Clutch spring center -failed again....

comnoz · Oct 28, 2016

[video]https://www.youtube.com/watch?v=jyEVr400GeI[/video]

toppy · Oct 29, 2016

Not more reliability issues. :roll:

Madnorton · Oct 29, 2016

Check the very edge of the clutch spring plate - does it show any rubs mark at 180 degress to each other. As the plate flexes it may be experience contact on these edges and thus get getting an un-even operation.

Danno · Oct 29, 2016

100,000 miles is pretty good service from a minimally lubricated moving part. I guess it gets a little splash from the primary with the stock triplex chain, but do you give it an occasional smear of grease or anything with a belt?

comnoz · Oct 29, 2016

Danno said:
100,000 miles is pretty good service from a minimally lubricated moving part. I guess it gets a little splash from the primary with the stock triplex chain, but do you give it an occasional smear of grease or anything with a belt?

No doubt, I can't complain about 100,000 miles. The first spring spent about half it's life with a chain primary before I converted to belt and it lasted about the same mileage.
Both failed about the same. They stayed tight until the last few thousand miles and then they failed fast. I guess that is about the time the spring steel wore through the case hardening on the center.

CanukNortonNut · Oct 29, 2016

Jim,
I would say you got your moneys worth on that clutch center. I can't even imagine how many cycles it took during that 1000000 miles.
Cheers,
Thomas
CNN

jaydee75 · Oct 29, 2016

Too many zeros.

comnoz · Oct 29, 2016

jaydee75 said:
Too many zeros.

Another 80 years and I could get there.....

baldy · Oct 29, 2016

Jim,

I noticed the design of the clutch spring changed when I got a new one from AN. The spring diaphragm fingers are all in line now instead of offsetting. Something to think about.

comnoz · Oct 29, 2016

baldy said:
Jim,

I noticed the design of the clutch spring changed when I got a new one from AN. The spring diaphragm fingers are all in line now instead of offsetting. Something to think about.

When the clutch spring fingers are all in line then you will get a cleaner clutch release with less clutch drag.

The trade-off is the engagement point becomes very narrow and if you are running aggressive clutch plates and/or a dry clutch with a belt drive then the clutch becomes an off-on switch.

I have used a center with the fingers aligned. I prefer the staggered fingers. The hydraulic clutch supplies slightly more travel than a cable clutch so getting a clean release is not an issue. jim

I probably should add. the spring I used with the aligned fingers was a center of my own build used with a old stock spring.
There is a possibility that the new spring has some other changes that could help with the on-off tendency I experienced.

Fullauto · Oct 29, 2016

Well, Jim, you do insist on using all those crusty home made parts and not GENUINE Norton parts from a reputable dealer!

pete.v · Oct 29, 2016

Hey Jim, you wouldn't have any videos of you getting going with no clutch would you?

comnoz · Oct 29, 2016

pete.v said:
Hey Jim, you wouldn't have any videos of you getting going with no clutch would you?

No, that was a long time ago. The key was never stop. My wife was on the back....

pete.v · Oct 29, 2016

comnoz said:
pete.v said:

Hey Jim, you wouldn't have any videos of you getting going with no clutch would you?

Click to expand...

No, that was a long time ago. The key was never stop. My wife was on the back....

Ok, so you are pushing this bike as hard as you can and your wife is on the back and THEN you fly over the top of her and on down the hopefully endless trail. Unless you have hills abound you may get away with this dilemma but I believe it's kinda flat in Pueblo.

Sorry to press this but I have this situation comedy going on in my head that I can't seem to get rid of.

CanukNortonNut · Oct 29, 2016

comnoz said:
jaydee75 said:

Too many zeros.

Click to expand...

Another 80 years and I could get there.....

Oops! my bad. Too many zeros = too many thumbs.

Jim you would have to be pulling a 45 ft trailer behind you to get that mileage. LOL
T
CNN

CanukNortonNut · Oct 29, 2016

comnoz said:
pete.v said:

Hey Jim, you wouldn't have any videos of you getting going with no clutch would you?

Click to expand...

No, that was a long time ago. The key was never stop. My wife was on the back....

LOL was she jabbing you in the ribs now and again during that event. :mrgreen:
Cheers,
Thomas
CNN

comnoz · Oct 29, 2016

CanukNortonNut said:
comnoz said:

pete.v said:

Hey Jim, you wouldn't have any videos of you getting going with no clutch would you?

Click to expand...

No, that was a long time ago. The key was never stop. My wife was on the back....

Click to expand...

LOL was she jabbing you in the ribs now and again during that event. :mrgreen:
Cheers,
Thomas
CNN

Oh, you don't know the worst of it. We went down once too - in the mud. :roll:

CanukNortonNut · Oct 29, 2016

I bet she was not a happy camper about that.

comnoz · Oct 29, 2016

CanukNortonNut said:
I bet she was not a happy camper about that.

Well we were 900 miles from home, no clutch, in the rain. My buddy who was riding with us on my wife's BMW went down too and broke the windshield and the brake lever. We had to go get a motel room to get cleaned up.
It was an un-forgettable trip....

ashman · Oct 29, 2016

pete.v said:
Hey Jim, you wouldn't have any videos of you getting going with no clutch would you?

When I did have problems with broken clutch cables I always got home riding it, from a stop I have the gear in netural, give it a slight push then wak in into first it goes in easy when the wheels are moving but you got to have the revs up a bit so u don't snuff it, once going you just change gears normaly and when coming to lights etc I just slip in in netural again and start all over again, but its been over 35 year now since I have broken a clutch cable.

Ashley

Clutch spring center -failed again....

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