Quote:
Originally Posted by cadandcookies
RE: Neverest 60 gearmotors (all the Neverest motors are the same motor with different gearboxes, correct me if I'm wrong, Billfred)
The actual motor is compatible with anything (okay, I've only seen them in VPs and Banebots) that will take a 550 motor. This has become popular in FTC this year-- I know some teams running them through VersaPlanetary gearboxes and one of the FTC Robot In 1 Weekend teams used them on their shooters with Banebots gearboxes.
I think that FRC teams that use them (presuming they're legal), will be very pleasantly surprised compared to the old garbage Tetrix motors. I've seen a Neverest 40 stall for a full two minutes and perform just fine for the rest of a tournament. Compare this with the Tetrix motors that burned out if you looked at them funny, they're a major improvement. I would hesitate to call these guys "magic smoke generators" after watching teams abuse the different flavors of Neverest for the past few years. The only failure mode I've ever seen on them is due to improper/uncareful use of set screws, not due to the motors themselves.
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The two things I've seen that tend to do in NeveRests are:
1) Set screw hub maladies. We released
D-bore Nubs this year to help solve this problem.
2) The NeveRest 20 gearhead is less tolerant of shock loads than the 40 and 60 gearheads. (The number is the reduction from the bare motor: 20:1, 40:1, 60:1.) However, per
Kate's blog post,
only the NeveRest 60, am-3103, as pictured here has been announced as legal at this time and (as far as I've seen) FIRST hasn't announced whether switching (or removing) the gearhead will be an approved modification for the 2017 FIRST Robotics Competition. So that may be a moot point.
Quote:
Originally Posted by EricH
Question for anybody who has some older motor specs lying around:
Can someone do a quick comparison of the Globe motor/gearbox setup (discontinued for FRC purposes about a decade ago) and the NeveRest 60? Seems like somewhere around the same power and form factor, off the top of my head--think the Globe might have had more power, though.
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This white paper shows the Globe has a free speed of 79.87 RPM and 3195 oz-in of stall torque (at 21.58 amps). The NeveRest 60 has a free speed of 105 RPM and 593 oz-in of stall torque (at 11.5 amps).