We have horizontal bracing as well.
Use either multiple horizontal braces or use cross braces. Cross bracing is better and you generally use less material, standoffs rather than c-channel, so I would recommend trying that. Remember to brace both “halves” of the dr4b as well.
It is very difficult to make a blanket reason for what is going on, but I would recommend being aware of the following:
- The V5 Custom-Length cables are prone to failing
- Over time, cables used over a long period of time of plugging and unplugging get loose and may cause disconnects
- If there are two motors having the same problem, then likely the motors are working too hard to lift the DR4B. Build quality and rubber banding can have an affect on how the lift operates very very drastically.
- The V5 Brain can break ports very easily, try switching ports and see if it’s a port problem
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We have 3 horizontal braces across the bottom half. There are only vertical braces on the top half since the top half is 1 piece.
We are using standard size cables (1200 mm to be exact). The cables are new, and so is the brain.
It could still be the load, but I don’t really see how. Due to rubber bands, the lift stays up without the motors even on the robot, and there were no cubes being lifted when the lift motors stopped functioning properly.
Cross-bracing is connecting the lift across the 2 sides of the lift. A diagonal member if that’s not clear.
Sorry for the bad writing, I can’t use ms paint for the life of me lol.
I am aware of what cross-bracing is. We are not having any stability issues with the lift, so we didn’t feel the need of switching to it.
Yes but you have much unnecessary weight as a result of excessive bracing. Since your motors are dying, from looking at your lift, the most likely problem is they are malfunctioning due to the sheer amount of weight they are attempting to lift. By removing the vertical bracing on the sides of your lift and using just some cross-bracing, not only will you decrease weight, but it will allow you to increase the tension in the bands as they currently have little impact as they are not really stretched out to their full capacities.
The lift really doesn’t weight that much, especially since the tension of the rubber bands holds it completely. Two 100 RPM motors geared 7:1 should not struggle to lift it, especially when there are no cubes. It also did not struggle to lift our past 2 competitions. This is a very recent issue.
There are also far heavier lifts having no problem, such as 97936A’s.
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