VEXpro 2016

[josesantos]

TL;DR: 775Pro looks good. New motor page is awesome. What is happening during the peak power test?

Glad to see a viable (and then some)* replacement for the 18V BB RS-775. Is the 775pro made by CCL/CIM? If so, they make all the high power (149 W+) FRC motors between the CIM, Mini CIM, BAG, and AndyMark 9015...

In any case, I was super stoked to see the new motors website. Consistent data from a reliable source is always a good thing when considering which motor(s) to use, and as student/motor nerd I think it's great how transparent VEX is about testing.

Speaking of which, can someone please explain to me what exactly is happening during the peak power test? From my understanding the motor is running open loop with a regulated power supply and receives a controlled "half stall" torque. Over time the power output (which I assume is actually measured velocity times controlled torque) decreases. Is the motor just heating up over time and therefore unable to produce as much mechanical work? Is the reduced maximum power permanent? Some of the motors look like they burn out before 3 minutes, but I wouldn't assume one way or the other for the sealed can motors.

*Awaiting a season's worth of stress testing for final opinions, but it definitely looks good on paper.

[asid61]

Of all of the new products, the one I most can't wait for is the 775pro! I want to check out the plastic versaframe too, but I want to see some specs on it, particularly when compared to 0.040" or 0.0625" aluminum box tubing.

[timytamy]

Has anyone heard of the "Hero Gadgeteer"?

Page 18 of http://content.vexrobotics.com/vexpr...User-Guide.pdf shows the encoder being connected to this.

It looks like some sort of CAN enabled IO board or controller, designed to interface with TalonSRX style IO connectors.

[Knufire]

Originally Posted by timytamy

Has anyone heard of the "Hero Gadgeteer"?

Page 18 of http://content.vexrobotics.com/vexpr...User-Guide.pdf shows the encoder being connected to this.

It looks like some sort of CAN enabled IO board or controller, designed to interface with TalonSRX style IO connectors.

http://www.ctr-electronics.com/control-system/hro.html

[Chris is me]

Originally Posted by asid61

Of all of the new products, the one I most can't wait for is the 775pro! I want to check out the plastic versaframe too, but I want to see some specs on it, particularly when compared to 0.040" or 0.0625" aluminum box tubing.

I expect that it will behave similarly to polycarbonate 1x1 tubing teams used in 2014 - fairly strong, somewhat flexible, great for applications outside the frame perimeter. I'm glad that there's finally a great source for this stuff!

Great products all around from Vexpro this year, very excited to see what teams can do with the new 775, drop modules, etc.

[Michael Hill]

I love all the motor data.

I also would REALLY like to see the data on the BB RS-550. After using them in our elevator last year, I feel like the published specs weren't quite...right.

[jman4747]

I think there is a typo on the 775pro page. It says the shaft size is 5mm (.0157in) 5mm is roughly 0.196 inches. The drawing has it right.

[Aren Siekmeier]

Will it be possible to purchase the Versaplanetary encoder housing separately from the encoder? We'll be getting some encoders to play with in other applications as well, wondering if we can later assemble them into VP housings without buying the whole kit.

(Looks like from the manuals the encoder is not modified to fit the VP, correct me if I'm wrong.)

[R.C.]

Originally Posted by jman4747

I think there is a typo on the 775pro page. It says the shaft size is 5mm (.0157in) 5mm is roughly 0.196 inches. The drawing has it right.

That is correct, the shaft is 5mm @ .196 ish and not 4mm @ .157.

[Grant Cox]

Originally Posted by jman4747

I think there is a typo on the 775pro page. It says the shaft size is 5mm (.0157in) 5mm is roughly 0.196 inches. The drawing has it right.

Oops! This has been fixed, thanks for pointing it out.

[JVN]

Originally Posted by Michael Hill

I love all the motor data.

I also would REALLY like to see the data on the BB RS-550. After using them in our elevator last year, I feel like the published specs weren't quite...right.

This is a common request, but unfortunately when we went to purchase BB550's for testing, they were unavailable.

[Jay O'Donnell]

Originally Posted by JVN

This is a common request, but unfortunately when we went to purchase BB550's for testing, they were unavailable.

I'm sure you could find some unused ones from teams that are willing to part with them.

[JVN]

Originally Posted by Jay O'Donnell

I'm sure you could find some unused ones from teams that are willing to part with them.

Sure thing, any team with (8) or more unused BB550 motors should email prosupport@vex.com

We're happy to test them.

[Nuttyman54]

Great stuff as usual!

Any chance the brackets from the VersaDrop kit will be available for individual purchase? Specifically the piston mount bracket would be super handy for general piston mounting, but I'm not going to buy a kit if I'm only using that.

[IndySam]

Originally Posted by Nuttyman54

Great stuff as usual!

Any chance the brackets from the VersaDrop kit will be available for individual purchase? Specifically the piston mount bracket would be super handy for general piston mounting, but I'm not going to buy a kit if I'm only using that.

Notice that they called it a "cylinder mount?" Because it is a cylinder, not a piston.

Be proud that you are the first victim of my annual "It's a cylinder, not a piston" campaign.