Tank conversion to bayonet cap

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Oyster 49
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Joined: Tue Oct 26, 2010 6:55 pm
Location: Derbyshire, UK

Tank conversion to bayonet cap

Post by Oyster 49 »

I've had this oddball steel tank on the shelf for some time, with a non seagull screw cap, the plan is to convert it to a bayonet cap. I've no idea about the history of the tank, but it does seem to be a seagull one. I've now got all the parts I need to do it. A NOS Ceandess filler neck and also new cap from Ceandess which are still made in Wolverhampton, since 1924. I drilled the cap and made a new vent valve some time ago, as part of a small batch, including some dummy valves which look identical to a functioning version.

The same guys who made the original seagull parts, and also fitted to many classic british motorcycles, lawnmowers, cars etc.

https://ceandess.online/
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Hugz
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Re: Tank conversion to bayonet cap

Post by Hugz »

Are you going to braze it on?
Horsley-Anarak
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Re: Tank conversion to bayonet cap

Post by Horsley-Anarak »

I would soft solder it, should be strong enough.
Or perhaps low temp silver solder https://www.cupalloys.co.uk/low-temp-silver-solder/
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Oyster 49
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Re: Tank conversion to bayonet cap

Post by Oyster 49 »

My first thought was to soft solder it, I’ve got a nice small nozzle to get the heat just where it’s needed. I’m not sure what the steel is like under the thick paint though. It will be a while before I get to it. Just getting parts together at the moment.
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Charles uk
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Re: Tank conversion to bayonet cap

Post by Charles uk »

Your first task should be find out how the previous neck was held in, that might limit your choices.
Make it idiot proof and someone will make a better idiot.
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Oyster 49
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Location: Derbyshire, UK

Re: Tank conversion to bayonet cap

Post by Oyster 49 »

The previous neck is thinner, so I’ll be able to just cut it out and then machine a hole to fit the new neck perfectly I hope 8)
african imp
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Re: Tank conversion to bayonet cap

Post by african imp »

I had a restoration to do on a total wreck of an engine, the petrol tank had no cap but someone had tried to fit the bayonet type, off a radiator no doubt.

I had an egineer make a new neck up for me.
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