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Nerd1000
Well-Known Member 27 From Australia
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Nerd1000 reacted to ddmckee54's post in the thread 18 Cylinders Isotta Fraschini (straight six-cylinder x3 ) with
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Most modern auto engines will easily run for 200,000 miles without major problems, I got 250,00 out of my KIA Sorento and the engine was... -
Nerd1000 replied to the thread 18 Cylinders Isotta Fraschini (straight six-cylinder x3 ).On my Webster engine I used a mild steel lobe and an aluminium (6061) follower. After an hour or so of running there is a noticeable...
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Nerd1000 replied to the thread 18 Cylinders Isotta Fraschini (straight six-cylinder x3 ).What actually wears out cams and followers in full sized engines is usually fatigue stress at the surface, leading to 'spalling' of...
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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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