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Schebler Mod. D question


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  #1  
Old 06-12-2005, 02:02:29 PM
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Default Schebler Mod. D question

Can anyone explain the purpose behind the intake on this 3/4" Schebler Model D. Never seen another like it...Thanks! (The solder is not relevant I know)
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Old 06-12-2005, 03:51:33 PM
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Elden DuRand Elden DuRand is offline
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Default Re: Schebler Mod. D question

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Originally Posted by Robt.
Can anyone explain the purpose behind the intake on this 3/4" Schebler Model D. Never seen another like it...Thanks! (The solder is not relevant I know)
I guess you're referring to the spring-loaded valve in the air intake.

That is a variable choke. As the air flow goes up, the choke is forced to compress the spring, opening it more. You adjust it along with the needle valve to get best running at all speeds and loads.

My 1917 American LaFrance had a BIG Schebler on it and the choke spring tension was adjustable from the steering column. The rule was to tune for maximum effect - in other words ROAR!

Take care - Elden
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Old 06-12-2005, 07:02:33 PM
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Default Re: Schebler Mod. D question

Actually Elden, I was refering to the port on the bottom of the bowl with the remains of the mesh screen. I've seen 30+ Schebler D's but never one with this arrangement. Is it common?

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Old 06-13-2005, 10:18:08 AM
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Elden DuRand Elden DuRand is offline
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Default Re: Schebler Mod. D question

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Originally Posted by Robt.
Actually Elden, I was refering to the port on the bottom of the bowl with the remains of the mesh screen. I've seen 30+ Schebler D's but never one with this arrangement. Is it common?
Robert:

My American LaFrance also had an auxillary air inlet coming out of the bottom like yours does.

Where the screw is that holds the screen on yours, mine had a bolt that held on a cast brass "pipe" that ran around and up and drew air from about the top of the float bowl. It could be that yours originally had this "pipe" but it got lost and was replaced by the screen.

I'm sure Schebler made a lot of different types of carbs - some with the spring-loaded choke, some with the auxillary air inlet, some with both and some with none.

DISCLAIMER: The opinion just expressed is worth exactly what you paid for it.

Take care - Elden
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