Simmons Carb Question.

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Model T Ford Forum: Forum 2014: Simmons Carb Question.
Top of pagePrevious messageNext messageBottom of page Link to this message  By Pat Kelly on Tuesday, July 15, 2014 - 01:14 am:

Has anybody hooked up and used the electric heater coil on a Simmons carb?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Paul Mikeska, Denver CO on Tuesday, July 15, 2014 - 01:32 am:

No. I don't think it is a good idea. Gas in the T days was closer to kerosene, and not as volatile as modern gas. Up draft carbs with gravity feed are prone to leaking. Watch how many guys are beating their carbs on a tour to keep them from leaking after a rest stop. I doubt that my insurance would pay for the burned down car if they found out that I had hooked it up. YMMV.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Royce in Georgetown TX on Tuesday, July 15, 2014 - 07:12 am:

The heater coil is meant to be used when starting your T on cold wintery mornings. I've got a Simmons on the '14 right now. Two or three pulls with the key off and the choke pulled. Turn the key to "BAT" and 99 times out of 100 it starts without touching the crank handle again.

I can't imagine why anyone would want to hook the coil up. It certainly would not improve the performance of my Simmons carb.

I wish I had a new set of stickers for mine:







Top of pagePrevious messageNext messageBottom of page Link to this message  By Pat Kelly on Tuesday, July 15, 2014 - 08:41 am:

Reading past posts on this carb, some people say NH parts are interchangeable with the Simmons. Is this so? And Royce, how do you like the performance?


Top of pagePrevious messageNext messageBottom of page Link to this message  By James A. Golden on Tuesday, July 15, 2014 - 10:06 am:

I have a Simmons Super Power that I have been wanting to try, but the rear flapper is out of it that gives the main advantage for wanting to using it.

Interesting that the Vaporizer had the same flapper to regulate air flow and the Simmons was patented after the Vaporizer came out.

The heater coil is also missing, but that is not a problem.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Tuesday, July 15, 2014 - 11:34 am:

The Kingstons have flappers in them as does my straight through Marvel, so the idea of a door that opens as the air flow increases and is closed to enrich the fuel when starting is older then the vaporizer.
Re the heater coil, most guys take them out and close off the hole with a bolt/screw and sealing washer.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Royce in Georgetown TX on Tuesday, July 15, 2014 - 01:33 pm:

Runs fantastic, about the same as an NH Straight thru.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Stan Howe Helena, Montana on Tuesday, July 15, 2014 - 02:09 pm:

The coil is not JUST for heating the mixture. While the engine is running the coil vibrates or pulses as the intake strokes occur. The vibration of the coil helps to break up the droplets of fuel coming out of the orifice. Fuel comes off the orifice in droplets as a liquid and has to vaporize before igniting in the cylinder. That is why carbs are not mounted directly to the intake port, to give time for gasification of the liquid to an ignitable vapor. Heavier fuels are assisted in the gasification by passing over a spring or coil. See their patent and many others for devices to assist in breaking up the droplets of heavy fuel.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tom Carnegie on Tuesday, July 15, 2014 - 03:03 pm:

Royce, if you can get someone (Martin Vowell perhaps?) to do the art work, I can print up decals for you.


Top of pagePrevious messageNext messageBottom of page Link to this message  By george house on Tuesday, July 15, 2014 - 08:10 pm:

You fellows with Simmons carburetors with missing flappers - Jack Daron makes the flappers. He made the one in my Simmons and I, too, feel it's performance is about the same as a NH Straight Through.


Top of pagePrevious messageNext messageBottom of page Link to this message  By James A. Golden on Tuesday, July 15, 2014 - 08:32 pm:

Is the one that Jack makes an exact copy of the original?

Does he make any other Simmon parts?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jack Daron - Brownsburg IN on Tuesday, July 15, 2014 - 09:02 pm:

James, I no longer make the flappers. Kenny Edmunson did,for awhile.I have made needles for them,but not recently.


Top of pagePrevious messageNext messageBottom of page Link to this message  By george house on Tuesday, July 15, 2014 - 09:04 pm:

I don't know if its an exact copy or not but the carb makes my tudor run like a scalded ape. However, in all truthfulness, I have to initially stick a large bent nail in the carb intake because the flap must be so new it sticks closed. Once the Model T is started I take the bent nail out. I don't know what other Simmons parts he makes


Top of pagePrevious messageNext messageBottom of page Link to this message  By John Danuser on Tuesday, July 15, 2014 - 09:54 pm:

Jack nice to see you back on here, hope you are doing better now that surgery is over, our prayers are w/ you and your family


Top of pagePrevious messageNext messageBottom of page Link to this message  By Pat Kelly on Wednesday, July 16, 2014 - 10:53 am:

I see in Royce's picture a spring for the choke. Mine is missing. Is this an available part? No one mentioned if NH parts will fit. Any ideas?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jack Daron - Brownsburg IN on Wednesday, July 16, 2014 - 11:24 am:

The NH spring will fit and work on a Simmons.All the other NH parts work well,except for the needle.


Top of pagePrevious messageNext messageBottom of page Link to this message  By James A. Golden on Wednesday, July 16, 2014 - 12:37 pm:

Jack, are you saying the needle valve that lets gas into the bowl is different or the one that adjusts the mixture is different.

I found a rather rusty Simmons that had a good flapper in it. I'm not sure if it is pot metal or aluminum, but it looks good and came out rather easily.

It is interesting that the screw on the choke flapper has to be accessed all the way through the carb and then the air flapper has to be installed.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jack Daron - Brownsburg IN on Wednesday, July 16, 2014 - 02:10 pm:

The main idle valve is the odd one,as it is much shorter.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Anthony J Marino on Thursday, July 17, 2014 - 08:36 am:

Jack, are you well enough to do another Simmons for me? It does have a (crusty) flapper and the electric coil.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Derek Kiefer - Mantorville, MN on Thursday, July 17, 2014 - 08:47 am:

I too need a flapper for a Simmons.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ted Dumas on Thursday, July 17, 2014 - 04:08 pm:

The fuel needs to be atomized(many, many very small fine droplets). If the fuel is vaporized, then it's large volume will displace combustion air and reduce power.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Pat Kelly on Friday, July 25, 2014 - 11:51 pm:

Got my Simmons rebuilt and on the car. There is a definite power increase. Mid range and top end are better and it has a nice smooth idle. I like it. PK


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