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  #16   Spotlight this post!  
Unread 20-01-2017, 13:11
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Re: How much Power?

Quote:
Originally Posted by s_forbes View Post
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
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  #17   Spotlight this post!  
Unread 20-01-2017, 13:31
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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.
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Unread 20-01-2017, 13:37
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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
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Unread 20-01-2017, 13:42
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Re: How much Power?

4 CIM Drivetrain
2 775 Intake
4 775 Shooter (or 1 bench grinder. haven't decided yet)
2 775 Climber
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  #20   Spotlight this post!  
Unread 20-01-2017, 13:57
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Re: How much Power?

Quote:
Originally Posted by Richard.Varone View Post
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.
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Last edited by GeeTwo : 20-01-2017 at 14:19.
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Unread 20-01-2017, 14:03
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Re: How much Power?

Quote:
Originally Posted by GeeTwo View Post
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.
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  #22   Spotlight this post!  
Unread 20-01-2017, 14:04
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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.
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Last edited by JohnFogarty : 20-01-2017 at 14:07.
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Unread 20-01-2017, 14:05
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Re: How much Power?

Quote:
Originally Posted by pmangels17 View Post
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?
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Unread 20-01-2017, 14:07
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Re: How much Power?

Quote:
Originally Posted by Oblarg View Post
Don't you mean 7071?
Crap, you're right. Looks like I need to recheck the numbers.
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  #25   Spotlight this post!  
Unread 20-01-2017, 14:14
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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

Last edited by Sperkowsky : 20-01-2017 at 17:11.
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Unread 20-01-2017, 14:15
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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
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Unread 20-01-2017, 18:08
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Re: How much Power?

Quote:
Originally Posted by Sperkowsky View Post
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?
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Unread 20-01-2017, 18:26
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How much Power?

Drivetrain: 4 CIMs

Intake: 1 775pro

Scale: 1 MiniCIM

Everything else: not using motors
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  #29   Spotlight this post!  
Unread 20-01-2017, 18:30
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Re: How much Power?

Quote:
Originally Posted by JohnFogarty View Post
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)
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Last edited by Ari423 : 20-01-2017 at 18:47.
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Unread 20-01-2017, 18:30
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Re: How much Power?

Quote:
Originally Posted by JohnFogarty View Post
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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