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Old 02-11-2010, 09:26 AM
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Default Primary Spring Question
I am currently running a Yellow/White in my primary and I am down 300-400 RPM's. My question is will a stiffer spring say a 140-340 versus the 122-285 (yellow white) give me the RPM's I am looking for?
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Old 02-11-2010, 11:16 AM
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Drop the primary weight by a couple grams this will help. Also what elevation are you riding at? I dropped from 68 to 66.5 custom grinding job and picked up about 250 rpm. If you are at 68 you could probably go to 65grams.
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Old 02-11-2010, 11:17 AM
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What kinda sled?? M?? I researched & went with the most popular combo. It works great. Gold primary, Orange secondary with a D&D shift assist. Engages at 3200 rpm & backshift is fantastic.
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Old 02-11-2010, 11:32 AM
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I have an 08M1K with quite a few mods. I am currently running 80 grams with the yellow/white in the primary. The secondary has an RKT tortional conversion with 38 degree helix and the snopro green spring. I found some 77 gram weights that I am going to try this weekend and see if they give me the rpm's I am looking for.
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Old 02-11-2010, 01:42 PM
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Dropping the weight is the first thing in my opinion
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Old 02-11-2010, 07:40 PM
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Just droped the weights on my m7 and it worked great. I heard of other peeps doing it with fantastic results as i had. Even the '10 M8's are dropping grams. Good luck.
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Old 02-11-2010, 08:11 PM
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the other option is to add a stiffer primary spring with a higher finish rate.
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Old 02-12-2010, 09:49 AM
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When changing springs make sure you are comparing apples to apples, not all springs are rated in the same way. I just received a bunch of springs from SLP to try. I really like the blue/pink, which is the one they were suggesting I try first. The Yellow/White AC spring just did not work on the top end for my sled, but felt great down low.

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Old 02-13-2010, 01:37 AM
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Quote:
Originally Posted by Ausm7499 View Post
I am currently running a Yellow/White in my primary and I am down 300-400 RPM's. My question is will a stiffer spring say a 140-340 versus the 122-285 (yellow white) give me the RPM's I am looking for?
Quote:
Originally Posted by 76FoMoCo View Post
the other option is to add a stiffer primary spring with a higher finish rate.

Gee, not sure if anyone would have thought of that...?
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Old 02-13-2010, 04:00 PM
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I have heard the Speedwerx White/Red spring is good - very high finish rate though - something like 340?
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