head bearings

ZED1-18again!! · #1 PostAuthor: **ZED1-18again!!** » Mon Dec 12, 2011 11:07 pm

Hi all, was wondering what advantages taper roller bearings have over stock ball-bearings, when fitted to zeds steering heads?? And how easy to fit them?

hanskloss · #2 PostAuthor: **hanskloss** » Tue Dec 13, 2011 7:44 am

Hi, the advantage is the working surface of a roller is much larger than of a ball so the taper bearing should last much longer, I did mine last year and the job was easy, plenty of sets on the market but not many that have dust seals included, I got AllBalls brand wit the seals, I've heard tapers might be difficult to remove but considering the design there should be no need

DogsbolloxofZ1B · #3 PostAuthor: **DogsbolloxofZ1B** » Tue Dec 13, 2011 7:23 pm

They are a swine to remove, I think the jury is out on wether they deliver any tangible benefit. :??

If you do fit them, remove the old 1/4" ball cups and using a Dremell grind a small pry point in such that you can get an 8mm dia rod at the right angle to drive the outer races out in the future.

Mike

Crofty · #4 PostAuthor: **Crofty** » Tue Dec 13, 2011 7:27 pm

Thanks for the tip DB, the races I have taken out in the past were getting replaced, so just tacked a small bar of metal across to tap on from other end.
Like that idea though, guess what i will be doing tomorrow. Crofty

Gavin · #5 PostAuthor: **Gavin** » Sat Feb 18, 2012 3:56 pm

They are not that easy if in the past a plank has put the upper head bearing in upside down. so i couldn't even use the old outer with new inner race.
There are some dopes about shouldn't be allowed to breed

PAULJAC47 · #6 PostAuthor: **PAULJAC47** » Sat Feb 18, 2012 4:05 pm

Doddle to remove old races i use a rounded,flattened steel bar to drift out old races,the ideal way to fit new ones is a set of plastic bearing drifts but a piece of hardwood works ok,i reckon its a very worthwhile mod and have done it on both of my zeds the standard set up is ok for pushbikes :lol:

Gavin · #7 PostAuthor: **Gavin** » Sat Feb 18, 2012 4:20 pm

PAULJAC47 wrote:Doddle to remove old races i use a rounded,flattened steel bar to drift out old races,the ideal way to fit new ones is a set of plastic bearing drifts but a piece of hardwood works ok,i reckon its a very worthwhile mod and have done it on both of my zeds the standard set up is ok for pushbikes

If the outer race is upside down there is nothing to put the bar onto.
As the inner race is in situe i am going to use a socket which is slightly narrower than the stock tube
And a Lump hammer

head bearings

head bearings

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