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Author Topic: Optional RM swingarm 77 ?  (Read 3706 times)

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Offline suzuki27

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Optional RM swingarm 77 ?
« on: June 16, 2016, 06:29:06 pm »
US ebay at present is what looks like the optional aluminium swingarm for the 1977 RM's. The brake tab is in the correct place etc. He has $175 on it.
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Offline Oldfart

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Re: Optional RM swingarm 77 ?
« Reply #1 on: June 16, 2016, 06:47:57 pm »
Look at were the tab is welded on the OPTIONAL ARM in place,  and there will be no visible weld.

And this is why I cant be farked visiting this site anymore ....  quoted   "I'm not going to tell what it is but there is an obvious difference"
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Offline craigclayton

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Re: Optional RM swingarm 77 ?
« Reply #2 on: June 16, 2016, 07:08:07 pm »
Not sure if I'm looking at the same one but looks to me like a painted steel arm!
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74 Bultaco 250, 77 RM125b

Offline LWC82PE

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Re: Optional RM swingarm 77 ?
« Reply #3 on: June 16, 2016, 07:32:29 pm »
Yeah 250C arm is a steel one
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Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022

Offline matcho mick

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Re: Optional RM swingarm 77 ?
« Reply #4 on: June 16, 2016, 07:33:42 pm »
it's not the site per se,it's the little tedius remarks that make it sometimes ordinary, :P
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work,the curse of the racing class!!
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Offline Rossvickicampbell

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Re: Optional RM swingarm 77 ?
« Reply #5 on: June 16, 2016, 07:51:43 pm »
yeah - what is with the secret squirrel stuff re these swingarms - bugga me!
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Offline micko

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Re: Optional RM swingarm 77 ?
« Reply #6 on: June 16, 2016, 09:38:49 pm »
I seen guys with aftermarket alloy arms at CD12 on the weekend who were going to the Nats, wonder how they get on !
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RM370A RM250A RM125A RM125S YZ250A YZ125C XR75K4

Offline micko

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Re: Optional RM swingarm 77 ?
« Reply #7 on: June 16, 2016, 09:46:30 pm »
Where's the link please
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RM370A RM250A RM125A RM125S YZ250A YZ125C XR75K4

Offline LWC82PE

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Re: Optional RM swingarm 77 ?
« Reply #8 on: June 16, 2016, 09:55:35 pm »
The cable guide is the difference. C/C2 alloy just has wire loop screwed to s/arm. Optional B alloy has wire cable guide screwed to welded on tag on top of swingarm.

Aftermarket is fine if it was built/available pre Dec 31 1977
« Last Edit: June 16, 2016, 09:59:28 pm by LWC82PE »
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Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022
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