RM125 A/B Optional Aluminium Swingarm

[Momus]

Can anyone direct me to a photo of the Pre78 legitimate optional aluminium swingarm that was available for the RM125 A and B?

Thanks, Marcus

[sleepy]

I've got the parts book drawing if that is any use. It is only listed as optional for the B model.

[John Orchard]

Here we go .......... ;-)

[Momus]

Here we go .......... ;-)

?

[Ted]

There’s no such thing?

[Momus]

I've got the parts book drawing if that is any use. It is only listed as optional for the B model.

Thanks Sleepy.

 If it shows the mount for the brake arm it would be very interesting.
Can you post a photo or send it to me PM please?

[bigk]

If you weld a torque arm mount on a C arm, you'll get pinned at scrutineering.....
K

[sleepy]

I've got the parts book drawing if that is any use. It is only listed as optional for the B model.

Thanks Sleepy.

 If it shows the mount for the brake arm it would be very interesting.
Can you post a photo or send it to me PM please?

Doesn't show the mount, only the top. My parts book shows the same pics as this one posted some time ago in 2013 and it seems Ted wasn't believing it then either.
http://forum.ozvmx.com/index.php?topic=28771.0
I have scanned it but getting picture to show here is a bit hard for me. I could Email it to you if you PM me your email.

An interesting fact about alloy swingarms. There was a batch of Alloy arms made to fit RM250/370A's here in Brisbane back in 1976. I had one on my RM250A. They were made by John Walmsley and Vern Grayson. Not sure how many were made but I'd guess 12. I'm not big on old photos but I'll try and find a picture of my bike from back then. A copy of one of those would be legal in Pre78 if one could be found to copy.

[sleepy]

I found a photo of my RM250A circa 1976/1977 with alloy swingarm fitted.
https://photos.app.goo.gl/LJd1Nbz4oQkBMeeWA

[Momus]

I've got the parts book drawing if that is any use. It is only listed as optional for the B model.

Thanks Sleepy.

 If it shows the mount for the brake arm it would be very interesting.
Can you post a photo or send it to me PM please?

Doesn't show the mount, only the top. My parts book shows the same pics as this one posted some time ago in 2013 and it seems Ted wasn't believing it then either.
http://forum.ozvmx.com/index.php?topic=28771.0
I have scanned it but getting picture to show here is a bit hard for me. I could Email it to you if you PM me your email.

An interesting fact about alloy swingarms. There was a batch of Alloy arms made to fit RM250/370A's here in Brisbane back in 1976. I had one on my RM250A. They were made by John Walmsley and Vern Grayson. Not sure how many were made but I'd guess 12. I'm not big on old photos but I'll try and find a picture of my bike from back then. A copy of one of those would be legal in Pre78 if one could be found to copy.

Thanks Sleepy.

[Ted]

Send me your mobile to me on 0407004473 and I’ll send you a pic of the only legal one here in Oz.
I don’t know why you want one as they are exactly the same weight as the original B steel arm.

[skypig]

Couldn’t you build whatever you want?
Like you could in 1977.

[Ted]

Yes you can, as long as it’s bits from a 75,76,77 model bike

[skypig]

Or built from scratch, like a DG/FMF/CH one would have been.

[sleepy]

You can only use period bits or replica's of period bits. That means you can manufacture a swingarm as long as it copy of something that was made back in the day. I would think you could make a replica of the locally made 250 arms and fit it to the 125 but not sure how close a 125 arm is to a 250.