Replace M10 axle fixed gear hub with 3/8” axle?
 

Hi all,
new to this forum, nice to meet you all.

I bought an Aliexpress fixed gear hub with an M10 axle. I aim to put wingnuts on the axle. Most wingnuts are for 3/8” axles and I cannot find any new M10 wingnuts. Velo Orange stopped selling theirs a few years back.

The easiest solution would be to replace the M10 axle with a 3/8” one, then get some vintage 3/8” wingnuts from EBay. Has anyone done this and what are things to look out for? I would need a new 3/8” axle and bearring cones to fit the hub bearrings I suppose. As well as the 2 thin lock nuts to hold the cone in place.
Are the bearrings on most rear hubs the same size?

I can take some photos of the hub tomorrow if that helps.

Sounds like a bad idea all around. I wouldn't buy anything from Alibaba and his 40 thieves and then try and replace stuff on it to run wing nuts which are a poor way to hold/tighten a hub. There is a reason you rarely if ever see them anymore aside from vintage stuff and maybe stuff like VO which is going after that vintage oddity market (not that it is all bad I have their bars which are quite nice and a few other parts from them)

I would recommend getting a good hub and using the proper nuts for it and that way things stay tight. If you are desperate for a 3/8 axle and doing the wing nut thing I think Suzue made a 9.5mm hub or there are coaster brake hubs that have that axle and 120mm spacing and potentially some BMX stuff depending on spacing needed.

Welcome to the forum.

Which Alibabba Hub are you asking about? Will not an M10 Wing Nut do? Alibabba has many of those in Steel, Brass, and aluminum.

Another solution might be to buy vintage wing nut and then by Helicoil reduce the thread to M10...

https://www.mcmaster.com/products/he...read-size~m10/