If the gas is near it's boiling point, there will be little pressure in the canister (by definition), so the "needle" valve (I've yet to see a canister stove with a true needle valve) will be fully open to maximize the gas flow. The only pressure drop will be across the jet. All the same, I was impressed by the technical terms you tried not to use but did.

+1 on the post beer and pizza night design

If the tube is before the needle valve...

"I suppose a simple way to test my heat feedback theory is to run the stove for a while and then feel the top of the canister. If the top of the canister is at all warm or even simply room temperature, then there's heat feedback going on. Normally, a canister should be pretty cold after a stove has been in operation for any length of time."

True, that. Absent a windscreen I often find canister temps drop during use, I suppose from evaporative cooling.

I'm still lobbying for further disassembly. Inquiring minds want to know!

Cheers,

Rick

My recommendation to actually use the pre-heat tube to best advantage is to get a Brunton "remote canister kit" that converts a canister-top stove to a remote stove. REI sells them.

With this kit you also should then get a new angled MSR plastic tripod stand (from their new multi-fuel stove) to invert the canister. Then your stove's heat tube will function in colder weather.

That said, I still rely on my MSR Dragongly liquid fuel stove for cold weather B/C it's utterly reliable. Haven't used my ancient (1971) SVEA 123 for over a decade.

Sorry, no further disassembly: might be destructive.

lol. Yeah, cutting a stove in half just *might* be destructive.

Any interesting in running the stove for a few minutes to see if the uppermost portion of the canister stays room temperature or above?

HJ

Maybe there is an option to use other fuels that need the preheat tube, such as white gas?

Well, considering that it has threads to screw into a canister (just like a Pocket Rocket does), probably not.

HJ

I for one would love to see this thing taken apart to determine if that is indeed a pre-heat tube, or simply a heat conductor. Functionally there would be very little difference on an upright canister.

Blimey. I think that has to be a classic example of a totally confused design team. Taking the stove as shown, there is absolutely no reason for the preheat tube to exist.

One explanation is that the stove was an very early Chinese produuction, where the Chinese had no idea what they were doing!

Nicely made, but wierd ...

Cheers

Edited by rcaffin on 09/16/2011 01:55:11 MDT.

Thanks, so I suppose the only possible reason is to avoid flaring if knocked over: knocking it over still dangerous though. :)

Edited by ahbradley on 09/16/2011 06:59:58 MDT.

According to the label, was made in England.