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05-10.-2006, 10:09 PM
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#1 |
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Registered User
Join Date: Oct 2006
Location: Canada
Posts: 6
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Jumpy
Hi! New here.
I wasn't sure where to ask this, so I picked here. I just bought a pair of Specialized FatBoy slicks for my mountian bike and noticed that the front wheel had a bit of a jumpy feel to it. I immediatly thought I had somehow dented the rim a bit, but looking at it I can't see anything. Better safe than sorry, I replaced the rim with another and am still experiencing the jumpiness. I've checked the tire pressure and it seems reasonable. It's nothing major, it's more annoying than anything else, but it has me puzzled. I was hoping someone out there might have a clue as to what may be causing this. Any ideas?? I hope to talk to a lot of new friends on this site!! J.J. |
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01-12.-2006, 11:58 AM
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#2 |
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Registered User
Join Date: Dec 2006
Location: va beach, va
Posts: 9
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Re: Jumpy
Make sure the tire is seated on the rim all the way around. Spin the wheel and look at the tire/rim connection point. It should be the same all the way. If not, you can seat a tire a couple of ways. High pressure. This takes a fine touch and can backfire(pun intended). Another is lower the pressure until the tire is soft and grab the part not seated and try and pull it up. If it won't move lower the pressure a little and try again. If it moves, put air in and see how it looks.
With most decent tires today(fatboys are decent) high pressure method works good. Be ready to let the air out quick... |
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01-12.-2006, 12:24 PM
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#3 |
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Registered User
Join Date: Apr 2004
Location: Perth (Basso), West Australia
Posts: 3,508
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Re: Jumpy
Riding a MTB with slicks may require you to re-balance the bike, put some weight over the front end. This can be done with flat bars, a longer stem and bringing the seat forward a little.
If you have some bathroom scales try to get 35-40% of the total weight (rider + bike + load) on the front wheel. This assumes you have checked the tyre, as above. 
__________________
Cheers, George. |
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