Author Topic: Dynamo chain slack?  (Read 2016 times)

Offline ShaunMac

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Dynamo chain slack?
« on: 25.03. 2013 13:18 »
Hi guys,

Took the timing cover off today and glad I did as the grease that was in with the dynamo chain was rather contaminated.
Q1 - Is it meant to be packed with grease?
Q2 - Is there a way of adjusting the chain as it is very loose and appears to have been catching the casing.
Q3 - Some oil came out. I presume this would just be residual from the pump area or does it mean I've got a leak on the oil pump?

Thanks,
Shaun
61 Super Rocket swing-arm

Offline ShaunMac

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Re: Dynamo chain slack?
« Reply #1 on: 25.03. 2013 13:57 »
A bit of searching and the Haynes has given me the answers.
Thanks
61 Super Rocket swing-arm

Offline stu.andrews

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Re: Dynamo chain slack?
« Reply #2 on: 25.03. 2013 14:04 »
Hi
When adjusting the dynamo chain be very careful as, when the dynamo strap is tightened, this will slightly turn the dynamo, thereby tightening the chain even more. This will then ruin the chain, sprockets & dynamo bearing on the drive side. 'Tis a bit of trial & error & watch for tight spots in the chain. A semi liquid grease is good as this will thin further when the engine gets hot.
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Offline ShaunMac

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Re: Dynamo chain slack?
« Reply #3 on: 25.03. 2013 16:13 »
Thanks. I've got 1/4 inch slack as a figure. At the moment it's about 1 1/2 which is why it's been cutting in.
61 Super Rocket swing-arm

Offline Goldy

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Re: Dynamo chain slack?
« Reply #4 on: 25.03. 2013 17:44 »
Shaun
If you do a search on the forum you will find info about the types and amount of grease.
The bottom chamber will be full of oil when you remove the cover.
All the best Goldy
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Offline chicago

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Re: Dynamo chain slack?
« Reply #5 on: 25.03. 2013 23:54 »
Hi fella, I picked up a really handy tip off the forum when replacing the grease (muskrats or bsa bills idea I think ?) put the new grease in a Jiffy bag, put it in the freezer overnight and before your about to put the timing cover back on get the grease out of the freezer, snip the corner of the bag and pipe the grease in, that way the grease doesn't just run straight onto the floor and on your new gasket. I made up my own grease (slightly runny) by mixing straight 40 oil and grease. I think if you use standard grease (ie thick) the dynamo chain cuts a track thru it and doesn't lubricate the chain. All the best, Chicago.
Location: north west madchester.
Preferred location: somewhere warm and dry.
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Offline ShaunMac

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Re: Dynamo chain slack?
« Reply #6 on: 26.03. 2013 08:12 »
Cracking idea! I used to hate filling power narrow beds with grease as it always slowly crept everywhere!
 *smile*
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Offline bsa-bill

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Re: Dynamo chain slack?
« Reply #7 on: 26.03. 2013 09:48 »
good idea, unfortunately not mine must be Musky

Both my bikes on belt drive, now I do know a fella that drove a small Cat skid shovel who greased the alternator/fan belt to stop it squealing, it certainly did  *eek*
All the best - Bill
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1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline muskrat

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Re: Dynamo chain slack?
« Reply #8 on: 26.03. 2013 11:57 »
 Not mine either. ???? Had toothed belts on both mine for a few years now. Back when running a chain I just used common old black (or was it red) grease. Went on easy and when hot it softened enough to cover the chain.
Cheers
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Offline chicago

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Re: Dynamo chain slack?
« Reply #9 on: 26.03. 2013 12:17 »
Hi bill, muskrat. Memory like a sieve me  *conf*,sure it was on here I read about freezing the grease. I've converted to a srm toothed belt as well but was told by the guy from srm to still use grease as it helped to keep the belt from over heating ???. All the best fella's. Chicago
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Offline bsa-bill

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Re: Dynamo chain slack?
« Reply #10 on: 26.03. 2013 14:05 »
Quote
guy from srm to still use grease as it helped to keep the belt from over heating

Well not as silly as it may sound with a toothed belt, I know my chamber filled with oil due to a wrongly orientated bush scroll (posh way of saying I screwed up) and the belt ran just fine with oil coming out of the dynamo mounting flange.
Th guy I referred was lubing a vbelt ? 
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline ShaunMac

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Re: Dynamo chain slack?
« Reply #11 on: 26.03. 2013 16:10 »
Well I got the dyno off today and cleaned all the contaminated grease.
The dyno has had a bad lick of paint at some time so cleaned that up and primed it for a fresh coating.
The end cap has been damaged at some time so I need to replace it.
Any recommended suppliers?
Also, I've seen a rubber cap for over the wires where they go into the dyno. Do these fit?

Cheers,
Shaun
61 Super Rocket swing-arm

Offline bsa-bill

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Re: Dynamo chain slack?
« Reply #12 on: 26.03. 2013 16:26 »
Quote
Also, I've seen a rubber cap for over the wires where they go into the dyno. Do these fit?

yes they pull over the fancy shaped insulating piece that hold the wires, sorry can't recall where I got mine but got both the rubber and the insulator bit same place
What do you call that stuff again it's not mica is it
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline Topdad

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Re: Dynamo chain slack?
« Reply #13 on: 27.03. 2013 14:47 »
That'll be tufnell ,Bill regards bobH.
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Offline a101960

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Re: Dynamo chain slack?
« Reply #14 on: 27.03. 2013 16:21 »
Quote
What do you call that stuff again it's not mica is it
Bill, it's called paxoline