mattbrailsford
Hey Guys,
I'm just starting off a new project after I got an Omnibot 2k off ebay. I'll be creating a project page for it soon, but I thought I'd share a little bit of it now.
When I dismantled the bot, and gave it a clean, I noticed that the wheels were pretty degraded. I know josh can create new ones, but being new to this, I really wanted to learn something new, so decided to make my own mould.
What I did then, was to carefully remove one of the existing tyres and then used a sealer to seal all the cracks.
I then setup a box for it, and also attached a kind of funnel to help pore in the ruber (turns out it wasn't that great, but you've gotta try these things
)
I then cast the hole thing in silicone
Finally, I then cast the tire and tada
I think it worked pretty well. The only bad bit is that I don't think I mixed the rubber to cast the tire very well as it's a little sticky. But hey, not bad for my first attempt
Hehe, I doubt it, your skills are mad. I'm having fun trying though
Although, I could do with picking your brain about filling holes in my omnimc project thread
Yay! The new rubber has arrived. Time for some experimenting
Oh hell yea! Utter perfection
0% sticky, and the new pigment I'm using as soooooo much better. Both the A60 and A70 work really well, but I think the A70 might be the best option. It's quite stiff, like the original tires, but still pretty easy to get over on to the hub. I'm hoping the stiffness also ads to the durability, and would make it harder to come off during action.
All in all, I'm really chuffed. I'm off now to go make a full set
Hmm, actually, I've just done a slide test on my desk and it would seem the A60's offer a bit more traction. I may be inclined to declare those the winner.
Time for some traction testing
Awesome. Will you stick to green, though? If you have the chance to test the wheel on the base, let it do turns instead of just going back and forth. I learnt that doing turns puts much more stress onto the rubber treads than anything else. Keep in mind that the robot weight adds to the traction.
Hey Mike, I'd be able to do any number other colours, I just bought green as a test
Thanks for the tips on best way to test. I'll look at hooking up the ez board in the next couple of days, and give it a try.
FYI, i should be able to do Black, Blue, Green, Yellow, Red or White, and probably grey by mixing black and white