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There seems to be some interest in LED lighting. I love LED lighting everywhere, and here is why. 10 years ago we did a major remodel on a house just before we moved in. All new electrical, plumbing, HVAC, etc, etc. One thing we were after was energy efficiency and LED lighting had the...

Not really on the topic, but I happened to notice an optical illusion in post #22, above. If I scrolled the frame showing the tire in post #22, up and down, the tire appears to rotate. o_O

Lohring, Thank you, I appreciate the discussion. My dyno set up is more of a curiosity and might only be used a few times just for fun. The prony brake version works well within my expectations of its performance. The wooden brake and the v-pulley that it rides in get too hot to touch very...

The level of detail is over the top! So? No wife. No job. No kids. Snowed in every Winter. Lol? :D Sorry. None of my business. Just joking. Ha ha.

I have a really hard time with keeping the shop organized. The things that have a "place" are no trouble. The unclassified and half finish projects clutter up everything. I keep raw material organized 3 ways, but first I Always mark everything with a Sharpie with the alloy number. 1.A milk crate...

Very nice work. I was not at all familiar with that "cooling tower" type of design for engines. I know this is too late, but yours immediately reminded me of our stainless steel coffee drip cone. Extremely fine perforations.

I normally do design-build and always try to design for simplicity of build. I make drawings ahead of time because it saves so much machine time. The drawings are constantly updated to "as-builts". I also keep a composition book/notebook for each project.

Being able to elegantly adapt the project to work well with the mistakes, separates the real machinists from the machine operators. Have you named your engine yet? "Brutus" might be a candidate.?!

This software, with only the Hall sensors can be used as an inertial dyno, too. A suitable inertial mass can be quite heavy and requires decent bearings and rigidity. I am setting up an experimental one using using the headstock of my lathe with a wheel and tire mounted on the outboard end of...

Hall Sensor and Load Cell Upgrades Video with full details This pretty much covers the hardware, software, programming, and shows a couple of dyno runs. And all for under $40. (BTW, the Airgun Lab is me, too.)

A countersink should work fine. You might finish off with the top and bottom relief angles cut with drills re-sharpened to the correct angles to achieve the seat margin you are looking for. If needed, you could probably make a piloted lap that incorporates all 3 angles to improve the...

Researching some proper, but inexpensive Hall sensors, load cell elements, instrument amps, disc brake and caliper assemblies, for the first upgrade. The money spent will still be less than $100 USD. Also considering trying an inertial version. Anyone know the moment of inertial of one of those...

Nerd, I have been away for a while, but see that you have not. As always, nice, steady, progress. What you are doing (and many others, too) is inspiring. Thank you, Lloyd

Good luck on the diesel project! Maybe try and get the injector working to your satisfaction first. Although, my obsession with a unit injector (the high pressure pump, metering, and timing all incorporated into the injector unit) led to the temporary shut-down of the project. The...

Ya know, there is some truth in what you said, LOL. Yes,I am chuckling too. I Have always been interested in this dyno type of stuff with the data collection and analysis of the data, and lots of spreadsheets. Gotta have the spreadsheets! But when I was younger, I had no money to do this. Now...

VIDEO OF A QUICK DYNO PULL OF THE ELECTRIC MOTOR The motor is of an electric stepper motor for an industrial sewing machine, checking the torque and HP from zero to 3500 rpm. This run was made with a moderate load on the motor (the load is adjustable), running at about maximum torque for a...

Thanks Scotty! It was (is) a lot of fun and easier than one might think.

Thank you for that kind offer Minh-Thanh. But I think I will be ok. I think you once said to get the engine working and THEN go back and change what the engine tells you needs to be changed. Or something like that. Unfortunately, I did not follow your advise, and that led to frustration. I will...

I've been absent for several months for many reasons, but have been working in the background. I hit a frustration threshold on the diesel and shifted focus to other stuff, but came back around to this cheap diy dyno set up with data logging that really works. Here are a few pictures of the...

Thanks for that information. You seem to have a reasonable selection of materials to choose from, which is always nice, and of course we all have our favorites. I don't know if there is much advantage of ductile over gray iron for the liner, one way or the other. The high silicon alloy for the...