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Enduro Suspension Tuning & maintenance of Enduro forks, shocks, etc |
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#1
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Oops, I meant 44 on the forks, not 54. I'm 205 without gear.
Jeez, might as well put 2x4's in with 54 springs. lol
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04 Montesa 315R, 07 EC300, 21 KTM Erzberg 300, 21 Sherco 300 SEF-F, 23 KTM 690, 23 Rieju Mr Pro 300 |
#2
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LOL! Glad that's straightened out.
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WildAzzRacing YouTube channel Trail Riders of Southern AZ club AZ State Parks OHV Ambassador '11 EC250R '98 KDX220 |
#3
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I am using .44 springs in the Kayabas on my 2018. I am approximately 185lbs with no gear. If you are a fast rider you may benefit from .46 springs.
I would buy the .46 springs and then you have the option of running one stock .42 and one .46 to achieve the .44 spring rate, or use both .46 springs. Gives you options. |
#4
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I am using a .54 spring on the shock, just for reference. Sag is good, bike handles well.
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#5
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No worries there, and at 205# w/o gear you're probably more like 230# with gear. So you are a "step up" from Jacob and I. That would indicate .47 Kg on the forks and 5.7 Kg on the shock, if you go by the GG manual (which seems consistent from what I've read).
But you will find available springs (in Kg) to be either .46 or .48 for the forks; shock will be 5.6 or 5.8. So (being no expert) I would suggest .46 for the forks and 5.6 for the shock. But those could be one step too light! (Google "kyb spring rate for 230# rider"). You might want to consult a tuner. For a source - Cannon Racecraft (Oklahoma City). They are high quality and can get you whatever you need. Ask for springs for a YZ250. Jeff PS - The stock GG fork springs are 454mm long (you don't want 470s). The stock GG shock spring is 260mm long (you can order the YZ spring at 270mm, which is what they have in stock and it fits just fine).
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'18 GG XC 300 '05 GG DE 300 '01 GG txt 321 Last edited by farmerj; 05-16-2023 at 11:26 PM. |
#6
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And at the risk of getting "too far into it", I really like this post on how to select the right shock spring.
http://www.gasgasrider.org/forum/sho...hlight=preload The idea is that you only want 8-9mm of preload on the spring. If I understand it right, when you add a bunch of preload to get the correct sag, you are also creating a stiffer situation in the initial part of the stroke with no benefit overall. If the sag isn't right, get a different spring (vs. cranking up the preload). ----------------- From the post: "The main thing is the preload and the beginning of shock/wheel travel, how easy it is for the wheel to respond to small hits, and how fast the wheel is rebounding from those hits. This has the most effect on how the bike sucks up trail trash. If your spring is too light steering may suffer, and jacking the preload to correct it is the whole point of this thread. Keep in mind that the basic shock valving must be sound for your spring/weight/speed/terrain so you don't attempt to over compensate somewhere else. I'm running.44/5.4 combo and I'm 190 lbs. 1mm preload on the fork springs, around 9-9.5mm on the shock... Another thing. Don't soften up the fork in an attempt to get rid of the harsh mid spike in certain conditions. This will pitch the bike foward and make the shock feel worse. Solve the real problem (rebound) discussed in the other thread, and things will start falling into place nicely." "But, what we are discussing here is primarily how less preload provides a more comfortable ride. A bit more static sag will always provide a plusher ride in the initial part of the stroke than a spring that has been screwed down to be stiffer." "The whole thing is a bit of a catch 22. The right spring will give you the right figures. You may be borderline where you can either run with more preload, or go up a rate and run less. In this case I'd go for less preload and a heavier spring."
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'18 GG XC 300 '05 GG DE 300 '01 GG txt 321 |
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