The Evolution of a Winter Stove - Part 3
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 jerry adams (retiredjerry) - MLife Locale: Oregon and Washington Re: Re: Re: Cliff Notes on 10/09/2013 20:16:34 MDT Roger's stove has the canister remote so you can turn the canister upside down so you can use it in colder temperatures. Regular canister stove is good down to maybe 25 F. Inverted should be good down to boiling point which is maybe 12 F. Also, the burner is lower in the air so less susceptible to wind.Roger's articles are worth the price. He addresses a number of problems and goes into infinite detail.14 L boiled out of 100 g canister?I use 1 oz per day. there are 3.5 oz in 100 g. I boil 64 ounces of water = 2 L. That's 7 L boiled from a 100 g canister. Hmmm - where's my factor of 2 error?
 Rick M (rmjapan) - F Locale: London, UK Re: Re: Re: Re: Cliff Notes on 10/09/2013 20:42:31 MDT del Edited by rmjapan on 06/19/2015 17:01:59 MDT.
 James Marco (jamesdmarco) - MLife Locale: Finger Lakes Re: Re: Re: Re: Cliff Notes on 10/09/2013 22:09:25 MDT Jerry, 8g/.8L was quoted as the lowest Roger gets at medium heat. I was reducing his numbers a bit due to three things: ** a cone type setup(Roger doesn't use one) ** a heat exchanger pot(about 10% more efficient.) ** using LOW heat (Roger was using medium heat.) I figure about 2g/L for all three items, roughly. I was hoping for 5-6g/Liter or .2oz/L but I don't think that will happen. I get about 9g/L out of my SVEA with the same set up. I know that canister gas has a higher heat value than WG initially(before adding in the weight of the can,) but I am ignoring that. I am also ignoring the gram or two difference that is wasted during priming (I actually added that in when I measuered the SVEA because I used a midi-pump to start it, but the canster stove wouldn't require any priming.)Anyway, max efficiency should be about 10-12 minutes to boil a liter with about 8g of isobutane/propane. I am sure it will not do WORSE than my SVEA. I get roughly 3-4 liters per ounce(average 9g/L.) If I am cooking meals, I figure two liters per day including 2 primings and simmering for about 15-20 minutes on one ounce of fuel. Hey, ha...I eat like two people when I am out...
 jerry adams (retiredjerry) - MLife Locale: Oregon and Washington Re: Re: Re: Re: Re: Cliff Notes on 10/09/2013 22:59:44 MDT Looking some more at Roger's articles, he talked about 9 g to boil 1 liter for Jetboil, 11.5 g for conventional upright, close to what you're saying. I assume his stove will be closer to 11.5 g since he has no heat exchanger. I bet some measurements will be posted at some point...
 Mark Fowler (KramRelwof) - MLife Locale: Namadgi Why 2 x 100g canisters on 10/10/2013 00:07:58 MDT James - Why carry 2 x 100g canisters rather than a single 230g canister? 2 x 90g = 180g canister weight versus 135g. The weight saving more than covers the extra 30 grams of gas and extends your range by a day. Edited by KramRelwof on 10/10/2013 00:09:18 MDT.
 Roger Caffin (rcaffin) - BPL Staff - MLife Locale: Wollemi & Kosciusko NPs, Europe Re: Re: Re: Re: Re: Cliff Notes on 10/10/2013 01:27:58 MDT > I'm sure they would be IF that was the kind of detail that I wanted to know. But its> just a stove. I really don't care about the minutiae of its operation and manufacturing Heresy and blasphemy!!! :-)> If its good, reviews will start popping up in other forums.Only if I decide to sell it outside the BPL environment. That is not a given. This manufacturing thing is hard work!Licensing to another manufacturer? Maybe one day.Cheers Edited by rcaffin on 10/10/2013 01:28:56 MDT.
 Roger Caffin (rcaffin) - BPL Staff - MLife Locale: Wollemi & Kosciusko NPs, Europe Second Shipping on 10/10/2013 01:45:22 MDT Hi allI have previously shipped 8 of the stoves with the FMS-116T burner some time ago.I am happy to report that the current batch of ~30 stoves have all been through their final burn test and been packed up into boxes. The back block is double thickness (ie 2 layers) and is for USA. The middle layer goes to Europe - we have quite a few European readers.The front small group stays within Australia.What boggles me is that I can buy 'little things' from ebay from Hong Kong for \$2, and that includes packing and postage. How they do this is beyond me! The cardboard boxes cost nearly \$1.40 each, plus there's bubble wrap and packaging tape. And you KNOW what the postage is like. (Does the Chinese gov't subsidise exports this way? Hum ...)Anyhow, most of the orders I have received so far are in this batch. A few of the latest ones missed out because I ran out of stove bodies. Sorry about that. But yes, I have all the other bits, so it's back to the mill for more stove bodies tomorrow.Manufacturing & production is SO different from scientific research! My respect for the manufacturing industry goes up.Cheers Edited by rcaffin on 10/10/2013 15:15:35 MDT.
 James Marco (jamesdmarco) - MLife Locale: Finger Lakes Re: Second Shipping on 10/10/2013 04:36:16 MDT Roger,I don't/can't do much winter camping any, so I can wait. Send mine along when you get the second batch done. Thanks!
 James Marco (jamesdmarco) - MLife Locale: Finger Lakes Re: Why 2 x 100g canisters on 10/10/2013 04:53:58 MDT Mark, I have found that cannisters are generally unreliable. I have lost 2 in the one year that I tried them (back when the Coleman F1 was newly released.) Both had problems with the Lindal valves and emptied in my pack after using them. One was the older Coleman, the other was a Snow Peak. I have not heard of this happening in a couple years, though...not since they fixed the valves to be standard for all stoves. I hope it was a tollerance problem, hence fixed. But, I'll stick with two 4oz cans for the next year, even if they are heavier.