4wd wide base: Looking for videos, experience, comments and thoughts

[Mk.32]

Our team on kick off day built the 4 wheel wide version of the kit frame.
Photo/Video here: http://www.youtube.com/watch?v=AnIGj...ature=youtu.be
In a short test of driving it around, it seemed pretty nimble and quick.
Might gear it lower however.
We did have it go over a 2x4 seemed to be okay.

[viperred396]

Originally Posted by Mk.32

We did have it go over a 2x4 seemed to be okay.

Vid?

[Rabajaka]

Another advantage to going with 4 wide is that the 6 wdr with the middle wheel being lower then the other ones making the bot rocking back and forth when the bot is shooting

[Nick LaPosta]

That would depend on where your weight is centered at. The ball isnt going to create much rock if any if your weight is centered low and to the front.

Also on the four wheel drive, my team had a four wheel drive in 2010 and we had trouble steering. You want to try to keep your wheels as close together as possible while still being stable. Otherwise you end up dragging the wheels across the floor making it difficult to turn. That was with the standard rubber 6 in" wheels.

[SenorZ]

Originally Posted by Mk.32

We did have it go over a 2x4 seemed to be okay.

But the barrier is 4x6... do you guys plan on using bridges exclusively? We're looking to do a similar setup but with the 8'' wheels.

[KrazyCarl92]

Our 2010 robot used a 4 wheel swerve drive with 2 modes. One mode is strictly translating in a crab drive mode, but the other is with the wheels straight operating as a wide base 4WD. It uses 6" FIRST wheels. Here's a video of it playing breakaway:

http://www.youtube.com/watch?v=LvHBv...yer_embedded#!

When the robot is moving sideways that won't give you a good idea about the maneuverability of what you are thinking of. But when the robot is moving strictly forward/backward and turning, that is exactly the type of maneuverability you are interested in seeing! It may be tough looking at the video for the first time to differentiate between when its in swerve vs. tank mode, but it's there!