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Rocking Engines
sbwhart:
--- Quote from: rleete on July 15, 2009, 04:19:52 PM ---
--- Quote from: sbwhart on July 15, 2009, 02:11:03 PM ---also the contact area on the bearing is only small so I'm thinking I may change the design to increase the contact area so you get a better fit without slop.
--- End quote ---
Did you press fit the sleeve (the .188 diameter tube) into the cylinder/frame part? I think that's how it's supposed to work (and how I am making mine) so that you get the full length of that sleeve as a bearing surface. No instructions along with the plans, and not even any tolerances specified, so it's not completely clear how it is supposed to go together. I'll have to have another look at the plans.
--- End quote ---
No I didn't press fit the sleeve in, but thats how I was going to change the design I'm planning to sweat the sleeve in with soft solder.
I think we have a case of great minds thinking alike here :thumbup:.
Thanks for your input and suggestion, its a real nice sweat running engine even though its upside down because of the low air pressure it ticks over lovely with puff puff puff and you can see the action, really worth the effort of making one.
Thanks again
Stew
NickG:
Well done Stew! :ddb: :headbang: :clap: :beer:
The only thing is, you do these little fill in projects too quickly!!! You can't put off the frame assembly any more now ahaha!
rleete:
Stew, may I ask how long it took you to make the parts? The reason I ask, is because I'm making the same engine - with a few of my own touches.
I'd like to know just how fast some of you guys can whip out parts.
sbwhart:
--- Quote from: rleete on July 18, 2009, 12:39:25 AM ---Stew, may I ask how long it took you to make the parts? The reason I ask, is because I'm making the same engine - with a few of my own touches.
I'd like to know just how fast some of you guys can whip out parts.
--- End quote ---
To make all the bits for two engines it took me about 6 hours, I've been playing around trying to get them to run and to remake bits about the same length of time I've still got a couple of hours more work to do over this week end to get them running the right way up.
Hope this helps
Stew
foozer:
--- Quote from: sbwhart on July 18, 2009, 01:39:15 AM ---
--- Quote from: rleete on July 18, 2009, 12:39:25 AM ---Stew, may I ask how long it took you to make the parts? The reason I ask, is because I'm making the same engine - with a few of my own touches.
I'd like to know just how fast some of you guys can whip out parts.
--- End quote ---
To make all the bits for two engines it took me about 6 hours, I've been playing around trying to get them to run and to remake bits about the same length of time I've still got a couple of hours more work to do over this week end to get them running the right way up.
Hope this helps
Stew
--- End quote ---
Made two pieces so far for a rocker, machine time about 22 minutes (timer left over from the treadmill motor mod) Time spent in barn? good thing I'm retired and dont watch the clock :)
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