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YZF1000R-SPRINT
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Joined: 23 Jan 2006
Posts: 319
Location: West Yorkshire
PostPosted: Mon Apr 26, 2021 12:20 pm    Post subject: Bearing codes for Thunderace Reply with quote

Is there a list anywhere that contains a list of Bearing codes for the Thunderace?

I'm going to replace every bearing for the chassis :-

Headstock
Swingarm
Front wheel
Rear Wheel
Shock linkage

And planning on buying these from NON Yamaha, hopefully this will be cheaper but keeping my options open, so rather than waiting until I remove the old bearings and then get the code form those, I'd like to buy then just fit as and when etc.

Hope this makes sense

Jason

PS if there isnt one then I might make one and post up on here
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Stig
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PostPosted: Mon Apr 26, 2021 3:43 pm    Post subject: Reply with quote

Hi Jason, Iíve never seen any on-site or on any other forums Iíve visited

Banner001 did something similar for the FZR swingarm set up from memory
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Goshreally2
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Joined: 21 Jan 2020
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Location: Buckinghamshire
PostPosted: Mon Apr 26, 2021 4:13 pm    Post subject: Reply with quote

Lists for bearings are rare and I have never come across one, this seems to apply to all 4 big jap manufacturers - I have owned a kwak gpz900r, zxr750, gpx 750,gpz100rx. Honda vf750, cbx750. Suzuki gsxr750 slabby. Yamaha rd200 and probably the best and current bike Fzr1000 genesis, never found reliable lists for any. Having said that people such as Pyramid parts can supply wheel bearings and seals and they already have all the info. and are cheap - on Ebay. That eliminates the need to strip down prior to order. Yambits and Wemoto are likely to have the shock link bearings ( but if you want to source from a local supplier - bolt and bearing etc. they usually want to see the bearing or require measurements - so strip down necessary). Headset bearings - ebay again, mine cost £14 inc. postage and they are Japanese. I have started filling out the back page of my manual with bearing measurements, bolt sizes etc, I have always done this as I have not had much luck in the past even when talking to manufacturers. Good luck mate, I hope someone can come back to you with something more useful.
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nuggitt
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PostPosted: Mon Apr 26, 2021 4:45 pm    Post subject: Reply with quote

I've just found this in my saved bits. Donít know if itís any use to you?

SWINGARM BEARINGS from Banner001 re-build

Now the bike is coming together more and more i thought i would add to the information regarding alternative swingarm bearings as ive found a cheap replacement for one of them, and IMO it will seal better than the original.

http://www.cmsnl.com/yamaha-fzr1000w-1989_model9477/partslist/E-07.html

we all know that you can swap the spherical bearing (part 25) for the splatshop alternative (http://www.splatshop.co.uk/shock-bearing-only-gasgas-ge12pw.html)

and we all know that you can swap the 4 pairs of dog-bone bearings (part 15) for the 17x24x30mm ones from marksman bearings (http://shop.marksman-ind.com/bhkm1730ju---17x24x30-sealed-3012-p.asp)

...but did you know that you can sort of buy the single bearing (part 19) from marksman as well...will a slight modification.

the original bearing is a 20x27x35mm double sealed bearing, but the width of the swingarm linkage at that point is ~42mm so this leaves about 3.5mm either side of the bearing where crap can gather...not good.

my solution, buy the 20x27x30mm bearing (unsealed) from marksman bearings (http://shop.marksman-ind.com/yt202730eo1---20x27x30mm-full-complement-bearing-9881-p.asp) and then buy 2x 5mm thick 20x27mm rubber oil seals from ebay (http://www.ebay.co.uk/itm/161040814011?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649) and fit those either side of the bearing...job done, you now have a much thicker and better double-edged oil/dirt seal at both ends (the original is just a tiny single rubber seal at each bearing end) and you have reduced the ability for dirt to build up in there (and scratching the inner race tube) by making the end gaps ~1mm as opposed to 3.5mm each...and it saves you a packet!

in summary for a full set of new roller bearings:-
1x spherical bearing (http://www.splatshop.co.uk/shock-bearing-only-gasgas-ge12pw.html)
4x dog-bone bearings (http://shop.marksman-ind.com/bhkm1730ju---17x24x30-sealed-3012-p.asp)
1x needle roller bearing (http://shop.marksman-ind.com/yt202730eo1---20x27x30mm-full-complement-bearing-9881-p.asp)
2x oil seals (http://www.ebay.co.uk/itm/161040814011?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649)

cost:-
1x spherical bearing £19.95 (original £40)
4x dog-bone bearings £9 (original £20)
1x needle roller bearing £6.71 (original £27)
2x oil seals £2.20

total cost = £67.06
saving = £79.94!

from what i remember, the 2 bearings in the swingarm pivot are an unusual size and are not made by commercial manufacturers so you do need to stump up full payment, or look around on ebay, i picked up both of mine (OEM) for £5 each...

so you can completely re-do your rear end for under £80...there are no excuses now for anyone not to do it, especially if you are replacing your shock with something new...just remember to grease everything up to the max![/url]

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YZF1000R-SPRINT
Test Rider
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Joined: 23 Jan 2006
Posts: 319
Location: West Yorkshire
PostPosted: Tue Apr 27, 2021 11:52 am    Post subject: Reply with quote

Cheers guys,

I'll look at all the info supplied and I'll also do a list of bearings and seals (For the running gear for now) and post up on here, probs end of June

Engine bearings and seals will be another post lol

I've been doing a ton of work around the house so my Thunderace project has been delayed somewhat :-(

Jason
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