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Old 12-10-2019, 08:27 PM   #1
all american boy
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Default Stromberg Aerotype Two Barrel Carburetor

Grabbed one off Ebay the other day.


Should be here Thursday.


Have article somewhere saying how the Strombergs are super well made.


Something about there is more machining in them than most factory carbs.


Stromberg made the carburetors for airplane engines during World War II.


Ran across 'pressurized' Stromberg's that were used on airplanes.


That was so they could fly upside down and make sudden maneuvers.


Basically they did not have floats and float bowls.


They are kind of like fuel injection.


Going to get one of those too and try and adapt it to car engine.


So.All and all very happy with little Stromberg two barrel.


Happy holidays!
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Old 12-10-2019, 08:49 PM   #2
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Default Re: Stromberg Aerotype Two Barrel Carburetor

Here is a pic of ours taken by seller.

The adapter on the bottom maybe a couple things.

Carb King/the carbureretor shop.com said it is a butterfly governor.

Said he has never seen one on two barrel to one barrel adapter.


Doing a search I found two Aerotypes with same looking adapter.


They said 'Aircraft' Stromberg.Same carb though.Two barrel Aerotype.


We will not be using adapter.
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File Type: jpg Stromberg Aerotype 1.jpg (59.0 KB, 59 views)
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Old 12-11-2019, 01:40 PM   #3
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Default Re: Stromberg Aerotype Two Barrel Carburetor

That looks like a Stromberg AA type that was used on Buick, Cadillac, Oldsmobile, Hudson, Studebaker, Chrysler, and likely a few others. Buick used a compound carb set up back in the late 30s that was like dual deuces but worked like a four barrel. It was a weird setup & had an extra valve on it. A person doesn't see stuff like that much any more.

I have worked an a few antique aircraft that used Bendix/Stromberg type carbs. They aren't common either. Some of the little ones were pressure carbs so that they wouldn't be as prone to carb ice situations and no float valve to quit working when inverted. Others were more normal designs. I've worked on the one for the P&W 985 & 1340 engines. None of them looked like the AA types.

The big variable venturi pressure discharge type carbs were used on all the big round motor aircraft and V12 types. They briefly touched on these when I went through aviation school but that's about my only experience with them. They are complicated and more like a fuel control than a carburetor. They are very expensive to get overhauled and I imagine parts are way out there in the stratosphere in price. Not too many folks have the funds to mess with aircraft that have 4 big engines and four of those type fuel systems.
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Old 12-16-2019, 05:30 PM   #4
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Default Re: Stromberg Aerotype Two Barrel Carburetor

I've been kinda curious about this carb then I came across this on CL. Is this what y'all are talking about?

I'll post a link if someone wants it
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Old 12-16-2019, 06:59 PM   #5
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Default Re: Stromberg Aerotype Two Barrel Carburetor

It's an aircraft engine pressure carb so it's in the same category as those. That one has fixed size venturis instead of the variable or rectangular type. It was likely used on some intermediate size radial engine. Bendix/Stromberg wasn't the only company that made pressure carbs. That one looks like what the old Sikorski S-58 had on its Wright R1820 helicopter engine. It may be for any number of R1820 engines since so many were made during the war and after.

The Stromberg Aerotype in post #2 is an automotive type carburetor and it has a float bowl.

Last edited by rotorwrench; 12-16-2019 at 07:25 PM.
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Old 12-16-2019, 09:36 PM   #6
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Default Re: Stromberg Aerotype Two Barrel Carburetor

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Quote:
Originally Posted by rotorwrench View Post
It's an aircraft engine pressure carb so it's in the same category as those. That one has fixed size venturis instead of the variable or rectangular type. It was likely used on some intermediate size radial engine. Bendix/Stromberg wasn't the only company that made pressure carbs. That one looks like what the old Sikorski S-58 had on its Wright R1820 helicopter engine. It may be for any number of R1820 engines since so many were made during the war and after.

The Stromberg Aerotype in post #2 is an automotive type carburetor and it has a float bowl.
Thanks for the info. I forgot to post that the guy calls it a "Stromberg injection carb" for Pratt Whitney R2600. I believe that would be a WWII era engine.
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Old 12-17-2019, 10:46 AM   #7
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Default Re: Stromberg Aerotype Two Barrel Carburetor

The R2600 used a different version of the same carb. There were a lot of different versions of the PD12 series pressure carbs. The Douglas A20G Havoc used the R2600s.

Bendix went on to design & manufacture the continuous flow fuel injection systems that are still in use on smaller aircraft engines today. They still have a throttle body and pressure regulator with automatic mixture control but they feed fuel through stainless steel lines to the fuel injectors in the intake ports. RSA-5 and RSA-10 are the most common. Precision Airmotive Corporation in now the manufacturer of them.

Last edited by rotorwrench; 12-17-2019 at 11:02 AM.
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Old 12-19-2019, 06:33 PM   #8
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Default Re: Stromberg Aerotype Two Barrel Carburetor

Thanks for the response


In the meantime ran across a fairly simple way to have constant flow mechanical fuel



injection on your engine.Racing fuel injection.Not door car fuel injection.



Use a vane type pump not a displacement pump like the alky/nitro burners.


Scott used this kind of pump.Enderle and Kinsler sold them for awhile too.


Even was told of flathead(Ford V8) Scott setup ran a carburetor in the center


of a three deuces manifold.


Injectors were Stromberg throttle bodies converted to fuel injection.


I myself am shelving this for a bit.Have routine sort of mechanics to do



for awhile.Have to pay attention to what I am doing.Have been told that


helps.


Happy holidays!
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Old 01-01-2020, 11:26 AM   #9
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Default Re: Stromberg Aerotype Two Barrel Carburetor

Happy New Year's!


Yesterday loosened up adapter and it won't budge.


Going to put 3in1 oil all around it and hope it softens up gasket.


This is one hefty carburetor!


Big too.Working on some little Corvair 1 barrels and this Aerotype is four

times the size of those.

It is from the early 50's when having big heavy motors was A okay.

The other model of Aerotypes are more like Carters and Rochesters than this is.


This has what looks like a cast iron tall base.


The bases were used on early hot rods for fuel injection air butterflies.


May have had the nozzles stuck in them too.


Saw four of them on top a blower in one article.


All in all a cool little item!
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