[chbot] Micromouse wheels

[Andrew Errington]

When I was building my electric bike I called around all the metal
suppliers in Chch and asked about buying small pieces of random cutoffs. 
I don't recall where I ended up, but the guy I spoke to was friendly and
helpful on the phone, so you can gauge what reaction you're going to get
in person.  I am sure that it was somewhere near Jade Stadium.

As for building the wheels, my students in Japan would make an aluminium
hub on a lathe, and then sit it in the centre of a cylindrical mould (the
mould had a pin in the centre to locate the hub accurately).  They would
fill the space between the hub and the edge of the cylinder with liquid
silicone, which would set and form the tyre.  These were for the non-LEGO
robot sumo they were making.

HTH,

A

On Sun, February 15, 2009 10:50, Charles Manning wrote:
> Road sign?    Just kidding
>
>
> I've often bought metal from a scap metal dealer. Eg the one in Annex Rd.
>
>
> On Feb 13, 2009 11:02 PM, "Richard Jones" <rjtp at ihug.co.nz> wrote:
>
>
> I'm wondering how to get hold of some wheels to attach to stepper motors
> to construct a micromouse. The stepper motors are about 42mm square and 32
> mm deep. So I'm thinking that 50mm dia wheels and with rubber or plastic
> tyres would be about right. I have access to a lathe and could turn up
> some out of aluminium. Anyone know where I could get hold of suitable
> aluminium rod or plate? I've been looking at the Nalco site and they have
> 50mm dia rod
> which weighs 5.3kg/m and as their minimum cut length is 1m its probably
> going to be pricey. Anyone have any suggestions for alternatives?
>
> Thanks
>
>
> Richard
>
>
>
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