Swingarms

Does anyone have the definitive answer to SS swingarm weights?

Steel
Early Aluminium
1000SS Later style Aluminium

Annoyingly I've had all 3 around me in the last year or so but not weighed them, and don't want to strip the one out of my 1000SS just to weigh it.

Thanks.

 

I think after a bit of Googling I've found some confirmed numbers.

400/600/750/900SS Steel Swingarm - 4.9Kgs Bare
900SS Aluminium Swingarm - 3.6Kgs Bare
1000SS Aluminium Swingarm - 4.05Kgs Bare

As has been mentioned many times the 1000SS swingarm is supposedly stronger, than the older 900SS Aluminium one, and less prone to cracking where it clamps around the pivot bolt that connects it to the engine.
So it's a sought after upgrade on the earlier bikes, but there are very few around.

I'm lucky to have one in my 1000SS that I've fitted with 900SS/SL bodywork and tank:



Who wants to take a guess on the weight of this bad boy which is incredibly rare:



I'm thinking of sticking it in the above bike as it would suit the older look more.

 

I've weighed it with the wheel spindle in the image, and it's 5Kgs exactly, so a heavy old lump, and not exactly an upgrade in that respect.

I've also found a couple of old EBAY auctions where they've sold for @£500, which would put a lot of petrol in the bike!

A couple more images:





Another interesting thing, which I'm actually not too sure about is the chain adjustment mechanism:

From this side it looks quite normal:


But from the other side it can be seen that the threaded bar is held captive by a couple of hammered in Roll pins that stick out ready to catch a finger when cleaning:

 

That's better:





Happier to fit it now

 

I always go M8 if I can.
I even have some M10 in my workshop, but decided not to use them.

On this occasion I decided not to do the welding myself, just turned the bushes up on my lathe and popped a flat on them in my Mill.
I may sell the swingarm if I decide I don't like it, and my TIG welding consistency has gone to pot over the last couple of years due to mobility issues in my hands, which is annoying the hell out of me, but as you can see I have a good work contact who'll do me a favour.

 

I've decided now that I really like the JMC arm in the 1000SS Mongrel:



But here's a question, are the 1000SS swingarms still as sought after as they once were for fitting to other SS variants?

Apart from the one that came out of the Mongrel, which isn't going anywhere, I do have another 1000SS swingarm that needs a bit of a clean up, and I'm wondering about selling it.
If it's not worth a lot I'll keep it for another project, but if it will go some way towards the cost of a pair of tyres I'd probably sell it.