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Enduro Suspension Tuning & maintenance of Enduro forks, shocks, etc |
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#1
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Marzocchi Shiver 45 fork springs
I have some springs here but I don't know the spring rate.
There are nice table in the Marzocchi manual. But how can can I differentiate between 4 springs with the same lenght 460 mm and the same wirediameter von 4,8 mm. may be someone know the numbers of coils thanks |
#2
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In my Shiver 45 is a spring with 4,8 mm wire and 470mm lenght and 30,5 coils.
Know someone which spring rate this is? |
#3
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Quote:
http://www.pontiacracing.net/js_coil_spring_rate.htm You will also need the outside diameter of the spring to complete the calculation. jeff webmaster GasGas Riders Club |
#4
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I have 100% for sure 4,0 springs and they got just same specs than your springs. Difference between 4,2 and 4,5 springs is number of the coils, but I can't remember how many coils they have (I didn't have 4,5 springs right now and 4,2 springs are in my forks)
4/4,4 and 4,2/4,6 spring rates in this table are interesting... I've been wondering that before. Both of the springs have own code. Maybe they are progressive springs? Anybody know...? |
#5
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Thanks for this specifications.
The outside diameter is appr. 40,5 for these springs I have also some with 4,8 mm wire and 457mm lenght and 27 coils. And suppose 4,5 N/mm. And someone offers me 4,2 N/mm they have 4,8 mm wire and 462mm lenght and 29 coils. or 4,8 mm wire and 470mm lenght and 30 coils. |
#6
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Springs and shims
I just ordered some 4.5 springs yesterday from marzocchi USA in California. They cost $34 each which seemed pretty reasonable. They did not have the 4.2/4.6 versions in stock (and the sales guy did not know for sure what they are) and they did not have any complete shim kits either. They do not seem to be very focused on motorcycle business - the sales guy told me that they make their money from the mountain bike market and the support for dirt bikes is limited.
Can anyone tell me where to find shims? (in the US).
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11 Husaberg 570 12 Husky 310 97 Gas Gas JTX 270 trials 10 Beta Evo 290 trials 02 E440 Cannondale plated |
#7
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Quote:
I used a dia grinder and a cone shaped stone bit to open the I.D. to fit. I think you'll be fine with the .45...that's what I'm using. Just for note I think Race Tech can match a .46 if you give them the spring dimentions. |
#8
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i have ordered shims for this place http://www.racingsuspensionproducts.com/shim/shim.html
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you don't have to live on the edge, just know where it is. ____________________ Ken 05 GasGas EC300 05 Honda CRF450X 98 Honda VFR800 89 Honda RC31 |
#9
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I used springs that fit 03 Suzuki RM250.
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Dont follow me, You wont make it. |
#10
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just another note:
if your going to revalve read the post by pobit http://www.gasgasrider.org/forum/sho...ighlight=pobit it a real headstart and making the rebound stiffer really help my forks. i also tried several different WT# fluids, settled on synthetic ATF set @ 120mm.
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you don't have to live on the edge, just know where it is. ____________________ Ken 05 GasGas EC300 05 Honda CRF450X 98 Honda VFR800 89 Honda RC31 |
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