Recent content by Kawka777

Thank you so much for the awesome description. “Aircraft Engine Design” is an awesome resource, and from the time period I am most interested in. SteveHucks’s iterative process on some things is a great idea that I didn’t really think about as a possibility. It all doesn’t have to be on...

Stevehucksss396, Awesome pics! Makes sense to keep the compression ratio low! If you redesign the carb for a simpler version, is there a rule of thumb for combined piston displacement vs carb size?

Green Twin, It sounds like the steams are a little simpler to convert, relatively speaking!! Any reason to upsize the crankshaft other than ease of machining?? At work, I get to help keep a 1916 William Todd 1000t Steam Slab Shear alive and reliable. I made a 1/22 scale non-functioning scale...

Hi All, There are a ton of you that build scale engines based on full size drawings of IC engine like the RR Merlin, Dusenberg Straight 8, Wasp Series Radials, etc. I am wondering how you handle scaling full size plans down to your desired scale? How on the world do you handle the...

Hi, Awesome hobby to get into that can turn into guiding the rest of your life if you enjoy it. I did the same thing as you; build a wobbler steam engine in high school shop class and that hooked me forever. Later, in college, I super got into jet engines and built one! Now I play with big...

I'm doing the built up NGV

Excellent... That's about what I have right now. Il go for the 5 blade compressor.

Is have been making the shaft tunnel for the Wren MW54... The plans call for a slide fit for the bearings, that is "not too tight but not too loose." I have the front bearing in a perfect slide fit with no play but the rear bearing is 10 hundredths of a millimeter over the OD of the bearing. I...

Thanks a lot Steve, I will do that! I'm going to go ahead and 3d print that part and start building the rest of the engine. Il post pictures as I go along.

How's this diffuser look? I designed it like you suggested and simply extended the wedges to the outer diameter and took out the stator vanes.

That's definitely going to be easier... Il design one on CAD and post a picture to see what you think.

These are the two different types I've seen besides one with stator veins.

So a dump diffuser is a diffuser that doesn't have stator veins? The wedges on the front of the diffuser that direct air extend to where the stator veins would end? I have seen three types of diffusers, the ones with stator veins, the one I described above, and ones that have holes where the...

Blightly, I am building this as a learning curve. I bought a 1930s atlas model d metal lathe in really great shape a few years ago and have been learning how to use it. Most parts for the wren turbine are pretty simple lathe work or sheet metal work except that dang diffuser. I'll take a...

Thanks Steve! Now that I look at the planes I can see where attaches. I could try to look for a milling attachment. I doing some drawing on CAD to figure out a way to make the diffuser in multiple parts and have it all screw together. Im thinking to make the stator veins out of sheet metal...