Here's the Elmer's Tiny # 23 I built. This is my first engine, and also my first topic post.
Since this was my first attempt at any engine, I didn't produce any build pics or text - building it was more than enough for me most nights.
I chose Tiny thinking that the few parts involved would be an easier build. In the end I built many of the parts more than once.
I bought a mill in March 10, and got my lathe in September. I haven't built anything much, other than some odd and end type parts for my lawn mower. I spent most of my chips trying to learn. Building Tiny was probably the best thing I did, as it forced me to solve some issues that I was having. So don't look too close, it has a lot of so called warts and machine marks.
(Believe it or not, I am way better at grinding bits than I was a month ago, but have yet a long way to go.)
I couldn't get it to run at first. What I found was that I had my exhaust port hole too close to the intake. Rather than building another column, I drilled out the exhaust port, plugged it with some 1/8 inch brass rod, silver soldered it, filed it down, and then remarked the port with the template, and redrilled it. I was pretty happy when it finally started working.
The column was a rusty 7/8in rod from my Dad's farm. I was really surprised that it could shine up like it did. I bought the brass from a local scrap yard - $3 /lbs. I made the 1/16 in shafts from some old welding rods (7014?) that had long since lost there flux. Turning those small diameters is a story in it's self. If I was to do it again, I think I would just get some drill rod.
When I got it running, I thought I might have to rebuild it - It wouldn't start on less than 60 psi, and would quit between 20 and 30 psi. I want to thank Arnold for giving me some tips about getting it go easier. It will start on around 30psi now, and with some more tuning I might be able to get it running on less. I don't think it will ever run on my breath though.
It was a fun build, and for anyone who has not yet done this engine, all I can say is to get some magnifying glasses. I want to thank everyone who has posted a build, and taken the time to document it. Those posts have really benefitted my learning, and truly inspired me.
I haven't completed the running video yet. I shot it tonight, but have never put a youtube together, and need tomorrow to figure that out. I will try to get that posted soon.
Later,
Ronald
Since this was my first attempt at any engine, I didn't produce any build pics or text - building it was more than enough for me most nights.
I chose Tiny thinking that the few parts involved would be an easier build. In the end I built many of the parts more than once.
I bought a mill in March 10, and got my lathe in September. I haven't built anything much, other than some odd and end type parts for my lawn mower. I spent most of my chips trying to learn. Building Tiny was probably the best thing I did, as it forced me to solve some issues that I was having. So don't look too close, it has a lot of so called warts and machine marks.
(Believe it or not, I am way better at grinding bits than I was a month ago, but have yet a long way to go.)
I couldn't get it to run at first. What I found was that I had my exhaust port hole too close to the intake. Rather than building another column, I drilled out the exhaust port, plugged it with some 1/8 inch brass rod, silver soldered it, filed it down, and then remarked the port with the template, and redrilled it. I was pretty happy when it finally started working.
The column was a rusty 7/8in rod from my Dad's farm. I was really surprised that it could shine up like it did. I bought the brass from a local scrap yard - $3 /lbs. I made the 1/16 in shafts from some old welding rods (7014?) that had long since lost there flux. Turning those small diameters is a story in it's self. If I was to do it again, I think I would just get some drill rod.
When I got it running, I thought I might have to rebuild it - It wouldn't start on less than 60 psi, and would quit between 20 and 30 psi. I want to thank Arnold for giving me some tips about getting it go easier. It will start on around 30psi now, and with some more tuning I might be able to get it running on less. I don't think it will ever run on my breath though.
It was a fun build, and for anyone who has not yet done this engine, all I can say is to get some magnifying glasses. I want to thank everyone who has posted a build, and taken the time to document it. Those posts have really benefitted my learning, and truly inspired me.
I haven't completed the running video yet. I shot it tonight, but have never put a youtube together, and need tomorrow to figure that out. I will try to get that posted soon.
Later,
Ronald
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