Chief Delphi - Why Hasn't first gone Brushless?

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- - Why Hasn't first gone Brushless? (http://www.chiefdelphi.com/forums/showthread.php?t=75542)

EricVanWyk

09-04-2009 09:53

Re: Why Hasn't first gone Brushless?

Quote:

Originally Posted by Jared341 (Post 848008)

While we're on the topic of allowable actuators, I would really like if we were allowed to use electric solenoid actuators. There are so many applications (dog-style shifters, brakes, clutches, latches, etc.) where I'd love to be able to eschew a full-size motor or piston, and where a servo just doesn't cut it.

I was thinking the same thing a few weeks back. Do you know of any specific models that might fit?

On the AC motor "topic", thanks for the chuckles. Greg pointed out that it would make designing the PD a bit easier - just get a plug strip! Now we just need to find 3 phase AC batteries...

Jared Russell

09-04-2009 10:07

Re: Why Hasn't first gone Brushless?

Quote:

Originally Posted by EricVanWyk (Post 848014)

I was thinking the same thing a few weeks back. Do you know of any specific models that might fit?

Eric,

I'm sure that Al will know much more on the subject than I do, but I have used models from Pontiac Coil that are sold on DigiKey. Looking at DigiKey, most are in the $20-40 range and are 12V, .5-1.5" stroke, and offer holding torque on the order of a few to tens of ounces.

artdutra04

09-04-2009 11:07

Re: Why Hasn't first gone Brushless?

Let alone three-phase power on FRC robots, I just want [480v] three-phase power in my house!

There are tons of used (still in good condition) three-phase Bridgeport manual milling machines on eBay all the time within driving distance that are selling for $2k-$5k. Some even come with DROs! Who wouldn't want a full size manual mill at their house? :D

But the electric companies are like you're residential, grumble, grumble, single-phase 240v only, grumble, grumble, just use a rotary phase-converter, grumble, grumble.

kamocat

09-04-2009 12:45

Re: Why Hasn't first gone Brushless?

Quote:

Originally Posted by Al Skierkiewicz (Post 848010)

I wholeheartedly agree. There are a variety of great solenoids that eams could put to great use if allowed. Additionally, electrically operated clutches would be nice.

I can't wait for the day when tool changers are a reasonable option on an FRC robot.

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