Getting more range out of a 4 wheel shooter

[eddie12390]

Originally Posted by EricH

"There's never enough time to do it right, but always enough time to do it over." Guess what, you have a week to do it over, because 5 weeks wasn't long enough to do it right.

The CIM-U-LATOR runs a 2.7:1 reduction; the 775 turns at 19500 rpm with no load. This gives 7222 rpm going into the CIMple box (about 2K more RPM than a CIM). The CIMple box has a 4.67:1 ratio; this means that the output is spinning at about 1500 rpm. Torque-wise, however, you went from 166.4 oz-in stall torque (motor only) up to almost 2100 oz-in (motor through two gearboxes). That's a bit more than you should ever need for a lightly-loaded shooter! (Your total reduction is about 12.61:1; that's a wee bit on the high side for something that needs to spin fast.)

Pull the CIMple box out, and your speed goes up by about a factor of 5, your stall torque goes down by the same factor, give-or-take a bit for loading and speed. That should give a much longer range, while still allowing you to load and fire easily without jamming up.

Alright I'll forward this on to our coach. I was unaware that the difference would be THAT large. Thank you for your time and for the information.