Well I had a P plate before but it was too thin and got pushed out of shape, I made this one from 2mm s/s and it definitely works better than my first attempt. I need to do a few more fires to test various potential settings, it has been a really hot summer and it has been uncomfortable testing the fire but winter is coming!
There is a big difference between the high mass and low mass riser though, I am not even sure what the difference is but the fire behaves in a different way. I know the low mass heats up the system quicker but it also drops the temp quicker..... I liked to see the high mass riser glowing red and orange. There is more to it though, I need to test both risers again especially now I seem to have a more effective P plate. There is something I don’t like about the blanket riser.... One thing is for sure, I love looking down the riser, when it is hot, you can see the secondary air sort of pulsing. There is a picture right need the end of my last vid that just catches a pulse of secondary air.
A bit of an update... I had the stove going with the high mass riser back in place. It most definitely takes a lot longer to get to 500c but it still gets to 220c in around 15 mins or in about the same time as the blanket riser. However once I get that flame right up high in the riser I can reduce the burn rate and still maintain that amazing colour flame just lipping the top. With the low mass riser I can only get that to happen with a continuous supply of wood and full air flow, or a lease I have not found a setting to keep the flame high without a full fire. I will have another swap around next weekend....
Hi Piet, the top plate is made in two rings of 6mm mild steel. The 30”outer ring is bolted in place to the cement ring around the barrel top, I then have an inner 20” ring that is bolted to the outer ring with 15mm fire rope in between. I think you definitely need two pieces to avoid over warping , the outer ring will noticeably concave but the inner ring remains pretty stable. This system seems to work very well as any food juices run toward the centre, I don’t think a single piece of steel of that size would work. The top has an oiled finish that cleans up fine when hot, I would love a Stainless steel top but unfortunately that is outside my budget!
No sorry, I was really busy and rushed so I did not take any but I will make a new vid (easier to put up on this forum than pictures) Certainty a powerful stove now, of course I don’t know if the vortex or the big fire box is responsible for the improved performance or if I am producing more or less pollutants! However from my perspective it seems to be working extremely well. I won’t have a proper chance to test it out for a few months though as the weather is warming up fast and I tend to cook outside as it gets to hot inside the summerhouse. I made the box useing the same method as the previous one, cast refractory and a wood and foam mould, I am using my original refactory riser. I think the highest temperature I recorded on the first version was 520c on the top plate, we saw around 610c on the first run with the new model. However, I don’t need more heat but, to sustain it at a more constant temp for longer periods, so I need to play with the air supply and see what other adjustments I can make.
martinm: any one here with info \ experience with heat (from a mass heater) distribution with ducts throughout two storey house ?
Sept 8, 2018 22:58:52 GMT -8
padica: Good morning, this is a wonderful subject, please someone can help me with the theme of double and triple combustion, how it is achieved, theory and design, thank you
Sept 15, 2018 7:13:40 GMT -8
wiscojames: I'm afraid you won't get a response to such a vague question - I suggest reading through some of the threads related to your questions before asking for an explanation. People will be very generous with their knowledge if your question is more specific.
Sept 18, 2018 4:48:00 GMT -8
daniel: in my experience as I am working now on something of that nature, I have thought of making a heat exchanger and distributing the heat through vents using a slower fan. Now after a few years I realize that mass heaters give out primarily radiant heat, for
Nov 30, 2018 12:48:38 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place...
Dec 16, 2018 18:10:49 GMT -8
vesuvius: High Temperature Glass options,
Jan 4, 2019 16:28:17 GMT -8
vesuvius: Do any of you have experience with using the glass from home oven doors on a rocket stove? I'd like to have a viewing port on my stove but don't want to fork out for new ceramic glass. Any thought as to whether it would take the heat of a rocket stove?
Jan 4, 2019 16:30:40 GMT -8
yaya: you dont need the blowair for that temp..
Jan 13, 2019 16:43:57 GMT -8
flybywire: Glass window from an old washing machine is designed to take high temps. Cheap solution to your need.
Jan 27, 2019 0:10:58 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place to have a discussion... it is for short announcements
Feb 7, 2019 0:11:23 GMT -8
coastalrocketeer: you won’t likely get replies to questions here, and it is not a spot that makes holding an ongoing discussion possible...
Feb 7, 2019 0:12:22 GMT -8
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
Aug 20, 2019 18:41:48 GMT -8
mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
Aug 23, 2019 13:33:44 GMT -8
topbaza: hi everyone, been searching all over net and this is were i need to be i think!!
Sept 28, 2019 6:16:25 GMT -8
anounaki: Hi, why I cant upload photos when I make new tread to this forum?
Feb 28, 2020 2:09:40 GMT -8
ahansen: photos under 1 mb not possible?
Jun 4, 2020 0:09:21 GMT -8