Robo Challenge - Predator

[psycho_fling]

Re: Robo Challenge - Predator

any more progress James?

[psycho_fling]

Re: Robo Challenge - Predator

echo echo echo echo......

[james...venom]

Re: Robo Challenge - Predator

Lol hi Alex sorry for the lack of updates, predator has taken a back seat over summer/ autum due to work loads however I'm going to continue now and get it mostly running for our open day which will be announced for early December

[psycho_fling]

Re: Robo Challenge - Predator

np thoughts so look forward to seeing it

[RogueTwoRobots]

Re: Robo Challenge - Predator

Hey Alex, I can't seem to see your build diary for all the tumbleweed

[psycho_fling]

Re: Robo Challenge - Predator

its coming soon dont worry pedro

[james...venom]

Re: Robo Challenge - Predator

So work hath begun... again.... to get Predator running, it will definitely be at our next competition.

Here the arm mech is complete. A 12v drill running a ball screw which the arms attach to. Its as compact as I could make it.

[james...venom]

Re: Robo Challenge - Predator

However it still didnt fit in the robot so the shoulder brace has been cut out. The back panel and tube will be re shaped to fit around the arm mech motor.

[james...venom]

Re: Robo Challenge - Predator

The motor just pops out the top, will require a top panel to flex out of the way when the assembly tilts back

[maddox10]

Re: Robo Challenge - Predator

The motor just pops out the top, will require a top panel to flex out of the way when the assembly tilts back

Maybe shortening the motor, taking out the fan and making the body shorter. Not easy, but doable.

[Bodge Job]

Re: Robo Challenge - Predator

Or just buy a shorter motor? The ones used in rc cars are often shorter.

[Mouldy]

Re: Robo Challenge - Predator

Looks sweet james. Get a test video

[james...venom]

Re: Robo Challenge - Predator

All in and done, Arms operate really nice except I need some limit switches otherwise it hits the end and bends the mount doh! Will get a vid online

[james...venom]

Re: Robo Challenge - Predator

Lots of work now done on Predator. Here is the single tooth ring which has been beautifully machined by Kenny at ALK Engineering. All we need to do is machine the profile out of the disc to key the tooth in.

[james...venom]

Re: Robo Challenge - Predator

Voila! The Tooth is now keyed into the disc which will hopefully take all the stresses rather than shearing the bolt. the disc amazingly weighs 3.2kg and spins approximately 4000 rpm. Im really pleased as with a single tooth the machine could be competitive.

Predator is now fully functioning, just needs tweaks and armour. The first full test was at our Robo Challenge Open Day. He was due to go in with Jarvis' robot for a first battle to give it a good shake down.

Before the battle we decided to test all the functions and give it a run around. Unfortunately 2 problems occurred. First of all the receiver for the arms/head had a problem where by the centre kept moving to the point where we couldnt trim it out. This meant the head kept trying to tilt back and the arms were forcing themselves down.

The second problem was burning out the motor and speedo to the head. It spun up fine to begin with but a reasonable hit on the wall seemed to kill it and then it went up in smoke. We stripped it all down and it appears that there were no location pins in place to hold the windings to the front case. This meant it was free to rotate and when it hit the wall the motor twisted and shorted the wires out. Really disappointing and expensive.

New motors and speedos on order now so shouldnt be long before its fully running again. Just the armour to do now. The best thing is the robot only weighs 10.2kg!