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1935 Cruiser

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1935 Cruiser

Post  Maurice on Tue Oct 25, 2016 3:26 pm

My restoration is nearing completion but that last 5% is elusive.
I would welcome any advice on why I cannot start the engine and keep it running. The only way it will start is by flooding the carb and then kicking it over with full throttle. The position of the mixture control seems to make no difference. Having kicked it over it will run, still with full throttle, at a fast idle for about half a minute. This procedure can be repeated (without further flooding) over and over. Releasing the throttle immediately stops the engine. Help please.

Less urgent does anyone have a side stand for this bike or be able to send me a drawing so that I can make or get one made.

Maurice

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Join date : 2010-05-08

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initial thoughts

Post  piston 197 on Tue Oct 25, 2016 4:21 pm

It sounds like it is too weak a mixture, if it will only start with flooding and throttle held wide open ? This suggests that the needle length is too long ? You are already richening it up by flooding and further richening it up by having the throttle open ( needle at furthest out position.
The shorter the distance between the needle tip and the bottom of the slide the richer the mixture will be.
Yours sounds as with a small throttle opening the needle is shutting the fuel off almost completely ?
Is it a Villiers or Amal carb ? both were used on the FB Cruiser, do you have a choke on the carb for cold starting ?

JH
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piston 197
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1935 Cruiser

Post  Maurice on Wed Oct 26, 2016 8:31 am

Hi John
Thanks for the comments. The carb is a Villiers. There is no choke, although there is a cable controlled mixture lever labelled Weak/Rich.
Forgive my ignorance but can I shorten the needle or do I need to try and obtain a shorter needle, and if so where?
Thanks.

Maurice

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Needle.

Post  piston 197 on Wed Oct 26, 2016 9:57 am

In the first instance I would buy a new needle to ensure you have the correct one ?
to start , needle must be raised ( rich position ) and lowered as engine warms up

JH
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Re: 1935 Cruiser

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