My question what are the advantages of taking out thes shims that are under the front primary sping. I have heard people doing this when installing new primaries. I hve just installted the EPI Maroon spring and it seems a little snapier. Downshifing and EBC seem the same but not real sure. But I was wondering if taking these out would help or what do they do. How many are there in there. I have a 05 P700. Any info on this would truely appreriate it.
wvprairie
I think most have 1 shim under the primary spring. Removing it you would have slightly less stall and a little less shiftout pressure. So you would see a little decrease in engine RPM at any given speed. Each shim is worth approx 100 rpm of stall. It is a small but noticable difference. Try it and see what you like, everone is different. There is no "perfect" combo. Its all a trade off somewhere. Go with whatever works for you.
From what I understand, the 02 and early 03 P650's came stock with no shims under the primary spring (at normal altitude) and the late 03 P650s and all P700s came stock with 1 shim (at normal altitude). I think you can add 1 shim to all of the above for the high altitude kit.
Like you, I too just installed an EPI maroon spring and I like it so far. I put no shims on this spring.
In a nutshell, each shim adds about 100 rpm before initial engagment and you can generally add as many as 3 shims if you want a slightly higher engagement. Personally, I like a no stall spring and don't have any plans to add any shims to the EPI Maroon spring. Before this spring, I had the stock P700 spring with 2 shims and before that I had the stock P650 spring with only 1 shim. I could tell the difference in engagement with 2 shims vs. 1 shim, but it was very slight and not really noticeable unless you own and ride the quad often.
Happy trails...
Like you, I too just installed an EPI maroon spring and I like it so far. I put no shims on this spring.
In a nutshell, each shim adds about 100 rpm before initial engagment and you can generally add as many as 3 shims if you want a slightly higher engagement. Personally, I like a no stall spring and don't have any plans to add any shims to the EPI Maroon spring. Before this spring, I had the stock P700 spring with 2 shims and before that I had the stock P650 spring with only 1 shim. I could tell the difference in engagement with 2 shims vs. 1 shim, but it was very slight and not really noticeable unless you own and ride the quad often.
Happy trails...
Mike and speed thanks for the very quick response. I cant really tell a difference with then just the one shim. I might right it some more and see if I like it even more but if not I will take the shim out and try again. I like the very little stall of the spring to help get out of the hole quicker. but once again thank you all for the very quick and informative feedback.
Thanks
Thanks
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