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Size of black line and timing chain tight spot

Submitted by ian_bradley on Sun, 18/08/2013
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Can anyone conferm the size of the black painted line round the tank of a 1949 inter ? Also the timing chain has a huge difference between slack and tight.do I need a new chain? ps carnt seem to upload any photos .I am a simpleton on computers please help. Also how do I go about redgerstering a 1932 inter frame with no log book ?I have a 1932 CS1 bottom end which I would like to put in it as its the same year ,is it that hard?

many thanks Ian

Submitted by david_cooper on Mon, 19/08/2013

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If there is a 'huge difference between slack and tight' - are both the sprockets concentric? The length of the chain is a fixed value no matter how the engine is rotated even if it has stretched a bit.

It might be original sin. Or a shaft might be bent?

Submitted by robert_tuck on Mon, 19/08/2013

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The pull on the chain by the action of the valve springs may be giving a false impression, where it seems tight pull a spanner on the cam sprocket nut to see if slack can be gained against the action of the cam.

Submitted by ian_bradley on Tue, 20/08/2013

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Previously paul_gooch wrote:

Ian, the best advice that I have seen on the issue of paintiong tanks is from George Cohen. Follow this link and read item 9 on the list.

http://www.norton.uk.com/expert.htm

Paul

Thanks paul.Found in Roy Bacon's book 1 1/4 inch for the black line.(As far as I can make out) seems to be the case.

Submitted by ian_bradley on Tue, 20/08/2013

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Previously robert_tuck wrote:

David,Your right!!, Ian, never mind about the missing cylinder ,one is enough for most folk.

thanks lads

Found that the platform the mag dino sits on is bowed,so have put shim steel packing between .It's worked a treat.

Ian

 


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