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

[geeza]

Re: new Roboteer asking for building tips and so on(First ro

In a featherweight if you angle your armour 4mm Hardox 400 will be more than enough.

[james...venom]

Re: new Roboteer asking for building tips and so on(First ro

Yes I agree 4mm hardox is plenty in a featherweight. Many of the parts you need to build a new machine can also be found on our website www.robochallenge.co.uk

[JammyONE]

Re: new Roboteer asking for building tips and so on(First ro

I like to ask about wheels and drive shafts, first i know that wheels have a plain or a nut. But what i like to ask is how do you attach wheels that have no plain or a nut? and how you attach the shaft to the chassis.

ok I'm not explaining this very well, basically what I'm asking for is the number of ways to assemble the drive.

[calumco]

Re: new Roboteer asking for building tips and so on(First ro

way i prefere to do it, have a fixed shaft, which can just be a bolt which is just fixed to a bulk head or something, and get a robochallenge wheel with bearings in the actual wheel hub then it just spins freely on the bolt and a pully or sprocket can be bolted to the wheel to give it drive

or have it, so bearings are mounted in a bulk head which would then allow the axle to spin instead of it being fixed with wheels etc being secured to the shaft

[JammyONE]

Re: new Roboteer asking for building tips and so on(First ro

Ok so how do you fit the bearing in the wheel hub? and while I'm at it how thick does the steel bar's for the chassis you recommend 16x16mm or something like 20X20mm.

[typhoon_driver]

Re: new Roboteer asking for building tips and so on(First ro

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]

Re: new Roboteer asking for building tips and so on(First ro

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

[jonny]

Re: new Roboteer asking for building tips and so on(First ro

just buy a regular led and put a resistor on it

[RogueTwoRobots]

Re: new Roboteer asking for building tips and so on(First ro

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]

Re: new Roboteer asking for building tips and so on(First ro

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]

Re: new Roboteer asking for building tips and so on(First ro

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)