[SEL] Hot tube material

[George & Norma Armstrong]

Steve,
    Interesting.  My input shows my lack of familiarity with the FM ignition
system.  Sounds like a nifty set-up.  The tubes we use are also just
stainless nipples that we cap.       George
-----Original Message-----
From: Steve Gray <segray at mlode.com>
To: The SEL email discussion list <sel at lists.stationary-engine.com>
Date: Tuesday, May 03, 2005 1:19 AM
Subject: Re: [SEL] Hot tube material


>Hi George -
>
>   Dwight Vivas just beat me to the response on this. Dwight nailed it
>on the head as this hot tube is only used to start the engine, being
>heated by a blow torch only until the engine is running. The tube
>(pipe), Dwight, is 1/2". Mine is much shorter than it's supposed to be,
>nothing more than a close nipple with a pipe cap. The previous owner
>used to have occasional trouble getting the Y running, and I suspect
>with such a short pipe that he couldn't get it hot enough being that
>short and close to the head. Anyway, George, though not having a nice
>true hot tube ignition engine  :-(  , I'm sure the true hot tubes are
>longer than what I should have on this engine. My Y is also a 25 HP,
>Dwight. Serial number has it at 1919.
>
>- Steve
>
>--
>Steve Gray
>Member EDGE & TA, Br. 13, 27 & 49
>Sonora, California USA
>e-mail:   segray at mlode.com
>Home page:   http://www.oldengineshed.com
>
>
>
>George & Norma Armstrong wrote:
>
>>Steve,
>>  Oddly the tube does not act like a glow plug but rather acts as a small
>>ignition chamber as the gas/air mixture is driven into it by the piston.
>>The length of the hot tube determines the timeing  of the engine so you
may
>>not want to use a "short stub" of a tube.  The tubes we use on a Pattin, a
>>Reid and a Bessemer vary from 5" to 6" in length and some of them we use
are
>>stainless tubing with a screwed on stainless cap; items that should be
>>easily purchased.  Ours are from a local steel mill which uses these items
>>in their coke batteries and continuous casters.  They work very well.
>>George
>>-----Original Message-----
>>From: Steve Gray <segray at mlode.com>
>>To: The SEL email discussion list <sel at lists.stationary-engine.com>
>>Date: Monday, May 02, 2005 3:07 PM
>>Subject: Re: [SEL] Hot tube material
>>
>>
>>
>>
>
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