Author Topic: Grease in timing cover for dynamo chain ?  (Read 3365 times)

Offline Stephen Foster

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Grease in timing cover for dynamo chain ?
« on: 27.09. 2012 08:50 »
Im just about to fit the timing cover & am a bit unsure about 3 things ?
 1/ How tight should the dynamo drive chain be ?

2/ Ought the section be packed with grease ?

3/ Which type or brand of grease ?

Thanks in advance ,

Steve ...
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Offline stu.andrews

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Re: Grease in timing cover for dynamo chain ?
« Reply #1 on: 27.09. 2012 09:09 »
Allow about 1/4 inch play on the chain but be careful as, when you tighten the dynamo clamp, the chain will tighten. Also press the dynamo hard against the inner cover to allow the cork to seal. Yes, pack the volume with grease but not too much. A light grease that will become semi fluid when hot is ideal.
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Online Billybream

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Re: Grease in timing cover for dynamo chain ?
« Reply #2 on: 27.09. 2012 10:11 »
Hi Steve. Stu,s reply is spot on, not to much written on grease and quantity, the 1/4" play should be in the middle of the chain, and recheck after tightening, as a slack chain can easily damage the casing.
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Offline iansoady

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Re: Grease in timing cover for dynamo chain ?
« Reply #3 on: 27.09. 2012 13:28 »
I must say I've always wondered why so much grease is specified as once the chain carves a path through it I can't see how the rest can lubricate anything?
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Offline a10gf

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Re: Grease in timing cover for dynamo chain ?
« Reply #4 on: 27.09. 2012 13:46 »
Quote
much grease is specified as once the chain carves a path through it

Yes, I have seen this. I believe a good dose of drivechain lubricant (from spraycan) is better. Will penetrate and stick, and stay on\in the chain.
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Re: Grease in timing cover for dynamo chain ?
« Reply #5 on: 27.09. 2012 15:43 »
I always apply a lot of grease together with some heavy Engine Oil, this is so the lower run of the chain dips into the mix also the grease being flung around creates an inner seal as well as dripping onto the chain. I do the same with gearboxes and it works quite well.
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Offline A10Boy

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Re: Grease in timing cover for dynamo chain ?
« Reply #6 on: 27.09. 2012 16:20 »
The thing is most people use a high melting point grease, that is the one that carves a path and then doesn't lub the chain. As has been said, use a low melting point grease then it will soften and slide down to the drive wheel and chain.

Better still, clean it out and fit a belt kit. I have fitted the 15mm wide one from Dynamo regs and it works a treat.
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Offline Goldy

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Re: Grease in timing cover for dynamo chain ?
« Reply #7 on: 27.09. 2012 17:56 »
As the chain is totally enclosed it is in the perfect situation, so as has been said, once lightly lubricated that's it.
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Online KiwiGF

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Re: Grease in timing cover for dynamo chain ?
« Reply #8 on: 28.09. 2012 07:10 »
Sorry probably  being dum here but I had a look in super crap and ripco and did not find a low melting point grease it seems a low melting point is not something that they advertise as a "good" feature?

As Im finally getting close to putting my engine back together this is something I also would like to get right eg what grease to use.

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Offline BSA_54A10

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Re: Grease in timing cover for dynamo chain ?
« Reply #9 on: 28.09. 2012 12:43 »
Google "liquid grease" .
most of them are fairly well the same.
Find your favourite brand then ask them where it is stocked.
Usually it will be a specialist bearing shop as it is usually used to lubricate bearings.
I am currently running Castrol in the M20 but prior to that it was Penrite.
In both cases it had to be ordered in.
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Offline iansoady

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Re: Grease in timing cover for dynamo chain ?
« Reply #10 on: 28.09. 2012 13:36 »
It's used in some Land Rover front swivel joints so available from LR specialists.

I still can't see why you need so much for a tiny little chain in a perfect environment with hardly any load on it.
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Offline Goldy

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Re: Grease in timing cover for dynamo chain ?
« Reply #11 on: 28.09. 2012 14:17 »
BSA service sheet number 208 says apply 1/4 lbs of light grease. BSA obviously were not particularly bothered about the type of grease used, so I don't think that you need to be.
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Offline Topdad

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Re: Grease in timing cover for dynamo chain ?
« Reply #12 on: 28.09. 2012 21:22 »
Hi Stephen, i've used both chain and belt systems. like the belt but never had any problems with the chain only changed when dynamo uprated to 12v and wanted a higher ratio. Although I know realise from the sensible comments about HMP grease ,which i used , wasn't the best, regards BobH
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Online KiwiGF

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Re: Grease in timing cover for dynamo chain ?
« Reply #13 on: 28.09. 2012 22:48 »
Hi good point ref the land rover grease I actually have some as I have a 96 discovery in need of some tlc, it's sort of a mix of oil and grease said to be 1000 grade by some, it lubes the front cv joints and" king pins"

Called One shot swivel grease (cos it cannt be drained out of the swivel once you replace your sae90 with it) you can buy it expensively from land rover dealers or aftermarket equivalent is available I bought mine from the uk from "Paddock Spares" a uk based land rover parts specialist and it's cheaper to get it from them and freight it to nz than buy it locally- which is plain silly!

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1956 A10 Golden Flash (1st finished project)

1949 B31 rigid “400cc hot rod” (2nd finished project, + favourite bike)

GL1800 Goldwing, well, the wife likes it

KTM 950 ADV, cos it’s 100% nuts

1952 Armstrong Siddeley Whitley for rainy days (with wife)

Online bsa-bill

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Re: Grease in timing cover for dynamo chain ?
« Reply #14 on: 29.09. 2012 11:55 »
Lots of machinery these days use a liquid grease/lubricant, I'm not too sure how you would keep it in place until you got the outer case on, lay the bike on it's side I suppose but then I'd have to wait for a mate to come along to get it back up again *sad2* 
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All the best - Bill
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