- Joined
- Aug 25, 2007
- Messages
- 3,890
- Reaction score
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Figured it's about time for a radial engine. It'll be compressed air using my ball slave valve arrangement. Operation will be 4-stroke using a 2 lobe, coaxial cam turning at 1:4 ratio to the crankshaft. Here's the beginnings of a concept picture:
I started out rough cutting a hexagon out of 1.25" thick aluminum tool plate with my 4 x 6 band saw. Then used a 1" arbor to chuck it up in my 5C hexagonal block. I used a 2" indexable carbide mill to face off each of the 6 faces.
Wound up with what seems like a respectable hexagon 1.25" thick and minor diameter of 2.443" (Yeah, I over shot the target diameter of 2.500" :-[)
Chuck
![4b0af341.png](https://proxy.imagearchive.com/ea3/ea3f6a2e9155e7573771547874505cf3.png)
I started out rough cutting a hexagon out of 1.25" thick aluminum tool plate with my 4 x 6 band saw. Then used a 1" arbor to chuck it up in my 5C hexagonal block. I used a 2" indexable carbide mill to face off each of the 6 faces.
![ea52dcd1.jpg](https://proxy.imagearchive.com/955/955e0246d89cd9fcf7abb5634b562abe.jpg)
![53630d73.jpg](https://proxy.imagearchive.com/298/298b6e96697ca043132d2e1b423ed8a8.jpg)
![bfae8121.jpg](https://proxy.imagearchive.com/e75/e7523a620f6599a4e595cb4d7141f7df.jpg)
Wound up with what seems like a respectable hexagon 1.25" thick and minor diameter of 2.443" (Yeah, I over shot the target diameter of 2.500" :-[)
![674fc61b.jpg](https://proxy.imagearchive.com/cf2/cf212ab3fc6c14dacbab4efd9ea95793.jpg)
Chuck