3 or 4 cranks is fine- 2 on side A and 2 on side C, none on sides B and D. This keeps all your shafts parallel. As for the sprocket, look closely...
I other words, drive the blue wheel directly, and keep the big sprocket locked (not rotating). Then the farthest point stays in a straight line...
All agreed. I thought your initial chained/tooth belted discovery was the right solution. But, when you said you wanted to eliminate gears I took...
Thorq, I have been racking my brain for different applications that would make my linear linkage an exclusive best mechanism, but alas I am not so...
If the blue wheels are too big to orbit, gear down first, which is likely a better option anyway. Gear down from motor to primary drive pulley,...
If the blue wheels are the gear down, you are going to have to make sure the belt cannot slip from one link to the next. If you want 1 motor total...
What I mean by side to side constraints is just if you don't want to put the side linkages on right away and want to experiment. Once you have...
I realize it is a bit difficult to see, but the fact that the platform is constrained side to side, as the front and/or back motors turn at the...
Actually, looking at the way you have your linkages set up, you are already constrained to linear motion. All you have to do is keep everything as...
Firstly, I am assuming you see the need to keep both the blue radius equal to the orange radius if you want to pass across the input axis....
Thorq, I have decided on a compromise: I will provide you the slider solution (and leave out the linear linkage without sliders mechanism we...
I sent you an email, so check your inbox. Basically, I could fix your "dead spot" problem without gears, chains, springs, etc.; but I would need...
Planetary Gearing Larson, if I am interpreting your drawing right, with the BC shaft just rotating and not orbiting and D just showing a cross...
The problem is that most SST is non-magnetic. The simple solution is to use 17-4 stainless steel, which is magnetic.
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