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Messages - Greenfield

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Singles / Re: C15 shock absorber top bolts
« on: 14 April, 2024, 09:59:37 »
Hi Ian
They should be 64-5048 which is 3/8" 26x 1 5/8"
They're at Tradeclassic bikes, ebay etc.

Pre War / Re: 'B' series girders
« on: 10 April, 2024, 07:36:39 »
Looking through old parts books, these links were fitted to a number of bikes, mainly lightweights, around the mid 30s.
I can't make out the piled arms, but above the part number is E1-3 if that makes sense to anyone.
Someone in the past has spent time and money on the bike, but when it came to sourcing hard to find parts, they gave up. These links are clearly hard to find.
I started checking the electrics and found a new voltage regulator. Instead of attaching the wires with hollow bullets, they were jammed in place with bits of wood! I'll say no more.
Happy days

Pre War / Re: 'B' series girders
« on: 09 April, 2024, 17:15:02 »
I'd be interested to know what girders are fitted to this B21.
Photos attached.

Pre War / Re: 'B' series girders
« on: 09 April, 2024, 13:18:39 »
Having busied myself with gearbox and electrics, on returning to the links and giving them a thorough clean, I've found the part numbers which are 24-5090 and 24-5095, which makes them the top links from a B30 - but still unavailable. Looks like I'm going to have some made.

Pre War / Re: 'B' series girders
« on: 08 April, 2024, 14:57:59 »
Don't worry Scifi, they are parallel.

Pre War / Re: B21 kickstart bushes
« on: 18 March, 2024, 16:07:25 »
I've drawn a complete blank with sourcing these bushes, can anyone recommend a machine shop that may be able to produce them?
Also, any thoughts on whether the bronze bush would be phosphorbronze or oilite?

Singles / Re: B33 electrical fuse query
« on: 16 March, 2024, 16:37:27 »
There's nothing wrong and something to gain with fitting two fuses, one for the lights and the other for the horn and brakelight. Depending on the bulb wattage you'll then be dealing with 10 to 15A per fuse and you won't risk 20A flowing through your wiring. Some bikes don't have a fuse for the horn and brakelight, which I learnt to my cost when a horn shorted internally.

Pre War / Re: 'B' series girders
« on: 16 March, 2024, 12:43:42 »
Cheers Alan, I think they may be parts 15-5240 and 15-5241 and a quick google shows that they might be available. I just need confirmation of the dimensions before ordering. There is 15 thou variation in the diameter of the pins, so with new links, I'm hoping that the play will be significantly reduced so that bushing is not necessary.

Pre War / Re: 'B' series girders
« on: 15 March, 2024, 19:17:53 »
Well, things are not quite what I was expecting. After over 40 years, things happen.
I think that the top links of a B21 are plain without pins. Mine have pins. One is threaded and the other not threaded. The centres are 3 3/8", the pins are just under 1/2" diam, 1 5/8" long with a 5/16" hole. Can anyone identify this? Is it from an M20?

Pre War / 'B' series girders
« on: 15 March, 2024, 15:19:30 »
My B21 restoration continues. Unfortunately so far very little is being restored and there are more and more parts needing restoration. So far I've drawn a blank with the kickstart bushes, so I may be looking for someone to make them.
Whilst working on the front brake I noticed a lot of movement in the top girder link. The parts book lists fork bushes 65-5078. Can anyone advise whether these are associated with the top link of the late '30s 'B' series?
Many thanks in anticipation.

Pre War / Re: B21 kickstart bushes
« on: 12 March, 2024, 16:11:34 »
Having bitten the bullet and removed the inner cover, it would appear that the problem lies in the bronze bush inside the kickstart quadrant which I think is part number 65-3116. Can anyone suggest a supplier and how to extract the old one. there's nothing to get hold of. I notice that the parts book lists a quadrant with bush fitted, so that says something! There's also the quadrant oil seal and cover gaskets that are probably obsolete. No gaskets were fitted but I can make a couple of these.

Pre War / B21 kickstart bushes
« on: 11 March, 2024, 16:11:07 »
As you may gather, I'm getting stuck into getting a B21 deluxe up and running. There is distinct play in the kickstart and in my innocence I removed the gearbox outer cover expecting to find a bush for renewal. There was just a bush for the gear lever which is good. The parts book lists kickstart quadrant bush 65-3116 and cover bush 65-3134. Are these both behind the inner cover?
There was no outer cover gasket, just sealant. Am I correct in thinking that there should be gasket 65-3022? All good fun.

Pre War / Re: B21 speedo drive
« on: 09 March, 2024, 19:53:20 »
Thanks Ron, I'll see what I can cobble together. Are we looking at grease or oil to lubricate the gears?

Pre War / B21 speedo drive
« on: 09 March, 2024, 16:22:27 »
I have a rather sad looking speedo drive from a B21 in need of tlc. It has a cork to prevent dirt getting into the mechanism. Presumably there was a removable cover originally to allow access to the gears for lubrication. I anyone able to shed any light on the subject?

Pre War / Re: B21-B26 parts
« on: 06 March, 2024, 13:06:54 »
That's a shame. I contacted Drags to see whether they did one, but they just have the standard parts lists. They do however have individual exploded diagrams on the website for girder forks for example from the late 30s.

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