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-   -   Servos - How much can they lift? (http://www.chiefdelphi.com/forums/showthread.php?t=24009)

Greg Needel 18-01-2004 18:22
Re: Servos - How much can they lift?
 
Quote:
Originally Posted by pras870
correction, you can't use as many as you want, you're limited to 4 if memory serves.

nope that was in previous years...this year you get as many as you want

Joe Ross 19-01-2004 09:20
Re: Servos - How much can they lift?
 
Quote:
Originally Posted by Greg Needel
nope that was in previous years...this year you get as many as you want
In the past, a servo has been considered a motor. I don't see anywhere in the rules where this was specifically changed. In that case, I would ask FIRST, however, I would expect that they would say that you can't use more servos based on the fact that they said you can't use the EDU bot "motors" which are basically servos.

SarahB 19-01-2004 09:42
Re: Servos - How much can they lift?
 
Quote:
Originally Posted by Joe Ross
In the past, a servo has been considered a motor. I don't see anywhere in the rules where this was specifically changed. In that case, I would ask FIRST, however, I would expect that they would say that you can't use more servos based on the fact that they said you can't use the EDU bot "motors" which are basically servos.
I think that comment was in reference to the pneumatic cylinders.

cs2105 19-01-2004 10:14
Re: Servos - How much can they lift?
 
--------------------------------------------------------------------------------

Does anyone know if we are allowed to purchase additional servo motors and use them at the same time as those we were supplied with by the kit?

Katie Reynolds 20-01-2004 15:38
Re: Servos - How much can they lift?
 
Quote:
Originally Posted by cs2105
Does anyone know if we are allowed to purchase additional servo motors and use them at the same time as those we were supplied with by the kit?
If you're looking at buying a different brand/kind of servo than those provided in the kit, the answer is no (see the Part Use Flowchart).

<R70> Specific items NOT allowed include: ...electric motors different from or in addition to those in the kit.

Like Joe Ross said before, FIRST considers servos to be motors. I would say you can't use more than what you're provided with.

Matt D 20-01-2004 21:15
Re: Servos - How much can they lift?
 
just to clarify, when I said you can use as many as you want I was talking about pneumatic cylinders. as for motors, you are limited to those in the kit, including servos (as everyone has already said).

Joe Ross 21-01-2004 16:25
Re: Servos - How much can they lift?
 
Quote:
Originally Posted by Joe Ross
In the past, a servo has been considered a motor. I don't see anywhere in the rules where this was specifically changed. In that case, I would ask FIRST, however, I would expect that they would say that you can't use more servos based on the fact that they said you can't use the EDU bot "motors" which are basically servos.
Well, FIRST changed their defintion this year (which is why I suggested asking FIRST).

Quote:
Q: Are servos treated as electronics (in which case we can have an unlimited number of them) or are they treated as motors (in which case we are limited to 2)?

A: Electronics.

ark_1230 21-01-2004 20:27
Re: Servos - How much can they lift?
 
Quote:
Originally Posted by pras870
correction, you can't use as many as you want, you're limited to 4 if memory serves.
In past years yes, this year no.

Refer to rule R54 third bullet in the robot section of the manual:

"There is no limit to the number of solenoid valves, air cylinders, and connecting fittings you may use on your robot. They must, however, be “off the shelf” pneumatic devices rated by their manufacturers for pressure of at least 125psi. Besides the “free” pneumatic components listed on the Pneumatic Components Order form, you may use additional air cylinders or rotary actuators, however, they must be identical to those listed on the Pneumatic Components Order form, and obtained from a Bimba or Parker Hannifan distributor."

Just wanted to get thing straight :D

Joe Ross 31-01-2004 19:03
Re: Servos - How much can they lift?
 
Quote:
Originally Posted by Joe Ross
Well, FIRST changed their defintion this year (which is why I suggested asking FIRST).
Quote:
Q: Are servos treated as electronics (in which case we can have an unlimited number of them) or are they treated as motors (in which case we are limited to 2)?

A: Electronics.
See Team Update 6, since FIRST corrected themselves again. You may only use the 2 servos in the kit.


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