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Hit & Miss Gas Engine Discussion Meet collectors of hit and miss engines, ask questions about collecting, restoring and showing antique flywheel engines.

Hit & Miss Gas Engine Discussion

Pierce Inverted Twin, surface carburetor


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  #21  
Old 08-09-2019, 06:21:35 AM
Gemmer1 Gemmer1 is offline
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Photo Re: Pierce inverted twin, surface carburetor

Bill, it appears that the combustion chamber could be opened to the atmosphere, cylinder drain?? But I don't see why.

Another thing I noticed is what looks like an intake valve with a spring on the left hand port. The smaller HP engines used the right port for the intake and the left one was just an access to the exhaust valve on the other side of the cylinder. See pic.

Also a couple of 2HP catalog pictures.

Jim
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  #22  
Old 08-09-2019, 08:59:32 AM
Bill Hazzard Bill Hazzard is offline
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Default Re: Pierce inverted twin, surface carburetor

This engine was cobbled together bad, the spring on the left hole is a home made intake valve cage as well as the plug where the intake belongs. They put a hole in the base and drilled a hole into the combustion chamber for a spark plug and when drilling the hole they hit the water jacket and to stop the water from running out they poured lead all around the spark plug hole to seal it up. It was a mess.

I was able to gain access to the engine at the Henry Ford Museum and take measurements and pictures so I can make the engine right. Their engine is also missing parts but between the two and the catalog cuts I should be able to make the parts it needs. I am making the exhaust plug, intake cage, fuel pump and rod, overflow bowl, ignitor, mixer and pulley.
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  #23  
Old 08-09-2019, 09:06:40 AM
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Chris Epping Chris Epping is offline
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Default Re: Pierce inverted twin, surface carburetor

Bill - is this the same engine before you removed the colorful paint?
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Old 08-09-2019, 09:08:21 AM
Dale Russell Dale Russell is offline
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Default Re: Pierce inverted twin, surface carburetor

Sounds like you got your work cut out for you. Good luck!
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  #25  
Old 08-09-2019, 10:30:12 PM
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Dwayne Fuller Dwayne Fuller is offline
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Default Re: Pierce inverted twin, surface carburetor

Quote:
Originally Posted by Chris Epping View Post
Bill - is this the same engine before you removed the colorful paint?
I think I have seen that pink engine before, maybe at Pawnee, OK about 20 years ago.

This thread has got me excited about my twin again. It has not been out since Coolspring two years ago. If I live long enough I would like to be able to get a period correct boat built to install it in. Anyone have any literature on the style of boat it would have been in?
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  #26  
Old 08-10-2019, 05:28:03 PM
saengineman saengineman is offline
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Default Re: Pierce inverted twin, surface carburetor

It was at the big Granbury show a long time ago.
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  #27  
Old 08-10-2019, 09:04:39 PM
Bill Hazzard Bill Hazzard is offline
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Default Re: Pierce inverted twin, surface carburetor

Chris, yes that is the engine that I am working on, thankfully Jerry sand blasted that paint off.
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  #28  
Old 08-12-2019, 10:14:33 PM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Pierce inverted twin, surface carburetor

I made a new platform, finished the plumbing. I have to square everything up and bolt it down. I should be ready to run in a few days.
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  #29  
Old 08-12-2019, 11:28:35 PM
Lester Bowman Lester Bowman is offline
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Default Re: Pierce inverted twin, surface carburetor

JB..

I really cannot make out the plumbing very well but do see your Gas Cocks. If you haven't an inline Check Valve coming off your vaporizer you certainly should install one at least AND a fitting with a "flash back" screen pack.

Wayne Grenning had an EXCELLENT thread on these types of Flash Back screens and I tried my best to find it but failed. Remember in High School lab and the experiment where a screen was held above the flame of a Bunsen burner? The flame would stay on the bottom of the screen..the screen preventing it from going through the fine weave of the screen.

What you NEED to remember about these vapor systems is this. That fuel mixture coming from that cast iron tank is a volatile mixture of fuel AND AIR . In other words a flame can flash back through the piping because it has enough oxygen mixed with it to do so.

You know more than I about these Pierce Vaporizers. However I see no difference in theory from a Regan Vaporizer and I know first hand that a flash back happened in a Regan Vaporizer with no check valve in place. There was an explosion involved and fortunately nobody was hurt. It was an excellent learning experience when I built my smaller Vaporizer.

I don't know.. I find a cast iron tank full of ignitable gas a bit scary and yes..you may have some "checks" in place which will do the job. I know you're not finished yet with the plumbing. Just my two cents based on experience.

By the way..wonderful job so far on an engine I always found interesting and unusual and very desirable. Well done
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Old 08-13-2019, 06:38:39 AM
Gemmer1 Gemmer1 is offline
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Default Re: Pierce inverted twin, surface carburetor

Excellent craftsmanship JB! That will make one very nice display.

I second what Lester is saying about the flame arrestor issue but that along with a good check valve should make it safer than what Andrew Pierce did.

Proceed carefully,

Jim
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Old 08-13-2019, 06:56:56 AM
Don Selmer Don Selmer is offline
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Default Re: Pierce inverted twin, surface carburetor

J.B. First of all what a Fantastic restoration on a rare piece. In post #4 that is my PIERCE engine. Also the 2nd picture (illustration) in that post both shows the check valve in line. Just saying. By the way I really like those brass fittings on your engine.
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  #32  
Old 08-13-2019, 08:09:09 AM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Pierce inverted twin, surface carburetor

The check valve is inside the box, I ordered some 3/8" sintered bronze filters, when they come in I'll post pictures of them in place.
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  #33  
Old 08-13-2019, 04:54:46 PM
Don Selmer Don Selmer is offline
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Default Re: Pierce inverted twin, surface carburetor

J.B. That sounds like a true ENGINEER thinking outside the box or should I say inside the box (Surface carburetor.)
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  #34  
Old 08-13-2019, 07:01:30 PM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Pierce inverted twin, surface carburetor

Don the fittings were mostly Chinese, had to get rid of the Chinese lettering so I cut them to make them look like the old fittings. I made a cutter to do the beads, machined what I could and sanded and polished the rest. In the last picture you can see them in various stages. The reducer on the carb was a regular cast iron fitting. When I get the flame arrestors I will post pictures and explain why the check is in the box.
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Last edited by J.B. Castagnos; 08-13-2019 at 07:03:23 PM. Reason: correction
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  #35  
Old 09-08-2019, 10:15:51 PM
Don Selmer Don Selmer is offline
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Default Re: Pierce inverted twin, surface carburetor

J.B., How did your PIERCE TWIN run on the surface Carburetor at Portland?
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  #36  
Old 09-08-2019, 10:37:23 PM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Pierce inverted twin, surface carburetor

It ran good Don, a little sensitive but I learned what it wanted. I'll get some picks and tell the rest of the story.
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Old 09-08-2019, 11:35:31 PM
Don Selmer Don Selmer is offline
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Default Re: Pierce Inverted Twin, surface carburetor

Were you able to get with Ed and Nick Rowland?
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  #38  
Old 09-09-2019, 11:22:21 AM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Pierce Inverted Twin, surface carburetor

I saw Ed passing, didn't see Nick
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