[SEL] RE: Castings/now hot bulb engines

don don.h at wcoil.com
Sat Apr 29 06:14:02 PDT 2006


I dont have a engine like that but I am guessing you could   flood  the 
engine with tooo much  fuel and choke it to death with a over rich mixture 
of gas  as could you spray wd 40 or something like that in the intack vaulve 
area ????
don
----- Original Message ----- 
From: "Russell Gilbert" <russell at ncable.com.au>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Saturday, April 29, 2006 2:28 AM
Subject: Re: [SEL] RE: Castings/now hot bulb engines


>
>>One little danger with these engines is the fuel valve. As
>>the engine governs on the non-opening of this valve prolonged exposure of
>>the valve spring to heat can lead to the excitement of the engine taking
>>off. I have seen this happen with both Australs and Blackstones and it is
>>heart-stopping.
>
> Heart stopping is putting it mildly Patrick. This has happened to me with 
> the very first time of starting my 6.5hp Blacky. There was no warning of 
> this happening as all the fuel valve assembly looked fine. It had even 
> been pulled apart, cleaned up and re-assembled. The first few tries my 
> engine didn't start. I made a new coil for the bottom section of the hot 
> bulb out of thin sheet metal. once this was done gave it another go. It 
> made the difference for the engine as it soon fired up. When it first made 
> a few puffs I had the usual smiles one get when bring one of these old 
> girls back to life. However the smile soon left as the revs moved up and 
> with no apparent way to shut the engine down; my smiles quickly went as 
> one was wondering do I just run; or stay and try to and calm the old girl 
> down. After shitting myself for a few seconds it was obvious I had to save 
> the engine. It was my pride and joy old motor etc etc. I had a friend with 
> me; (btw; this thing was really starting to pick the revs up big time!) we 
> pulled the fuel line out of the tank thinking that it will run out quick 
> enough, Wrong, they don't need much to fire. Fuel bowl was to hot to 
> remove as was other parts. We grabbed some pliers to try hold the valve 
> shut. No good, the small-ish pliers were to hard to get a decent hold onto 
> the part. Went for a bigger pair of pliers and luck was on our side as we 
> managed to get a good grip. The spring on the valve started to crush a 
> little allowing the pliers to bite in on the valve better and it slowed 
> down nicely to a holt. One then went and wiped away the stained undies. 
> Got a few shots of bourbon into the system and left the engine alone for a 
> little while. I think all this happened about the time on the SEL we were 
> chatting about exploding flywheels etc about 4 years ago. Well I can smile 
> about it now and talk about my 1000rpm blacky. From all this I guess could 
> come a question for any oil engine gurus as to how would they (if there is 
> an easy way) shut down a hot bulb engine like the Ronnies and blacky's if 
> they ran away like that.
>
> Russell
>
>
>
> Russell Gilbert
> Sunny Sunraysia
> russell at ncable.com.au
> http://community.webshots.com/user/russellsrelics
>
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