Drill motors

[dgr]

Hi guys. Im starting a featherweight project and have a couple of questions.
Im finding it hard removing the chuck from a drill motor shaft, any tips on this?
Also looking to buy some drill motors with mounts, so if anyone sells, or is selling some, give us a post.
Cheers. Dave (yes, I know, another Dave who builds robots)

[dmac]

Drill motors

Good name Dave, have you taken the reverse thread screw out, if so, clamp a large allen key in the chuck and give it a sharp tap, usually works for me.

Dave Mac.

[john_frizell]

Drill motors

Note that, as Dave says above, the screw that holds the chuck on has a left hand thread. So you turn it as if you were tightening a normal screw to get it out. Once you have it out the chuck itself unscrews in the normal way. The allen key sounds like a good way of getting the chuck off - they are usually wound on pretty tight. Another approach is to put a big drill bit in the chuck and drill holes in a hard bit of scrap wood until it spins off.
The shaft that comes out of the drills gearbox, revealed when you get the chuck off, is 3/8 UNF. You can get 3/8 UNF nuts at automotive stores and people on this forum sell wheels with 3/8 UNF nuts embedded in them.

[james...venom]

Drill motors

We do!

We have drill motors, mounts and wheels to fit. send me an email if you like james@robochallenge.co.uk

Yes some times the chuck does get stuck on which is a pain. if you do clamp it in a vice or something just be carefull where you clamp it as they arent the strongest of componants

[dgr]

Drill motors

Thanks for the responses

[woody]

Drill motors

Just in case it isnt obvious ...You should remove the chuck from the motor whilst it is still assembled in the donor drill.

[dgr]

Drill motors

Lol, yes, this became obvious after much dismantling and re-mantling, thanks Woody.

[aero_storm]

Drill motors

After the last thread, I deduced that I wanted to use drill motors. After experimenting with woodys calculator, and deciding that I want to use 7mm blue wheels, I hit a problem. My little combat robot would be relying on speed and pushing power. With 750 rpm drill the top speed was 30 mph - and anyway the drill was £49.99 - and I need four! So, somehow I need a way to keep the wheels the same size, but I need a cheap drill (£20 or under) with an rpm of about 1000 per minuite (planning to overvolt it by 50% on Woodys instruction).

Im not just looking to you lot because I cant be bothered to look - I have done it to death on the internet, but I was wondering if there was something I am missing, or a website that you have used before in building.

Thanks,

Alex R

(Message edited by aero_storm on October 11, 200

[teamhunt]

Drill motors

There doing good drills that hav good motors in our Wilkinson if your interested?
We used them on Chicken Supreame and Hunter D1, and they worked like a charm!

[aero_storm]

Drill motors

Ok, Have you got a link?
Or a website URL?
What are their specs and how many have you got.

Thanks and sorry about the bombardment of questions,

Alex

[teamhunt]

Drill motors

I have a website, but its to with a robot series that I do.
http://www.wildrobots.co.ukwww.wildrobots.co.uk
We dont have that many, infact just one (That doesnt work!)
We can always get some more, as i think i might use them for future FWs
Not sure of specs, ill get them when i go down the garage again.

[aero_storm]

Drill motors

Thanks,

Alex

[widow_twanky]

Drill motors

Just out of interest Alex, do you not think you may be trying a bit too hard to make it go fast. 30mph is very very fast.

Cylon is fast in comparison to most other robots in the arena and that runs at about 10mph. Boom is again quite fast and runs at about 9mph. The shape and location of the wheels makes a big difference but both are relatively difficult to control, so at 30mph I think you may find something which you cant control in a confined space like the arena.

Andy

[aero_storm]

Drill motors

Not 30 mph mate. 15 - 20 more like. Where did you get 30 from?

Thanks,

Alex

[teamhunt]

Drill motors

Hunter is quite fast, and a bit uncontrollable (God knows how many times weve hit a curb in testing!)
But still it was made to not be very controllable so that it just hits anything infrotn of it, but still it can evoid hazards quite well.
Its your choice (Id say Hunter goes about 15mph)