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Tightening up dynamo chain? BSA A10 #532563
03/12/14 5:07 pm
03/12/14 5:07 pm
Joined: Dec 2013
Posts: 166
Denmark
F
FoxDK Offline OP
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FoxDK  Offline OP
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F
Joined: Dec 2013
Posts: 166
Denmark

Hallo,

Today I had the timing cover pulled of my BSA A10 Golden Flash from 1960.

I noticed that the chain to the dynamo is a bit loose. How do I tighten this chain up?

Regards from Denmark, Frederik smile

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Re: Tightening up dynamo chain? BSA A10 [Re: FoxDK] #532570
03/12/14 5:48 pm
03/12/14 5:48 pm
Joined: Jul 2001
Posts: 12,829
Central Virginia
Lannis Offline

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Lannis  Offline

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Joined: Jul 2001
Posts: 12,829
Central Virginia
I just learned how to do this VERY thing in my shop last night!

You loosen the clamp ring that holds the dynamo in place, rotate the case of the dynamo until the chain has about 6 mm of play up and down in the middle of the run, and tighten down the clamp. The dynamo is mounted "eccentrically" to the case and moves in and out as the case is rotated in place. Don't let the dynamo move away from the cases as you tighten back up, make sure it's pressed right up against it ...

Lannis


I stopped believing for a little while this morning. Journey is really going to be upset.
Re: Tightening up dynamo chain? BSA A10 [Re: FoxDK] #532581
03/12/14 7:42 pm
03/12/14 7:42 pm
Joined: Feb 2011
Posts: 3,475
Orygone
Boomer Offline

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Boomer  Offline

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Orygone
Lannis,

Did you get it on the first try? clap


Bill B....

Last edited by Boomer; 03/12/14 7:42 pm.

Boomer
Re: Tightening up dynamo chain? BSA A10 [Re: Boomer] #532614
03/12/14 9:56 pm
03/12/14 9:56 pm
Joined: Jul 2001
Posts: 12,829
Central Virginia
Lannis Offline

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Lannis  Offline

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Joined: Jul 2001
Posts: 12,829
Central Virginia
Originally Posted By: Boomer
Lannis,

Did you get it on the first try? clap


Bill B....


I did, actually. I could tell that chain tension was going to change as I tightened up the clamp, so I "wedged" the dynamo in place, made sure the tension was where I wanted it, and then tightened the clamp down .... Otherwise there would be a couple of "hit and miss" tries!

Lannis


I stopped believing for a little while this morning. Journey is really going to be upset.
Re: Tightening up dynamo chain? BSA A10 [Re: FoxDK] #532662
03/13/14 9:37 am
03/13/14 9:37 am
Joined: Dec 2013
Posts: 166
Denmark
F
FoxDK Offline OP
BritBike Forum member
FoxDK  Offline OP
BritBike Forum member
F
Joined: Dec 2013
Posts: 166
Denmark

Thank You! smile

I will try that today.


Moderated by  Allan Gill, Jon W. Whitley 


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