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Nerd1000
Well-Known Member 27 From Australia
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- Viewing thread Diesel engine : Kromhout Gardner 4LW 1940
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Nerd1000 replied to the thread Question about lost PLA casting.I've got a fairly spectacular case in an ingot I could show (just need to go the the shop and take a photo, but that will have to wait...
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Nerd1000 replied to the thread Question about lost PLA casting.Pretty much any metal can soak up some hydrogen from the furnace environment, copper alloys will also pick up oxygen (adding phosphorus...
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Nerd1000 replied to the thread Needle bearings in a model diesel ?.Don't forget that you'll need to oil the piston and rings! Two ways I can think of for doing this would be to introduce some 2 stroke...
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Nerd1000 replied to the thread Needle bearings in a model diesel ?.I'm using fully floating wrist pins that are free to rotate in both the piston and the rod. As you say, a button on each end stops them...
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Nerd1000 replied to the thread Needle bearings in a model diesel ?.The other thing you might try is to call someone at (for example) your local SKF office. Their engineers collect a lot of data from...
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Nerd1000 replied to the thread Needle bearings in a model diesel ?.Usually oscillating motion is considered harsher than continuous rotation, as it stops an oil wedge forming. In a 4 stroke that might...
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Nerd1000 replied to the thread 18 Cylinders Isotta Fraschini (straight six-cylinder x3 ).I recommend a Napier Sabre. With functioning sleeve valves of course, no cheating to hide sneaky poppets somewhere.
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Nerd1000 replied to the thread Needle bearings in a model diesel ?.It does have the ability to model a diesel cycle. This is why the peak pressure only goes from 9.5 MPa to 10.2 MPa when I increase the...
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Nerd1000 replied to the thread Needle bearings in a model diesel ?.I should preface this by saying that the model I'm using has a lot of assumptions that may or may not be correct, mostly because it has...
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Nerd1000 replied to the thread Needle bearings in a model diesel ?.The small end is subject to some brutal forces, especially in a diesel. I calculated that the peak pressure on my diesel's small end...
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Nerd1000 replied to the thread Injected Diesel 56cc 2 Stroke, Will it ever work?".For my diesel I put together a large and incredibly convoluted spreadsheet that estimates a lot of the critical values e.g. bearing...
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Nerd1000 replied to the thread My Flat Head Hit Miss Engine.It's a brand of heat resistant epoxy with various fillers added. Pretty good stuff when used appropriately. Being comparatively heat...
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Nerd1000 replied to the thread Question about lost PLA casting.You need fairly high temperatures to burn out successfully, more than 400 degrees C I think. I've done it by putting the moulds in the...
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Nerd1000 replied to the thread Needle bearings in a model diesel ?.For knocking to happen the fuel and air must be premixed. Diesels in theory don't do this, the fuel and air mix only as combustion...
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Nerd1000 replied to the thread Choice of metals to use in building a model IC engine.It's increasingly common for larger industrial diesels to use steel pistons. This is done mostly because these engines tend to go all-in...
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