Ohlins 3-3 Nylon Set Screw
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Tourer
Joined: Jun 2008
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From: Livermore, CA
Ohlins 3-3 Nylon Set Screw
I'm going to be calling Howard on Monday but I thought I'd ask you all in the meantime.
I'm still in the process of fine tuning the 3-3's to get it close to perfect as possible. Accordingly, I've always been curious if that nylon set screw really does do anything. I can't imagine that it's going to prevent any movement of that collar but what the heck do I know!
Any thoughts on what, if any, this set screw serves a purpose for?
Thanks!
I'm still in the process of fine tuning the 3-3's to get it close to perfect as possible. Accordingly, I've always been curious if that nylon set screw really does do anything. I can't imagine that it's going to prevent any movement of that collar but what the heck do I know!
Any thoughts on what, if any, this set screw serves a purpose for?
Thanks!
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Joined: Apr 2007
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From: Davie, FL
Why Wait?
When a spring collapses the ends turn as does it when the spring expands. When the springs turn they only loosen the spring pre-load nut and do not tighten it. Many shock companies only use one nut (excluding the "ramp system") so this may happen as it does on my own bike. Tightening the set screw prohibits movement as does a pair of nuts where the second nut acts as a check nut. That is what the set screw does.
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Joined: Sep 2007
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From: Near Myrtle Beach, SC
Nylon is capable of staying put while absorbing more vibration without causing damage to the finely threaded barrel of the shock than a metal lock-screw. It's not as strong as metal, but in this application when you understand the rotational flex of that spring pushing against the adjuster nut with forces perpendicular to the barrel threads, the nylon brake on the threads is all that is needed to hold it in place.
In racing, weight is everything. Ohlin's has always utilized such materials that are not only perfectly functional, but also extremely light.
I confess that I had the same concerns so I marked my #6's with a couple of dots of liquid paper and have checked them for over 2 years to try to see if there is any movement of the adjuster nut. Notta.
In racing, weight is everything. Ohlin's has always utilized such materials that are not only perfectly functional, but also extremely light.
I confess that I had the same concerns so I marked my #6's with a couple of dots of liquid paper and have checked them for over 2 years to try to see if there is any movement of the adjuster nut. Notta.
Last edited by Lowcountry Joe; Jul 7, 2013 at 07:11 AM.
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Tourer
Joined: Jun 2008
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From: Livermore, CA
Thanks Howard and LowCountry for your explanations, they make perfect sense! I didn't realize that the compression and expansion of the spring will cause the collar to move if not for the nylon set screw, especially so for the expansion stroke.
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