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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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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: 12,324
Central Virginia
Lannis Online content

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Lannis  Online Content

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Joined: Jul 2001
Posts: 12,324
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'm like super lazy today. It's like normal lazy, but I'm wearing a cape.
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: 3,391
Orygone
Boomer Online content

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Boomer  Online Content

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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: 12,324
Central Virginia
Lannis Online content

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Lannis  Online Content

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Posts: 12,324
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'm like super lazy today. It's like normal lazy, but I'm wearing a cape.
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
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FoxDK  Offline OP
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Posts: 166
Denmark

Thank You! smile

I will try that today.


Moderated by  Allan Gill, Jon W. Whitley 


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