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| Potty Popcorn Engine |
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| sbwhart:
Hi Dave It was just low melting point stuff, with easyflo flux, I planned to do it in one heating, the boss for the stem solder great first time, but I did struggle a bit to get it to fill the joints had to have a couple of tries, for the boss I just rapped a ring of solder around the joint, for the butt joins I just laid a length of solder on the joints, but I had to fill them with the rod on the reheats:- must have used about 5" of 1.5 mm dia solder at £6.50 for 18" thats about £2 worth. I use the cadmium stuff our boiler inspector at the club buys it in bulk from someware to sell onto members. Johnson Mathy don't supply the cadmium stuff, but other supliers still make it, don't ask me who though. I know their is a health and safety issue cadmium, you must use it in well ventalated room, I just drag my soldering hearth outside, you can't get better ventilation than that. Stew |
| Bluechip:
Hi Stew I tried to do some the other day. I could not get full penetration. :doh: I had to feed in to get it to work. After putting 4 centre pops on one bit to make a small gap. Just wondered if you had flattened some in the joint ?? Mine is Cad free 440 from CUP Alloys. 640 C to 710 C IIRC .. I was just soldering two flat bits of 3/4" x 1/4" overlapped by about 1/2". ________ __________ Sort of that-above-ish ... :scratch: BC |
| doubleboost:
Hi Stew Engine is coming on nicely A good bit of fabrication and soldering :thumbup: :thumbup: On the valve chest John |
| Stilldrillin:
Really nice work on the valve chest Stew! :clap: :clap: :thumbup: David D |
| lordedmond:
BC it was not hot enough the new cad free stuff wants a lot more stick to make it flow , it seem to be a bit sticky to me also use bogs favourite flux Tanacity 5 ( its a high temp flux and has a longer heating life ) Stuart |
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