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Fullcircle
Posted on Saturday, April 25, 2009 - 05:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Snow finally melts enough to go for a ride and see how the new tires are. Go out to the bike and find the right fork dripping oil. Now it time for new seals. As far as I can find the recomended oil from Harley is about a 10 weight. Has anyone tried upping to a 15w? I even saw one seal manufacturer recomend 20w but would'nt that be to thick?
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Glitch
Posted on Saturday, April 25, 2009 - 06:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I use the "H-D Heavy Duty Fork Oil"
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Posted on Saturday, April 25, 2009 - 07:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

After lots of digging around this is what I found.

Harley E fork oil= 10 weight
SE heavy duty is = 15 weight
SE extra heavy duty is 20 weight

Looks like I will give the 15w a try.
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Iamarchangel
Posted on Saturday, April 25, 2009 - 08:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Changing fork oil viscosity means changing all the little holes in the damping and compression as well. Is that what you mean to do?

Unless you've used the full range of adjustments in the fork settings, you should probably just stay with the stock oil.
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Posted on Sunday, April 26, 2009 - 10:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I am after a little more dampning from the front. Slightly heavier oil usually gives me what I am looking for. I was'nt going to worry about it but it's apart now.
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Firebolteric_ma
Posted on Sunday, April 26, 2009 - 01:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

You should use the adjuster to get that then, Not change the oil.

You may add Damping by doing that, but you also slow down the rebound in the process.
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Posted on Sunday, April 26, 2009 - 02:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I was running with the compression at 1/4 turn out already, rebound was at 3/4. If I change from the stock 10w to 15w I will have enough rebound adjustment and should be able to get the compression I am looking for.
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