No toy new robot from mewbe

[blazerbotics]

Re: No toy new robot from mewbe

What mixer are you using for the drive? It looks to me that its slower forwards than when turning, which happens with some mixers, some will knock off 40% off the forwards/backwards.

[adz600]

Re: No toy new robot from mewbe

mixing using my dx6i handset no mixer within robot, but i agree does seem slow
might try my 2x10 sabertooth to speed check

[blazerbotics]

Re: No toy new robot from mewbe

turn it off of the TX, you will find it goes quicker.

[adz600]

Re: No toy new robot from mewbe

hi all just though i would list some of what was used and some probs i had
new photos of insides also uploaded

http://s1323.beta.photobucket.com/user/ ... rary/robot

3 version this final version has plastic 10mm base not 3mm stainless, large cim 21v axe motors have been replaced with large 750 mfa motors( 41w quoted but are loads bigger and better built then drill motors must be quoted at no load ? )

12v drill motor drive
100mm robo whells
4.1 mfa axe motors
30 amp electronize axe controller
2 x cheap ebay drive contoller ( replacing with spare sabertooth 2x10
3700 12v batt
ar500 spektrum reciever
carbide tipped axe from joy minning cutter
15mm side armour
3mm stainless wheel armour and axe support

axe assy alone weights nearly 4kg (no motors or frame included)

weight was the biggest problem all the way whilst building, some test as shown look good, robot does self right

any one near by bingham notts for a bash around to try out its electronics in pushing etc

please comment thanks adam

[adz600]

No toy still lives, axe and mounting all fully repaired after drumroll2 and ls4 had there way, all good fun just about to start running tests with the axe motor assembly.currently run at 12v but ratde to 18v so three tests
12v power ,speed and axe time
14.8v " "
22.2v ""

hoping to keep same axe assembly and motors just use more volts

[james...venom]

Well done on your build! Looked great at the champs and stood up to some serious hits. Looking forward to seeing it next year!

[adz600]

Thanks james , had great fun cant wait to play again

[adz600]

Just been doing some video analysis for a start point on the axe speed and therefore power, 13 frames at 30fps from start to ground, thats 0.43 second start point will video 14.8v and 22.2v and do the same fps test.
simple and basic but is accurate to 1-30th second not bad

[adz600]

Just in the process of basic repairs ready for sunday testing, also designing my team logo,

TEAM NO TOY

OR

NO TOY ROBOTICS

and images etc some are looking quite cool tryed to upload but used powerpoint and file is not accepted

[adz600]

No toy axe test at 22.2v went well, had multipe test surfaces and may hits. axe assembly looked great with no jams or damage just motors building up alot of heat after 6/7 mins of testing should be ok. axe time has fallen from 0.43 to below 0.3 thats 31% decrease in time to impact. looks and sounds lots more damaging. in slowmo no toy picks up at least 100m of the floor when firing the axe its wasting energy but shows the forces involved will require a body redesign to harness that power.

still might try those speed 900s

[RogueTwoRobots]

100m, that's quite a distance

My axe tests have mostly been with the axe unit clamped to my workbench, but I noticed a similar thing when I ran one test without it clamped. Common occurrence with axe weapons. Not sure how well it would work, but maybe having magnets in the base of the machine will help keep it on the deck and reduce the amount of wasted energy, although that would only work for Robo challenge events.

Sounds like a nice improvement in any case though; you able to upload a video of the 22.2V tests?

[grant_ploughbot]

Sounds really good! What's the length and weight of the axe head?
Little hitter get around the jumping when hitting other robots by having a slight ramp at the front that gets under the other robot. That keeps the front on the floor and so doesn't waste so much power! Might be worth looking I to doing something similar.

[Dan-27]

I don't know if it would work but I've just bought some more of these electromagnets.

http://www.ebay.co.uk/itm/2711813511...84.m1439.l2649

They're the ones to hold fire doors open (rather than ones to keep doors closed which have roughly 1/2 the pull) they'll pull 40kg's at 24V drawing minimal amps (2-3) I was wondering if you could wire it up with the weapon motor such that as soon as you fire the axe the magnet engages sticking the front edge to the floor, then releasing as soon as the axe was down?

Just an idea. Splinter was pants this year but I was really please with how the electromagnets worked, with a little tweaking I think they could be used effectively in a number of machines.

The magnet comes out of the housing and is 50mm dia, about 30mm deep has a large threaded hole in the back (M10 - 12ish) weighs very little and requires nothing more complicated than a 24V supply to generate the magnetism.

[Bacon Wizard]

Surprisingly powerful beasties these.. I run a small kitchen in a care-home part time, alongside my consultancy. So I experience them most days. Can't budge the door.

[adz600]

Quick poorly edited video of the 22.2v axe test,
http://s1323.photobucket.com/user/adz600/slideshow/