09-24-2016, 11:33 PM | #16 | |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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but you also say yer NOT sure what size & never had one... confusing post.... what is needed is someone to measure them... not with a ruler or calipers.. get a snap gauge & micometer... So yer can check for round/ tapper /weld destortion then it would be possable to see if a needle races can be fitted.. as a rubber bush even with a outer sleeve can be pushed in to any hole near the right size but not so with a needle race... Anything ealse is just quess work... the japs line bore theres after welding/ casting so true is true... i surspect the rubber bushs are used to stop the need to line bore just jig welded...as the rubber is very forgiveing to misalinement... by misalinement we are talking points of a millimeter at the eye which would be millimeters at the other eye... ...
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09-25-2016, 09:50 AM | #17 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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09-25-2016, 10:39 AM | #18 |
Join Date: Sep 2014
Posts: 1,913
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If you use bronze bushings, do you use a steel sleeve around the pivot bolt or just leave the pivot bolt loose? Wouldn't a loose pivot bolt cause wear to the frame?
Wonder if the Lifan rubber bushings would fit. Mine have lasted 9 years and 50,000+ miles so far. IMO the best set up is tapered roller bearings like many street bikes use. |
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09-25-2016, 11:06 AM | #19 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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09-25-2016, 01:21 PM | #20 | |
Join Date: Jun 2011
Posts: 1,335
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I do not currently own a CB.So I have no way of knowing if the roller bearings are an option, or what may work.I was trying to say that they could be an option. All of my Japanese bikes have the needle style roller bearings in the swing arm and shock linkages.I've never had one fail. |
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09-25-2016, 03:38 PM | #21 |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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Yes, they are like the bushings in a control arm. Alfa-Romeo sports cars had (I don't know if they still have) all bronze bushings in the A-arms and even the anti-roll bar of the front end. It made for a very tight handling sports car. It does the same thing for a motorcycle with a rear swing arm.
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09-25-2016, 06:37 PM | #22 |
Join Date: Jun 2011
Posts: 1,335
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I've never seen a bike that didn't have an inner swing arm spacer.It my be a quality control issue.
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09-27-2016, 10:53 PM | #23 |
Join Date: Sep 2016
Posts: 13
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My Hawk did not have a center pipe in between the swing arm bushings and the frame could be tightened down on to the swing arm. The CRF230 swing arm bearing kit works great once you machine the swing arm pivot inner diameter from 25mm to 26mm to accept the new bearings. I had it machined for a .001" interference fit.
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09-28-2016, 12:58 AM | #24 | |
Join Date: May 2016
Location: Bismarck, ND
Posts: 868
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2015 and 3/4 RPS Hawk 250. Most people would call it a 2016 but the MCO didn't. |
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09-28-2016, 07:16 AM | #25 | |
Join Date: Jun 2011
Posts: 1,335
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09-28-2016, 07:16 AM | #26 |
Join Date: Jun 2011
Posts: 1,335
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If I'm not mistaking,they're all the same.
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09-28-2016, 08:54 AM | #27 |
Join Date: Sep 2016
Posts: 13
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They are all the same 03-15 CRF150f and CRF230f. I bought this set on ebay. http://www.ebay.com/itm/331501807999
I ended up using four bearings instead of two. I didn't have the swing arm machined all the way through, just deep enough for two bearings on each side. |
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09-28-2016, 12:42 PM | #28 | |
Join Date: Sep 2014
Location: Blue Ridge Mtns Ga
Posts: 437
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Mark 2015 Haosen Hawk 250 2014 CRF250L 2014 CB500X Rally Raid |
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09-29-2016, 07:54 AM | #29 | |
Join Date: Jun 2011
Posts: 1,335
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