Search: Posts Made By: dirtybird
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02-06-2010, 03:49 AM
Replies: 48
Views: 43,994
Posted By dirtybird

I have an adjustable lab power supply(Mastec...

I have an adjustable lab power supply(Mastec 5020) that I can connect to two motor leads in series with a 10 ohm resistor and adjust to 1 amp within +/- 0.1V. I need the resistor or the PS thinks its...
02-05-2010, 11:05 PM
Replies: 48
Views: 43,994
Posted By dirtybird

How do you calculate Rm? If you can't or don't...

How do you calculate Rm?
If you can't or don't want to answer this, can you refer me to a book or an article that will tell me ?
When I went thru EE college(60 years ago) they did not have such a...
02-05-2010, 08:42 PM
Replies: 48
Views: 43,994
Posted By dirtybird

Whats Rm? What does Motocalc use for their...

Whats Rm?
What does Motocalc use for their calculations?
02-05-2010, 04:46 AM
Replies: 48
Views: 43,994
Posted By dirtybird

Did you notice the Sears Craftsman #82369 meter...

Did you notice the Sears Craftsman #82369 meter is also made in China?
02-04-2010, 05:33 AM
Replies: 48
Views: 43,994
Posted By dirtybird

I have Hacker, Scorpion, Turnegy, and Eflite...

I have Hacker, Scorpion, Turnegy, and Eflite motors.
The Hacker equivalent motor to the Turnegy has an internal resistance, according to its spec, of 0.016. That means it will be more efficient than...
02-04-2010, 04:49 AM
Replies: 48
Views: 43,994
Posted By dirtybird

I used the two DVM method outlined above. I am...

I used the two DVM method outlined above. I am using the Sears clamp on ammeter for both the amp reading and the voltage reading. This meter reads DC amps and has an autoranging VM. Its quite...
02-03-2010, 10:53 PM
Replies: 48
Views: 43,994
Posted By dirtybird

I have obtained several motors from Hobbycity....

I have obtained several motors from Hobbycity. The motors seem to be well made but I think some of the specifications given are suspect. I measured the resistance between two of the three leads of...
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