Four wheel drive question

[Mark Pettit]

Originally Posted by misterfoo

If you want to be very simple, you could order a double chain sprocket from Mcmaster. We also converted our wheels to use 5/8 shaft with a similar sprocket and a keyway.

Please be careful of the advice you are presenting.
The sprockets that came in the kit are custom bored to fit on the kit-tranny shaft. You can't purchase stock sprockets and expect them to fit out of the box. They need to be bored out or at least pressed onto the shaft. This is the 4th time I've had to remind people of this in as many threads, such as this one.

[robolemur1236]

why cant you make the robot 4 wheel drive with just ordering two more sprockets? add those to the ends of the drive shaft, drop another chain, presto! four wheel drive

[JVN]

Refer to attached.
Here are 3 configurations of chain/wheels I sketched up in Paint that may be useful.
Two are 4WD, using different sprocket/chain combos.
One is 6WD.

Just some food for thought.
John


Edit:
Please note, these are just some ideas, there are TONS of ways to reconfigure a drivetrain, and the KOP chassis can be used for quite a few. Every team must decide what seems best.
/Edit