Drive Speeds

[Youarefunny]

We were wondering how fast robots will be going this year.

We were thinking that you need speed for moving and possibly flinging over ramps. But you also might need power to go over the ramps and to push through tunnels.

So how fast are you guys going?

[MrForbes]

Right now we calculated the robot will go about 8 fps maximum, but we'd like to get it to around 12-15 fps, we think.

[sgreco]

My team is going with a one speed transmission, low speed, high torque.

[Jones571]

4-7fps in low and 18-21fps in high

[IndySam]

The size of the zones will limit what speed you can get up too, especially with a one speed gearbox. I think you should be thinking more about quickness than top speed.

[Bochek]

a calculated 24fps but an actual 16 to 18.

[JesseK]

I agree with Sam. It does you no good to spend 75% of your time accelerating to your top speed in a zone. Additionally, you really don't want to wind up like the little guy at 1:50 in this video. (I was at that horse show -- he apparently didn't get hurt from that)

We're aiming for 10-11fps single speed.

[Jones571]

That is why an automatic shifting 2 speed is great good acceleration and top speed

[camtunkpa]

We'll be doing about 3-4 fps in low gear and 10-11 fps in high.

[thefro526]

Our 2010 Machine will have identical gearing to our 2009 Machine.

In an ideal world with magical frictionless gears, sprockets, bearings, and chain, it's geared for about 13fps.

Seeing that we don't have access to any of the above magical components - a realistic top speed is about 10-11fps.

[gyaniv]

Our time is actually going for about 3meter/second (about 10feet/second) with a 16:1 gear...

We think it is more important to be able to maneuver around the field the best we can rather than speed... Though speed is always nice, but since each part of the field is about 17X27 feet it will be hard to accelerate, keeping in mind that acceleration going both ways. Which means takes time to build up speed and to slow down.

So basically a robot that is planned to move just vertically in the field will have 27feet tops to accelerate, not to mention that it also has to slow down otherwise the motors will burn down if you will turn them over and over just in a second. So even 15feet/second is a high speed since most likely you will never get to this speed during a match without burning the motors. Unless your robot goes in the tunnel and the driver is experienced enough to get in it without slowing down.

Also i don't know if you tried it but in my opinion if you will try to pass the bump with 15feet/second you will most likely tip over or your robot will get such a strike that will shake all the structure.

[MrForbes]

Originally Posted by gyaniv

Also i don't know if you tried it but in my opinion if you will try to pass the bump with 15feet/second you will most likely tip over or your robot will get such a strike that will shake all the structure.

Our plan is to stop the robot before traversing a bump. When the speed bump is almost as high as the robot, you need to slow down!

[gyaniv]

From what i have seen in your earlier post your robot is slower then ours, And our robot is still in a speed that is doesn't have to slow down that much to cross the bump.

By the way anyone thought of swapping the COAST and BRAKE on the jaguars during a match to allow almost instant stop in case of need?
Will be grateful if you will show a working method or have your thought in that subject.

About 10.5 FPS in the real world. Plenty of speed for racing around, yet low enough that power can still be put down to the ground.