Dynamo screws

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Re: Dynamo screws

Postby GOLDSTAR » Thu Jun 14, 2018 9:09 am

8 BA are even smaller, I lost one from the Norman Nippy lighting switch so had to make a replacement, so pleased with the result I made another :beer: kind regards

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Re: Dynamo screws

Postby matchbart » Wed Jun 20, 2018 3:22 pm

Since my primary chain detached itself I have started to take the whole lot off,to repair the screw holes, but can`t find the correct size spanner/socket/box to go onto the recessed dynamo sprocket nut to get it undone , it`s countersunk and there is not a lot of free space around it, looks like i will have to turn down a socket to fit, (1/2 af is too small) however i don`t think it is the correct dynamo, does anyone have a suggestion as to what size the nut could be please ?

The beamish `Trial` stops at Allenheads but it was the reliability run on Sunday

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Re: Dynamo screws

Postby Andy51 » Thu Jun 21, 2018 7:43 pm

Hi, my Lucas E3N Dynamo uses 2BA c/s screws to hold the bearing retainer plate, causing me some confusion until I realised a PO had fitted them - they looked neat and worked, so if your 5BA screwholes are knackered, going larger seems a reasonable thing to do. Andy

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