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Don't know much but if u only have the exhaust valve operating on the cam can't u gear the cam at 8/1 so that it only fires every 8 strokes

I don't have the equipment or the ability to build the engines that are mostly built here,I have a lathe angle grinder welder oxy kit so I am limited. The engine is simple and I know my outlet timing and opening distance does need attention .tried it without a fly wheel and was getting 3/4 of a...

Is there a standard way of working out diameter and weight needed in a fly wheel.i have built a air motor that has standard valves for inlet and outlet and I know my outlet needs some modification to allow proper airflow but also thinking fly wheel may be to heavy or large or maybe not large...

Righto you got me interested with your twin turbo . I don't know but I always thought that most high performance engines still only ran 5 psi maybe 7 psi boost. Your heads will have to be good and tolerances very tight even at 2-3 psi boost good luck I will watch with interest and if I am...

Just because it ain't been done before dont mean it won't work,the first steam engine was probably doubted as well

Just another thought how about a glow plug hidden in the block exposed in the head to provide the extra heat required for ignition

I have thought about diesel injectors and how to make them.the only way I could come up with was to heat the tip to red hot and poke a pin through to create the injectors holes.whether the atomisation is good enough is unknown and biodiesel is known to be coarser then petrodeisel so they may...

I have thought about electronically timing an engine and my thoughts would be to cannibalise Jacobs brake activation solenoids.if you don't know a Jacobs brake is found on most American truck engines and operates by opening a oil path which expands a piston arrangement to open the exhaust at...

Well entropy455 you certainly know your stuff,always reckoned there was a way to determine hp from torque that's why I suggested finding out the available torque and then gearing up to the generator. Does anyone have a way of measuring the hp put out by the models like a home made devise,I don't...

That's an awesome sounding engine well done .always gets me how they work but yours seems to react well to the different flame position and revs out easily

I think from memory 1 hp is required to produce 25 amps at 12 volts.my theory is you should check the available torque and then decide what gearing you can run to get your generator to the right speed. I failed physics so all my work is experimental but Ian never bored and learn more now then I...

Someone stated that they recently built an engine from plastic and just thought I would add that some Honda copies coming from china actually have a nylon crankshaft in them..never thought that nylon could handle that much pressure even on a 6 hp engine.

Why not a simple reed switch instead of a hall sensor

Does anyone know how to work out the volume of air at 100 psi that has been allowed to expand back to 1 atmosphere.this is for a air engine I am trying to build. I don't want the air to have any pressure at the bottom of the stroke but also don't want the valves to close to soon and create a...

Is it possible to braze brass to mild steel or is there a better way.any tricks would be helpful I haven't done any brazing for about 18 yrs and from memory I want that good at it

I would have thought that you steam engine running on air would have been running only by the shot of air at inlet only and continued to run by the force of the initial blast.no work expansion at all is required to run because you have already overcome friction .Seen a commercial air motor...

Sorry if I went a bit overboard not sure on what you actually required.a splash system would be easy to build but i am not sure if it is very good for overhead gear,you still need oil to the top of the head without flooding it.I would imagine that a piston pump arrangement would be sufficient...

All more serious engines have a pressurised oil system.Mainly a gear pump and the oil travels through the crank to the big end and mains and through the bearings on the big end to the conrod to the gudgeon pin and also sprays out onto the bottom of the pistons for cooling and the cylinder walls...

How would a simple wheel with a high spot work as a cam,even running a small bearing on the wheel so that the lifter will work smoothly and dependent on degrees of rotation covered by your raised spot you could time the length of time that the valve is open for.to obtain the right amount of...

Thanks for the video mine looks and sounds nothing like that.my tooling is 10 mm and my material has been sticking further out of the chuck so I will try things differently.my machining knowledge is limited so thanks for your responses,they are invaluable