Robo Challenge - Predator

[james...venom]

Re: Robo Challenge - Predator

The motor is as short as I can make it however looking at the drawings its about 10mm too high to fit in. The shoulder mount supports and the tail servo will now be cut out and modified to fit the arm mech bit of a set back but should be ok once its done. I just hope the drill motor is enough to self right otherwise the toys may come out the pram.

[Mouldy]

Re: Robo Challenge - Predator

Gearbox looks sweet James, What ratio did you go for in the end? Isnt it worth putting an astroflight on there?

[james...venom]

Re: Robo Challenge - Predator

Ye i was tempted but with how expensive they are and easily it is to burn them out under high prolonged stress I thought it better to get with something cheap. Its the gear out of a drill gearbox so the same ratio as before.

[PJ-27]

Re: Robo Challenge - Predator

Wouldn't a couple of big servos cut it?

Sorry to say it James, but when you put this into full combat, if it breaks, you're going to cry so hard. :P

[webby]

Re: Robo Challenge - Predator

you could use 5th scale metal gear servos?
looks great

[grant_ploughbot]

Re: Robo Challenge - Predator

Servo's don't have enough speed and torque, needs a lot!

[webby]

Re: Robo Challenge - Predator

yeh i suppose

[james...venom]

Re: Robo Challenge - Predator

Started to machine the arm mech mount until the mills shaft bearing locked up! Nice....

Had to clock it up in the manual mill and finish it by hand. This is how far I had got.

[james...venom]

Re: Robo Challenge - Predator

Machined the inside section now im band sawing the excess so I can machine the bearing pockets in the top and bottom

[james...venom]

Re: Robo Challenge - Predator

Back in the mill and Ive just pocketed out the bearing pockets. Our digital read out has a nice function where you tell it the diameter of the pocket and the tool and it calculates each of the individual xy coordinates. very handy!

[james...venom]

Re: Robo Challenge - Predator

Machining some of the profiles

[james...venom]

Re: Robo Challenge - Predator

Clocked up again to drill out the pivot holes

[james...venom]

Re: Robo Challenge - Predator

Machined all the back off to release the part from the block and now im just finishing some of the profiles.

[james...venom]

Re: Robo Challenge - Predator

Voila! arm mount mech complete finally. I just need to finish off the ball screw and drive motor then its ready to test the arms

[webby]

Re: Robo Challenge - Predator

looks good!