this is the second gasifier we built last year- on a gutbrod license mower with honda 8 hp engine. the mower has had a two stroke engine before, what we changed to a 4 stroke engine to avoid oil dripping lubrification on a two stroke when gas is used …
the first gasifier was very successfull, built in iron and for corrossion-reasons with strong material and becomes of course heavy in this way…
for the mower would be too heavy, so we decided to build in stailess steel and using thinner material, so the gasifier without blower has the weight around 25 kilo…
for working the blower can be taken away. with one filling with charcoal runs more than 4 hours. it is no need to shake during operation- perhaps we used in the reducton area a perforated container with 3 mm holes, so the gas can escape also throug the wall of the reduction chamber, and also for reason of vibrations and not so flat ground where it drives… till now works 35 hours in hay season…
the gasifier is placed nearly centric over the wheels for to have a good balance with this additional weight.
filtering is with a stainless steel mesh, the filter works also as cooler. the filter container is something like pepsi cola pression barrel .
for starting we have a ball valve near the original carburettor, so when starting the right mixed gas is immediately near the motor…when the motor runs this secondary air valve is slowly closen while the other secondary air valve over the green rubber hose is opened.
when operating the secondary air helps to cool the green rubber hose because there is only half volume of warm gas inside …upper the valve is the secondary air filter
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