Well, this is the current situation:
Videos will have to wait, simply because I haven’t made any yet. Pics from the building process I can upload as soon as I finish typing this.
I put down another 40 miles today. Slow speeds, 50 mph max, constantly keeping an eye on the temp guage. I can feel there’s a lot more power there, but I don’t want to push it until things carbon up and the charbed is properly settled.
With the Rabbit gasifier I could go full throttle, running 55-60 mph for 10 miles to work and the sheet metal cover around the gasifier was still cold to the touch when I parked.
With this gasifier the sheet metal is about two Mississippis hot in 10 miles and that’s running slow. Temp outof the cyclone reaches 300 C (572 F) fast. That’s when I back off. Running this slow with the Rabbit I would expect about 150 C.
It was my thinking using this grateless design the huge bottom charpile would soak up the heat good. I realise I’m running a bigger fire inside the same size vessel. Maybe I’ll just have to accept this system is running hotter.
I ripped off the crossover cover today, pressurised the system and blew cigarette smoke around the compression fitting to look for air leaks. I’ll have to try again tomorrow because the tennisball inlet valve let pressure out and the char woke up and heated things up again.
Experimented with shutting on and off the upper nozzles today. (The lower 5 nozzles are always on. The manifold for the upoer 10 nozzles I can shut off.) When all nozzles are used the vacuum ratio increases. Keeping the pedal steady and letting air into the upper manifold lowers the hopper vacuum. Ratio goes from about 2:1 to 4:1. It doesn’t affect the total (rail) vacuum, which surprised me. Maybe making the charbed a couple inches taller evens things out.
With a high idle running rich on woodgas I pulled the fuel injection fuse today. Shuts everything down. It seems it affects the ignition as well, so this is not the way to go. Sorry, Kristijan! I’ll try experiment with the vacuum hoses to the check valves for the fuel rail tomorrow. I was surprised to discover I have two. One on each side of the rail??? If that doesn’t work I can think of no other solution than an old school fuel valve.
The monorator is s success though. I collected almost a full gallon today. Quite a lot of wood was left in the hopper after shutdown (covered the funnel) and after cooldown another 1/2 gallon was collected.
Pew, my typing finger is running hot. I’ll switch to the phone and upload a few pics.