Folding Bikes - 2008 Downtube 9 Play In Stem & Fork?
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02-13-08, 10:19 PM
Just got my first folder a 2008 "9" with the hope of being able to always have a ride on my few travels. The ride seems fun, but I have some questions about the folding stem part & the suspension fork. The suspension fork has some play like the fork doesn't have bushings beneath those seals. This is probably normal being a cheap fork which seems to also have rather soft springs. The next issue I'm not so sure about, but there is a bit of play where the folding clamp is on the stem. All this tested by holding the brakes & rocking the bike on it's front wheel. I know some flex is likely normal because fo the length of those parts, but should they be stiff like the frame fold point or is the play normal?
Sounds to me like you need to adjust the headset -- loosen the big 8-sided nut (you'll need a 36 mm wrench), tighten the one below it a little, and tighten the top nut again. You want it tight enough that there's no play, but the fork still turns freely.
02-14-08, 03:14 PM
I took a closer look at it & i think it's just the nature of the hinge between the upper & lower steerer. The bolt that connects them is .015" - .020" smaller in diameter then the holes it goes through. The loose tolerance there allows some movement with the quick release side acting as the pivot point. I was able to lessen then affect by wrapping a .005" brass shim around the connecting bolt there.
I only wish it were available frame only because I already feel like replacing several of the stock parts.
I only wish it were available frame only because I already feel like replacing several of the stock parts.If you look at what you can get those quality level parts for, then I doubt that there would be great deal of difference between a bare frame and a full bike. Wheels are the most expensive item but stuff like the headset, handlebars seat post and the like would be a few $ each. Even the forks would be very low cost as OEM parts, I would estimate below $20 or even below $10. So go ahead and upgrade, you won't be out of pocket by much at all due to discarding the stock parts.
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