm (7 1/2")
Wire Diameter 5.32mm (.209")

I'm not POd or any thing, I just want to get the facts before I call Bill to talk about it as I imagine he has better things to do than discuss older sleds.

Here are some photos. let me know if anyone has experienced the same thing with long primary springs. I also noticed some grating contact between the spring and inside hub of the spring retainer.

[attachmentid=17498][attachmentid=17499]

Thanks,

Simon

[rob7374]

Originally posted by Thumbdoctor@Dec 26 2004, 10:50 PM

I'm not POd or any thing, I just want to get the facts before I call Bill to talk about it as I imagine he has better things to do than discuss older sleds.

Thanks,

Simon

[snapback]380011[/snapback]

On the contrary. He is a great business man and stands behind his product. Phone him first.

[swish]

Originally posted by rob7374@Dec 27 2004, 12:28 AM
On the contrary. He is a great business man and stands behind his product. Phone him first.

[snapback]380062[/snapback]

i agree with thumbdoctor.
if this is on an older tra you can install a spring guard out of the newer sleds that will stop the friction between the clutch and the spring.
here is the doo part number 417222176

[Thumbdoctor]

Thanks Dave,

That spring guard is pretty much what I need. Now all I need to know is that spring's rate. I checked it with my scale but can't trust my findings as the spring has been compressed (maybe too much!) already.

best regards,

Simon

[doo900]

I WOULD'NT THINK THAT IS A PRIMARY SPRING KIND OF LONG, I THINK IT IS A SECONDARY FOR THE RER

[Rad Chad]

I know Erlandson Performance Industries makes a huge Yellow spring like that. Looks more like a suspension spring. The Rates are 240-320.

[skoal_mint]

i just bought that same yellow spring for my 2000 touring 500...does anyone if i will have the same problem with my clutch as thumbdoctor?