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 Chief Delphi 2007 Motor Specs
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#31
01-13-2007, 09:54 PM
 banebots Registered User no team Join Date: Jan 2007 Location: Colorado Posts: 13
Re: 2007 Motor Specs

We have posted drawings of the 36mm and 42mm gearboxes on our website. You can find a link to them at the bottom of the product descriptions.

BaneBots
#32
01-14-2007, 02:42 AM
 GramNegative Registered User FRC #1816 Join Date: Apr 2006 Location: Minnesota Posts: 5
Re: 2007 Motor Specs

Earlier, Rickertsen2 posted a formula for motor output torque using these calculated values:

torque = Kt*(Vin-Kv*rpm)/r

Does anyone know if there is there an advantage to using this formula over:

Torque = (-T0/Wf)*W+T0, Where T0 is torque at stall and Wf is free speed

If so, is there more documentation somewhere that explains how/why this works better?

Thank you,
Chris
#33
01-14-2007, 02:48 AM
 Paul Copioli President, VEX Robotics, Inc. FRC #3310 (Black Hawk Robotics) Team Role: Engineer Join Date: Jun 2001 Rookie Year: 2000 Location: Rockwall, TX Posts: 1,486
Re: 2007 Motor Specs

Quote:
 Earlier, Rickertsen2 posted a formula for motor output torque using these calculated values: torque = Kt*(Vin-Kv*rpm)/r Does anyone know if there is there an advantage to using this formula over: Torque = (-T0/Wf)*W+T0, Where T0 is torque at stall and Wf is free speed If so, is there more documentation somewhere that explains how/why this works better? Thank you, Chris
The equation using torque constant (Kt) and back EMF constant (Kv) is the theoretically pure way to calculate motor performance. However, most motor manufacturers will not give you all of these numbers. All motor manufacturers will give you stall T, free speed, Stall current, and free current (no load current) and it is all you need to size motors and gearboxes for the job.
#34
01-14-2007, 03:11 AM
 GramNegative Registered User FRC #1816 Join Date: Apr 2006 Location: Minnesota Posts: 5
Re: 2007 Motor Specs

Thank you for the help. Now that my curiousity is satisfied, I think it's time for bed.
#35
01-28-2007, 11:32 AM
 darkorbit Electrical?! AKA: Jin Lem FRC #0069 (HYPER ROBOTICS) Team Role: Alumni Join Date: Jan 2006 Rookie Year: 2005 Location: Quincy, MA Posts: 57
Re: 2007 Motor Specs

Does anyone have the specs for the window motor or more importantly the connector for the window motor? Or if someone can tell me how do I hook up a window motor, that would be highly appreciated.
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Last edited by darkorbit : 01-28-2007 at 11:45 AM.
#36
01-28-2007, 11:59 AM
 bmusser Brian Musser FRC #1504 (Desperate Penguins) Team Role: Engineer Join Date: Oct 2001 Rookie Year: 2000 Location: Lansing, MI Posts: 39
Re: 2007 Motor Specs

Go to the following link for the motor specs:

http://www2.usfirst.org/2007comp/oth...tices_RevA.pdf

The motor specs are on page 8.
#37
01-28-2007, 10:03 PM
 Gary Dillard Generator of Entropy AKA: you know, the old bald guy FRC #2973 (The Mad Rockers) Team Role: Engineer Join Date: Nov 2001 Rookie Year: 1998 Location: Huntsville, AL Posts: 1,600
Re: 2007 Motor Specs

Quote:
 Originally Posted by darkorbit Does anyone have the specs for the window motor or more importantly the connector for the window motor? Or if someone can tell me how do I hook up a window motor, that would be highly appreciated.
I don't know the specs on the connector, but here's how we've done it in the past and it works just fine (I'll probably get kicked out of the junior EE club for these instructions):

Using a hacksaw or coping saw, cut the plastic housing of the connector back to the bottom of the socket, and then cut it lengthwise between the two conductor pins and basically break the plastic away. This will leave you the 2 pins which are about a half inch long sticking out. Solder your power wires to these 2 pins and wrap with electrical tape.
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#38
01-28-2007, 10:12 PM
 Arefin Bari Registered User AKA: Ari FRC #0108 (SigmaC@T) Team Role: Engineer Join Date: Mar 2003 Rookie Year: 2001 Location: Ft. lauderdale, FL Posts: 3,261
Re: 2007 Motor Specs

Quote:
 Originally Posted by darkorbit Does anyone have the specs for the window motor or more importantly the connector for the window motor? Or if someone can tell me how do I hook up a window motor, that would be highly appreciated.
The way Gary explained it, it will work. To make your life easier, there are connectors that comes in the KOP for the window motors. You can use those.
#39
01-31-2007, 04:43 PM
 paulcd2000 Accidentally speaks in C AKA: Paul Dagnelie FRC #1719 (The Umbrella Corp.) Team Role: Programmer Join Date: Jan 2006 Rookie Year: 2006 Location: Baltimore Posts: 368
Re: 2007 Motor Specs

i've found that a lot of the motor specs are on the respective companiess pages. If you can't find what you need, try looking there. I've found it very helpful!
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#40
02-05-2007, 11:20 AM
 natis natalia AKA: natalia soberanes FRC #0987 (High Rollers) Team Role: Alumni Join Date: Jan 2006 Rookie Year: 2006 Location: Las Vegas Posts: 65
Re: 2007 Motor Specs

stupid question:
I was trying to find the connectors for the banebot motor does anyone has a website ???
thanks
natalia
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#41
02-12-2007, 04:40 PM
 techknow 1685 Registered User FRC #1685 Join Date: Feb 2007 Location: Worcester, MA Posts: 2
Re: 2007 Motor Specs

Hello,
I just registered to cheif delphi, so i am new at using this site.
I hope i am doing this right.
Anyway, does anybody know what kind of what kind of motors can we use for the robot?
Can we use a motor from power drill?
#42
02-12-2007, 07:03 PM
 Kit Gerhart Mentor, coach, whatever-- FRC #0233 ("The Pink Team") Team Role: Mentor Join Date: Nov 2001 Rookie Year: 1996 Location: Cape Canaveral, FL USA Posts: 562
Re: 2007 Motor Specs

Quote:
 Originally Posted by techknow 1685 Hello, I just registered to cheif delphi, so i am new at using this site. I hope i am doing this right. Anyway, does anybody know what kind of what kind of motors can we use for the robot? Can we use a motor from power drill?
You can use the motors in the kit plus two additional small CIM's and one additional large CIM.
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