Ha, he wanted to be a firefighter for this years carneval. Guess what the moustache is made of. Daddys motor fuel
Now for the woodgas part. Prior to the 80 mile roundtrip l emptyed the ashpit, shook the grate and cleaned the filter.
Here you can see inside the towel sack. A thick lair of dust over it but the inside is still clean and dust free.
I toped up with 50/50 mix of charcoal/wood. With the system all clean and breathable l can open the air mixer valve 100% and still run a bit rich.
This was the first real highway drive. One video is in my previous post, it was shot soon after joining the highway.
I never intended this system to be a highway machine. Top speed of 50mph is what l amed for when building it, rest l planed to top up with petrol. But l decided to see whats the top most power the system can produce so l went fifth gear and WOT, for a while top speed was constant 90-95kmh (58mph) like you can see in the video. Keep in mind my speedometer shows 7-10 kmh too litle.
But then something weird append. The car just kept pulling and pulling and l reached 110kmh on pure woodgas! And that was not just temporary power, it maintained it for about 20miles. Hopper vacuum rised, hopper temp stayed at working temp (60c).
How such a tiny gasifier can produce that much good gas is beond me. My first guess was the gasifier was owerdrawn and l was runing on rich tary pirolisis gas. But no! Not a trace of tar was found later anywhere. Just dry dust and the throtle is nice and loose.
My guess is when the system got hot enough the superheated air alowed the wood to burn fast enough to keep up with demand.
At the way home the charbed started to plug and l was back to normal power and l had to restrict the air a bit. If l had a remote grate shaker l wuld have the power again.
This is our drive back from the event. Gasifier not quite up to temp so l pushed the hybrid throtle geting out the roundabout. You can see the hasitation l talked about earlyer. First wery lean, allmost stalls, then it pulls good on petrol.
And a bot refuel.
I am so sory for the rotated video. Wife held the phone wrong way. If you can, look at the video on the smart phone with screen locked.
Ofcose things always go wrong when you film the wood sack got stuck under the daughters seat.
Anyway, l open the hopper lid slightly for the engine to draw the smoke. You can see even thugh l use wood there is not much hopper smoke! Or temperature for that manner. My guess is charcoal being such a good insulator and radiationt absorber, it prevents heat to escape in the hopper much. Plus l have a restriction between hopper and firetube.