|
Re: Scrub friction
For a 12x18" robot going to six wheels would be awful tight unless you went smaller than 4" wheels. I would recommend changing the two at the radio end to 4" omnis to minimize the scrub force resisting rotation, and to maximize the scrub force in resisting strafing motion, especially if it is applied near the CoG.
You may have some swaying motion when you go to two omni wheels, whichever end you put them on. You will probably have more swaying one direction than the other - experiment with this to determine which end should be the preferred "front". As I recall from our Ultimate Ascent 'bot, we did better to push from the solid wheels towards the omnis, but we were not driving the omnis, so YMMV.
I'm curious - you referred to this as a tote 'bot. How are you going to secure the tote to the chassis? One big hole or four little ones?
__________________
If you can't find time to do it right, how are you going to find time to do it over?
If you don't pass it on, it never happened.
Robots are great, but inspiration is the reason we're here.
Friends don't let friends use master links.
Last edited by GeeTwo : 01-05-2015 at 17:41.
|
Reffing a FIRST event is unlike being an ump or a ref at any other event. Where else is a game invented each year and over 1000 teams play this game within 3 months of its birth? - Andy Baker [more] 
01-05-2015, 17:34
Threaded Mode