Hi,can anyone tell me the wheel bearings sizes front and back please as the wheels I bought didn't have any fitted to match up thanks

I just called In Motion for mine a few months back and they arrived in the post next day.  About £11.00 per pair....  Can't remember the numbers.....  

 

https://www.inmotiontrials.com/contact-us/

 

Edited September 29, 20169 yr by gasserguy

Yeh I did that with Bob Wright and he sent the wrong ones,wanted to try my local bike shop

If you get the sizes then you want to be going to a bearing supplier, not a bike shop.

Good quality bearings can be obtained at a reasonable price from suppliers through the net. Names have been mentioned on here in the past so a search might bring them up.

Rear wheel. Sprocket side takes a single bearing size is 17x40x12 number 6203. Brake side takes two smaller 17x35x10 6003 bearings.

 

Front wheel takes two 15x35x11 number 6202. 

Edited September 30, 20169 yr by fantic240motor

Thanks for replies gents, just had a quick measure and the outside diameter appears to be 40mm ish with a axle diameter of 15mm .....did the 305 take a bigger bearing or another variant as I bought the wheel separate but is akront with a fluorescent red / orange hub confused now cheers

Your 245 should have 6202 bearings measuring 15x35x11 (15mm spindle) The 305 is the same. 

 

If you have an orange hub that takes 42mm bearings it's for the later 7 series model with up side down forks. They take 6004 bearings measuring 20x42x12 (20mm spindle).

 

There is a bearing 6302 15x42x13 that'd probably work okay. If you can mock up the wheel in place to check the disc lines up okay with the caliper it would be easy enough to adjust the spacers to fit. Worth a try.

Many thanks for clearing that up, now the next poser, on my loose spindle I only have 1 spacer and a speedo drive is that all there is or am I missing something, also I take it the tube I have compresses between the bearings in the hub. thanks again

Sounds like you have all there is. The tube goes between the bearings. If the speedo drive is the type I'm thinking of it can be taken apart. The spacer can be pressed out and used without the drive part for a neater look and less drag, that's if you don't want a working speedo of course. Some people just make a spacer for this side.

 

However the spacing for your mix and match set up will no doubt be different so some fabrication with a lathe may be needed. Even the centre tube may be a different length. The inside measurement of your forks might be different than the up side down forks and the 6302 bearing are 2mm wider. 

 

I'd mock up the wheel before buying bearings. If it looks like the brake will line up and there's no issues then all good, buy the bearings and work out dimensions. It may well slot in with virtually no messing about you never know!

Thanks for that, managed to get some bearings f.o.c from the engineers workshop at work, will put it together and see what fettling needs doing with the spacer and get a one made up instead of the speedo drive. Cheers