Swing arm movement
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So i have been building two DT 125r's for a while now. However they both seem to have up and down movement in the swing arm. I'm struggling to find a bearing kit that i'm certain would fit.
Any help or advice would be appreciated.
when on a stand the swing arm will move about 3-5 mm up and down. I'm sure this would fail an MOT so want to get it sorted ASAP so i can sell it.
You mean at the frame/swingarm bolt?! That sounds beyond wear. I’d check the bolt is the proper size...
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So i have been building two DT 125r's for a while now. However they both seem to have up and down movement in the swing arm. I'm struggling to find a bearing kit that i'm certain would fit.
Any help or advice would be appreciated.
when on a stand the swing arm will move about 3-5 mm up and down. I'm sure this would fail an MOT so want to get it sorted ASAP so i can sell it.
@kylescave there's a needle bearing and sleeve, where the swingarm pivots on the frame bolt. Pretty sure its a common size bearing, possibly 22x28x20mm but don't hold me to that.
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You mean at the frame/swingarm bolt?! That sounds beyond wear. I’d check the bolt is the proper size...
@SpookDog No i do not think it is the swingarm bolt. From what i can see its moving from the rear shock linkage. I'm not sure of the name. Wishbone? Dogbone? So i believe its the bearings or sleeves in that.
But both my Dt's have this issue otherwise i would have swapped the part for now.
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@kylescave there's a needle bearing and sleeve, where the swingarm pivots on the frame bolt. Pretty sure its a common size bearing, possibly 22x28x20mm but don't hold me to that.
@DTR-NSR I've changed the sleeve bearing that the swing arm bolt goes through if that's what you mean. But i think the movement is coming from the rear shock linkage. where it bolts onto the swing arm? Or is that what you meant.
I was going to replace the bearings/sleeve in that link however im struggling to find a kit.
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@DTR-NSR I've changed the sleeve bearing that the swing arm bolt goes through if that's what you mean. But i think the movement is coming from the rear shock linkage. where it bolts onto the swing arm? Or is that what you meant.
I was going to replace the bearings/sleeve in that link however im struggling to find a kit.
@kylescave Should still be able to get these parts from Yamaha
90387-164U8 - Part number for the collars
I'd grab genuine collars then get the bearings from SimplyBearings.co.uk
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@kylescave Should still be able to get these parts from Yamaha
90387-164U8 - Part number for the collars
I'd grab genuine collars then get the bearings from SimplyBearings.co.uk
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@Calum Okay sounds good, any chance you know the bearing size or can direct me to where i can find them? Many thanks.
@kylescave The bearings will have markings on them that you can use for reference. Simplybearings.co.uk will have them, that's where I got them from.
https://www.ebay.co.uk/itm/112551533577
But someone is selling them on eBay for £20
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@kylescave The bearings will have markings on them that you can use for reference. Simplybearings.co.uk will have them, that's where I got them from.
https://www.ebay.co.uk/itm/112551533577
But someone is selling them on eBay for £20
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@Calum Aren't those the swing arm bearings though? They are the ones I've replaced. Or is it possible that the linkage uses the same bearing.
@kylescave No sorry, they were the swinging arm bearings.
I vaguely remember doing them on mine. But I can't recall what the sizes were. Just press them out and get the part number from them
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@kylescave No sorry, they were the swinging arm bearings.
I vaguely remember doing them on mine. But I can't recall what the sizes were. Just press them out and get the part number from them
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Do a search for :
‘Yamaha DT125R rear suspension linkage repair kit’It’s not cheap (@ £110) but once done and properly maintained it should last forever. Nobody greases up the nipples on these! That’s why they fail...
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I've collected all the parts to do the swingarm on my TDR (basically a DTR) from Yamaha / Wemoto and they were horrendously expensive. Bet its cost something daft like two hundred quid or even more for the 125 bits.
Strange then that All Balls make a kit for my DT200WR that includes everything across a couple of kits for around a hundred quid!
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I've collected all the parts to do the swingarm on my TDR (basically a DTR) from Yamaha / Wemoto and they were horrendously expensive. Bet its cost something daft like two hundred quid or even more for the 125 bits.
Strange then that All Balls make a kit for my DT200WR that includes everything across a couple of kits for around a hundred quid!
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Most stolen bike in the UK tax!...
If you checked the sizes I bet most bits are the same. The 200 does have an ally swing arm though, no?...
@SpookDog yes the 200wr has an aluminum swingarm but so does my 125r (got a dt200r one) and I bet you are correct that loads of bits are the same.
Oddly though the the 200 is narrower than the 125 with the linkage mount a different distance from the pivot so would not be a direct swap either
