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Amal float chamber body query...

I've just listed an Amal float chamber body with some other parts on the 'parts for sale' section...It's marked '1BM'...Anyone know the application for that one?...It has no angle cast in so I'm guessing it's for a side valve...Ian

email (option): ian@wright52.plus.com

Re: Amal float chamber body query...

Oddly, it only seems to be listed for the '46 -on Red Hunter. It had a single banjo.

email (option): 79x100@gmail.com

Re: Amal float chamber body query...

Thanks Rik...Ian

email (option): ian@wright52.plus.com

Re: Amal float chamber body query...

Rik
Oddly, it only seems to be listed for the '46 -on Red Hunter. It had a single banjo.
Odd as i thought Red Hunters had a downdraft inlet track. You would think it would have an angled float chamber.

Tim W

email (option): t.j.walker@btinternet.com

Re: Amal float chamber body query...

One of those things that I don't 'know', Tim...but it seems to be what Amal said...Maybe it was a 15° or somethng and someone straightened it ?

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email (option): 79x100@gmail.com

Re: Amal float chamber body query...

Rik,
That's what the text says so must be right, sure someone will enlighten us.

Tim W

email (option): t.j.walker@btinternet.com

Re: Amal float chamber body query...

In my Amal book it quotes the 1BM for the red hunter as 15 degrees. Ron

email (option): ronpier@talk21.com

Re: Amal float chamber body query...

Ok a 1B bowl was fitted to BSA M20, some Ariel and some Panthers. It has a cross drilling on the brass bit below the bowl for a horizontal fuel elbow to be fitted. It has no angle.
A 1BM was fitted to some Ariels and also had the cross drilling but is on a 15 degree angle which is quite acute.

BUT in 1950 Amal made a bigger cross drilling for the arm running into the float bowl to let more fuel in, this type has a bigger screw plug on the end of the arm than the earlier pre 1950 type. To mark these they put an M for modified after the bowl numbers so a 1B became 1B/M sometimes the angled line is hard to see. If this bowl is not on an angle it will be a post 1950 1B bowl therefore marked 1B/M.
Best regards and keep safe.
John

email (option): ukcarbsat hotmail.com

Re: Amal float chamber body query...

Thanks John...Very interesting information...It's a shame your expertise regarding AMAL carbs isn't more readily available!!....Ian

email (option): ian@wright52.plus.com

Re: Amal float chamber body query...

Concise as ever John!

Here's the bronze 74 you sent me. Dull chrome plated now.

Best regards and thanks. Ron

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email (option): ronpier@talk21.com

Re: Amal float chamber body query...

Hi Ron, yes the carby looks great I am very impressed. Glad I could help as you and Ian are great contributors to this forum.

Regards

John

email (option): ukcarbsat hotmail.com

Re: Amal float chamber body query...

Cheers John.Some of these normally tedious jobs can be a blessing during these long hours of lock-down:+1: Ron

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email (option): ronpier@talk21.com

Re: Amal float chamber body query...

A tedious job indeed, and a over complicated thing. I have assembled quite a few, but worth it in the end. Think those army workshops would have soon change them to the standard twist grip.

email (option): t.j.walker@btinternet.com

Re: Amal float chamber body query...

Your right Ian I should put pen to paper for the pre mono type carbs but consider the interest is dying as everyone over here anyway is playing with MK1 carbs on Triumph Bonneville.

Regards
John

email (option): ukcarbsat hotmail.com

Re: Amal float chamber body query...

Not dying on here John. There is probably lots you can tell us. Feel free to start a thread.

Ron

email (option): ronpier@talk21.com

Re: Amal float chamber body query...

['Feel free to start a thread...']

Or better still archive some information in the 'Technical Section'....You just need to contact Henk to have it put on there...Ian

email (option): ian@wright52.plus.com

Re: Amal float chamber body query...

Hi Ian will contact Henk and get the ball rolling. Will start with the various BSF and other threads used on the 276 type carburetter as I don't think they are readily available.
Regards John

email (option): ukcarbsathotmail.com

Re: Amal float chamber body query...

Good man!!....I'm looking forward to it as there are always more things to learn...Ian

email (option): ian@wright52.plus.com

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