Will you do a stove-of-the-week on Svea 123 / 123R? I am seriously thinking about trying to find one of the old ones. (But with the additional pump).
I will be doing a post on the Svea 123. It's a few weeks out yet, maybe mid-March. My plan at this point is to do the 123 and 123R as separate posts, but perhaps it would be helpful to compare and contrast the two.
Regarding the pump: They're nice but not at all necessary. They will boost output, and they will help with starting the stove in cold weather. However, they are generally expensive, and as I say not necessary, even in cold weather. In cold weather, do a double prime, that is prime the stove twice. Note:
Do not open the fuel tank between primes. If you open the tank when the stove is hot, you could have a most unpleasant fireball. "Unpleasant" is putting it mildly.
One consideration with the Svea 123/123R is the SRV (safety release valve). If too much pressure builds up in the tank, the SRV could pop, releasing a hot cloud of vaporized air and gasoline. Needless to say, this is an explosive mixture, and it normally bursts into flame. That would be bad. I tend to be conservative in the operation of my Sveas. I keep the flame at moderate levels, and I tend not to use the pump. Like I say, I'm conservative.
As with any stove where the fuel tank is directly attached to the burner,
great caution should be taken if a windscreen is employed. If you trap too much heat near the stove, you could have a fiery disaster on your hands. If you do use a windscreen, keep a close watch on the stove. If it starts to sound like a runaway freight train,
turn it down. If I employ a windscreen, I leave it open on at least one side, screening only about 2/3rds of the stove. This helps cut wind but allows enough air circulation that the tank doesn't overheat.
Another caution: boiling water is 212F/100C (less at altitude but suffice it to say it's hot). If your pot boils over, you are rapidly applying a lot of heat to a vaporized air and gasoline mix that is under pressure. Letting your pot boil over on a Svea 123/123R could have very severe consequences.
Now, having said all that, there's a reason that the Svea 123 (which was introduced ca. 1954) is still in production today. It's super reliable, and many people swear by it to this day despite the availability of much lighter, more modern stoves. Please don't get the impression that I'm knocking the Svea 123. Actually my view of the Svea 123 is anything but that: it's my personal favorite out of all of my stoves. Just be aware that many of the safety features of modern stoves simply do not exist in the rather Spartan Svea 123. With a Svea 123,
you are the safety mechanism. Get it?
HJ