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Topics - rhyatt

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Singles / Wassell led headlamp bulb
« on: 16 March, 2024, 07:20:25 »
Hi all,
Has anyone tried one of these bulbs ?
I bought one to fit to my C15 with a 12v conversion.
Even though converted, there was not much charging left with everything turned on.
It seems that even though these bulbs are rated between 6v and 24v , they don't like the low end of that range.
I had a long and productive chat with a technical guy and it seems that the internal circuitry needs a decent voltage to keep it running.
When I checked my voltage at the back of the bulb, I had mid 9s low 10s.
I'd been fiddling with the bike so expected it to be down below 12v , but the standard bpf bulb seemed bright enough, .
When running the back of bulb voltage was high 13s as you'd expect and this new led bulb worked fine.

Just in case anyone has the same issue.
Earth's and connections etc were all fine.

2
Singles / SS80 12v using a WW10124W reg rec
« on: 10 March, 2024, 07:27:58 »
I have an SS80 that is have begun the 12v conversion by joining the (very dilapidated ) 3 wires into 2 at the stator.
It is now 2 wires and 12v
I have obtained by chance a Ww10124W reg rec which is a 3 phase unit , having 3 yellows .
The instructions say that it CAN be used on a 2 wire stator but don't actually show how to connect the 3 yellows onto 2 wires.
Is it a matter of leaving 1 yellow disconnected or double line it up with its yellow partner?
Many thanks in advance

3
Singles / SS80 oil grade
« on: 15 November, 2023, 06:39:36 »
Morning all.
I have a 1965 SS80, all the books and charts that I have advocate sae40 and 30 for the engine summer and winter respectively.
Did BSA ever advocate sae 20-50 please?
I was thinking of speed of oil flow when cold really, but I am aware that the SS80 has a roller big end.
Thank you for any thoughts.

4
Singles / Condenser question
« on: 08 June, 2023, 16:05:07 »
A theoretical question please.
If a bike eas on 6volts and the condenser installed.
If this bike is converted to 12v using the same condenser, will the higher voltage across the existing condenser damage it please?

5
Singles / C15 side points 1965
« on: 06 June, 2023, 14:08:29 »
Hi all,
Does anyone know if it is an easy conversion from the 4CA backplate to the 6CA backplate.
I can mount the condenser elsewhere then.
Thank you

6
Which BSA do you ride? / which BSA do I ride??
« on: 27 February, 2023, 16:53:05 »
I figured that I should introduce myself as I have posted things here AND benefitted from things here - sorry for about face!!

1 x D14
and 2 x D7

plus a fair bit of work on a pal's SS80

The D14 had a nice 1000 mile outing across Italy on the Moto Giro d'Italia
Both D7s have enjoyed multiple trips across Dartmoor on the Three Moors Runs and the June Jaunts
bot these runs are designed for tiddly bikes and great fun 500 miles and 300 miles respectively

7
Singles / C15 SS80 engine oil query
« on: 26 January, 2023, 17:29:21 »
Pretty much at the end of the project and want to get the right oil in the engine.
All the BSA books tell me she 40 monograde with which I'm happy to go
But I think I also saw sae 20-50 , is this beneficial in these bikes please?
Coming to eventually a bit warmer weather, roller big end and this plain timing side bush, do they prefer 40 or the 20-50 please?
Given the lubrication principles in its design but the advent of modern oils?
It's never going to be thrashed, but I want to keep it healthy inside
Thank you

8
Singles / C15 SS80 oil pump replacement
« on: 19 January, 2023, 16:39:40 »
Hi all,
Been working on my pal's SS80 with a lubrication issue.

When working on oil pumps on cars, I've always primed them, the C15 has a non return valve to stop oil drying down from the tank through the pump.
I'l prime both sides of the replacement  pump anyway , but will it pull the oil through this ballvalve OK on start up?

The scavenge side was the issue as the pick up pipe was damaged and sucking air rather than oil

Any other things to do on reassembly  please?
Thank you

9
Singles / 1965 SS80 starting issue
« on: 09 January, 2023, 17:25:16 »
Good evening,
My pal has a 1965 SS80 and I've been helping him work through countless things on it.
We're pretty much done now thankfully , but he can't get the hang of starting it!!

I show him the routine , up to tdc,  over the top , big swing and away.

But he experiences a small kick back as he eases it up to the (obviously the points open on the way up) , I said turn the key off until you're at the right spot , the key on and swing it then.

All bobweights, timing etc are fine. Once it's going its lovely.

Anybody else get these little kickbacks ? And your solutions please?

10
Singles / SS80 advance retard springs
« on: 03 January, 2023, 19:47:28 »
Hi all,
Side point ss80 and I think  that the springs are not pulling the bobweights right back to full retard.

I've had a look around for suppliers, can anyone help please?

The bike has a habit of kicking back as you ease it up to the when starting. When running it's fine, but I think the weights may not be returning to retard as they should

Thank you

11
Singles / C15 oil pressure relief valve spring
« on: 10 December, 2022, 19:27:07 »
Good evening,
Working on my pal's SS80 and cleaning out the oil ways.
I see the spring has a slightly larger diameter  at 1 end, which way round does the spring go 0lease , large diameter towards the ball or outwards please?
Thank you

12
Singles / BSA 250 SS80 1965 handlebars
« on: 17 November, 2022, 16:57:38 »
new member hi from Dorset

Whilst I am new to this forum I have been a member of the Bantam forum for a while now as I run 3 of them !! and participate in that forum.

This question is about the style/shape of the handlebars on a 1965 SS80 please? I am working on this bike at the moment

try as I might , I cannot find a definitive shape or style of the bars used on the SS80 - I have tried looking at BSA sales brochures for models of that year , but none quite answers the query.

Were they the same as the C15 but without the welded lugs? or were they lower to match the "sporty" image

The ones I have on the bike just don't seem right, they outer ends tip downwards and if I roll them around it doesn't seem to do the trick as far as looks and my wrists.

any guidance or pictures or stockist would be most grateful - thank you

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