Dynamo/Gen Set
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DetroiTug
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Re: Dynamo/Gen Set
Fred, this is the muffler/feedwater heater I built for an early steam carriage I'm restoring.
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fredrosse
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Re: Dynamo/Gen Set
BEAUTIFUL WORK YOU DO, AS WE HAVE ALL SEEN FOR YEARS ON THIS FORUM.
Re: Dynamo/Gen Set
This is my set up:
https://youtu.be/OC5pHkGR63E
Good for 15 amps in theory, and so far has had more than enough power for anything I have needed!
It directly drives an unmodified 24VDC permanent magnet motor, so I don't have to spin it too fast to get 12V.
Of course it helps that the rated power/speed of the engine is 1/3 bhp @ 2,800rpm on 80psi
https://youtu.be/OC5pHkGR63E
Good for 15 amps in theory, and so far has had more than enough power for anything I have needed!
It directly drives an unmodified 24VDC permanent magnet motor, so I don't have to spin it too fast to get 12V.
Of course it helps that the rated power/speed of the engine is 1/3 bhp @ 2,800rpm on 80psi
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cyberbadger
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Re: Dynamo/Gen Set
Nice Sirius.
I always wondered how close a Stuart Sirius is to the gensets Stuart made for WW2.
I used a Stuart 4a and could get 100Watts out without much trouble with a WindBlue permanent magnet alternator. Load: 12V 100Watt incandescent light bulb.
https://www.youtube.com/watch?v=9AbbH1R48X0
-CB
I always wondered how close a Stuart Sirius is to the gensets Stuart made for WW2.
I used a Stuart 4a and could get 100Watts out without much trouble with a WindBlue permanent magnet alternator. Load: 12V 100Watt incandescent light bulb.
https://www.youtube.com/watch?v=9AbbH1R48X0
-CB
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TriangleTom
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Re: Dynamo/Gen Set
Love that Sirius. It's always satisfying to see them used in a way that both takes advanage of their quirks and is useful.
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Lopez Mike
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Re: Dynamo/Gen Set
I have the drawings for the Firefly gen set and it is the Sirius. No differences that I can see. It supplied 6V at around 4A to charge a small lead acid battery that powered a small morse code radio set for clandestine service. The boiler was an ordinary pressure cooker doubled in height. No condensing or feed water pump. Just batch operation fired with wood. The boxed gen set was shipped inside the boiler for air dropping.
I'm a ham operator with a special interest in WW2 clandestine and tactical radios. Now the radios are so efficient that we just carry batteries with us. Very much the same as back then though. Perhaps up to a five watt radio using a wire thrown over a bush.
The Sirius seems to run quite reliably though a close look at the bevel gears supplied to drive the valve gear would indicate that the loads are modest.
I saw one driving a model Merry Go Round (Carousel, Hurdy Gurdy) in pretty much continuous duty. Hours a day. The maintenance guy said that all he did was drain and refill the crank case once a day to flush out condensate that got past the rings.
The model was said to be of a English or European on as it turned clockwise. Stateside ones being asserted to go the other way. I’ve seen full sized ones go both ways.
I was 13 and didn’t know enough to ask much more. 78 now. Groan!
Mike
I'm a ham operator with a special interest in WW2 clandestine and tactical radios. Now the radios are so efficient that we just carry batteries with us. Very much the same as back then though. Perhaps up to a five watt radio using a wire thrown over a bush.
The Sirius seems to run quite reliably though a close look at the bevel gears supplied to drive the valve gear would indicate that the loads are modest.
I saw one driving a model Merry Go Round (Carousel, Hurdy Gurdy) in pretty much continuous duty. Hours a day. The maintenance guy said that all he did was drain and refill the crank case once a day to flush out condensate that got past the rings.
The model was said to be of a English or European on as it turned clockwise. Stateside ones being asserted to go the other way. I’ve seen full sized ones go both ways.
I was 13 and didn’t know enough to ask much more. 78 now. Groan!
Mike
If you think you are too small to make a difference, try sleeping with a mosquito.
Dalai Lama
Dalai Lama
Re: Dynamo/Gen Set
cyberbadger wrote: ↑Fri Jan 08, 2021 2:27 am If that is just a typical automobile alternator you indeed will not get much power from that configuration, you need much a higher rpm to get into the range for automobile alternators to start producing current. I note the video showing the engine running on compressed air doesn't show the electricity generation..."
Actually it generates enough to drive Befur's Inverter (about 60amp at 12V), the trick is that it is geared up (about 12:1 from memory) from the crank,,, and with new Lithium Inverter battery and DC-DC charger is it proving really good!
https://sy-befur.co.uk/2024/10/11/a-com ... er-firing/
SORRY, for being so slow to reply....
Malcolm
Befur's Blog: https://sy-befur.co.uk/