paper: JVN's Mechanical Design Calculator 2016
 

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JVN's Mechanical Design Calculator 2016 by JVN

This new version published for 2016 includes some small improvements.
Older versions still available:
http://www.chiefdelphi.com/media/papers/2755
http://www.chiefdelphi.com/media/papers/2059
http://www.chiefdelphi.com/media/papers/1469

Everything is iterative. Email me if you have questions or find issues!

Re: paper: JVN's Mechanical Design Calculator 2016
 

Awesome to see a new version! Can't wait to play with it.

Re: paper: JVN's Mechanical Design Calculator 2016
 

The unique sheets for each WCP/VEXPRO gearbox should make things a lot more straightforward

Re: paper: JVN's Mechanical Design Calculator 2016
 

Thanks for keeping this up to date! I've learned a lot just from puzzling out your earlier versions. I'll definitely have to dig in this year on the calculations for the heteromotored gearboxes.

Re: paper: JVN's Mechanical Design Calculator 2016
 

Very nice and clear update. I like the changes, Thanks very much.

Re: paper: JVN's Mechanical Design Calculator 2016
 

I'm not sure I understand the Articulating Drive. What is it for exactly?

This is another awesome resource.

Re: paper: JVN's Mechanical Design Calculator 2016
 

Thanks! It's a great resource

Re: paper: JVN's Mechanical Design Calculator 2016
 

I would assume for butterfly, grasshopper, octocanum etc. Drivetrains with articulating wheels.

Re: paper: JVN's Mechanical Design Calculator 2016
 

My favoritest release this season so far!

Re: paper: JVN's Mechanical Design Calculator 2016
 

This is the key to having more success.

Re: paper: JVN's Mechanical Design Calculator 2016
 

Just posted an updated version:

• Added RS-550 Motor Data which will be up on motors.vex.com
• Changed the Motor selection lookup formula on the "non VEXpro" sheets to better allow for multiple iterations on the same sheet
• Added additional "All MiniCIM" motor selection options on VEXpro sheets
• Fixed some formatting that no one else would notice but was driving me nuts

Thanks to everyone who provided feedback. Enjoy and Good luck!

Re: paper: JVN's Mechanical Design Calculator 2016
 

Wow @ the 550 power. I now get why we had issues with our elevator last year. Thanks for testing the 550.

Re: paper: JVN's Mechanical Design Calculator 2016
 

Thanks for the effort you put into - and for sharing - this universally valueable tool

Re: paper: JVN's Mechanical Design Calculator 2016
 

This is the first time I have worked on a drive base, and so I wanted to make sure that I was doing everything correctly.

1. For the "Weight on Driven Wheels", that weight is distributed evenly among wheels, right? (say 25% if there are 4 wheels)
2. What is the "Speed Loss Constant"?

Thanks in advance!

Re: paper: JVN's Mechanical Design Calculator 2016
 

Speed loss constant accounts for the difference between actual speed and free speed of the motor. You can pretty much leave it at 81% for most FRC applications.

For "weight on driven wheels" if you have a 4WD robot with all wheels being driven then you would set that at 100%. If 2 of the wheels where non driven casters that would be 50% assuming a perfect weight distribution. Also for the purposes of this calculator omni and mecanum wheels are the same as traction wheels and wheel drop is ignored.