You know the one, cool/freeze bearings in sandwich bag in freezer, warm hub with hair dryer.

I used such a method on an OEM hub many moons ago but does it work on on the Hope Evo hubs?

I know it should in principal, but in principal can turn out to be a nightmare in the real world!

Thanks for the help as always guys.

Can’t see why not although I’ve never had to try. My Evo’s are only 5 yrs old. 8)

There again, If you’ve got them out, what’s the problem getting them back in?

Not got them out as yet. Planning ahead…

Pretty confident I can remove them with some improvised drifts. Want to be a bit gentler putting new ones back in though. lol

Pretty confident I can remove them with some improvised drifts. Want to be a bit gentler putting new ones back in though. lol

You’ll be fine getting them out with a good drift & some support. Then ‘simply’ bash them back in using a big hammer & the right sized socket. 😆

Cool the bearings & warm the hub up to make it easier if you like though.

Great, last question, any idea of socket sizes I need as drifts?

I realise the OD of the socket may be different according to brand, but just want a starting point, cheers again.

About 24mm iirc (same size as rockshox damper topcaps).

Thats handy, just ordered a 24mm to service some Revelations.

Cheers for info!

Never needed to chill bearings when I’ve swapped them – brute force, ignorance and a healthy supply of profanities usually suffice – but it is sound engineering practice to do this.

I know on larger steel bushings on earthmoving equipment, OEM assembly lines will use liquid nitrogen (WARNING!: do not drink, even when mixed with Red Bull or Monster).

why not use the old bearings and some threaded bar with washers to push the new ones in? this has worked ok for me (actually thinking about it, I used a QR skewer)

I’ve changed all bearings on both my sets, whacking the old ones out with the axle and I had an appropriate diameter drift turned on a lathe to get them back in. you need an outer diameter of 30mm and it works for both front and back. Didn’t need to drink any liquid nitrogen but a little bit of grease helped them back in smoothly.

Hmmm…. good point, might give that a try too, cheers.

I found it cheaper to just buy the drifts from HOPE.Used a block of wood with a big hole drilled in it to support the backside and allow somewhere for the bearing to drop into.

Agree, the right tool for the job is the best option definitely.

As usual, trying to save a bit of money is all. Particularly post Christmas.

If I try the nitrogen route I’ll be sure to take pics! (that’s a joke, I wont be trying the nitrogen. Sounds like an interesting method though!)