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Old Yesterday, 07:54 PM   #1
Buster452 OP
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Spring rubbers to increase spring rate?

So, racers use spring rubbers to change the spring rates of their springs for race-day adjustements to their suspension.

http://www.steelerubber.com/2-5-inch...-spring-rubber

Could the same be done with our rear shocks to increase spring rate without having to rebuild or buy a new shock?

In particular, I'm on a super tenere and looking for a way to increase spring rate until I save my pennies to get a new shock.

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Old Yesterday, 08:28 PM   #2
jeiff
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Unless it is actually threaded on between coils and begins to bind a couple, it seems like it would just raise the ride height. But it looks like it would just stack on top of the spring. That wouldn't change the spring rate.
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Old Yesterday, 09:22 PM   #3
broncobowsher
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It can work. Just takes a coil and jams it nearly solid. Spring rate goes up by 1/(the number of coils in the spring)-(what little give there is in the rubber).
Those spacers work on a specific spring coil spacing. Do you have that spacing? If so they will work. If not the results will vary even more. More gap? That could lead the spring into acting as a 2-stage variable rate when the coil hits the rubber. Less spacing? Now it is a solid lift spacer.

So is it the perfect fix? Probably not. Will it make changes, I am sure it will. Will it even fit? Diameter looks right but have no idea if it will stay in place as you ride. Will it damage anything? Probably not but it could.

Try if you like, be prepared to call defeat if they fail. But maybe they will do you good.
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Old Today, 07:43 AM   #4
74C5
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You can do that. However, you are talking about spring rate versus damping and, they are totally different....if that is what you mean by the shock rebuild. If you need a shock rebuild, you may very well make your problem worse.
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Old Today, 08:17 AM   #5
wsmc831
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You don't have to rebuild your shock to swap out the spring for the proper rate.
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Old Today, 09:02 AM   #6
dwayne
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A racetech spring looks to be about $120.00 USD, and then you have done it right.

Note, I don't have an opinion about racetech one way or another about racetech, it was easy to look up.

http://racetech.com/ProductSearch/2/...%20Tenere/2012
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Old Today, 12:00 PM   #7
Buster452 OP
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Ok, a full rebuild isn't necessary , but taking the shock apart is. That seems a bit more complex than what you want to do under a shade tree. I picture tools I don't have a spring turned projectile.

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Old Today, 12:43 PM   #8
gmiguy
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Autozone et al will rent spring compressors for free.

Spring rubbers are a legitimate way to make temporary changes for test and tune sessions, different applications, or running with/without a passenger.

I wouldn't use them as a permanent solution on a bike, especially with the comparatively low cost of made to spec springs.
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Old Today, 01:00 PM   #9
troidus
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Quote:
Originally Posted by jeiff View Post
Unless it is actually threaded on between coils and begins to bind a couple, it seems like it would just raise the ride height. But it looks like it would just stack on top of the spring. That wouldn't change the spring rate.
That's what it looks like to me, too.

I've used spring rubbers on a car, and they worked fine for the application. I used some zip ties to keep them from bouncing out, since I was going to be towing a heavy trailer on a multi-hundred-mile trip.
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