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BMX General => BMX Chat => Topic started by: griff on February 14, 2011, 06:19 PM

Title: stupid question about axle sizes and adaptors
Post by: griff on February 14, 2011, 06:19 PM
1) when people say 10mm is this the same as 3/8"?
I know an inch is 25.4mm so strictly speaking it's less, ie 25.4/8x3=9.525mm, but after running into issues with my mongoose rear axle though it best to check

2) are those axle converters any good? was offered some 10mm axle wheels and have seen a lot on the bay, but have 14mm pegs waiting to go on and dropouts on forks are bigger than 10mm

btw if anyone has any of these lying around let me know

cheers

grif
Title: Re: stupid question about axle sizes and adaptors
Post by: SaMAlex on February 14, 2011, 06:28 PM
Its pretty safe to say that when anyone talks about a "10mm" axle, they actually mean a 3/8. You can get actual 10 mm axles but not many hubs have them. They wont quite fit in some tight dropouts and, obviously, they need different wheelnuts and hardware. You almost wont notice the different, but a 3/8th nut wont fit on a 10mm axle, and the other way round will be lose.

Axle converters work great for fitting 3/8th wheels in a 14mm dropout. (they'll prob work on 10mm too, the washers aint usually aint a very tight fit)
Title: Re: stupid question about axle sizes and adaptors
Post by: griff on February 14, 2011, 06:34 PM
Its pretty safe to say that when anyone talks about a "10mm" axle, they actually mean a 3/8. You can get actual 10 mm axles but not many hubs have them. They wont quite fit in some tight dropouts and, obviously, they need different wheelnuts and hardware. You almost wont notice the different, but a 3/8th nut wont fit on a 10mm axle, and the other way round will be lose.

Axle converters work great for fitting 3/8th wheels in a 14mm dropout. (they'll prob work on 10mm too, the washers aint usually aint a very tight fit)

thanks  :daumenhoch: since I'm running out of time for creation though I might just try and find a pair of nuts for whatever size axle the rear is (measuring with tape measure it was about 12mm across and the 14mm nuts/pegs I have don't fit, nor do the smaller nuts Ed kindly sent me which I think are 10mm
serves me right for buying a bike in the dark without checking
Title: Re: stupid question about axle sizes and adaptors
Post by: ED209 on February 14, 2011, 07:09 PM
griff - you've got pegs for both sizes of axle  :angel:
Title: Re: stupid question about axle sizes and adaptors
Post by: griff on February 14, 2011, 07:23 PM
griff - you've got pegs for both sizes of axle  :angel:

I did have  ::)
but rather hastily gave them away since I thought I had 14mm axles on both my wheels  :-[
the front is 14mm, fook knows what the rear is

(in any case the dropouts might be a bit baggy for 10mm - fronts take the 14mm axle with some very gentle 'persuasion' rears need a bit of filing first but still bigger than 10)

one way or another should be rolling by creation - will have to sort it out properly afterwards
got my eye on some used tuffs...
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