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Trail problem?

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Old Jun 9, 2012 | 04:22 PM
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christer_malmesjo@hotmail.com's Avatar
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Default Trail problem?

My Rocker is lowered 2 inches in the front and 1,5 inches in the back? Now I would like to mount a 21 inch front wheel. Will I get a trail problem? I think the stock trail is 6,2 inches.
 
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Old Jun 10, 2012 | 09:36 AM
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The diameter of the 21 compared to the 19 isn't going to be much different. You've decreased your trail with the lowering you've done, so it is a little less than the stock 6+ inches. The 21 may raise the front a wee bit, which would increase trail. You'll probably end up around 6 inches, which is fine. 6 inches is on the high side for an easily handling bike at low speeds. You'll get more low speed front end flop compared to a bike with less trail, but at least you won't come near to the high speed tank slapping range caused by too little trail.
 
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Old Jun 11, 2012 | 09:49 AM
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Thanks for your answer. I used RB Racing Rake and Trail Calculator and it says 6,51 inches. Ok?
 
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Old Jun 11, 2012 | 02:47 PM
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6.51 will be very stable. You might notice a little less nimble-ness at very slow speeds.
 
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