Forks bottoming

How to make an old bike handle like a new (factory) one!
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billybluesky1
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Posts: 96
Joined: Sat Aug 03, 2019 1:03 pm
Location: Bury ,Lancashire. UK.

Forks bottoming

Post by billybluesky1 »

Hi
After looking through older posts it seems the way to go to eliminate the forks bottoming out under heavy braking is to use spacers, its also mentioned that putting air in them contributes to blowing seals,
any new thoughts / recommendations on this
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georgew4714
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Joined: Thu Aug 30, 2007 3:02 am
Location: Newton New Hamshire USA

Re: Forks bottoming

Post by georgew4714 »

I've had bottoming forks for a long time , which I haven't bothered to remedy but from all the time spent here I'd say your fork springs are tired . These bikes are going on 40 years old . I guess spacers may help , but I believe the real fix would be to replace the springs.

I have on occasion put air in before a long riding day but the seals in the crossover tube are also 40 years old so by the end of my ride , the air has all leaked out and it's back to bottoming . But it's ok to try it if you'd like . I believe the manual only recommends like 5-8 psi if I remember correctly.

As a side note , bottoming under braking may also be pointing towards the anti-dive system not working.

Good luck
84 750E1 ,zx7 swing arm & rim , Zr7s shock ,dyna coils, k&n , bov , afpr , variable resistor for race mode. Ported spider ,dump pipe , Evergreen billet HT-10 , RTI hydraulic clutch .
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