Chevrolet s10 4.3

I wonder if this is the fault that the car has been so weak the last few times?
@JO_Olsson O how high is your wood container?
Can I connect the earth together on this and have incoming on + and other end out to motor on M +?


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Yes, the flat hose could be the reason.

It’s about 40 cm in total from bottom to lock ring. The inner hight is a few cm less in reality and the funnel uses about half of it.

Yes, they will be connected via the chassis anyway.

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Thanks JO.
The black stripes on the hose are holes, strange that the car worked.

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Ha, most leaks can be compensated for with the air mixing valve :smile:

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Do any of you have a link to a pwm or rheostat that I can use to control the gasoline pump?

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They are all over Ebay

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how about a link, all I can find is 4 terminal ones.

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Wayne is using a dimmer rheostat for dashboard instrument lights. It’s a little weak and will probably fry if used too much. I wonder how a fan speed control from a junked out car would work?
At one point I was even tempted to experiment with a set of parallell bulbs in series with the pump but I never got to it.
Another option would be to try alter the voltage coming from the tps. To spoof the computer to think you using less throttle should be possible.

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Ha, l did just that on my Seat :smile: later l winded thin wire around a thick metal pipe to serve as a heat sink. That simple sturdy resistor worked wery well and is simple to make and adjust (by the number of winds)

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All I have ever used is the four leg ones.

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Thought to show the roads I go, very shaky, but get bridges with both fine and thick wood.
Today drove 10km before the temperature showed that the bridge was running.
Have you ever made a stir for the firewood?

https://youtu.be/FcGcn71SRn8

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Thanks for the tour in the woods.
I can’t wrap my head around the bridging problems. We have same hopper vessels. With a full hopper I would expect the temp to just start climbing above ambient at 5km and maybe 40-50C at 10km.
Filling only 1/3 of the hopper, like when going to work, I may reach normal operating temp 70C at 10km.
I’ve noticed though, idling around slow speeds like you did in the video, my hopper runs a little hotter.
Could be hot fumes are not dragged down into the firetube as hard, but also the hopper doesn’t get cooled down as much by the wind.
We should get together and do some testing. We will have the klan gathered here during the Midsummer weekend and then another week of work, but after that things should slow down.

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Tried this morning with pieces of birch 40mm x 20-50 mm diameter.
After 2km 150 degrees in the hopper (probably old coal) bumped down the wood and continued 10km, about 100 degrees, stirred the wood again (do not know if it was necessary) seems to be better but thinks it gets too hot still.
Could it be the nozzles that are too small, 10mm diameter x 5 pieces, are maybe in the smallest, wonder if I dare to remove the nozzles and drive with only nut, it is 16mm in diameter.
There was a full hopper of 15km, about 40 liters.
Gas, air almost 1: 1 only about 1500rpm.

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I doubt nozzle size would affect hopper temp. They seem ok to me. The entire gasifier is probably on the small side, but I guess you’re already aware. So is mine. Slow speeds and low rpm should be ok though.
Personally I would try experiment with the shape of the funnel. Your high cone, reaching the entire hight of the hopper, could maybe be one reason for bridging. From what I understand that’s pretty much the only difference between our hoppers.

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I don’t think it brews so much with this wood, but don’t you think I make over with a lot of wood?
I wonder if I burn the gas somewhere, it would explain the heat and the amount of wood.
But since I almost have 1: 1 between gas
and air, that’s not true.

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Now that you mention it. My experience is a paper bag (Ica/Konsum ~30L) is good for about 30-40km. The hopper holds about two of them, usually an hour of driving.
How about hopper juice - do you collect any? Or does the hopper run too hot even to allow for condensation?

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I emptied the bottle now, a whole hopper of birch wood gave 0.75 liters.

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With only a 40L of wood that seems to be a resonable amount.

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@Wayne , I’ve probably asked you before but forgot what you answered, do you ever have any problems with tar with such a big restriction?

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Good morning Jan

NO tar :smile::smile:

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