Dynamo adjustment sliding link bolt

[Rod1883]

Does anyone know the size and thread of the bolt (screw if that is the correct technical term?) that is fitted through the adjusting sliding link and is screwed into the dynamo front end bracket?

I'm fitting an original spec C39PV2 dynamo to the TR2 to replace a later type dynamo.

The bolt on this later type is a different size so won't fit the threaded end bracket of the C39PV2.

Also, should the bolt have a locking nut fitted to the end that protrudes through the dynamo end bracket?

Finally - do you know where I can obtain the required bolt (and nut)?

I'm not clear looking at the Moss catalogue whether their offering would be suitable for the earlier dynamo.

Thanks

[Fireman049]

I can't understand that people don't have a thread gauge in their tool kit?

 

Tom.

[Rod1883]

I can't understand that people don't have a thread gauge in their tool kit?

 

Tom.

...and today's prize for the most helpful post goes to.....

 

seriously though no, not everyone has a thread gauge.

 

Can anyone help me with the info?

[BlueTR3A-5EKT]

It could be 5/16 UNC or 8mm course or rarely now 5/16 BSW.

 

Even more unhelpful I suspect.

 

If none of the above fit....

 

You could consider drilling it out to 5/16 clearance and fitting a nut and bolt of the correct size (5/16 unf bolt with stiff nut)

 

Peter W

[RogerH]

Hi Rod,

I'll email you an image of a thread gauge. Do you want UNC or BSW.

 

Roger

[stuart]

Thread gauge isnt very helpful when trying to determine a threaded hole. I suspect your looking for 5/16UNC Rod.

Stuart.

[Rod1883]

popped up to my local old fashioned village garage this morning with the dynamo - and found a suitable BSW bolt.

Thanks for all the help.