Bruiser II

[PJ-27]

Re: Bruiser II

They're called thrust bearings!!

Finally found what I was on about, I knew what problem I was trying to solve just didn't know what to use.

Thrust bearings will stop the wheels rubbing against the sides and reduce friction.

[Bodge Job]

Re: Bruiser II

Yeah at the moment its just spaced with washers, that may be a future change, but atm the main problem is weight. its going to be hugely over weight. each wheel pod is going to weigh more than 4.5 kilos! and so we only have 4 kilos for batteries electronics, a weapon and a frame, so we need to loose like a kilo and a half from each wheel pod, to get it all in! I think it is quiet easily achievable, just a lot of holes, and were replacing the wheels as including the sprocket, they weigh over a kilo each!

[jonny]

Re: Bruiser II

drill'em out

[PJ-27]

Re: Bruiser II

Wow, they are some weighty sprockets!

[Bodge Job]

Re: Bruiser II

More work today, cut some of the weapon mounts, and mounted all the chains on one side, and just did the motor mount on the others. After the draw for the uk champs, and discovering that bruiser 2's first fight was with LS4 and trevor wright spinner (any idea what's its like) and deciding the the 4 screws holding my robot together, wouldn't be enough, so we've got I nice peice of 4mm steel, for our anti nasty spiny thingy weapon... Which evolves a wedge, and some rubber tire....

[Bodge Job]

Re: Bruiser II

Just about finished the second wheel pod, only framework, and weapon left to make, we have some time next week end, but that's about the last time we have before the champs, hope we can finish it!

[Bodge Job]

Re: Bruiser II

Reienforced 3mm steel wedge made, and frame made, we will screw it together tomorrow. http://s1111.photobucket.com/albums/h46 ... napbucket/

And we still haven't made the spinning weapon, or bolted the weapon together, so we are going to try and do that tomorrow, but tomorrow is practically our last day of building, which is quiet annoying, but hopefully we can do little jobs here and there, during the week before the event, or assemble it there
And we are still looking for a better hub, and were switching to a plane steel bar, as attaching extra teeth will be time consuming and take up 5x the space. Any suggestions for the blade material though? As mild steel would probably be to soft...

[Bodge Job]

Re: Bruiser II

Middle pod done, that contains the electronics. Mounting the wedge after lunch, and we will do more work on the spinner frame later. http://s1111.photobucket.com/albums/h46 ... napbucket/

[Ellis]

Re: Bruiser II

Really looking forward to seeing Bruiser II in person. It's looking really good. I have been hatching similar ideas for my second machine!

[Bodge Job]

Re: Bruiser II

Yeh, to be honest, I think at its current stage (with the wedge) it is worse than the old bruiser, it's weaker armered, weaker structurally and weaker drive, with a weaker weapon, lol, it's a bit of a fail, I dont think we can finish the spinner before the event, so Its just going to be a useless rambot... Should be able to get a drive video up tonight, or tomorrow, and show you what I mean...

[Ellis]

Re: Bruiser II

Surely the motors give more power than 4 drills? I'd be surprised if they end up being worse.

Look forward to the drive video.

[mattsdragons]

Re: Bruiser II

What motors are you using? Should have tons if grip with 8wd

[Bodge Job]

Re: Bruiser II

I'm using a speed 900 replica, but it's on a 5:1 reduction (maximum reduction with chain we could get, and the replicas arnt that powerful. Also the wheels arnt grippy, so we may stick some rubber on it, to improve the grip.

[jonny]

Re: Bruiser II

what size wheels?

[Bodge Job]

Re: Bruiser II

5 inch, it's huge, the hole robots to big, its like 40x50cm, every thing weighs to much. If we're going to build the spinner, I'm going to have to build it after school using very basic tools, I don't have access to and descent stuff till after the hols (which is to late)