new Roboteer asking for building tips and so on(First robot)

[typhoon_driver]

Either pop the wheel on a lathe and bore it out to the desired dimension and press the bearing in or pop it under a pillar drill and drill it slightly undersized, heat the bearing and press it in. The heat will cause the plastic to melt out the way.

Size wise for a featherweight axle 10mm diameter will do happily. Bearing in mind that drill gearbox shafts are around the 8mm mark.

[JammyONE]

I'm having trouble finding a 12v LED and I'm looking for a suitable axles, for my bosch 35w motors.

[jonny]

just buy a regular led and put a resistor on it

[RogueTwoRobots]

http://www.technobotsonline.com/opto-el ... ators.html

A range of 12V and 24V LEDs in red, green and yellow.

Axles for the Bosch 35s may have to be a custom job.

[psycho_fling]

i think although not 100% sure but

something like a 4mm allan key will fit nicely into those motors

not sure its 4mm though worth a try as its cheap

[blazerbotics]

I use 4mm keyway steel, fits perfectly. Available from any engineering shop, probably on ebay and RS.

See here for one way of doing it http://www.teamstorm.com/feathers/forcex.htm (at the bottom)