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| New project, semi internal combustion atmospheric engine! |
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| John Hill:
I had a chance to get back on to this project and made the two cylinders and water jackets. :coffee: |
| Manxmodder:
Hi John,just a couple of thoughts on fuel and wicks. Lighter fluid as used in Zippo type lighters burns very clean,is easily ignited and resists being snuffed out by draft or breeze so may be worth investigating. On the subject of wicks,I am a user of electronic vapourising cigarettes and use 3mm silica glass fibre wick to rebuild my vapourisers. Here is a link to an ebay silica ecig wick seller: http://www.ebay.co.uk/itm/like/161012184899?limghlpsr=true&hlpv=2&ops=true&viphx=1&hlpht=true&lpid=108&device=c&adtype=pla&crdt=0&ff3=1&ff11=ICEP3.0.0&ff12=67&ff13=80&ff14=108 Also on the subject of glow plug wire,the ecigs use canthal wire for the hot vapourising coil and this can also be purchased in various resistance values from sellers on ebay and other sites. Link to canthal wire on ebay: http://www.ebay.co.uk/sch/i.html?_from=R40&_sacat=0&_nkw=kanthal+resistance+wire&_nkwusc=canthal+resistance+wire&_rdc=1 ......OZ. |
| vtsteam:
John, any further word on this engine? Did you try the oven soldering mentioned elsewhere? A friend of mine, a whitesmith, did some forge brazing as a demo for me when I asked him about it. It was a piece of cake to him, and he brazed a couple of fairly massive pieces together in a couple of minutes. Basically it was just a matter of wiring the two pieces together temporarily, so they wouldn't move, heating the assembly in the forge, and applying the braze rod, which wicked in by capillary action, almost instantly. The oven soldering should work similarly at a much lower temperature in any oven capable of 450F or so. |
| John Hill:
Hi Vsteam, I never got to try the oven soldering! I guess I wimped out somewhat! I brazed a couple of the major bits so they would be stable then used a hot air gun and a big soldering iron to tin all the mating surfaces then heated each piece and sweated it in to place using more hot air where required. Maybe a forge would be easier than an oven, but I dont have either! I wondered about forge brazing, what happens to the flux? Did he apply any or just clean the metal to bright? John |
| vtsteam:
Hey John great to here you back! I don't remember completely, but I think he did not apply any flux. I remember thinking, gee, this looks a lot easier and faster than what I always end up doing (and my results also were a lot more iffy). And the heavier the mass of the parts, the worse it is, for me, normally. Takes a lot of heating to get something big red hot with a torch. He was using coal, by the way, and buried the parts in it to start with while applying draft. I've seen a lot of impromptu forges online made out of just about anything (brake drums, baking pans, bricks,) , and even remember from Weyger's blacksmithing books a vertical forge made of a gallon paint can, with some stovepipe chimney for draft, hung from a tree. Seems to me just about any receptacle, supplied with any form of draft, given some charcoal will probably do the trick. True, purpose built forges with insulation, a blower, propane burner, etc. might be classier and more efficient, but no reason not to try to use what's available, rather than go without --- if our interest is up..... that's my tendency :) :beer: |
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