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Yes, a flyback transformer would also work,...but I don't have one of those in my spare parts box either. So, I'ld need to order a flyback and incur the same week to 10 day shipping delay. Having a short inside the coil's insulation is pretty rare,...hopefully it's a one-time occurrence for me.

Just when I was ready to finally run more tests,...my High Voltage ignitor coil sprung a leak,....and I don't have a spare! I've ordered a replacement (and a spare) but this means another week to 10 days delay. The red arrow in the pic below points to the high voltage arcing inside the coil...

The small motors used on drones make excellent alternators without any modification. These motors are brushless outrunners and put out 3 phase AC when used as a generator. A few diodes, or an automotive alternator rectifier pack, will convert the 3 phase AC into DC.

More test parts arrived and I'm ready to connect them to the boiler,....now, if it would just stop raining :-( My boiler test stand,... under the very wet, black rain cover.

After weighing which loading method would be better, electrical generator or water pump, I decided to first try the electrical generator. Even though the load which the generator presents the Tesla Turbine will likely be way too small, the test stand arrangement allows me to read the RPMs...

Referring to my 9-Piston Axial Pump.dwg drawing: I use magenta color circles to represent end mill size, start-stop, and pathway points as an aid to myself as I write the G-code; the pic shows an example. The magenta circles in this drawing show start-stop points for two milled O-ring channels...

My web browser is Google Chrome which downloads the file as soon as I click on it. Check your downloads folder to see if it downloaded without telling you.

If you decide to build the pump version which uses valve plates, I would change one of the plates from brass to steel, as brass slides on steel with less friction than brass on brass.

Can you use a CAD file? The drawing I have I made for myself, it is not 3-D and not fully detailed, but between the CAD file and all the photos I've posted, you should be able to duplicate my pump.

Which motorcycles have oil pumps capable of developing 60 Barr (900 psi) ?

I recently made a pump that should meet your needs; The build thread is here: Axial Swash Plate Pump. I built two different valve designs,...the design using valve plates should work to pump diesel oil. The design using ball check valves will work with any liquid, but is harder to make all the...

So what you're saying is that the increased efficiency and power output seen by turbines using full admission as compared to those using partial admission will be offset by some amount due to boundary layer drag when blade height becomes sufficiently small. I agree,...but how short? And how...

The first diagram in post #8 shows an example of partial admission. Only a small part of the turbine wheel is being pushed by the steam from a nozzle.

I'll try to better explain my previous post using several pictures. The drawing below shows a typical De Laval turbine with 4 perfectly shaped CD (Convergent-Divergent) nozzles, which taken together, direct steam flow through only part of the turbine wheel. The below pic shows parts of a...

Agreed. In fact, most modern aviation turbines today are twin-spool designs, with a few 3-spool designs. The primary tasks of the core turbine, (often referred to as the gas generator) in a twin-spool engine, is to turn the compressor for the core section and supply enough exhaust gasses to...

Why must partial admission be used?? The tiny gas turbines made for model airplanes , the few that use axial flow blades in the hot section, use full admission. Why is steam flow different ?

You've clearly put in a great deal of work into your spreadsheet,...are you planning to build a 4 stage axial flow turbine ?

My boiler is an all copper monotube; for safety there is no superheat. steam temperatures will be limited to at or below 470 F (243 C). At 400 psi I expect to see steam temperature of 448 F (231 C). Will your spreadsheet work with no superheat? Did you ever post your spreadsheet? I'm still...

Looking at the boiler output side, and using Boiler Horse Power, which is defined as: One BHP is the amount of energy needed to evaporate 34.5 pounds of water into steam in one hour at a temperature of 212°F. Or: 1 BHP = 15.6 kg/hr. Since 1 liter of water weighs 1 kg, then 1 BHP = 15.6 L/hr...

I crunched a few more numbers for my Tesla turbine to get a better idea of how much power to expect from it. The turbine has 6 brass nozzle arrays, each with 24 individual 0.026" diameter nozzles with divergent openings as shown in the pic below; the top nozzle array shows the divergent...