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Author Topic: Thoughts on these steel cam chain rollers?  (Read 2804 times)

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Offline slikwilli420

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Thoughts on these steel cam chain rollers?
« on: September 19, 2016, 07:10:14 AM »
http://www.ebay.com/itm/231576401099?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

These look really trick and I am leaning toward a set for my AHRMA racer. Thoughts from the Hi-Po gurus?
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Offline teebee67

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Re: Thoughts on these steel cam chain rollers?
« Reply #1 on: September 19, 2016, 07:16:44 AM »
Not used them in my CB750 racer but once fitted them in my CB350K4 racer - next oil change I found minute shiny particles in the oil - looked like very fine steel shavings. Stripped engine and put originals back in, never ran them again.
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Offline 70CB750

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Re: Thoughts on these steel cam chain rollers?
« Reply #2 on: September 19, 2016, 07:39:28 AM »
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Offline Bill/BentON Racing

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Re: Thoughts on these steel cam chain rollers?
« Reply #3 on: September 19, 2016, 09:34:30 AM »
One like that's in my Cobra motor,  along woth H/D  Cryo  cam chain. Just ran 10 10 second passes with it, so far no metal particles etc. Jury still out, but I know kmb 69 and M Rieck using them or about to.....Bill
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Offline Medyo Bastos

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Re: Thoughts on these steel cam chain rollers?
« Reply #4 on: September 19, 2016, 09:47:49 AM »
'bout to as well


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Offline scottly

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Re: Thoughts on these steel cam chain rollers?
« Reply #5 on: September 20, 2016, 07:45:18 PM »
Quote from: teebee67 on September 19, 2016, 07:16:44 AM
Not used them in my CB750 racer but once fitted them in my CB350K4 racer - next oil change I found minute shiny particles in the oil - looked like very fine steel shavings. Stripped engine and put originals back in, never ran them again.
Did you find any evidence of wear on the smooth roller, or flat spots on the chain "rollers" where the chain contacted the steel roller?
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Offline turboguzzi

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Re: Thoughts on these steel cam chain rollers?
« Reply #6 on: September 20, 2016, 11:19:46 PM »
I think that riccardo solved his cam tensioner issues with a cappellini moto tensioner, pm him to be sure
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Offline teebee67

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Re: Thoughts on these steel cam chain rollers?
« Reply #7 on: September 21, 2016, 12:27:45 AM »
Quote from: scottly on September 20, 2016, 07:45:18 PM
Quote from: teebee67 on September 19, 2016, 07:16:44 AM
Not used them in my CB750 racer but once fitted them in my CB350K4 racer - next oil change I found minute shiny particles in the oil - looked like very fine steel shavings. Stripped engine and put originals back in, never ran them again.
Did you find any evidence of wear on the smooth roller, or flat spots on the chain "rollers" where the chain contacted the steel roller?

They were only fitted for one meeting but the smooth roller did show very slight signs of abrasion. Didn't check the cam chain, just binned it as a precaution. Never saw any signs of particles again. Have to say I raced 350K4's for the best part of 20 years without any problems with cam chain tensioners, they just need setting up and maintaining properly. In the UK lots of people using alternative tensioners (Kawasaki and Suzuki) but I go with "if it ain't broke don't mend it".  Haven't raced the CB750 long enough to form a definate opinion on the standard tensioners but see no reason why they should be any different to the 350K4 ones.
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Offline livefast_dieold

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Re: Thoughts on these steel cam chain rollers?
« Reply #8 on: September 21, 2016, 05:17:09 AM »
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