Outdoor Wood Furnace Info
All-Purpose OWF Discussions => General Outdoor Furnace Discussion => Topic started by: hondaracer2oo4 on August 04, 2016, 02:18:29 PM
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First year last year with my g200. I would say I will get 2-3 seasons out of the ceramic nozzle before it needs replacement. Over on hearth forum a lot of guys have made steel nozzle plates that prtect the ceramic with good success. Has anyone over here made one and what are your thoughts?
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I know that some manufacturers have tried with little success, it gets pretty hot right there and typically the steel will warp and deteriorate faster than the ceramics do
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People over on hearth forum have had decent success with 1/4 and 3/8 flat bar stock. They say they can get close to a season out of one before it gets eroded away. They said the thicker stock doesn't warp up. They also said they really see performance drop off as the nozzle starts to erode. At my current rate I think I will get 2-3 seasons out of a nozzle before replacment. What is the cost on a new nozzle set? Do they come out easily?
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I haven't had to replace any yet so I don't know the cost but they are simply set in by gravity.
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You might get a year out of a steel one, I wouldn’t mess around though, break the half inch plate out.
I had a BIG dead ash I cut up, dang hunters screwed those climbing spikes in it, bottom two were broke clear off, found the lowest wth the Stihl 460 and a NEW chain :bash:
Cut around the rest then split it up and ran it all thru the G400, those spikes wouldn’t be around the nozzle area long and they were all ate up.
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I'm not sure why but those guys on HF really have a tough time getting their nozzles out of the ekos ad other euro type gassers. Talk about having to use a jack underneath to break them free or outright having to break them up with a chisel from above. The steel nozzle guard is just a sacrificial plate for them which they just throw on a new one when they get eroded which keeps the larger coals from making there way down into the lower chamber causing a lot of ash down there. They also seem to feel that as the lip of the ceramic nozzle wears away they lose performance or some reason. I can pick up some 1/2 plate stock from the local steel yard out of their bargain pile that is all end pieces of everything for reall cheap. I think it might be worth trying just to see if it keeps from wearing the ceramic nozzle anymore.
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I have thought about trying this also but I know it wouldn't last long with the extreme heat. As for the removal of the nozzle on a G Series, it's a piece of cake.
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A lot of good guys on HF, a lot of completely anal retentives too.
I could possibly see performance dropping off once the nozzle is wore enough, would basically create a rich condition as it would allow a larger flow of gas while the air supply remains the same, basically like an older gas engine with the choke stuck partially on.
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I don't think the heat is as bad as you guys think above the nozzle. Ash surrounds much of the nozzle itself and thus the nozzle guard would be covered in it as well. The nozzle lip would take some heat because of the preheated gasses passing through the coal bed, the extreme heat builds after the preheated gasses hit the secondary air injection that comes from the middle of the nozzle. I don't think the heat is much worse than on metal grates in a conventional boiler with air pushing from below through the grates.
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Yes a bunch of ar guys over there but a lot of smart ones in the bunch. Some stuff great in theory but in practicality doesn't add up to anything worth writing home about. Most hate OB over there and some aren't aware that the owb has made great strides in the last 5 years with their gassers.