I have been building stoves since 1974. I designed the current version of the Kifaru stove in 2001 and built them for Kifaru until a couple years ago.
I have been playing around with roll-up stoves for about 5-6 years. Just over a year ago I posted these pictures of a stainless roll-up:
It's been a fun project and goes well with my weight purging quest on my gear.
In the past year I have built a number of prototypes but kept coming back to this basic design with a few improvments. When I finally had it where I wanted, I took the plunge and built the stove from titanium.
A few of the changes I made were to go from the 4 spring attachment to a more secure 3 turnbuckle attachment.
Another feature I wanted was to have a modular stove. In another words, I wanted a stove that I could switch out long and short bodies depending on the shelter I was using as well as the temperatures expected.
The image is of a 12" body.
This is a 22" body
Another thing I wanted was to have maximum contact for heat transfer depending on the cook pot I am using, so I built the support rails with a narrow and a wide position.
This is the narrow with an MSR Titan Kettle
Wide with a Snow Peak 1400
To switch between the long and short bodies all the needs to be changed out are 2 support rails and a cable
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http://i597.photobucket.com/albums/tt56/runsmtns/TiStove8.jpg[/img]
The 12 stove for transport can just fold the support rails back
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http://i597.photobucket.com/albums/tt56/runsmtns/TiStove5.jpg[/img]
For the long stove, the support rails are removed and stored inside the rolled stove body and pipe.
Another image of the 22" with 3 cook pots
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http://i597.photobucket.com/albums/tt56/runsmtns/TiStove7.jpg[/img]
The weights for the stoves are 12 ounces for the 12" and 17 ounces for the 22"
As far as heat capability, I have found cylinder stoves to heat better and burn more effecient than box stoves. The 12' will have heat output between a Kifaru small and medium and the 22" will be between a medium and a large.