Author Topic: dynamo belt tension  (Read 854 times)

Spitfiremk9

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dynamo belt tension
« on: 24.03. 2013 16:49 »
Anyone help me remember how much play there should be in my dynamo belt ,i've just looked at it and there was way too much and so have adjusted to approx 1/4" up and down in the middle top run, is this enough or to tight, Regards BobH.

Online chaterlea25

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Re: dynamo belt tension
« Reply #1 on: 24.03. 2013 17:00 »
Hi Bob
What kind of belt drive is fitted?? vee or toothed?

John
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Offline warmshed

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Re: dynamo belt tension
« Reply #2 on: 24.03. 2013 18:49 »
Depends on what one you have fitted. The one made by Dynamo regulators .com (who make the DVR")  say "Correct tension is such that it is easy
to turn the belt at the middle of the lower run by about 45 degrees each way."

Their full instructions are here http://www.dynamoregulators.com/documents/belt_drive_data.pdf

Spitfiremk9

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Re: dynamo belt tension
« Reply #3 on: 24.03. 2013 19:23 »
Hi John, vee , from sean miller , advertises in the BSA "star " but for life of me can't find paperwork Thanks everyone BobH

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Re: dynamo belt tension
« Reply #4 on: 24.03. 2013 23:53 »
Hi Bob
Rekon a 1/4 in or so would do ???

John
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Offline Topdad

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Re: dynamo belt tension
« Reply #5 on: 25.03. 2013 11:16 »
Thanks John, it actually from Hawker electricals ,Regards BobH.
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Offline mayes

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Re: dynamo belt tension
« Reply #6 on: 25.03. 2013 18:53 »
John no more than 1/4 play
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Offline Smithgd

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Re: dynamo belt tension
« Reply #7 on: 01.04. 2013 15:32 »
If I am reading this correct - The toothed belt is going to be set to run pretty tight. I think mine might have been too loose and the belt failed rather soon.
Any on had any experience with the stardard chain driving an Alton alternator??