Wood Gasifier Grate Mod / test 052416
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- Опубліковано 5 вер 2024
- This modification is an attempt to relieve the packing of charcoal at the sides of the grate. Also seems to increase gas flow and offer better response to the shaker by removing the used charcoal and aiding the movement and flow of the enriched fuel wood. Funny , I couldn't figure out why the Honda would not start--until I reviewed the video. Anybody else catch it?
Howdee Bill,
I think you are on the right track here.
Those bigger holes, and the slots near the floor of the grate ought to free up the charcoal flow quite nicely.
You are getting a huge quantity of gas from your system, and I am sure it is going to be way more than your 13HP engine will be able to consume.
At a guess, you could happily run an engine of at least twice that size, possibly bigger.
You have created a fine beast, just as the woodgas bug ordered :) .
Howdee Bill,
I seem to be having the same problem with mine, now that the new engine is pulling more gas through the system.
After 31 hours on the new engine, the reduction zone - and the grate are packed up, real tight.
It's so bad that the engine is trying to suck the gasifier down into the plumbing, so it looks like I need to modify the gate in the same way you have done yours.
I blame the Woodgas Bug for this ;) .
Steve, That's a bummer ! As you know I cut horizontal slots in my grate about 1/2 inch up and along the ring . Since then I added on strips to close them up a little bit and I think I'm there now. It allows the hard pack to exit with a moderate rattle of the grate . I'll take it out and get some pictures and measurements for you in the morning and send it along.
thirty one hours ! impressive. !
NH Hbbyloggr
Howdee Bill, Thanks kindly :) . This is a bit of a bummer, as I need to pull the gasifier completely apart to get access to the grate - so I can make these changes. Since its interior is so different from the Flash001 design, I may need to look into other options, as the charcoal flow path is quite different too.
Still, I think there is room to try out your horizontal slots idea. That, and some holes in the floor or my grate just might do it :) .
Keep gassing those Woodgas Bugs, my fellow tree fumes addict :) .
Steve, You have me scratching my head over this new problem. I wonder what changed ? Air flow volume requirements of the new engine Vs the old one? I am finding that the increased draw from the bigger engines makes the gasifier run hotter and cleaner. When you figure out what the cause of your back up is you will have unlocked the mysteries of the universe.
.
BTW I also drilled out the holes in the grate to 7/16 . It only seemed to help a little bit with the packing of the char. But the big difference came with the addition of the horizontal slots.
NH Hbbyloggr
Howdee Bill, yup, I think you are onto something there with those hozarontal slots. Mine has vertical slots that are about 1/4 inch wide. The charcoal that slips through is really small, and it resembles coffee granules in its overall size and shape. Perhaps my approach to this has been overly aggressive, as this results in a low output rate from the gasifier that is often not visible, is quite cold, and burns with a mostly blue flame.
If I open it up a bit, I am sure the whole system will breathe easier :) .
It will be nice to find that happy medium.