Peter van den Berg

The batchrocket.eu site is running as complete as it can be, thanks to Sebastian. The DNS server is pointing to the copy now, the certificate is in place and recognized. Even the temporarily address is pointing to the site copy.

What need to be done next is choosing a Static Site Generator and rebuilding the site. The whole process could take quite some time, but it need to be done in order to be able to adjust and modify the site from home in an easy way. Which is meant as an ongoing process, due to the aim to add other designs and applications when relevant.

As it is, a copy of the site is running on a server in France. The address batchrocket.eu is pointing to that server now, but the safety certificate isn't in place yet. The site is accessible, although without https.

The article about the DSR3 and the Shorty core in the Dutch version are reinstated. Google Translate is able to provide a passable translation.

Sebastian found the source of the broken links and implemented a fix. As far as I can see, all pages are properly linked now.
What a luxury.

Dear readers, one of you lot, Sebastian Köln, offered to retrieve the batchrocket site from archive.org and having it running on his server awaiting a more permanent solution.

At the moment it isn't complete, some of the links aren't working properly but most of the information is there. The latest information about DSR3 and Shorty core isn't, but that was only available in the Dutch version anyway.

You do need to have a look? Go to https://batchrocket.artisan-ma.net/en/

Any relevant changes of the situation will be announced here. In short: I'll keep you posted.

Batchrocket.eu is offline, the site has been hacked following a massive attack on Tuesday 7th and Wednesday 8th.

The webmaster is looking into the problem, it could take some time to get it online again. Mostly because the webmaster is a volunteer, with a busy professional job in a very different field. On top of that, the site is/was running on a server of a private person.

I'll keep you posted about developments.

Matthew Galloway wrote:Ah 30cm thick ceramic fiber was a mistake - I meant 30mm!
There is 10, 20, 25, 30, 40mm high temp ceramic fiber blanket available here. I could do 20mm or 25mm if you think that is sufficient instead of 30mm.

The 20 or 25 mm thickness are both sufficient.

Matthew Galloway wrote:Ah I didn't understand the the depth/length of the firebox could be extended. In the Sketchup design it made it to exactly 376mm from the backside of the door to the front wall of the port wall, but if it's recommended to be larger to provide more space for wood positioning, I can adjust my design.
The common length of firewood around here is only 30m, so maybe I'll bump up the depth of the firebox to 430mm. How does that sound?

Normally, an extension of 25% more in the depth of the firebox is within allowable tolerances. So, 430 mm is a nice figure to go for.

I checked the drawings just a minute ago. It looks like the firebox of the Shorty core is lacking in depth. According to the formulas, this should be 376 mm or up to 25% more of that figure. People tend to think they can tailor the depth to the firewood that is available to them. That's OK, but you'll need some space extra in the front and rear end of the box as well. Say, something between 25 to 50 mm at both ends.
Just to let you know.

Matthew Galloway wrote:You make a good point about stability especially since effectively this batch box will be raised 80cm above the ground to match the floor level, making it more vulnerable than a masonry heater closer to the ground level. The support bricks below the subfloor will all be mortared on the 15cm face for stability, but perhaps I will reconsider the bell design to utilize the stability of the 15cm clay brick face for the bell walls.

Would be a sensible thing to do. Maybe even a vertical angle iron on the four corners, held together by steel strips.

Matthew Galloway wrote:I do still intend on building the core on the 6cm face of the refractory brick, but I can reinforce that with a steel frame.
Since we're on the subject, do you think it's necessary to place a layer of clay brick alongside the sidewalls of the core or is it sufficient to just have the steel frame and wrap the core and riser in ceramic blanket? I'm thinking 30cm thick ceramic superwool.

I think it would be sufficient to have a steel frame around the core. Insulation of the core could be done, but 30 cm looks like grossly overkill to me. I'd suggest to use Morgan Thermal Ceramics Superwool 25 mm, this is sufficient in most cases.

Matthew Galloway wrote:
Now I'm working on the bell and realizing with the 30x15x6cm clay bricks available here that would suggest stacking the bell bricks on the 6cm edge to keep the profile of the bell as small as possible.  So I'm going for a cube shape of about 90x90x90cm on the exterior.  Is stacking on a 6cm edge with clay bricks reasonable or should I change my design to stack on the 15cm face instead?

Bricks on edge for the bell could be done, especially when the bell will be plastered. But... you mentioned that you are building in Chile, in an area with refquent earthquakes. Un der circumstances, is it wise to have the bricks on edge and what is the plan to keep the heater together in the event of an earthquake?

Matthew Galloway wrote:I'm just under the Shorty ISA for 130mm at 3.38m2 (adjusted for shorty) if I stack clay bricks on edge, with the bottom of the core 26cm from the bottom of the floor, and with 30cm of air gap on both sides between the inner walls of the bell and outer walls of the core. I'm also assuming with a shorty it's ok to have the ceiling of the riser in contact with the ceiling of the bell, but if this isn't advised I'll adjust the design to be a bit taller and narrower.

Best to keep some distance between the top of the core and the bell's ceiling, say 10 cm at least.