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Old Jul 15, 2011, 12:12 AM
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That's nice Charlie, and a great effort to boot.

So what do you build for it? CL?
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Old Jul 15, 2011, 12:26 AM
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Thank Gossie, Something C/L is the plan, but I don't know just what yet. I will have to start with a major cleanup in the workshop first.
Charlie
Old Jul 15, 2011, 02:06 AM
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Voices through wires? Ha!
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Gorgeous! The Tommybar is pure Oliver....but why am I thinking Futurama??...
Old Jul 15, 2011, 02:20 AM
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Hi


Good engine for a Mercury Toreador
Old Jul 15, 2011, 02:43 AM
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That's a gorgeous little diesel you have made Charlie. Any more in stock?
Old Jul 15, 2011, 03:01 AM
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Good Better Best quest.
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Quote:
Originally Posted by 2gun View Post
Perhaps this might interest someone. It is an MAN .19 diesel that I have built from a design published in Model Airplane News in 1956. It started life as a lump of aluminium 2 1/2 inches diameter. It runs well and starts easily although making it was a bit more involved than I expected.
Charlie
Very nice work but what is the witness line up the front of the crankcase
Old Jul 15, 2011, 04:14 AM
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The bit of the crankcase between the top of the engine bearers and the lowest fins was shaped by spark eroding (EDM) and the witness line that you see on the front of the case is where I didn't do a perfect job of aligning the electrode when I turned the case over to cut the second side. I will attach a photo of the electrode that I used. (I made 2, but only needed 1)
Old Jul 15, 2011, 05:56 AM
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Charlie, may I add my congratulations on a beautiful job well done ! The engine looks like a surgical instrument that has been hewn from a solid block of stainless steel by a laser. Its the class of artifact that should be in a museum somewhere ! BOB ALLAN
Old Jul 15, 2011, 06:01 AM
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Thanks Bob, coming from a student of engines such as yourself that is a real compliment.
Charlie
Old Jul 15, 2011, 07:15 AM
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Time for me to Fly...
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Quote:
Originally Posted by 2gun View Post
Perhaps this might interest someone. It is an MAN .19 diesel that I have built from a design published in Model Airplane News in 1956. It started life as a lump of aluminium 2 1/2 inches diameter. It runs well and starts easily although making it was a bit more involved than I expected.
Charlie
Hey Charlie, that thing is beautiful. You should be very proud of that effort.
Old Jul 15, 2011, 07:46 AM
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2gun, I loved how that engine came out. That was a great job you did on making the engine. The EDM method you did, made it look like a cast crankcase too.
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Old Jul 15, 2011, 09:38 AM
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The bit between the bearers and the lower fin was done with the EDM, but the part below the bearers was done by hand with a file, then polished. After that I masked up the case with tape and used a small bead blaster with glass beads to make the whole back part of the case above and below the bearers look the same. The front and fins were masked to keep them shiny.
Charlie
Old Jul 15, 2011, 12:38 PM
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Originally Posted by earlwb View Post
Do post some pics. Nice find. Is it like one of the Valentine Reproductions?
ref http://www.ronald-valentine-engines....5_DR_Mk_I.html
You know, I never thought about using a fuel tank pressure tap straight off the exhaust port on the engine before.
I wonder how well that worked on generating a little fuel tank pressure.
That is a prime tube, it is connected to the multi-function valve which acts as a shut off/and fueling device used in F2C control line team race, the multi-function valve also primes the venturi when filling the model. You will find a tube like that, either a nipple or thin copper tube, on the team race engines that where designed after the introduction of the multi-function valve.

I will look for a picture of a B.P. that I have and post it to show what I mean.

Lionel.
Old Jul 15, 2011, 02:02 PM
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Originally Posted by SAslinky View Post
That is a prime tube, it is connected to the multi-function valve which acts as a shut off/and fueling device used in F2C control line team race, the multi-function valve also primes the venturi when filling the model. You will find a tube like that, either a nipple or thin copper tube, on the team race engines that where designed after the introduction of the multi-function valve.

I will look for a picture of a B.P. that I have and post it to show what I mean.

Lionel.

Thanks for the info, yes I would like to know more about how that would work. I was thinking as to why prime through the fitting if the exhaust port is already there open so there must be some other purpose for it.
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Old Jul 15, 2011, 03:16 PM
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The exhaust port is no normally easily accessible in an F2C model. And the pitman wouldn't want to be looking for it during pitting. Look up an F2C race on you tube to see just how fast a pit stop is.

Greg


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