How many drive motors did you use (per side) this year?

[Billfred]

Alright, so 1293 is getting the ball rolling on the prototypes. And I want to know from other teams who did skid-steer robots last year--how many motors did you use on a side on your robot in 2004?

And which ones?

Thanks!

[tkwetzel]

Team 116 used a drill motor and a chiphua motor on each side. Two motors per gearbox. One gearbox per side. Four drive motors total.

[Cory]

I want to know who voted for 4, and I want to see pictures of said drivetrain

We used Drills+Chips in ours, until it had massive issues and we took the drills out.

[Bcahn836]

we used two chips for drive motors, we used two drill motors to raise and lower and open and close our arms

[Peter Matteson]

We used the drills and chips in a modified version of the Teknocats gearbox.

We had high speed and extremly high torque.

[Steve W]

Team 188 used 2 Chips, 2 Drill and 2 Fisher Price. We used 1 of each on the gearbox with 1 gearbox per side. Specs have been made available.

[Specialagentjim]

One drill and One atwood (chiphua) per gearbox. Two gearboxes, one per side.

UCF we ran on only drills (7 lbs overweight, atwoods weighed 7lbs, so they were the first to go)

[Jack Jones]

Doh! - should have read it more carefully - answered the title instead of the question. Was this some kind of a trap?

So, change my vote to two/side. FP in front & Bosch in back, each mated to it's own DeWalt three speed transmission.

[sburro]

Originally Posted by Billfred

Alright, so 1293 is getting the ball rolling on the prototypes. And I want to know from other teams who did skid-steer robots last year--how many motors did you use on a side on your robot in 2004?

And which ones?

Thanks!

there was one team at Manchester that used 4 motors per side. Due to the fact that I am in school at the moment, I can not post the picture I took. I will post as soon as I get home

[sburro]

ok here is that pic. I was wrong, they used three. I will have to give credit to team 229. It is their gearbox.

[JVN]

Originally Posted by sburro

ok here is that pic. I was wrong, they used three. I will have to give credit to team 229. It is their gearbox.

That was just our fall prototype.
We designed a prototype drive with 6 motors, because we figured it was much easier to "remove" motors from a design than design in more motors. This gave us a nice base design to build off of during the 6 weeks.

Our actual competition robot used only 1 Chiaphua per side. It was originally designed for 1 Chip and 1 FP, but after testing it was decided the FP motors weren't worth it.

2 chips, 3 competitions, no problems.

John

[sburro]

Originally Posted by JVN

That was just our fall prototype.
We designed a prototype drive with 6 motors, because we figured it was much easier to "remove" motors from a design than design in more motors. This gave us a nice base design to build off of during the 6 weeks.

Our actual competition robot used only 1 Chiaphua per side. It was originally designed for 1 Chip and 1 FP, but after testing it was decided the FP motors weren't worth it.

2 chips, 3 competitions, no problems.

John

It was still cool to look at.
how many times did you end up switching gears durring a compition?

[JVN]

Originally Posted by sburro

It was still cool to look at.
how many times did you end up switching gears durring a compition?

Thanks.
In retrospect I think it's pretty ugly, but it was state of the art for about a month. Maybe I just move onto new designs too quickly...


We shifted a decent amount each match.
At our first regional, our driver "forgot to shift" a lot. By the end he could handle it well, and transitioned frequently depending on the situation.

Shifting can be very handy, but of course... this is a well discussed subject.
Feel free to search for old threads which discuss the pros/cons of a shifter.

John

[Tristan Lall]

Here's a link to the write-up on 188's gearboxes. 3 motors per side, 2 ratios, chain-driven skid steering. (This is the 3^rd year in a row in which 188 has used six drive motors.)

[[527]phil]

we used one drill motor on each side with helical gearboxes that we will NEVER!! use again, lol, we hated them, too many problems. we also used a globe motor to raise our arm.