Author Topic: Swingarm dimensions  (Read 2614 times)

Offline emilios

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Swingarm dimensions
« on: 09.11. 2015 20:29 »
Hi guys
Im in a tribsa project..in the begginig actually..i just start to collect parts
For now i have a A10 swingarm frame,TR6 unit engine and a trident twin lead front hub and A65 or A50 swingarm
So my question is: can i fit a swingarm from A65 on A10 frame?
Did anyone did it?
i cant find the dimensions of A10 swingarm to match them with my A65 ones..
if someone can help me with A10 dimensions would have been great..
Regards

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1956 BSA A10 Plunger
1954 BSA B31 Goldstar Replica
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Offline scotty

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Re: Swingarm dimensions
« Reply #1 on: 09.11. 2015 21:15 »
Emilios

The A10 had two different swing arms during its production life.

The early swing arm had a brake plate anchor point on the riders left to accommodate a single sided brake hub

The other swing arm had the brake plate anchor point on the riders right to accommodate a full width brake hub

Some clever forum member did these drawings with dimensions that I found useful

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Online Klaus

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Re: Swingarm dimensions
« Reply #2 on: 09.11. 2015 22:01 »
Emilios,

yes you can fit a A65 swing arm in an A10 frame.
I did this for a new race projekt.
I can shoot some pictures tomorrow.

regards Klaus
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Online Klaus

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Re: Swingarm dimensions
« Reply #3 on: 10.11. 2015 12:16 »
As promised the pictures.
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Offline cyclobutch

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Re: Swingarm dimensions
« Reply #4 on: 10.11. 2015 13:27 »
What advantage does the A65 swing arm bring - apart from if that's all you've got?
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Online Klaus

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Re: Swingarm dimensions
« Reply #5 on: 10.11. 2015 15:38 »
What advantage does the A65 swing arm bring - apart from if that's all you've got?


I ve got this raw frame, as unfinished project with a wrong build swing arm, some years ago.
So it was easier for me to get a complete one from an A65 to fit in.
This swing arm has no silentbushes as the A10 or Goldstar.
Its like a slide bearing, simple to work with.
And much cheaper and not so hard to find like original swing arms.

Cheers Klaus
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Offline emilios

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Re: Swingarm dimensions
« Reply #6 on: 10.11. 2015 18:40 »
Thanks to all for the replies..
Well if i can fit the A65 swing arm..i will
I just worry about the shocks..if they will be straight...and also if is the length is the same..
Now that i have the dimensions i will check the swing arm that i have..
My frame was too rusty and the frame numbers desapear..so i cant know which of the 2 frames i have..
But the brakes should be on the right side cause it has this spot for the rear brake cable..
So i have the late A10 frame..correct me if im wrong..
But if i will put the A65 swing arm i will still have to make changes on that cause the hub i will use is
the conical from trident..and the brakes are on the left side
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1956 BSA A10 Plunger
1954 BSA B31 Goldstar Replica
1970 Honda cb750K0 project
Cyprus

Offline jachenbach

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Re: Swingarm dimensions
« Reply #7 on: 11.11. 2015 00:40 »
Emilios,
   I don't know if it would be worth the shipping to Cyprus, but I have a couple extra swingarms. Not sure of the year, but I can check if you're interested. I expect shipping from USA could be expensive, but you can have one, no charge (except shipping) if it'll help.
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Offline emilios

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Re: Swingarm dimensions
« Reply #8 on: 11.11. 2015 18:10 »
Hi jachenbach and thanks for the help that u are offering..
I checked the A65 swing arm that i have but is more than 2cm longer and the shocks place again more than 2 cm closer to inside..
So i dont want to use that swing arm..the point now is that im close to buy a A10 swing arm from ebay..it will finish in 4 days..
So in case that i wont take it i will let u know..but thanks again.
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1956 BSA A10 Plunger
1954 BSA B31 Goldstar Replica
1970 Honda cb750K0 project
Cyprus

Offline A.t.d.c. 1.

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Re: Swingarm dimensions
« Reply #9 on: 03.12. 2015 19:22 »
Yes .I fitted a P/U. Spitfire swinging arm to a BB33 frame ,but it was to long .I do think you would be far better getting an A10 one ..Good luck ..
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