Mooching around the toy box for something to do I had the idea of using a spare stove pump to make an air pump to keep in the said toy box (shed) for use with 199 - 8r - 123 etc when fettling, it may be of little interest to anyone, but it saves having to look through your camping kit to find a mini or midi pump. The donor was a truly knackered Primus No 5. To make one, all you need is a complete pump assembly removed from the tank of a no hoper, the simple way is to remove the non return valve and then drill out the threaded hole to a size that just slips over a pump-able fuel cap, now all that is needed is an O ring slid over the cap & the pump will seal to this when pushed down firmly. Now for those still awake, and with the equipment - - - A shorter version can be made - - - Unsolder the NRV end and shorten the tube & the pump rod by equal amounts, I used a steel pump rod to make things easy - - just cut some out of the middle and then but weld it together, you could use a brass rod if shortened from the end & then re-threaded for the knob. Drill & re-solder the end into the tube. Job over - - unless you have a way of cutting a groove inside the hole - to take an O ring, I did mine using a wood lathe & a pre shaped scraper, brass is softer than you might think HERE IT IS ON A STOVE - - & WITH A FULL LENGTH PUMP & WITH A MINI & MIDI END VIEW
Hi Jules Very impressive work. A question: When you shorten the pump tube, how do you 'fill in' the end again (as in your photo #4)?
Nice - looks a lot more 'old school' than the original! If I'm not mistaken Handi Albert did something similar a few years back (hope he's just on holiday - not heard from him in a while). I think I have one of his somewhere.
The complete NRV end unsolders - - shorten tube - - solder end back in. Ross, coincidentally I was thinking Albert was a bit quiet at the moment. Hope I haven't (unknowingly) stolen his idea.
I just check in from time to time, mostly not regestering. I have to keep a close eye on you blokes just to make sure the regulars are handling the questions ok. Well I did play about with this as Ross said. But I couldn't work out how to get the correct angle on the bent one. JC I posted things here to help people. If I didnt want my ideas used I would not of posted them. So please keep up the good work. If you have a problem think about it, The answer normaly will come to you. If you have an idea try it. Some times the idea is bad but don't mention this one, and mention the good ideas. Good luck
As previously posted, I have made up pumps for my 8R stoves using a 4 inch length of 3/8 inch I.D. hose ( old wash machine inlet hose ) and a Shrader valve. Put the hose over the filler cap ( it fits fairly tight ) and then pump air into the tank using bicycle pump. Use just a few short pumps at most. Works fine. Unquestionably better than the " store bought " mini pumps and certainly cheaper. More dangerous too, but hey, are'nt some of us just possibly undiagnosed firebugs ? Have not lost eyebrows yet. Pretty close, once or twice on the house, but no eyebrows yet. Ken H. Ken H.
