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-   -   How much Power? (http://www.chiefdelphi.com/forums/showthread.php?t=153965)

Richard.Varone 20-01-2017 13:11

Re: How much Power?
 
Quote:

Originally Posted by s_forbes (Post 1633969)
I think you might run out of spots on the power distribution panel before you get all of those motors installed!

I assure you that we have open spots left in our PDP.

We are a fan of rapid production quality prototyping, so I also assure you we have built a full prototype and it is almost fully functional ;) Teasers will come this weekend probably.

The motor math is not as it seems

GeeTwo 20-01-2017 13:31

Re: How much Power?
 
4 CIMs drive
1 CIM climb (with option for second)
Gear hanger (v1) is passive (get going quick for drive practice)
Active gear intake and hanging still in flux, but likely 2 or 4 BAGs and a half dozen or so servos.
Fuel: none planned at this time. Probably no more than a bag and a couple of servos at most.

Billfred 20-01-2017 13:37

Re: How much Power?
 
Right now, here's the Iron Kings list:

6 CIMs (chance we change to 4 and 2 mini CIMs)
1 775pro (with provisions for a second, if we need it)
1 Snow Blower Motor
2 9015s

piersklein 20-01-2017 13:42

Re: How much Power?
 
4 CIM Drivetrain
2 775 Intake
4 775 Shooter (or 1 bench grinder. haven't decided yet)
2 775 Climber

GeeTwo 20-01-2017 13:57

Re: How much Power?
 
Quote:

Originally Posted by Richard.Varone (Post 1633946)
Drive: 6x CIMs + 2 Minis
Shooter: 2x 775 Pros
Climber: 4x CIMs + 2x 775 Pros
Intake: 1x 775 Pro/Bag
Indexer: 1x 775 Pro/Bag

Tehehehe yes those numbers are correct and legal ;)

Kudos to anyone that can figure out how crazy we are

OK, a minimum of 11 motors if the Bag option is used:
  • 4 CIMs which can power either drive or climber
  • 2 CIMS + 2 minis which power drive but cannot be switched to climber
  • 2 775 pros for the climber, possibly the same as the 2 for the shooter
  • 1 Pro/Bag for the intake, possibly the same as the one for the indexer

Wild guess:
  • Mecanum, 2 CIMs on rear wheels, 1+1 on front (or vice versa).
  • Another shaft friction couples with/engages with shooter and rear wheels to power the climber.
  • Just for kicks, the same motor powers the intake and indexer, because while you're shooting, you're only taking in your missed shots at the intake.

pmangels17 20-01-2017 14:03

Re: How much Power?
 
Quote:

Originally Posted by GeeTwo (Post 1634011)
Wild guess:
  • Mecanum, 2 CIMs on rear wheels, 1+1 on front (or vice versa).

I'm away at college so I'm not sure, but last I heard we won't be using mecanums. We've got a nifty new idea for 10-sided wheels that will give us more than point-contact traction every tenth of a rotation, thereby increasing our pushing power. All four wheels milled on a 5 axis CNC out of solid 7075 Aluminum billet.

JohnFogarty 20-01-2017 14:04

Re: How much Power?
 
1102

Drive - 4 x CIM motors
Intake - 1 or 2 Bag motors
Agitator - 1 x Bag motor
Shooter - 2 x 775 Pro motors or 3 x mini CIM motors
Climber - 2 x CIM motors.

Oblarg 20-01-2017 14:05

Re: How much Power?
 
Quote:

Originally Posted by pmangels17 (Post 1634018)
I'm away at college so I'm not sure, but last I heard we won't be using mecanums. We've got a nifty new idea for 10-sided wheels that will give us more than point-contact traction every tenth of a rotation, thereby increasing our pushing power. All four wheels milled on a 5 axis CNC out of solid 7075 Aluminum billet.

Don't you mean 7071?

pmangels17 20-01-2017 14:07

Re: How much Power?
 
Quote:

Originally Posted by Oblarg (Post 1634022)
Don't you mean 7071?

Crap, you're right. Looks like I need to recheck the numbers.

Sperkowsky 20-01-2017 14:14

Re: How much Power?
 
4 Cims - Drive
1 775pros - Intake/indexer
2 775pros - Shooter
1 Bag - Climber
Either 1 Mini-Cim or another 775pro - Intake

pmattin5459 20-01-2017 14:15

Re: How much Power?
 
Last I heard:
6 CIM drivetrain
Four cylinders (2 gear delivery, 2 shifting)
1 or 2 CIM-type motors for climbing

JohnFogarty 20-01-2017 18:08

Re: How much Power?
 
Quote:

Originally Posted by Sperkowsky (Post 1634028)
4 Cims - Drive
1 775pros - Intake/indexer
2 775pros - Shooter
1 Bag - Climber
Either 1 Mini-Cim or another 775pro - Intake

1 Bag for a climber....? How long does it take your climber to reach the top?

frcguy 20-01-2017 18:26

How much Power?
 
Drivetrain: 4 CIMs

Intake: 1 775pro

Scale: 1 MiniCIM

Everything else: not using motors ;)

Ari423 20-01-2017 18:30

Re: How much Power?
 
Quote:

Originally Posted by JohnFogarty (Post 1634176)
1 Bag for a climber....? How long does it take your climber to reach the top?

Assuming they're running at max power with a full battery, top speed of a BAG pulling a full robot's weight is about .6 ft/s. If their climber starts at the floor, it would take about 8 seconds. If their climber starts at max robot height, could be as short as 3 seconds. This is the fastest a single BAG motor could possibly run, but engineering tradeoffs could slow the climber down significantly.


P.S. - this seems like a good place to plug my new whitepaper, which allows you to calculate the optimal gear ratios and top speed for a given motor and load (found here)

Sperkowsky 20-01-2017 18:30

Re: How much Power?
 
Quote:

Originally Posted by JohnFogarty (Post 1634176)
1 Bag for a climber....? How long does it take your climber to reach the top?

Should be about 4 seconds.

Its hard to say until we have actually built the final mechanism but Jvn calculator should do for now.


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