Drew
Active Member
Hello
I started to get the itch build a small I.C. engine a while back. I have built two Stuart 10H steam mill engines and a free form steam mill type. They are limited due to a lack of boiler and somewhat boring.
I figured it's time to try my hand at an I.C. . After searching, I was 100 percent sure I should build a V8 or at least a V4 . Perhaps in the future. I chose to build a Hit and Miss Engine. A much more viable solution for my current level of involvement.
I began searching for casting kits and plans. After many hours and some limited success, I came across David Kerzel's free engine plans. Perfect! Problem solved. I figured its a little small, but looked like some thing I could just build and not have too much design effort.
While looking at the drawings for a few minutes, I realized there was at least one major thing that needed changing. This was the direction of the angle on his bearing blocks. They are tipped backward away from the cylinder. Putting the pressure of the engine directly on the screws holding the caps. On a model this size it probably doesn't matter except it is opposite of any pictures and encounters I've had of real engines. They are tipped toward the cylinder so that the base casting takes more of the force, not the cap.
Very shortly after, I had started designing an engine based heavily from David Kersel's engine in Fusion 360.
I am still not 100 percent done, but close enough to start making components.
Here are some pictures of what I have so far.
I started to get the itch build a small I.C. engine a while back. I have built two Stuart 10H steam mill engines and a free form steam mill type. They are limited due to a lack of boiler and somewhat boring.
I figured it's time to try my hand at an I.C. . After searching, I was 100 percent sure I should build a V8 or at least a V4 . Perhaps in the future. I chose to build a Hit and Miss Engine. A much more viable solution for my current level of involvement.
I began searching for casting kits and plans. After many hours and some limited success, I came across David Kerzel's free engine plans. Perfect! Problem solved. I figured its a little small, but looked like some thing I could just build and not have too much design effort.
While looking at the drawings for a few minutes, I realized there was at least one major thing that needed changing. This was the direction of the angle on his bearing blocks. They are tipped backward away from the cylinder. Putting the pressure of the engine directly on the screws holding the caps. On a model this size it probably doesn't matter except it is opposite of any pictures and encounters I've had of real engines. They are tipped toward the cylinder so that the base casting takes more of the force, not the cap.
Very shortly after, I had started designing an engine based heavily from David Kersel's engine in Fusion 360.
I am still not 100 percent done, but close enough to start making components.
Here are some pictures of what I have so far.
