set screw identification
 

Hi - does anyone know the size of the set screw for a Tetrix axle wheel collar 739092? I was also wondering what Andymark motor would work well with a Tetrix motor mount and would spin faster for shooting balls.

thanks

The AndyMark NeveRest 3.7:1 has been shown to work for a side by side wheeled shooter.

Re: set screw identification
 

Based on some measurements of the photo, it looks like a 10-32 with a 3/32" allen drive.

Re: set screw identification
 

If you are limited to purchasing only from Andymark the NeveRest 3.7:1 is your only real simple option and will work well with the Tetrix motor mount:

http://www.andymark.com/NeveRest-3-7...-p/am-3461.htm


The lowest reduction gearbox in the Helical gearbox series( 20,40,60) is the 20:1 which has a free-speed of around 300rpm. This is approximately twice as fast as the Tetrix DC motor, but unless you have a wheel with a very large diameter( or a two wheeled shooter) this will still be far too slow.

You could use something like a 20:1 and have another set of gears that increase the speed( something like a 1:3 or 1:4), but it ends up a little complicated.

Because the NeveRest motor is a 550 class motor there are quite a few different gearboxes available to use if you are ok with ordering from another supplier.

- The VersaPlanetary Gearbox which will allow you to adjust your flywheel speed easily: http://www.vexrobotics.com/vexpro/mo...planetary.html

-The 4:1 Planetary Gearbox for RS550 available directly from Banebots( Andymark is out of stock of this particular gearbox):
http://www.banebots.com/product/P60S-4-5.html

However neither of those two gearbox are compatible with the Tetrix motor mount, the VersaPlanetary has a few different mounting plates available which shouldn't be too difficult to integrate with the rest of the Tetrix construction system.

Re: set screw identification
 

From the FTC forum (2015 thread):

Most hardware stores have thread gages if you have a loose set scew to test.