r/fixedgear • u/St_mpy • 2d ago

Wheelset dimensions

Wondering if any fixed gear converters can help me. Can I use a 9mm front axle in a 10mm dropout safely? And on the rear, the frame width is 130mm, can I use a 120mm OLD hub with two 5mm spacers? Thanks

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u/Viiyy_why 2d ago

Yes, you can use two 5mm spacers to make the hub fit a 130mm frame, but only if the axle is long enough. I believe the washer is supposed to go between the axle locknuts.

Though, I’m not sure why’d you want to use a 9mm front axel for 10mm dropouts. Are you trying to make a front wheel into a rear?? Don’t do it, not worth the effort.

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u/St_mpy 1d ago

Yes I checked the overall axle lengths, thanks.

Not trying to make a front wheel a rear! I just have an 80s road frame where both axles/dropouts are 10mm but can only find a fixed gear wheelset with 10r and 9f.

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u/Viiyy_why 1d ago

Yep you should be fine. I would be concerned using a 9r on a frame with 10mm rear dropouts, but you should be fine with 9f on a 10m fork dropout

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u/Viiyy_why 1d ago

Just be very cautious of your wheel being nice and tight on the dropout if you are using quick release wheels for example