Dynamo screws

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GOLDSTAR
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Posts: 2521
Joined: Thu Sep 11, 2003 1:00 am
Location: KENT UK

Re: Dynamo screws

Post by GOLDSTAR »

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
matchbart
Posts: 90
Joined: Sat May 06, 2017 3:17 pm
Location: north east

Re: Dynamo screws

Post by matchbart »

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
Andy51
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Posts: 742
Joined: Thu Mar 31, 2005 1:00 am
Location: BERKS UK

Re: Dynamo screws

Post by Andy51 »

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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