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A50 vs A65 Swing Arm Length #296090
01/27/10 3:40 pm
01/27/10 3:40 pm
Joined: Aug 2002
Posts: 690
Carmel, CA
D
Doc_dup1 Offline OP
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Doc_dup1  Offline OP
BritBike Forum member
D

Joined: Aug 2002
Posts: 690
Carmel, CA
A friend of mine has a good collection of BSA parts and he recently went through them looking to assemble an A50 project. While he was doing that, we noticed that he had two differnt types of swing arms. One style was 2" shorter that the other. Is the A50 arm shorter than the A65?

Thanks,
Doc


Doc

Mostly Triumphs with a few BSA's a Norton, and two BMW's

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Re: A50 vs A65 Swing Arm Length [Re: Doc_dup1] #296095
01/27/10 4:09 pm
01/27/10 4:09 pm
Joined: Aug 2001
Posts: 5,099
Stone Creek OH USA
R
Rich B Online happy

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Rich B  Online Happy

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R

Joined: Aug 2001
Posts: 5,099
Stone Creek OH USA
The early closed loop frames had a shorter swing arm than the bulk of the open loop frames. Those swing arms are set up for fully enclosed chain guards (mostly) and RH brake anchor.

I believe some early open loop frames may have had a shorter swing arm as well. I have read some references that early Cyclones had a shorter swing arm, possibly a few early Hornets as well.


Life is too short to drink cheap, bad beer.
Re: A50 vs A65 Swing Arm Length [Re: Rich B] #296164
01/27/10 10:34 pm
01/27/10 10:34 pm
Joined: Aug 2002
Posts: 690
Carmel, CA
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Doc_dup1 Offline OP
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Doc_dup1  Offline OP
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Joined: Aug 2002
Posts: 690
Carmel, CA
Thanks, I recently read a magazine article on the A50 that said they all had the shorter arm. In the same article, they said a few other things that I know to be incorrect so I was not sure if I believed them. Your explanation makes a lot more sense. My friend has two early frames which would explain why he has two short swing arms.

Thanks,

Doc


Doc

Mostly Triumphs with a few BSA's a Norton, and two BMW's

Re: A50 vs A65 Swing Arm Length [Re: Doc_dup1] #296569
01/30/10 1:47 am
01/30/10 1:47 am
Joined: May 2004
Posts: 3,821
Sydney Australia
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BSA_WM20 Offline
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BSA_WM20  Offline
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Joined: May 2004
Posts: 3,821
Sydney Australia
If a magazine article is written by someone with technical qualifications in a area related to the topic then it has a 90% chance of being correct.
IF it is written by some one with journalism qualifications then it has a 50% chance of being .
If it is written by a company hack then it has a 1% chance of bearing some sort of obscure relationship to the truth.


Bike Beesa
Trevor

Moderated by  Allan Gill, Jon W. Whitley 


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