I wanted to have a place to share some of the "small" engines we have seen and experienced successfully woodgas ran.
Whole bunch of people now woodgas ran the years produced 1976 to early-2000's Single Overhead cam Ford I-4's in their different ignition 2300 and 2500 cc configurations. Works well. Ever wonder how much actual power potential these have as a stationary 1800 RPM gen-set?
Gasoline 36 shaft horsepower (27 kW) mechanical
Natural gas 33 hp (25 kW)
Propane 38 hp (28 kW)
These are Ford factory ratings on thier LRG-425 LP engine used in a certified 20 kWel Telecom system. Full data at 3600 RPM with pictures was put up here:
Both APL/GEK and Victory Shop have evolved to the Kubota DG 972 3 cyclinder natural gas engines. Why? They work very well and Kubota wanted this usage to be developed and publicized. But yeah, couple of three thousand dollars a unit new.
Hey Chris/kymetro! Wanna read about a fellow took one of your Geo Metro engines, made a 4 kW home gen-set (propane fueled), a made a home built electronic govenor system?
Starts at Relpy #10 and goes on from there. Fellow who built this put it up as a $2000. COMPLETE system challenge point.
He is now here a member here wanting to learn how to woodgas fuel it.
Then there is Daniel/foxridgecampground with his 22R SOHC Toyota gen-set. Matches Bruce's in Iraq Toyota PU and the International Geographic/JohanL. built Toyota pickup.
I personally do like a pushrod overhead valve operated engines much better for the "weak link" of a bent pushrod when a stuck valve incident may occur. V-twins are my favorite smallest engines in these. Experience now with Kohlers and Genracs V-Twins. APL/GEK has now logged many hours on V-twin Hondas and Kohlers.
In my opinion now best to 2-3X oversize the engine versus when on gasoline or propane;
Down speed operate it below 3000 RPM just like Wayne and others overdrive and down speeds their vehicle engines on slow combustion woodgas;
Stick with multi-cylinder engines to help even out the intake pulsation's. The woodgas gets easily push around in waves screwing up even delivered air/fuel ratios;
And MUST have electric starting!! This frees you up to fiddle with the gasifier/mixture stuff without huff and puff hand pulling/cranking passing out. Allows you to build useable woman, older responsible child capable system from the get-go.
I could go on and on but enough for now from me.