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| Fork oil weight http://kawi2strokes.com/forum/viewtopic.php?f=14&t=13160 |
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| Author: | DGA [ Sat Nov 11, 2017 11:17 am ] |
| Post subject: | Fork oil weight |
I didn't rebuild the forks on my H2B when I did the rest of the bike. I bought new seals then realized the fork legs had rust pits etc and decided to wait and buy new fork legs (stanchions) later in the year. Am also considering buying valve emulators for them, not sure what part number it was they use. So, the question, I filled them with 10wt fork oil to get it riding earlier this year, but they are too soft, damping wise, spring as well actually but I will add a preload spacer to help that. What is the common oil weight guys use in these stock forks? |
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| Author: | Tim Steele [ Sat Nov 11, 2017 11:51 am ] |
| Post subject: | Re: Fork oil weight |
I am probably the exception but I use ATF in mine with good results. If it is too soft add an extra ounce of oil... |
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| Author: | DGA [ Sat Nov 11, 2017 12:34 pm ] |
| Post subject: | Re: Fork oil weight |
I think ATF is 3wt or 5 wt, but it does not have the good anti foaming properties that fork oil does. |
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| Author: | Tim Steele [ Sat Nov 11, 2017 3:27 pm ] |
| Post subject: | Re: Fork oil weight |
My research at the time I did it indicated 10W for ATF. I have been using it in my bikes for years and it works well for me. |
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| Author: | Ja-Moo [ Sat Nov 11, 2017 3:32 pm ] |
| Post subject: | Re: Fork oil weight |
Stock forks have no compression damping, so thicker oil iny slows rebound. Adding oil will help compression with a smaller air space. Isually you need springs for your weight. The emilators are a good mod i hear. |
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| Author: | DGA [ Sat Nov 11, 2017 10:03 pm ] |
| Post subject: | Re: Fork oil weight |
Ja-Moo wrote: Stock forks have no compression damping, so thicker oil iny slows rebound. Adding oil will help compression with a smaller air space. Isually you need springs for your weight. The emilators are a good mod i hear. That sounds about right, they dive something terrible with the twin ninja 650 caliper brake setup, some of that is soft springing, but they shouldn't dive that quickly either. Rebound is a bit better. So maybe I should just buy the emulators, I saw on here awhile ago which ones they were but can't find that info now. |
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| Author: | Ja-Moo [ Sun Nov 12, 2017 3:23 am ] |
| Post subject: | Re: Fork oil weight |
do a search on emulators, and I think JRD here does the modification, he would know where to get them. |
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| Author: | ALTERED IMAGE [ Sun Nov 12, 2017 6:54 am ] |
| Post subject: | Re: Fork oil weight |
I did this for my emulators from Mike XS |
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| Author: | mraxl [ Sun Nov 12, 2017 7:19 am ] |
| Post subject: | Re: Fork oil weight |
http://kawatriple.com/tips/forkmods.htm |
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| Author: | H2RTuner [ Sun Nov 12, 2017 1:25 pm ] |
| Post subject: | Re: Fork oil weight |
Please remember that when our bikes were first built, there was literally NO specialty fork oils that were worth a darned, and, mostly, no dedicated fork oils in general. What we did use was good old common SAE viscosity engine oils, and, for these old pogo sticks we referred to as "forks", it worked fair to middlin, because we didn't know any better. Not much different today for those stock units. I still use 20W, 30W, 40W straight weight motor oils in our front forks, and for what they still AREN'T, it still works.....fair to middlin'ly dismal. |
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