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Type: Posts; User: brian Rupnow

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    Not the worlds greatest picture, but you can see...

    Not the worlds greatest picture, but you can see the spring steel arm with a "wheel" on the end of it. That wheel bears against a ramp that has it's high spot in the center. This gives a very...
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    This "add on" will be my version of a "detent"...

    This "add on" will be my version of a "detent" system" for the mechanism. The purple rod is spring steel.
    https://imagizer.imageshack.com/img922/7770/4KcCwT.jpg
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    Dan--I build enough strange "contraptions" to be...

    Dan--I build enough strange "contraptions" to be ran by my various engines, that it is sometimes nice to have an alternate power source. The drill mount was easy enough. Then after it was built I...
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    This morning was the first "trial run" of the...

    This morning was the first "trial run" of the system, and I am quite happy with the results at this time. The winch drum does reverse as I had hoped, and does so quite smoothly. I am going to add...
  5. I don't shop much. Good wife handles that, and...

    I don't shop much. Good wife handles that, and I'm very thankful for it. But--Occasionally I pick up something at a convenience store or at my drug store. And what happens when I get in the line...
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    I think I am going to have to add a counterweight...

    I think I am going to have to add a counterweight to the other side of the gear segment axis. I have tried to make everything very "free" so that nothing will bind. I've succeeded so well that the...
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    The reversing winch mechanism is finished. It...

    The reversing winch mechanism is finished. It operates very smoothly on the test bench. The pivot for the gear segment got changed from a shoulder bolt to a 3/8" shaft with ball bearings, to prevent...
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    Ian--I just watched the entire video. It is well...

    Ian--I just watched the entire video. It is well done, and explains a lot that I didn't know about 3D metal printing.---Brian
  9. I've designed a number of marine railways for a...

    I've designed a number of marine railways for a customer. Marine railways are generally not very steep. They are fairly short, used to pull your boat up out of the water for winter. One of the things...
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    I can see that you will soon move into a knew...

    I can see that you will soon move into a knew hobby called "neck breaking".
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    Today I made the winch drum and put the groove in...

    Today I made the winch drum and put the groove in each side that gives me the "dog clutch". The knurled round part setting beside the new winch drum is one of the original parts that has been drilled...
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    The one on the right is 1144 stress proof.

    The one on the right is 1144 stress proof.
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    Paul--the endgame is to have a hoist which is...

    Paul--the endgame is to have a hoist which is driven by my most recent hit and miss engine, to show it hitting and missing under no load conditions, and only hitting with no misses when lifting a...
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    I've never seen a Variator. I have shortened up...

    I've never seen a Variator. I have shortened up the offset arms as much as I could without blocking the space directly above the winch drum. The "bobs" on the string will have adequate power to shift...
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    I've been rethinking this mechanism. This picture...

    I've been rethinking this mechanism. This picture shows the current state of what I am starting with. I have spent a few hours this morning rethinking the design to let me use more of the parts that...
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    For those of you who are building this...

    For those of you who are building this engine-----The crankshaft endplay ends up being controlled externally by the ignition cam on one side and by the small bevel gear on the other side. My original...
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    One of the people building the engine from my...

    One of the people building the engine from my plans has discovered an error in the con rod drawings. I will be sending new corrected drawings of the con rod and cap out to all who purchased the plans...
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    I have worked out all the design of the self...

    I have worked out all the design of the self reversing winch. When the "bobs" on the string hit the arm which is attached to the bevel gear, the bevel gear rotates (only a little bit) and causes the...
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    Model Auto-Reversing Winch

    I'm a bit early into the game here, but far enough to share a concept. Last year I designed and built a mechanism that would reverse a flat belt drive, in order to mimic the reversing of a belt drive...
  20. Too late---Too Late---I am deep into the design...

    Too late---Too Late---I am deep into the design of a auto reversing winch. This is far more difficult than you would think. I have such a great video of the vertical hit and miss engine operating...
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    Yow!!! Nasty stuff. Looks like you could lose the...

    Yow!!! Nasty stuff. Looks like you could lose the whole tractor.
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    Artful Bodger--It's okay. We're still friends....

    Artful Bodger--It's okay. We're still friends. Sometimes I do it too---rush in and offer advice without reading the whole post first. ---Brian
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    That fixed it!! You can see it setting directly...

    That fixed it!! You can see it setting directly below the carburetor fuel inlet. (there really isn't much to see, because the gas-line pushes on from both ends of it). Now when the engine is on...
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    After much playing about with this engine, under...

    After much playing about with this engine, under both load and no load conditions, I have come to notice this phenomenon that I have seen before on other hit and miss engines. When the engine is...
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    Artful Bodger--I have already stated this very...

    Artful Bodger--I have already stated this very plainly two times, but just for you I will say it one more time. I want the load variation to occur with no input from me at all. I want it to be...
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