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| Small simple turbine engine |
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| cfellows:
Very Nice, Arnold. It's a very pleasing engine to look at, near or far! I might have to try one of those, but I'll probably use ball bearings... Chuck |
| arnoldb:
Thanks Benni ! Rob, thanks mate :beer:. I don't know how fast it gets there... But fast enough for me to chicken out and not let it run faster :bugeye: - maybe 10 to 15 thousand RPM :scratch: - I need to get/build something that can measure it though :dremel: Its gets scary; just sits there and whine - and no indication that anything's wrong... I took good care to keep things right but still, that "what if" pucker factor is there... :beer: Robert. :lol: I thought stuffing around with small screws was a personal "punishment" :lol: - I got over it; if I can't buy 'em I make 'em. All part of the fun. A pain in the behind sometimes, but still, well worth the effort :thumbup: Then again, maybe I'm a bit "nuts" myself. #2-56 isn't all that bad! Thanks Chuck. Ball bearings would work a lot better! - I'm saving the ones I can get my grubby paws on for some machine mods though. And for building your horizontal 4 cylinder :D :beer:, Arnold |
| fixit:
Thank's for showing this build i'm still looking over your sholder learning and getting ideas Steve |
| doubleboost:
Very nice :bow: :bow: :bow: That makes lovely noise just like a jet winding up :D :D :D :D It reminds me of the bollokings i gat as an apprentice blowing bearings dry after washing them off :) :) :) :) |
| Bogstandard:
Very good result indeed Arnold. I have built a couple of turbines now, and both run very well. One of the easiest engine you can make, if you can work to tight tolerances. Ball racing does make them go a lot better, but the ones I used were limited to 45K RPM, and that figure can easily be exceeded, so really, if you wanted to attempt to take one to it's limits, then very expensive ceramic bearings would be required. They can be made to work a lot more efficiently, especially by speeding up the input air velocity by using a simple converging nozzle at the correct angle to the 'blades'. John |
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