360 - mini hypnodisc

[tweedermeister]

Re: 360 - mini hypnodisc

I both love that bot and am scared of it at the same time

[calumco]

Re: 360 - mini hypnodisc

looking good davindra and the robots not bad either, is that my hardox?

[Mouldy]

Re: 360 - mini hypnodisc

Yeah, i think you should just give me some more?

[RobotExtreme]

Re: 360 - mini hypnodisc

mr_turbulence, you made a great work, 720 looks great!

Which is the diameter of the shaft of the drum? what is the type of bearings that you using?



I'm anxious to can fight against 720 and Drumroll at same time =P

[PJ-27]

Re: 360 - mini hypnodisc

A drum-off! Will be awesome.

[Mouldy]

Re: 360 - mini hypnodisc

Thanks Guilherme, just finnished it today actually;

armour TIG welded;



And painted;



The shaft is 20mm solid silver steel, which is then key'd into each bulkhead 15mm deep (into 20mm bulkheads, and then bolted up with an M10 bolt either side... so, nice and strong hopefully.

these are the bearings im using; http://uk.rs-online.com/web/p/roller-bearings/0506208/

one either side, facing inwards... to try take horizontal impacts.

[Eventorizon]

Re: 360 - mini hypnodisc

Can't wait to put Binky up against 720! Insane drum spinner against insane disc spinner!

Have you had a chance to test drive it yet? How fast can you have the drum spinning and still be able to drive it without it gyro-dancing?

A drum-off! Will be awesome.

Yes it would!

[PJ-27]

Re: 360 - mini hypnodisc

Looking at your build diary Dave always feels me with a bizarre but equal measured emotion of amazement and depression, since I know there's a chance I'll have to fight it!

[Mouldy]

Re: 360 - mini hypnodisc

Thanks guys.

Not sure how well it'd do against other robots... it was desighned to fight hdpe/thin metal robots and nst mostly Would be good anyhow..

Any no, not had chance to test it...need to sort out radio reception problems before i do that... might have to mount a satelite reciever behind one of the wheels... turns out 2.4ghz has trouble getting through 20mm alumec :blush:

Any updates on your new drum robot or have you decided against it?

[Eventorizon]

Re: 360 - mini hypnodisc

The drumbot idea got dropped after we bought the bulkheads and disc off Gary.

Binky is based on those rather than us trying to build a machine from scratch that could take the forces involved.

Might look at it further down the line but thats the same with the other dozen ideas I have got.

[PJ-27]

Re: 360 - mini hypnodisc

I'd try simply increasing the length of the aerial first.

2.4Ghz wave is up to 120mm long, so make the aerial longer and isolate from any metal, some thin plastic would help.

[RogueTwoRobots]

Re: 360 - mini hypnodisc

That's looking great Dave, as usual

I love how meaty those welds are, armour looks absolutely solid. I'm also impressed with how tight things are at the front of the robot. On Drumroll there is quite a lot of air and gaps around the drum/bulkheads that a horizontal nasty spinny thing could easily grab onto and rip apart, but you've managed to keep everything butted up against each other so much that it shouldn't be an issue.

Can't wait to meet it in the arena.

[Mouldy]

Re: 360 - mini hypnodisc

Thanks Jamie... was part of the design to get it all as small and beefy as possible.

just done an aggressive spin up test on a full lipo;



337.9amps, 13517rpm.... this is gona end in a fire .... just goes to show how much more current you can pull through an automotive fuse then expected... bearing in mind theres a 100a fuse in there.

also its 390g over weight.... so ill probably change the baseplate for titanium, mill some pockets etc etc at some point.

[Gabe01]

Re: 360 - mini hypnodisc

this is going to be a beast, do some nice milling patternwise. it will look stunning

[Ellis]

Re: 360 - mini hypnodisc

337 amps?

Man now that's just silly.