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  #16   Spotlight this post!  
Unread 16-01-2016, 08:24
Joe Johnson's Avatar Unsung FIRST Hero
Joe Johnson Joe Johnson is offline
Engineer at Medrobotics
AKA: Dr. Joe
FRC #0088 (TJ2)
Team Role: Engineer
 
Join Date: May 2001
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Re: Pneumatic Wheels!

While it is safer to go with higher ratios (slower speeds), and teams will get themselves in trouble a lot faster by having too low of a ratio (i.e. too high of a top speed). It is not risk free to go with a slow robot.

There will be matches where you will need to go end to end to get boulders and weaken the tower over and over.

At 10fps it is going to take what will seem like forever to cycle.

Also, playing defense will require some speed at least. If The Poofs* fake left and then go right, you won't even be in the same county as them when they shoot if you can only go 10fps .

So... ...like almost all things in FIRST, the safest choice is not always the competitive one.

YMMV.

Dr. Joe J.

*to pick a team that is might be fast at random
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  #17   Spotlight this post!  
Unread 20-01-2016, 10:23
Roscoe Plowbots Roscoe Plowbots is offline
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FRC #3366
 
Join Date: Jan 2016
Location: Roscoe, Tx
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Roscoe Plowbots is an unknown quantity at this point
Re: Pneumatic Wheels!

Team 3366, Roscoe Plowbots here, we have tried this conversion kit; however, we could not find the order to assemble it. We finally discovered that it requires some self manufacturing. Here is what we did:

Main Hub: hub ground down 3/8'- pulley - wheel, - pulley spacer w/ pulley end cap - hex nut

Right Wheel: small white spacer - large white spacer - inset pulley spacer - pulley - wheel - 34mm custom spacer

Left Wheel: small white spacer - large white spacer - wheel - 34mm custom spacer.

This is for the pneumatic 8' square drive train with 6 wheels. We used a small pvc pipe for the 34 mm custom spacer. Note: on left wheel you do not use the inset pulley spacer, if you do your bolts will get caught on the frame of the robot.
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