5 replies to this topic

[Evan A]

does anyone know anything about this gasifier in the gallery.. http://www.gekgasifi...lts&searchid=55
is it a Kalle?

[jimmason]

evan, i don't know what that is, but given how small it is, i would expect it was intended to run on charcoal.  biomass gasifiers at such small scale are exceedingly difficult to keep hot enough to convert the tars.  also, the needed restriction gets too small for chunk fuels to reasonably pass.

these dependencies are much reduced in a charcoal gasifier, as the tar problem was already mostly solved in the pyrolysis that made the charcoal externally.  most of the volatiles that would have become the tar otherwise are gone so the challenges are much reduced.

dutch john and jay in placerville have been making tiny gasifiers.  john has one for a small lawnmover.  not sure what jay's is for yet.

jim

[pgt7787]

http://www.gengas.nu...der/cykel.shtml

above link is the the answer
Guy

[Evan A]

there is also this one http://www.gengas.nu...erg/index.shtml
I just need to translate the pages. Evan

[Fornax]

pgt7787 said:

http://www.gengas.nu...der/cykel.shtml

above link is the the answer
Guy

Hey all, I am new to the forums, and also interested in building a small scale charcoal rig. My swedish is pretty passable, so I thought id offer a translation of the above link:

Gasgenerator: Scaled down copy of Svedlundsgeneratorn (the svedlunds generator). Reactor body in stainless steel, lined with ceramic fiber. Burning nozzle in Kanthal (?). Rough filter in the pipe under the cooler. Fine filter with cork crumbs under the seat. Gas mixer of venturityp (venture type) with lubricator made by UNIKUM. The accelerator stands in as the choke/gasregulator.

For fuel I use crushed charcoal of about 5-10mm pieces, I sift out both larger and smaller particles. The start is effected with a separate suction fan in a vent before the fine filter. Fanning takes about 5 minutes, then you pedal like a maniac at maximum speed, while desperately adjusting the mixture with the controller on the handlebars. Just before your heart gives out, and your friends are ready to call 911, the motor catches weakly, and soon goes with decent speed.

Unfortunately its not very powerful, 38cc is probably the border for practical function. During the war a number of rigs were sold to 98's that had similar wood-gas performance to a decent moped on gasoline. But, its has truly been fun to build this little woodgas machine.

Text by Anders Åkerstedt (translation by Fornax)

[Fornax]

Evan A said:

there is also this one http://www.gengas.nu...erg/index.shtml
I just need to translate the pages. Evan

Hey, Norwegian is basically Swedish, so ill translate this one too (some of it im was a bit foreign, but i think it should be understandable):

I inherited my Sperco II from my maternal grandfather who bought it in Sweden during the war, that is to say, 1942. It is completely original, and mounted on a 1936 Blixt 98cc that was produced at Nymans Verkstäder (Nymans workshops) in Uppsala (sweden). I have driven it at several veteran rallies both in Norway and Sweden, and it works well. There is only one Sperco II in Sweden, and mine is the only one in Norway. Here is a piece of swedish history gone to waste! Åsbrink and Co were permitted to produce wood-gasifiers for MC 21 april 1941. They were located at Sibyllegatan 3 in Stockholm. Permit number was 257.

Text by Rolf Barry Berg (translation by Fornax)