A couple months ago I saw a post in which the old linear slides were being discontinued, and the whole community was in somewhat of an uproar.
Recently, I’ve been able to get my hands on a set of both, and after some testing, I don’t really see the big deal. I think the new ones are better, because they don’t cause the inner sliders to stick out (for example while lifting a scissor lift).
Could someone please explain why the old linear slides are deemed “more superior”?
The old slides are generally considered more superior because they don’t have anywhere as much wiggle room in them (any movement other than the one direction they’re supposed to be going in). If there is slack, it’s easy enough to bend them back into shape. With the new slides, you can’t really fix all the wiggle, as it’s inherent to the truck system. You can get rid of some of it, but weren’t able to get nearly the same amount.
I do plan to use the new slides this year, but our bot’s lift last year could not have possibly used the new slides with the same performance.
Here is a picture of last years programming skills robot. A single linear slide, powered by two motors, raised the conveyer belt assembly from horizontal to the position shown. Sacks were then moved up and dropped of the end into the trough. Not sure we could have done that with the new linear slides.
Yessirrrrrr it is. Did it ever actually pass inspection and compete as a wallbot? Nope. But it sure did look cool, and it caused a ton of hype at the competition. If we had doubled the amount of linear slides on the robot it would have been working perfectly fine though.
I’m not from his team but I know the story. The insane amount of rubber bands on that robot pulled on the sliders with so much force that it could not compact completely into the 18" sizing cube. They got really close to fitting it in, but it never passed inspection.
Here is a video of that wallbot expanding, it was posted to the forum a while ago.
Along with it barely not fitting even after last minute dremeling, it could not expand as fast as we needed it to (1.4 seconds) without an unsafe number of rubber bands. This was why the project was abandoned.