Carburettor Detroit motor casting company, design by breeze help/info

[Simon Anderson 11]

Hello,

Looking for any info on the pictured carby below, year, fitment, any parts around. Any info greatly appreciated. 

Edited November 14, 2020 by Simon Anderson (see edit history)

[edinmass 11,489]

My limited knowledge of them indicates they are early, off small engines and motorcycles for the most part, and some of them are unbelievably expensive. Is it a motorcycle part? 

[Simon Anderson 11]

I am unsure what’s it off

i have looked through a number of books and internet with very little information.

the throat size is 1”1/8.

 

[Simon Anderson 11]

It may appear little is known of this carburettor.

[Benoit 58]

Some related info here:

 

https://riders.drivemag.com/features/1910-pierce-four-road-test-the-vibrationless-motorcycle/

 

Edited November 23, 2020 by Benoit (see edit history)

[Simon Anderson 11]

Thank you Benoit, this help me regarding how they set up the spring rate on the air valve. thanks again

[Benoit 58]

Here's one I bought off a guy on the Tour de Fleurieu a few years back. I might try it on my Le Zèbre some day.

 

[Simon Anderson 11]

That is a fantastic looking unit.

 

I would be very interested in what springs it uses in the air valve. As mine has none, and from reading the info you supplied there was two springs.

 

[Benoit 58]

I'm not sure if the spring is original. It looks a bit home made.

 

You might find someone else with one of these on the SmokStak Downunder forum.

[Simon Anderson 11]

Thank you Benoit,

I appreciate you taking photos for me. Yes it appears to be a home made spring, but it could be the correct one, who know. 

I will check out the other forum.