pic: Stripped VexPro gear

[pfreivald]

Originally Posted by R.C.

Jeff,

I totally agree with you, I thought we made this change over. I will check and get this implemented, also have a few other changes planned.

That's awesome, thanks!

(I'll probably still drill a bunch of holes in the steel, but will never go with aluminum gears in a drivetrain again.)

[BoilerMentor]

We broke one at our district championship event. The interesting and slightly concerning thing is that it wasn't at a particularly high load, just a sustained, consistent torque load due to a misaligned limit switch. The gear that failed is driven by a PG27 with a 16t steel gear on the output shaft and is only driven at partial power.

Unfortunately there isn't a steel option like these: http://www.vexrobotics.com/vexpro/mo...ore-gears.html

We only use a portion of the gear's circumference to actuate our intake, so rotating the gear is an option we'll likely pursue at champs if we have the down time.

[pilleya]

Originally Posted by BoilerMentor

The gear that failed is driven by a PG27 with a 16t steel gear on the output shaft and is only driven at partial power

Does the PG27 have a 9015 or a RS775-125, as there is a massive difference in torque and power output.

[BoilerMentor]

Originally Posted by pilleya

Does the PG27 have a 9015 or a RS775-125, as there is a massive difference in torque and power output.

RS775. It broke on the "down" actuation though, which is much lower applied power systematically. My guess is it's actually more related to shock load of the intake coming up against the hard stop that sets the height. It didn't affect our performance this time, so it isn't nearly as big of a deal.