Is it just me, or are the rotors spinning WAY faster than usual at Southern Cross? It looks like the airship is actually trying to take flight.
Darn, I thought you were going to say they spin backwards like the toilets do when they flush (yes, I know this is a myth. Don’t ruin the joke).
You must be confused. The Southern Cross Regional is in the Southern Hemisphere, so the rotors are just spinning backwards. :rolleyes:
But yes, some of the Rotors 2-4 on the airships do seem to be spinning much faster than I remember. Perhaps they are using a new field with new/different motors?
I beat Hallry to the joke. He must only be fast with FRC Blog posts.
Video?
Do they use 220V there? 
The interesting thing is that while rotor 2 spins really fast on both airships, rotor 3 doesn’t.
The stream is live. Just wait for a match.
I noticed this as well. I’m wondering if they used replacement motors on Rotor 2 or something along those lines, it’s definitely strange behavior. I’ve seen events have different speed rotors (some being slow, and others being around the speed of Rotor 3 here), but never this fast.
Maybe it’s just really hot down there and they want to cool off the pilots to keep them from fainting? ::safety::
While it’s probably just due to manufacturing tolerances cheapo Chinese-rebrand Andymark motors, the Meanwell DC switching PSUs used on the field to power the motors some times supply more power when used on 240 volt AC used in Australia versus 120 volts AC in North America.
It also could be that HQ forgot to check that the voltage output was accurate from the factory. The PSUs have a little pot to adjust the output from 10v-14v that needs to be set and can often jiggle around in transport.
That seems dangerously fast. Since the field was one of the first few shipped out. I wonder if FIRST turned down the motor speeds on all the other fields, but were unable to change this field because it already left FIRST HQ.
Here is a GIF of the routers http://i.imgur.com/PighT18.gifv
The rotor 2 is taking the wind out off rotor 3!
The Australian Field is the same field from the field tour videos as shipped from FIRST HQ.
It should be noted that during practice yesterday, I believe the field was having trouble with the blue alliance’s airship and boiler.
Maybe it because they are upside down?
Field may be same, but that rotor speed is not … nor is voltage in?
Just checked the stream, holy ****! Almost certain its a PSU voltage adjustment issue as I don’t believe the FMS has any control over speed as it’s likely just a relay turning the rotor on and off. Someone should really use a multi-meter and check the voltage output or they might end up burning up the motor.
http://i.imgur.com/PighT18.gifv
Footage from the Southern Cross stream (open it in a new tab if it isint working)
WELCOME TO THE THUNDERDOME!
Assuming the voltage does not go above ~18-24 VDC they shouldn’t have any issues with the voltage burning up the motors. (Jerry, the FTA and Director of Engineering at AndyMark, has done some completely non-scientific measurements, running the motors up to I believe 36 VDC with some loading, and they did not burn up. This was during our Cardboard Robot Fight Night, check out the video on our Facebook page!) The gearboxes would likely fail first. The other thing could be that the NeveRest motors used on those were of a different gearbox reduction. I am sure Jerry has looked into this already, but I will be sure to let him know about the observations made in this thread!