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Why would you

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Why would you

Post  Sgtbiro on Fri Jul 14, 2017 8:30 am

HI i was wondering if any one has seen this before and knows why it has been done. this is  the barrel of my 1960 cruiser 80 and someone in the past has cut up what looks like an old fan belt and wedged a piece between each of the fins on the barrel why please.

Thanks confused.

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Why would you

Post  chamberslane on Fri Jul 14, 2017 9:08 am

Probably to try to replicate the MZ system, in theory it makes the engine quieter.

Patrick.
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Re: Why would you

Post  Mollbhan on Fri Jul 14, 2017 9:10 am

Hi Sgtbiro, Yes I have seen this before some bikers used to do this back in the 60s the theory was that wedging rubber between the fins would stop them vibrating and cut down on engine noise,I have no idea whether it made any difference. I seem to recollect that Honda produced some bikes with wedges like this factory installed.
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Re: Why would you

Post  Sgtbiro on Fri Jul 14, 2017 9:41 am

chamberslane wrote:Probably to try to replicate the MZ system, in theory it makes the engine quieter.

Patrick.
Hi Patrick thanks for the quick reply i will have to give it a try when i get my bike running again,
Cheers Kevin.

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Re: Why would you

Post  Sgtbiro on Fri Jul 14, 2017 9:43 am

Mollbhan wrote:Hi Sgtbiro,  Yes I have seen this before some bikers used to do this back in the 60s the theory was that wedging rubber between the fins would stop them vibrating and cut down on engine noise,I have no idea whether it made any difference. I seem to recollect that Honda produced some bikes with wedges like this factory installed.
Hi Mollbhan thanks for the quick reply i will have to give it a try when i get my bike running again,
Cheers Kevin.


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Why would you

Post  keith.hodgenia on Fri Jul 14, 2017 2:12 pm

On some bikes the fins resonate at certain revs, I think they called it "ringing" the rubber wedges were to stop it, I imagine it could even lead to metal fatigue if it were severe. I've only seen it an ally barrels in the past. Keith.

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Noise

Post  kerabo on Fri Jul 14, 2017 4:16 pm

It can make the world of difference. My Marcelle barrel made more noise that the rest put together .putting rubber blocks in the fins made a hell of a difference.
I wouldn't think one of these would be very bad though .
Ken
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Re: Why would you

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