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Posted (edited)

I replaced the bearings in my hope pro2 hubs front and back, front spins freely, ie give it a good spin and it carries on spinning for a long time, the back hub even with the chain off(so no drag from the freehub ratchets) does not spin very freely, it is quite hard to turn the axle with my fingers with the wheel out. I did get carried away filling the bearings with grease, I noticed that added quite a lot of resistance.

 

Is this normal for a Hope rear hub or have I got something wrong?

Edited by Skylark
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Posted

I replaced the bearings in my hope pro2 hubs front and back, front spins freely, ie give it a good spin and it carries on spinning for a long time, the back hub even with the chain off(so no drag from the freehub ratchets) does not spin very freely, it is quite hard to turn the axle with my fingers with the wheel out. I did get carried away filling the bearings with grease, I noticed that added quite a lot of resistance.

 

Is this normal for a Hope rear hub or have I got something wrong?

I think you have a bearing that is not in straight or is damaged - this happens easily if you don't have the correct tools, and when inserting the bearing the seal gets pressed into the bearings - usually you can see this when you remove the bearings. - remove and retest each bearing, and replace.

Posted

I think you have a bearing that is not in straight or is damaged - this happens easily if you don't have the correct tools, and when inserting the bearing the seal gets pressed into the bearings - usually you can see this when you remove the bearings. - remove and retest each bearing, and replace.

 

Thanks V12, I think I may have damaged the drive side bearing knocking it in, so the rear hub should spin almost as freely as the front hub?

Posted

What V12Man said!

If you're going to do your own wheel bearings, its best to have the proper press (or a decent DIY tool), knocking them in with a mallet etc. is a sure way to get them in skew or damage the bearing.

Posted

Would using 2 thick washers and some threaded rod pull them in squarely/do the job?

Yes - IF.... and only IF...... the washers cover the outer bearing race well enough that they do not apply pressure to the seal, AND are strong enough that they do not bend when putting the bearing in and then apply pressure to the seal.

Posted (edited)

Something I found when doing the bearings on mine was that the plastic seal between the freehub body and the hub also cause quite a bit of friction. There is a little groove it slots into on the freehub - apply some grease there before putting back the seal. That sorted it out for me.

 

Just know that Hope rear hub is a bit tighter than most.

 

Check the bearings first though! I found that adding some copper paste to the inner race of the hub before you put them back also helps them lining up properly!

Edited by Vinnydabutcher
Posted

Yes - IF.... and only IF...... the washers cover the outer bearing race well enough that they do not apply pressure to the seal, AND are strong enough that they do not bend when putting the bearing in and then apply pressure to the seal.

 

Ok I've almost definitely knocked in the drive side bearing skew, will pull it out and report back on what how it goes and using a rod and washers to press a new one in.

Posted

Ok I've almost definitely knocked in the drive side bearing skew, will pull it out and report back on what how it goes and using a rod and washers to press a new one in.

This is when you pray you have not damaged the hub...... not that that will make any difference....

Posted (edited)

This is when you pray you have not damaged the hub...... not that that will make any difference....

 

How could I have damaged the hub?

I didn't use a helluva lot of force, first try I did knock it in for 5mm a bit skew though but then started again and it went in straight

 

I think I more damaged the bearing itself(seal or race) than knocking it in skew, I probably shouldn't have used the word skew when describing it in my other reply, if I'd knocked it in properly skew the hub would have been totally butchered

Edited by Skylark
Posted

How could I have damaged the hub?

I didn't use a helluva lot of force, first try I did knock it in for 5mm a bit skew though but then started again and it went in straight

 

I think I more damaged the bearing itself(seal or race) than knocking it in skew, I probably shouldn't have used the word skew when describing it in my other reply, if I'd knocked it in properly skew the hub would have been totally butchered

The bearing seat in the hub gets damaged and out of round - sometimes a small groove - usually it's not terminal.

Posted

How could I have damaged the hub?

I didn't use a helluva lot of force, first try I did knock it in for 5mm a bit skew though but then started again and it went in straight

 

I think I more damaged the bearing itself(seal or race) than knocking it in skew, I probably shouldn't have used the word skew when describing it in my other reply, if I'd knocked it in properly skew the hub would have been totally butchered

i think the question is which bearing are you referring to?

there are several in the rear, the freehub body as well as the actual hub itself. also remember its alu so a bearing could quiet easily bend the alu without much force being applied.

i noticed when i serviced mine and changed the bearings that i initially used too much grease so the freehub didn't spin and freely and sound as nice as i wanted it to, after removing most of the grease and only applying a small amount to lube the whole system it was like butter, did take a few rides for the bearings to run freely though

Posted (edited)

1. How did you get to put more grease in the bearing, it should be a sealed unit? Too much grease on the pawls?

 

2. Bearings need to be pressed into place. Warm the hub up in the sun or use a hair dryer carefully and place the bearing in a plastic bag in the freezer for an hour. Use a correctly sized spacer, sockets work well enough and a G clamp with two blocks of wood and tighten the clamp to seat the bearing. Never take a hammer to a bearing, you will damage the bearing race.

Edited by Plentipotential
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