As you may know, Stephen Parks and I simultaneously came up with a good way to raise the Jetboil pot higher above the BRS-3000T stove burner than what Josh Leavitt's stove leg mod does. This allows using a medium flame setting without quenching, which allows a faster burn with the same fuel consumption. There is a discussion of the merits of raising the pot at the end of the thread below;
Using titanium foil for the "pot riser," I went through several 4 oz. fuel canisters and 1.5 square feet of foil to test some prototypes. I think I've finally figured out the optimal dimensions for a riser disk that is light, durable, and which allows the full flame to pass through unimpeded to get to the pot.
I gave my design to Josh, as a way of thanking him for initiating the BRS-3000T mod for a Jetboil cup in the first place. I thought he might want to include a riser with his kits. I had intended to make some of these to pass on to the members of BPL, but Josh offered to make a batch to my specifications. I was happy to pay his price for these, as he has the machines to do clean cuts in a professional way (mine are somewhat crappy, though fully functional). The disks are made from CP foil that is a burly .008" thick, and the average weight is 3.6 grams each. Here's what they look like:
The riser disk, which is inserted into the bottom of the Jetboil cup and contacts the bottom of the fins.
This one shows the disk nesting inside the pot bottom. The support arms of the stove rest nicely on the disk, and this effectively raises the pot to the proper height above the stove burner for efficient boils.
This riser setup offers several advantages over the original "place the bent support arms between the fins" approach. First, it positions the pot at the right height above the burner, which allows one to employ a medium flame setting without the quenching problem. I am able to boil 2 cups with a medium flame setting in about 3:00 minutes, consuming an average of 4.5 grams of fuel. With the "supports in the fins" technique, I could only use a medium-low flame setting to avoid quenching, and it would take about 5:00 minutes to achieve the boil, but still just consuming 4.5 grams of fuel. So…a faster burn. Not quite as fast as a stock JB stove, but about the same fuel efficiency (and a lighter setup!)
It is far easier to place and remove the pot from the stove with this disk. The supports-in-the-fins arrangement is a little finicky. To place the pot on the stove, you first place the pot over 2 of the supports, then position it so that it slips over onto the third one. Easy. Removing the pot is even easier, as the stove's support arms swing upward and out of the way when the pot is lifted.
With the pot sitting on the riser, you can spin it around to position it wherever you like, unlike the fixed position of the supports/fins technique. Of course the latter provides a very stable and secure pot-on-stove arrangement, but that might be a bit of an overkill. The pot/riser can't slide off the stove easily, as the stove supports hit the inside of the pot's bottom. As long as you set the canister on a level surface (which I assume we all do), everything is quite stable.
A couple of other comments:
The inside ring of the disk will take on a patina with use, it being close to the flame. This adds character, IMO.
It is best to position the disk such that the slit isn't near where the support arms will be. The supports could slip through to contact the fins. Most likely it won't be a problem, but it's easy to avoid this possibility with proper positioning of the disk. Also, when the pot is rotated, the disk usually moves with the pot (more frictional contact with the fins than with the stove support arms). This could result in a support arm getting hung up on the disk's slit.
These disks work well whether you have a stock stove or one where you've bent the arms. They also work with a FMS-300T stove and an Olicamp Ion. I checked out the fit of the smallest stove REI had (the Snow Peak LiteMax was all they had in stock), and it DIDN'T fit. Maybe the Soto will?
Now it's time for me to mention what the BPL Exclusive Deal actually is. So that Roger won't whap me, I am only offering these disks to BPL members. To buy one, you must first do a post on this thread, saying you want one. That way I can see F, M, or MLife next to your name. Then, send me a PM to get my PayPal e-mail address and we'll take it from there. I am not able to mail these outside the U.S., sorry. The cost would be prohibitive.
I am offering these for $10 each, which includes shipping and everything. I know, I know, that's about what the cheapest BRS-3000T sells for. Keep in mind that I have misc. costs like PayPal fees, postage, envelopes, and gas to get to the post office. All I'm trying to do is cover my costs, which includes the R & D to get the design right. Another thing that makes these a BPL exclusive deal is that this is the only place you can get one. Josh indicated that he will not be selling them as individual items, but rather that they would be part of his stove/lid bundle. Depending on the demand, I may or may not ask Josh to make another batch of these. If I do, I will likely need to raise the price a couple bucks to make it worth my effort. But for now, I just want to pass the concept on to my buddies here on BPL.
