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« Last post by webby2 on June 21, 2026, 08:13:11 am »
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« Last post by webby2 on June 20, 2026, 10:27:43 pm »
the green is the input.
The gear-set is a 6/5 step down from input to output so the output arm should be 60mm for the input arm of 50mm for the system to balance in force.
The pic I have posted has the output rubber band at 70mm to have the same amount of stretch, between 40 and 42mm as the input,, resetting and retesting many times has given me the little window on the measurements but they are almost always within about 0.1mm of each other.
This then is a picture of a device in a static test state that is showing a mechanical gain for the operator.
I forgot to mention that that little gain is after all of the input costs have been paid for by the input,, so it cold be more,, it is a little sad that it is not yet at the 10:1 that the model predicts.
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« Last post by webby2 on June 19, 2026, 11:38:36 pm »
first pull is very interesting,, a rubber band force evaluation  The first pull was with the input rubber band at 60mm and the output was at 80mm, the system has a natural 5/6 step down to the output,, but both moved about the same 25mm from the spacer/preload stop.
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« Last post by webby2 on June 13, 2026, 09:30:44 pm »
One point that I will make is that the force is BETWEEN the RING gear and the PIN,, this is kind of very important to understand, that point stays within the closed system and becomes an integral part of the function of the system.
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« Last post by webby2 on June 13, 2026, 08:45:32 pm »
here is the system opened up to make it easy to see how simple this device is.
The silver cap in the center is the "pin" that the ring gear rotates around.
So simply put any sun to ring offset distance that is greater than 20mm will cause this to lock into mesh, there is a side effect of the tensile force between the sun to ring and then the ring to pivot via the arm that creates a very high force, this force is what forces the arm to rotate in sync with the sun gear, with no load or resistance on the pivot then the only force that is made with that is the force to make the arm follow the mesh.
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« Last post by webby2 on June 12, 2026, 07:08:58 pm »
this is my mechanical build as it is evolving.
I needed to find out what I needed to do to get it to lock every time without any other parts, and well this version does just that.
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« Last post by webby2 on June 05, 2026, 08:45:42 pm »
I think that it is not the rate of the applied force but the amount of applied force.
I was running with 3 TT's in series with the geared up output and had 2.47V to 2.55V out with 1.29A to 1.37A
A single TT motor was 7.5V 1.08A to 1.2A for 2.45V to 2.75V
I had other values show simular things, so to me that speaks to the force transfer and not the rate,, I know it sounds strange but it makes sense if the output velocity is not really a factor, but the force value is.
A normal usage would not provide these kinds of changes, I can not take a lower voltage at the same current and produce more out,, ti usually goes the more out means the more in, not less.
Just an observation from my notes
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« Last post by webby2 on June 03, 2026, 08:35:33 pm »
these are test runs to see if the system just works,, this was to try and answer where and why the apparent gain is and why it was only about a 2.5:1
clamp is a second clamp on current meter I used to watch a line trace of the current draw to try and see past the highs and lows of the meter on the power supply,, tt is 3 TT motors and those are on 52 tooth gears and the pin is a 36 tooth gear. waiving is with nothing on the motors but the arms, holding is with the sun gear attached, comp is with the compensator installed within the sun gear,
power power
6 0.82 1.04 loaded
0.52 0.63
waving 0.51 0.54
holding 0.59 0.63
comp 0.71 0.8
ring/gears 0.68 0.84
tt 0.78 0.9
7.5 0.98 1.08 loaded
0.83 0.98
waving 0.62 0.66
holding 0.76 0.81
comp 0.88 1.04
ring/gears 0.87 0.99
tt 0.9 1.08
6 clamp clamp
6 0.9 0.92 loaded
waving 0.56 0.59
holding 0.53 0.54
comp 0.59 0.6
ring/gears 0.73 0.75
tt 0.74 0.77
0.85 0.87
7.5
7.5 1.02 1.03 loaded
waving 0.87 0.88
holding 0.64 0.65
comp 0.76 0.77
ring/gears 0.92 0.94
tt 0.9 0.92
0.99 1
Out 50 ohms
6 0.44 0.75 V
7.5 0.94 1.2 V
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« Last post by webby2 on June 03, 2026, 08:25:52 pm »
The newer test bed.
comp,,, well if the test bed I only used 2 gears and 4 bearings, the bearings sit under the gear locations and run on a shoulder within the sun gear, this allows me to control the position of the arm, if the arm turns from a 180 degree orientation that turn moves the gears and bearings and the bearings then push on the shoulder pushing the sun gear away from the shaft and can assist the sun motion or resist the sun motion all depending on which way the arm is trying to move.
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« Last post by webby2 on June 01, 2026, 08:17:06 pm »
At least one thing that I have overlooked is that in force flow direction matters,, silly mistake on my part.
Also it is a good idea to check fit and mesh on a multiple gear part interface, 8 gears all meshing together seems straight forward until the gear ratios are not the same and even tho it looks like it should be a 45 degree offset it just might be 44.2 degrees to get a clean mesh,,, check before you print.
Printing off some more parts to try and use what I think I now understand somewhat better.
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