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Had this little idea a few days back.
Attachment 3766
This would be a custom pulley attached to the weapon shaft (The hole is square for a reason)
If I wanted to change the ratio I could slide the pulley off the motor shaft, undo the 2 bolts holding this on, swap it for another then slide the other pulley back onto the motor shaft with the belt over it. Saves me totally dismantling the robot.
I don't think I will use it but its a interesting idea.
Convenient way to swap pulleys but you'd have to change the belt too wouldn't you? In which case you'd have to dismantle it some anyway. Unless you have an adjustable tensioner.
I wouldn't need to change the belt cos I also change the pulley on the motor as well. So I would go from say 12T to 14T then maybe down to 10T. All the slack is taken out on the large pulley
Thanks to the Laser cutter at my university my massive mess up with the wheels has been resolved.
Attachment 3767
It takes about 5 mins per wheel but I was able to re-cut each hole. I set them up to sit in a piece of 9mm MDF board with a series of 73mm holes in. I put each wheel in a hole then cut a 19mm hexagon into each wheel. The cut was 0.3mm larger than the input so it came out at 19.06mm per hole which is a very tight fit on the 19.5mm hex shaft
Attachment 3768
Afterwards I am left with some perfectly straight wheels and these random little bits of plastic.
Attachment 3769
A note to anyone buying from Banebots...
The parts I ordered were:
-4x RS775 Motors
-4x 16:1 7nn Gearbox's
-8x 73mm Wheels
-8x 1/2 inch Hubs, 1 Wide
Cost £303 which is no problem.
The import tax on that (Which I got the letter for this morning) is £61.65. That's an additional 20%.
I know there isn't anything we can do about it but I just thought I would let people know.
That's standard for all imports over a certain value. Welcome to the uk
yep, hate to think the tax man might go without.....
Sometimes you get lucky when importing things. When ever I get upset about how things are so much cheaper in the states I realise that Brazil is far worse then us when I visit.
55% additional Tax
Well the parts are finally here and I can say one thing... We are never going to run out of wheels!
Attachment 3810
I also didn't quite appreciate just how big a motor I was using for my drive!
Attachment 3811 Attachment 3812
Conker 3 is going to SHIFT!
Pfft you think your motors are big? I laugh at your puny "big motors"
Jokes aside, Looking really nice so far. Why So many wheels? Spares?