Here is a very nice and small original Brunner Air Compressor with a base and flywheel castings. Many people have used these little compressors to make model gas engines. I bought this setup at a swap meet last year. The compressor seems to be in good shape and has some compression or vacuum. It has a very small chip out of the base by one of the mounting holes. One of the flywheels appears to have a casting flaw that was ground on or filled in a bit. Check out the pictures and see if you need it. For questions 419 789 1159. The bore is about 1-7/8 in diameter but it is difficult to measure so that might not be perfectly accurate. The stroke is about 2. The crankshaft is about 15/16 in diameter. The base has a chip by one of the mounting holes. The compressor on the base is about 12-1/4 long in overall length. The flywheels are about 9-3/4″ and 10″ in diameter, one just appears to have some extra iron on the rim, the should machine to match. No plans, make it however you want! It’s all about 42-1/2 lbs before any box or packing material. Thanks for looking at this listing! If you want to check out my reputation and such please feel free to google search my name. My name and address is. 14316 State Route 281. If you can find a way to talk to me with your voice you will almost always get a quick response. If you message me please try not to sound like a caveman. I have terrible grammar myself so I understand but sometimes it is very difficult to comprehend what some people write. If I make a mistake on my measurements or you feel something is not as described please let me know and I will try to make it right. I think most all of my customers with a normal level of sanity are happy. I think most people would agree that I do an extremely good job of packing items so I guess it’s worth the wait. Check out my other items. Be sure to add me to your favorites list.