pic: Robot suspension

[joeweber]

The weight of the drive unit with the bane bot gear boxes was 30 lbs. The other side we did not check. If we used Andy Mark wheels and did a direct drive to the wheels (no helical gears) and placed some hole in the frame we should be able to get the weight down less than 25 lbs. with a total of 50 lbs for both drive units. The only other frame we would need is for the arm attachment.

More Pictures http://www.team1322.org/ideas.htm

[joeweber]

Just completed a video

http://www.youtube.com/watch?v=xby0S...e=channel_page

[GBIT]

How well does it slide from left to right? Does the omni-wheel cause enough drag to not justify the mechanum wheels? Are you even using it as a left to right slide robt or are those just wheels that you had?


Thanks so much

[s_forbes]

Cool video! That's a very clever drivetrain concept, and I'm glad to see you got it working. It looks like a really fun project, although it may be difficult to implement for a FIRST robot (mostly because of the mechanism and bumper mounting... but I'm sure you guys could think of something ). I'd love to see it used in competition.

Can it go up the ramp fully sideways, or does it start to slip?

[joeweber]

We have been driving it quit a bit and it goes sideways and angle wise great. If we do use it for competition we would use segmented bumper for each of the moving drives. We originally were going to attach them to the rods that supported the main part of the robot but the stationary bumpers might hit the ramp as it goes up and over.

[MaiPrettyPwny]

Could you tell me if I'm looking at this right?

It looks like, to me, that the two wheel assemblies are only connected to the central frame in three points. One on either side of the frame near the rear wheels (the white tube, yes?), and the other on the parallelogram in the front.

If this is true, when that parallelogram "flexes," doesn't it pull the two front wheels in towards each other?

[joeweber]

Originally Posted by MaiPrettyPwny

Could you tell me if I'm looking at this right?

It looks like, to me, that the two wheel assemblies are only connected to the central frame in three points. One on either side of the frame near the rear wheels (the white tube, yes?), and the other on the parallelogram in the front.

If this is true, when that parallelogram "flexes," doesn't it pull the two front wheels in towards each other?

Yes you are correct. For the test robot it did bring the front wheels closer. With this years robot we are not useing the three points, we will use four but they will be above the robot drives.