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Enduro Suspension Tuning & maintenance of Enduro forks, shocks, etc


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  #131  
Old 01-29-2020, 05:58 PM
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(F5) (F5) is offline
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Not for you ma boyo. Upper and lower and axle. My 07 change over should cover you. Can't remember if did as my own thread or think hijacked someone else's


Edit, erm heck I've forgotten the difference sizes, brain has gone soft. . .

The 450 conversion complete with YZ front wheel and brake was pretty seamless. Just the spring and valving are not ideal, rides quite high and stutters on bumps. Easily fixed if he would spend some money.


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  #132  
Old 01-30-2020, 01:27 PM
swazi_matt swazi_matt is offline
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I don't think so. I used a yz axle on my conversion and considering it stuck out about 30mm i suspect the yz tripples are wider than the gg ones (also not sure about the offset being the same)

I used the GG botom clamp and bought another gg top clamp and had it machined to the yz fork diameter. Then also used yz axle and specially made up spacers. Have a sketch of it somewhere
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  #133  
Old 03-14-2020, 06:16 PM
Hooligan Hooligan is offline
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I haven't bolted anything together yet but comparing the GasGas triples to the YZ triples, the fork spacing looks to be very close. Maybe the YZ spacing is a bit wider but we are talking maybe 1/4" at most. No way is the difference more than an inch .... at least not with the parts I have.
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  #134  
Old 03-26-2020, 03:22 PM
5valve 5valve is offline
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Sourced SSS forks off a yz250f '09 with 105mm (22N/mm) ICS / free float piston spring.
Spring in at least one fork is broken at first bend from top. Haven't yet checked the other.

Standard spring for 2018 EC 300 is 20 N/mm @ 90mm long.
Wire thickenss on my spring is 3.8mm.

If spring wire thickness for 2018 EC 300 is also 3.8mm, then cutting and flat surfacing my springs to 90mm would also result in approx 20 N/mm force, so there would be no need to purchase a pair of 90mm's. Also quite pricey at 50eur/pc.
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  #135  
Old 03-27-2020, 01:13 AM
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Skim read, but if you heat that top coil and squeeze it you can then surface it better. Must be straight and take the space up with spacer.
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  #136  
Old 03-29-2020, 02:50 PM
5valve 5valve is offline
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That went easy, 90mm right there.

Used online calculator for spring rate, and stock 105mm, rated at 22N was actually 21N/mm.
Now that I cut it, it became 23.6N/mm.

Read somewhere on TT, that difference from using lightest 15N ICS spring or heavyest 28N spring results in difference of .01 to .02 in main spring rate, so having a .42, it becomes .43 - .44 of overall rate.
Considering this difference, since current springs in forks are .043, putting .42 inside should compensate.
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Last edited by 5valve; 03-30-2020 at 11:50 AM.
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