Most robots at the In the Zone, in my opinion, will be picking up a mobile goal and carrying it with them. This seems like a given until you consider the effects and additional 3.7lbs will have on a robot’s motors, especially if a team is attempting to use high-speed motors. Is it possible to have this much-added weight onto a robot, using high-speed motors, without those motors browning out – or will we all result to either not picking up the goal and having a faster robot, or picking it up and using standard motors?
Well, for a short answer, it depends on your bot, it’s weight, number of drive motors you’re using, etc.
For a long answer, a lot of internal stackers in Indiana at least (bots that carry the mobile goal) are doing about 6 high speed motors on their drive, on average. If I had to give you a weight, I would say about 12 or 14 pounds on average for them. For my bot I’m using turbo and it’s working fine so far. However, I’m also doing an 8 motor drive and the whole robot is probably going to weigh about 10 pounds when I’m done with it.
But it really depends on your robot. Hope this helps 
Just putting this out there, I have two torque gear sets on my mobile goal lift, two speed sets on my main lift and the rest are all turbo
as long as you have 6 motors on your drive turbo should be fine with a mid-average weight bot, but if you stay light you could potentially get away with 4 motors(though i wouldn’t recommend it even if you can, just because you can do something doesn’t mean you should do it)
(edit - this is assuming 4" omni wheels for the drive)