Why did you choose belts for the final stage instead of sticking with gears? Also, what’s your final reduction?
Because this shifts, one side is high gear and one side is low, and it’s a clever way to break free of the ratio pairing limitations inherent to gear designs?
The high speed has got to be nuts. What’re the specs?
A well decided ctc distance will give you more gear pairings than belts ever can in the same amount of space. Vex/WCP simply sell do many options of gears that if you’re looking to change ratio down the road using those gears is the way to do it.
Also, I’m not sure it does actually shift? Maybe the OP can clarify?¿
I originally put it there because I thought there wasn’t enough room to put in 2nd stage gears as the 1st stage gear was too big. I also thought I would have ground clearance problems. This turned out to be a stupid mistake though as I was totally wrong about that.
I’ve now switched to a geared 2nd stage. Much less riskier that 3mm gt2 belts.
Yeah… No. I’m not that clever lol
The speed ranges between 14 and 17 ft/s depending on the gearing config.
(after applying a 19% speed loss constant).
You’re totally right about that one.
It doesn’t shift; the philosophy behind this drive is to be so fast and agile that you’d never need to be in a pushing match. We’ll add in soft limits to keep the current in check.
It looks like your lower motor has most of the front cooling slots blocked. The more air thru the motors the better.
…So I got a little too excited about that red plate in the background. Just an encoder mount then? Or something else?
:duncecap:
My comments are inspired by getting “too clever” and pretending that first stage gear is used as an idler gear into one very small reduction for high speed, and then the pulley is used to allow a decent reduction in low speed, without having to go to a larger wheel to fit a gear reduction of the same ratio. ie the ground clearance OP referenced, which has since been revised anyway.
Rereading my own text… “Limitation of gears” is not really what I meant, more “limitations of extreme packaging requirements on those gears”?
What is the empty hole on the front plate for?
Where did you get pinion gears for the 775 pros?