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Shock springs - can...
 

[Closed] Shock springs - can I use a spring supplier?

 igm
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[#5077976]

If I can get the right size and weight is there any reason I shouldn't use a general spring supplier for a replacement shock spring?


 
Posted : 18/04/2013 7:46 am
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Well, you said it.

"If you get the right size and spring weight"

But given CRC stock loads of them anyway you may find there is no point in looking elsewhere. Plus, dont forget you will need to set the sag by sitting on the bike with the spring. So unless your very lucky, you will need to buy a few rates to try out first. With CRC you can send back the ones that are wrong.


 
Posted : 18/04/2013 8:32 am
 igm
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It's for a child's full suss bike with a Vanilla R 165x38 rear shock.
He's verylight so I've played with the TFTuned and Mojo spring calculators and I need a 150-200lb spring, around 4" uncompressed with at least 1.5" compression.
Not too many at CRC or other bike shops really - I might be able to get a 200lb, but I may end up buying an air shock.


 
Posted : 18/04/2013 11:04 am
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You could get one custom made but it'd be expensive.


 
Posted : 18/04/2013 11:07 am
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If I can get the right size and weight is there any reason I shouldn't use a general spring supplier for a replacement shock spring?

I looked into this for vehicle use, and what I found was lots of very dissatisfied customers. Apparently making a spring that has the correct free length, compressed length, and spring rate isn't as easy as you'd think.


 
Posted : 18/04/2013 11:10 am
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Air shock would be a better idea.


 
Posted : 18/04/2013 11:11 am
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Also if you look at TF Tunes spring calculator and Cane Creeks and Mojos they are all different.

Some take into account leverage ratios, others dont. So they are really only a very rough guide.

Air shock may be better.


 
Posted : 18/04/2013 11:21 am
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Call TF and see what they have?

From previous experience they will tell you if they do/can/possible.

Then get an air shock


 
Posted : 18/04/2013 11:28 am
 LoCo
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Cheap air shock is a better option, custom spring is going to be fairly pricey.


 
Posted : 18/04/2013 11:38 am
 igm
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And the air shock will be lighter too - important when you're small.

Sold.

Thanks all.

Now has anyone got a 165x38 Float they don't need?


 
Posted : 18/04/2013 12:22 pm