- Joined
- Aug 25, 2007
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I've decided that I'm spending too much time on the computer designing engines and not enough time in the shop building stuff. Incidently, I've discovered that my wife considers computer time as idle time, better spent working on honey-do-list projects. She seems less inclined to interrupt me if I'm in the shop doing something. :-X
So, I've decided to build Phil Duclose's Lil Blazer. This is the first time I've built an engine pretty much completely from someone else's plans. I will, however, be making a couple of small changes (can't help myself). First, I'm making a mirror image of the engine. This will probably increase the risk of making a mistake somewhere along the build, so I'll just have to take more time to think things through. Second, I'm going to use ball bearings for the crankshaft instead of just using drilled holes.
I've seen videos of this engine running at a lively pace on youtube, and I'm hopeful that my engine will perform equally as well.
[ame=http://www.youtube.com/watch?v=W_t2BhdYX80]http://www.youtube.com/watch?v=W_t2BhdYX80[/ame]
The face of the engine frame which holds the cylinder is milled at 20 degrees. Not having a sine bar or a 20 degree fixed angle, I made one out of wood using my power miter saw. I figured an error of 1/2 degree either way wouldn't make much difference.
Here I'm starting to mill the 20 degree cylinder face of the engine frame. This operation could have been done with a fly cutter, but I figured it was a good opportunity to use my 2" indexable face mill.
I've finished milling the 20 degree face and am center drilling the hole that holds the back of the cylinder.
Here I'm enlarging the hole with a 1/2" end mill.
Finally, boring the hole to 11/16" using my home made boring head.
Here I've finished boring the hole to size, moved the work over .410" and drilled the hole that the valve rod will pass through.
Next, I have to hog out a bunch of metal, so that will be the next series of pictures.
Chuck
So, I've decided to build Phil Duclose's Lil Blazer. This is the first time I've built an engine pretty much completely from someone else's plans. I will, however, be making a couple of small changes (can't help myself). First, I'm making a mirror image of the engine. This will probably increase the risk of making a mistake somewhere along the build, so I'll just have to take more time to think things through. Second, I'm going to use ball bearings for the crankshaft instead of just using drilled holes.
I've seen videos of this engine running at a lively pace on youtube, and I'm hopeful that my engine will perform equally as well.
[ame=http://www.youtube.com/watch?v=W_t2BhdYX80]http://www.youtube.com/watch?v=W_t2BhdYX80[/ame]
The face of the engine frame which holds the cylinder is milled at 20 degrees. Not having a sine bar or a 20 degree fixed angle, I made one out of wood using my power miter saw. I figured an error of 1/2 degree either way wouldn't make much difference.
Here I'm starting to mill the 20 degree cylinder face of the engine frame. This operation could have been done with a fly cutter, but I figured it was a good opportunity to use my 2" indexable face mill.
I've finished milling the 20 degree face and am center drilling the hole that holds the back of the cylinder.
Here I'm enlarging the hole with a 1/2" end mill.
Finally, boring the hole to 11/16" using my home made boring head.
Here I've finished boring the hole to size, moved the work over .410" and drilled the hole that the valve rod will pass through.
Next, I have to hog out a bunch of metal, so that will be the next series of pictures.
Chuck