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D1 plunger rear sprocket
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Colin Thorne
Cirencester
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June 30, 2020 - 4:31 pm
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Gentlemen, l have a D1/1953 plunger, need to replace the rear sprocket, is riveting necessary or can they be substituted with bolts? 

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iain govan
exmouth
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June 30, 2020 - 8:49 pm
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Hi, I’ve used bolts when fitting mine. I think there was a thread recently that said to make sure the bolt is a good fit in the hole and that it is a bolt and not a machine screw that has thread all the way to the head. Hope that helps 
  

1950 D1 OSV 323 on and off the road, some of a 1959 triumph T20 on the bench

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cocorico
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June 30, 2020 - 8:55 pm
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Yes, it's been discussed before (hasn't everything?), but the basic answer is as iain says - if you use bolts as opposed to screws it should be fine, just make sure they are low profile heads.

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Colin Thorne
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July 1, 2020 - 8:45 am
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Thanks guy's, will go down the bolt Road. 

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Blue Heeler
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July 1, 2020 - 12:27 pm
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The correct grade Loctite should take up any but the worst hole wear...has for me on various bikes...or metal filler if more worn. Bolts nice  & tight obvs.

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Number6
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July 2, 2020 - 12:33 am
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Can anybody actually show us bolts with the correct amount of plain shank and where to buy them from?

Mike H --

Murphy's 4th law of motion states that any small object that is accidentally dropped will immediately hide itself under a larger object.

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BonesCDI
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July 2, 2020 - 12:37 am
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Drill out sprocket and hub holes to 1/4". Use 1/4" UNF grade 8.8 HT bolts with flat and spring washers.

We've never had an issue.

Bones

Running and project bikes from 1912 -2005..........She hasn't said stop yet.........

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cocorico
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July 2, 2020 - 7:15 am
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Number6 said
Can anybody actually show us bolts with the correct amount of plain shank ...

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Number6
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July 2, 2020 - 1:55 pm
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Why is that a silly question? I'm assuming others have done this why can't they just tell someone else who hasn't. Well Bones has. However I've established (by measuring) the plain shank cannot be less than 6 - 7mm, that is if you've got the sprocket I have

Mike H --

Murphy's 4th law of motion states that any small object that is accidentally dropped will immediately hide itself under a larger object.

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