you need to grind the outer wall of the shifting gears round so that they can shift any time without getting stuck. Also, use double action piston and high strength gears, they use save you from lots of trouble
We ended up sanding not to worry, but the other two were impossible due to form factor/air consumption. You can see how complex that robot was in the pikes peak semifinals video. (We have since redesigned)
@@EKentDenverRobotics Well, if you wish to have a 6motor drive with high speed gear ratio and can carry 3goal +pushing the forth goal on the platform, these are probably the only way. And by the way, lots of the robots are now using 8~10 pistons, if you feel the gas consumption is too high, you probably should consider regulators and rubber bands
my team is also making a transmission so I was wondering what you meant by grinding the outer wheels round. Does that just mean sanding down the teeth so instead of going straight vertical they are rounded?
Yes, that is typically what is done in vex transmissions. The easiest way to do this is to put the gear on a shaft, put that in a drill, and rotate the gear against sandpaper or a file. Hold the abrasive item at a 45 degree angle to the gear around the top edge until it’s noticeably angled. Hope this helps!
3 hours in cad and two hours to add to the real bot. We are rebuilding and yes, there will be transmission(s) on our worlds robot. However, our states robot didn’t have any.
A shorter piston would also go a long way to help with air consumption and space requirements, the throw on that piston is far too long that what is necessary
Unfortunately vex only has two piston sizes, they are very similar in length and the other one uses twice the Air but yes, a pancake cylinder would be ideal
The piston we are triggering slides a set of two gears side to side to change the ratio between the motors and the drive wheels. One setting outputs 333rpm and the other 120rpm. We made it so that this bot could always win the tall goal but it was also 33 pounds and that ratio was causing burnout so after auton we kept it on low gear.
