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› Front suspension bottoming out.
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Front suspension bottoming out. (Read 486 times)
arteacher
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Front suspension bottoming out.
05/02/12 at 10:22:45
I had to do a couple of quick stops today and the front suspension bottomed out. I can think of three remedies:
Thicker oil- I have 10 wt in them now.
More oil.
Stronger springs.
What should I try first?
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white '07, Raask exh, Corbin seat, slipstreamer shie, Raptor, Routy's fwd controls, Baron tach, Frisco bars, Isogrips, Headlight and taillight modulators, Dial-a- jet, AME 9 deg chop kit, K&N air flt
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greenmonster
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Re: Front suspension bottoming out.
Reply #1 -
05/02/12 at 10:45:06
I'd start with the cheapest and work up. But that's my uneducated opinion.
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Re: Front suspension bottoming out.
Reply #2 -
05/02/12 at 11:01:28
1/4" of washers on top off the fork springs... Thicker oil will effect rebound more than compression...
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arteacher
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Re: Front suspension bottoming out.
Reply #3 -
05/02/12 at 11:10:21
Serow- I've got an inch of spacer over the top of the tube already and I don't think I could get the caps on with any more, but i will try if you think it will fix the problem.
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white '07, Raask exh, Corbin seat, slipstreamer shie, Raptor, Routy's fwd controls, Baron tach, Frisco bars, Isogrips, Headlight and taillight modulators, Dial-a- jet, AME 9 deg chop kit, K&N air flt
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Re: Front suspension bottoming out.
Reply #4 -
05/02/12 at 11:24:31
What do you weigh? That might make a difference on what the correct answer is.
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arteacher
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Re: Front suspension bottoming out.
Reply #5 -
05/02/12 at 11:47:18
250.
Progressive offers a fork spring for my application for $92. Would this help?
EDIT: ordered the progressive springs.
Also: the tubes in the chopper kit are Yamaha '95 Virago 1100 cc.
The Yamaha specs show two oil levels, one for US and one for UK. They also say that "if you hear a clicking noise on rough roads or hard braking increase the amount of oil to 409 cc" (UK model, up from 389 cc)
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«
Last Edit: 05/02/12 at 12:58:53 by arteacher
»
white '07, Raask exh, Corbin seat, slipstreamer shie, Raptor, Routy's fwd controls, Baron tach, Frisco bars, Isogrips, Headlight and taillight modulators, Dial-a- jet, AME 9 deg chop kit, K&N air flt
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Re: Front suspension bottoming out.
Reply #6 -
05/02/12 at 13:20:31
I'd try thicker oil. or more oil. More oil reduces the amount of air space. Can act like air springs.
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Serowbot
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Re: Front suspension bottoming out.
Reply #7 -
05/02/12 at 15:34:43
Forgot, you had the extended front... Try thicker oil,.. can't hurt...
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arteacher
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Re: Front suspension bottoming out.
Reply #8 -
05/02/12 at 16:09:47
How thick? I only wanna pull those tubes off once.
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white '07, Raask exh, Corbin seat, slipstreamer shie, Raptor, Routy's fwd controls, Baron tach, Frisco bars, Isogrips, Headlight and taillight modulators, Dial-a- jet, AME 9 deg chop kit, K&N air flt
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justin_o_guy2
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Re: Front suspension bottoming out.
Reply #9 -
05/02/12 at 16:38:21
Lean back?
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baker87
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Re: Front suspension bottoming out.
Reply #10 -
05/02/12 at 18:54:07
stronger springs will work... i would try 15 weight... but thats just my opinion... my bike has serious suspension dive when i hit the brakes, it is 1 1/2 from bottoming out... i plan to upgrade the springs when the seals go out... and i will run 15 weight, but i want it stiff as possible..
arteacher wrote
on 05/02/12 at 10:22:45:
I had to do a couple of quick stops today and the front suspension bottomed out. I can think of three remedies:
Thicker oil- I have 10 wt in them now.
More oil.
Stronger springs.
What should I try first?
Back to top
ride hard/live hard
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bill67
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Re: Front suspension bottoming out.
Reply #11 -
05/03/12 at 04:25:11
Serowbot wrote
on 05/02/12 at 11:01:28:
1/4" of washers on top off the fork springs... Thicker oil will effect rebound more than compression...
Thicker oil effects compression more than rebound.Smaller holes on the compression damping.
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william h krumpen
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Re: Front suspension bottoming out.
Reply #12 -
05/03/12 at 11:08:42
Id try heavier fork oil to begin with. Im not sure what is stock (maybe 15w), so maybe try 20w. That will slow down the compression a bit.
You can increase bottoming resistance by adding more oil also, but If you do too much you will blow out your seals.
If that doesn't work then get new springs.
That would be my path.
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arteacher
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Re: Front suspension bottoming out.
Reply #13 -
05/03/12 at 16:35:02
bill67 wrote
on 05/03/12 at 04:25:11:
Serowbot wrote
on 05/02/12 at 11:01:28:
1/4" of washers on top off the fork springs... Thicker oil will effect rebound more than compression...
Thicker oil effects compression more than rebound.Smaller holes on the compression damping.
Klotz? (sorry...couldn't resist
)
Also- I am looking at the damper and there is only one set of holes that function for both compression and rebound.
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white '07, Raask exh, Corbin seat, slipstreamer shie, Raptor, Routy's fwd controls, Baron tach, Frisco bars, Isogrips, Headlight and taillight modulators, Dial-a- jet, AME 9 deg chop kit, K&N air flt
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bill67
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Re: Front suspension bottoming out.
Reply #14 -
05/04/12 at 06:33:20
I haven't check these dampeners but I'm sure their are 2 sets of holes,I use Klotz 15 wt. fork oil.
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william h krumpen
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