Gallery, Projects and General > The Design Shop
Poor man's emergency genny.
jatt:
Your backup genny doesnt have to be a Honda.
Picked up a new 3500W (peak) so what's that about 3000W in real terms in Oz for $850 about 18 months ago. Yes it is a chop stick import with a Honda copy for an engine, but it is doing the job out on site nicely.
I'm sure that with some thought and trial and error u will achieve roughly what u set out to do. In the past folks who tinker have created some terrific stuff, so I'm not gunna put down ur idea.
I know how it sounds, call me what u like, but I would at least price up what the bits u will need to do the job before going further.
Its only my opinion.
Fred Bloggs:
Gentlmen
Just a comment on petrol generators and small plant engines in general, I have in the past played/modified and bodged these engines to run off LPG (liquid petroleum gas) which is 20% of the price of petrol in the UK, I even ran a old mini digger off LPG as the carb was B***ered and I refused to spend 200 quid on a new engine (there was no spares available for the original engine). All I did to try it out was get a small LPG tank (5Kg I think) fitted a variable pressure regulator (hiding in the junk box) and fitted 10 feet of gas hose to the reg, then I removed the air filter, wired the free end of the gas hose into the carb inlet cracked open the gas at a very low output pressure (approx 1/4 psi) and kept pulling the starter rope whilst playing with throttle settings and choke , after 10 or 15 pulls the engine started and ran!!
Once I got it to run I just set the pressure and throttle so that the engine would run well at 3/4 full revs and started to use the digger. Once I'd proved the engine would drive the digger whilst running on LPG I removed the carb , bored out the fuel jet to a size that would take a piece of small bored copper pipe (6mm) (glued in with epoxy) and attached it to the gas hose. Digger proceeded to digger the footings for the extension (SWMBO was please as total cost £0) and project only delayed by a day.
I have made up adapters in the past that fitted between the carb and the air cleaner so that an engine could be started on petrol then turned over to gas (easier and more flexible); normally a piece of 30mm diameter ally bored out to the internal diameter of the carb with a piece of 6mm copper pipe at 90degrees to the bore, is good enough.
I/we have also run diesels on gas (they actual still require diesel for ignition purposes, the gas will give more power or just enable you to reduce the amount of diesel you burn for a give power output) !! Note-you can blow the engine up, stick with petrols until youve had some practise and thought!!
Sorry about the poor grammar english was never my strong point at school.
Fred
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