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Author Topic: Taper head race bearings.  (Read 10391 times)

Offline royhall

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Taper head race bearings.
« on: August 15, 2014, 05:37:55 PM »
Hi. Bit of advice required if somebody could oblige. Am about to change the head race bearings on my 750F2 for taper bearings. Have bought a set that has the two races (fairly obvious which is top and bottom due to the different sizes). My kit also came with a large steel washer. Does anybody know where this washer goes. I assume it's there to build up the stack height to match the original ball races. My guess is that it goes underneath the bottom race on the yokes, but it is only a guess. Help Ta.
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Offline hairygit

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Re: Taper head race bearings.
« Reply #1 on: August 15, 2014, 06:45:41 PM »
I wouldn't swear to it being correct, but I fitted mine to the top of the upper bearing, where the adjusting nut contacts it, mine came with no instructions, but 15 years later still works fine. ;D
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ka-ja

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Re: Taper head race bearings.
« Reply #2 on: August 15, 2014, 07:09:30 PM »
Hi,
    don't know about the 750's, but it goes on the bottom of the yoke stem on the 400/4, it stops the bottom yoke "catching" the frame bottom bearing housing area.---ken
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Offline Trigger

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Re: Taper head race bearings.
« Reply #3 on: August 15, 2014, 08:32:52 PM »
It is known as a steering washer and it goes on the bottom of the stem. Then it is the rubber dust seal and so on.
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Offline Bitsa (Ralph Wright - RIP)

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Re: Taper head race bearings.
« Reply #4 on: August 15, 2014, 09:12:01 PM »
Trig
The frame I have got has which I can not believe has all the races removed.In your opinion do I go for tapers or the bog standard?I have no problems with the standard stuff only asking because never fitted the later.
Cheers
Bitsa
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Offline Trigger

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Re: Taper head race bearings.
« Reply #5 on: August 15, 2014, 09:23:27 PM »
Bitsa, your choice, your bike. If standard bearings are fitted and the cups are OK, i just fit another set of ball bearings. But, in this case i would go for a taper set.
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Offline Bitsa (Ralph Wright - RIP)

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Re: Taper head race bearings.
« Reply #6 on: August 15, 2014, 09:24:20 PM »
Cheers Mate
Bitsa
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Offline royhall

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Re: Taper head race bearings.
« Reply #7 on: August 15, 2014, 10:25:15 PM »
Thanks for that info Trigger. Is it absolutely essential to fit the dust seals with taper rollers as I don't have any, and non were supplied with the kit. Cheers.
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Offline Trigger

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Re: Taper head race bearings.
« Reply #8 on: August 15, 2014, 10:35:53 PM »
Not all kits come with the dust seal. It is just fitted to stop road dirt and water going into the lower roller. If you pop along to your plumbing shop with the washer and ask if they have a rubber washer around that size. I think the last one i got was a little bigger, so just trimmed it to size. But, not essential.
« Last Edit: August 15, 2014, 10:42:13 PM by trigger6969 »
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Offline Norniron

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Re: Taper head race bearings.
« Reply #9 on: August 16, 2014, 12:11:11 AM »
Quote from: trigger6969 on August 15, 2014, 09:23:27 PM
Bitsa, your choice, your bike. If standard bearings are fitted and the cups are OK, i just fit another set of ball bearings. But, in this case i would go for a taper set.
Hmm is that so,i can remember me changing mine to tapered bearings and a certain purist somebody ribbed me for it.
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Offline RGP750

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Re: Taper head race bearings.
« Reply #10 on: August 16, 2014, 08:01:42 AM »
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Offline Trigger

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Re: Taper head race bearings.
« Reply #11 on: August 16, 2014, 11:57:08 AM »
Norniron, there was nothing wrong with your cups on the old ones. Boy racers have to have boy racer bearings ;)
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Offline RGP750

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Re: Taper head race bearings.
« Reply #12 on: August 16, 2014, 01:27:52 PM »
I'm a bit old to be a boy racer, only ever touched 90 once on a bike
the road looks too hard at that speed ;D
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1972 500/4
1973 CB175
1972 CB175
1959 BSA Super rocket
1927 960cc Matchless 'v' twin
1969 750 K0

Offline Trigger

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Re: Taper head race bearings.
« Reply #13 on: August 16, 2014, 05:52:08 PM »
When i was on about boy racer i mean boy cafe racer. 90 mph? I had a hayabusa with a nice Turbo fitted, at 210 the sweeping curves on the dual carriageway get a little tight  :) Sold it before i pushed it too far.   
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Offline RGP750

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Re: Taper head race bearings.
« Reply #14 on: August 16, 2014, 07:41:56 PM »
210 bloody hell  my backside wouldn't cope with that. :o
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1972 500/4
1973 CB175
1972 CB175
1959 BSA Super rocket
1927 960cc Matchless 'v' twin
1969 750 K0
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