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Piston spark ignition points?

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Niels Abildgaard:
Those mowing-piston sparkplugs I have drawn up til now are not worth publishing.
The  drawing of a micro CHP plant( at start this topic) has two stationary conventional spark plug holes.
 I stick to that for the time being.

Niels Abildgaard:
The obvious place to have the ignition system is  in the crosshead rod getting energy from a stationary coil integrated with the gland around the piston rod.
Modern 37mm AA shells have systems that measure nozzle velocity very accurately and set the time fuse.
An ignition system within a crossheadrod of say 12mm dia and mowing 34mm ,must be order of magnitudes easier to make.
I seem to remember a couple of days ago that british electricity system price was 0.7£ per kWh for hours on end.
I gues your system gas price is 0.05£
A combination of baseload(66% of max?) made by nuclear,rest by wind or waves or such a Junkers CHP I propose will be economic optimum.
The numbers needed are staggering.
Old crows that feed here can do worse than discussing future electricity strategy.
Interested?

gipetto:
That's a good point about a crosshead being suitable for an electricity conduit. i wasn't sure that you were going to use crossheads, considering they add a lot of complexity and unreliability to a gasoline engine.
My father has a share in a windfarm. the turbines are in the megawatt range. I am irish and in the eu so our economic situation is not as bad as the uk. the country does buy a lot of nuclear power from the uk through an interconnector.
I've often thought of building a battery bank from electric car cells and using it to power the farm from 5pm to 7pm when energy is most expensive. My health doesn't allow big projects currently, i lack energy.
I worked on a dairy farm once where they had constructed a generator from a car engine. they had fitted a belt pulley inside the gearbox and used it to drive an over the counter generator. I think if i wanted inexpensive power used auto parts would be the way to go, as they are almost free when they age out of service.
I think it's important to be realistic and realise that hobby engines will never give good service in industrial use.
My neighbour is a carpenter and may have built a wind turbine based on the otherpower.com plan. Lately i've been wondering if it were possible to build such an epoxy type axial generator without expensive magnets by emulating the brushless alternator design. that is to say, use two rings of enamelled wire on the stator instead of the current one. pass a field current into one ring, and draw the output power from another ring. the rotor would have two rings also, but with diodes.

gipetto:
I came across this video a few minutes ago. it mentions that by rotating the valves like a sleeve valve engine does it is possible to get an increase in efficiency by avoiding ring stiction. I thought of your engine because i reasoned the cylinder could be spun since it lacked a cylinder head.
http://www.youtube.com/watch?v=yomaQvs0esA

Niels Abildgaard:
Thank you for video.
For my paramotor concept and lubricated with bio-de-gradeable oil in raw amounts it is worth a thougth.
For my crosshead  one -family house altar,life saver  much less so.
(The Bristol sleeve valves with lots of ports were not known for  lubrication oil frugality.)
The game here is to make the say 35mm times 2 times 40mm cylinder,piston-rings and crosshead of diamond and  gland
.
Lowest known dry friction  and quite some wear resistance

For better picture and further procedings see link

https://www.homemodelenginemachinist.com/threads/piston-ignition-points.36761/



Donor parts for concept proof engine from cheap Chineese gensets

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