ZIPP Rear 177 hub play (new bearings)

Everything about building wheels, glueing tubs, etc.
Post Reply
kieran9186
Posts: 2
Joined: Sun Jul 08, 2018 9:30 pm

by kieran9186

Just gave my 2016 303 177 rear hub an overhaul, new axle, new shim, new enduro bearings in hub and freehub, they run really smooth but there seems to be marginal elemnt of play between the bearings and the new axle. :noidea:

Has anybody else experieced similar issues ? im considering taken the bearings out and swapping for SKF or similar.

The play may have been there before, i could be being over critical

by Weenie


alcatraz
Posts: 1234
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Does the hub have any form of preload adjustment?

Do you remember the inner wheel bearing to be quite easy to go over the axle and into the hub?

I had something I thought was a bearing play issue but it turned out it was the inner wheel bearing that had dug a bit into the alloy axle and also wasn't very hard to press into the shell (hand pressure enough) so what fixed it was a tiny amount of loctite 641 retaining compound on the inner race (and outer race). Hub is like new now and 80% of the play is gone.

If you use ceramic bearings, they usually have more play unless they cost a fortune. So if you don't want to pay a lot then just stick with skf (steel) or similar. I've tried enduro/nti/nsk/ntn and although they are all good I was most impressed with the low play in the recent skf. No fancy model either, just their simple 2RS standard bearing.

kieran9186
Posts: 2
Joined: Sun Jul 08, 2018 9:30 pm

by kieran9186

No preload on the 177 hub everything pushes together , can't quite remember how tight the bearing to axle fit was.

Tried the old bearings on the old axle they seem ok and I tried a spare enduro bearing equipped freehub and it certainly isn't as snug as i thought it would be.

I changed the axle as the the andodising was showing signs of wear on freehub side, I'm thinking now that this could of been caused by looseish bearing fit.

alcatraz
Posts: 1234
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

The wheel diameter amplifies the problem so that a small series of plays add up and are amplified into a large total play at the rim/brake/tire.

I suggest you take off the freehub and simply wiggle the axle sticking out of the hub shell. It should be almost fixed.

The inner wheel bearing is causing nearly all of the play in a wheel. Focus your efforts on getting a solid fit inner/outer race and that the play in the bearing itself is minimum.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post