Cherubim

Another HW project I have been working on for some time, I Hope to make it into an electric lifter won't do much damage to other robots, but should be fun to drive something with a front and back; a top and bottom for a change as the Saint dose not really have that!

http://i569.photobucket.com/albums/s...g?t=1272885607

http://i569.photobucket.com/albums/s...g?t=1272885882

http://i569.photobucket.com/albums/s...g?t=1272885925

http://i569.photobucket.com/albums/s...g?t=1272885946

http://i569.photobucket.com/albums/s...g?t=1272885966

http://i569.photobucket.com/albums/s...g?t=1272885998

http://i569.photobucket.com/albums/s...g?t=1272886019

Looking evil, so far it reminds me of Switchblade from RW Extreme Destruction. :P

looks nicely built Craig, is the lifter going to be part of the wedge or come up and over the top and be by the wheels?

Thanks :D

You can see in this picture the bearings at the front with the large spur gear the shaft 30mm diameter will turn the lifting arms 360 degrees so it can be used to self right the robot and do tricks.
They may look a bit like horns :D

http://i569.photobucket.com/albums/s...g?t=1272994961

http://i569.photobucket.com/albums/s...g?t=1272995048

Another pic showing the basic shape and the lifting arm shaft position, and cardboard from a Pizza box :mrgreen:

http://i569.photobucket.com/albums/s...g?t=1272999251

Where do you get those gearboxes from ? I've seen them in tilly as well, they'd be useful for a robot like mine

Hi they came with a job lot i bought and have a 10:1 ratio. they are ok but i have supported the wheel drive shaft with a 30mm dia cast steel bearing block to prevent any dammage. :uhoh:

Most of the armour is done just a few bits to do :D


http://i569.photobucket.com/albums/s...g?t=1273317992


http://i569.photobucket.com/albums/s...g?t=1273318006


http://i569.photobucket.com/albums/s...g?t=1273317930

Jeez you're gonna have as much as andy now... :lol:

I don't think I will be taking two heavyweights, two featherweights and a mechaniod walker to every event; I may need a bigger van! :uhoh: :uhoh:

Wiring up the lift motor, the motor is having the integral break fitted it is 24v the break is 12vThis seams daft to me but that€™s what it has got! :uhoh: :uhoh:
http://i569.photobucket.com/albums/s...g?t=1273762316

The hub that will have the lifting arm on is a taper lock unit from Technobots. :D :D
http://i569.photobucket.com/albums/s...g?t=1273762370

The hardest thing to get right on the spur gears is the shaft centre distance so they mesh right I fluked this. :mrgreen: :mrgreen:
http://i569.photobucket.com/albums/s...g?t=1273762387

Fitted lifting forks :D


http://i569.photobucket.com/albums/s...g?t=1274809795

I ran the lifting mechanism this week I found the arm moved a little too fast and did not have the lifting power I was expecting this is the trouble when you use a motor from the scrapheap with no readable data plaque. :uhoh: :uhoh:

The drive ratio in total is 187.4999/1 this is not enough even though the lifting forks are only 300mm long. :shock:

So the spur gears are going, and a two stage chain drive will be fitted to get the ratio down even further to 583.33/1 this will probably be a bit too slow 5 seconds for a 90 degree arch, but from here I can increase the speed easily. :mrgreen:

Five seconds for 90 degrees lift should be alright Craig. By the time you've wedged the forks under an opponent and lifted for, say, one second, the chances are that your opponent's wheels will be off the ground and they'll be unable to drive away. You can then take your time and use the rest of the lift travel to tip 'em over :)
Looking good by the way.

Sprockets have arrived and are being machined next week hopefully.

Painting bits I hate this job the main chassis has lots of holes drilled for different things and every one traps the paint and when you are not looking starts a paint run. :? :?

Silver hammerite for the inside and blue smoothrite for the outside.

The new ratio will be 466.6666/1 this works out at about 4 seconds for 90 degrees. Should be ok. :D

Not much I can do until the sprockets are machined. here is the colour :D

http://i569.photobucket.com/albums/s...g?t=1275731298

http://i569.photobucket.com/albums/s...g?t=1275731298

thats looking good

will you be inter changing which hw you bring to an event or will you bring both???

Thanks :D

I will probably only bring one at a time as running 2 heavy weight robots on your own (Zack€™s help can be patchy sometimes) is quite hard,
I think only Trevor ran2 heavyweight robots at one time by himself.

If Mark (my elder son) comes then I will run two heavyweight robots.
:D

I've got to run 10 at Edinburgh!

I'm not bringing Cabrakan now so I'll gladly drive a few for you :)

Ditto, I've just got feathers and have never driven a heavyweight before so I could lend a hand :D
Sorry for clogging up your thread Craig. Nice paint colour :)

Perhaps I€™m getting too old, but it is the lugging robots and associated stuff out of the van and then getting it into the garage, and then loading the van up with tools and stuff for work on a Monday morning. :uhoh: :uhoh: :uhoh:
I think I will try running 2 heavies and see how it goes, but I don€™t think I would have many more fights in a show. :shock:

Thanks for the offers of help guys, :D

And Alan we all know you, Jonno and many others are Super human when it comes to sorting out all the things you do in a show, I know I could not get all that done in the time it takes you. And I would like to think I€™m wise enough not to try. :mrgreen:

I€™ve given up on the Sidewinder Bec for the Cherub :uhoh: , as soon as I operated the drive, a servo and a battle switch the thing went bonkers and stopped working. So I have disconnected the Sidewinder Bec, and fitted a Technobots Bec to the system this worked every time :mrgreen: :mrgreen: :mrgreen:

Happy days :D :D :D :D :D

NOT MUCH ROOM

http://i569.photobucket.com/albums/s...g?t=1276707634


SPROCKET CLOSE

http://i569.photobucket.com/albums/s...g?t=1276707746

Thats really nice Craig, good luck with it.

I didn't mean to do this test but here it is. :D :D :D
http://www.youtube.com/watch?v=a-eT2...layer_embedded

i bet you could squeeze a small mag motor in there for a bit more speed ;)

thats a cool self righter

Absolutely love it Craig :D

looks brilliant, I reckon there should be more electric lifters!

Bloody brilliant. :)

Thanks guys as you can see there is not much left of the original robot I bought a few years ago!

http://i569.photobucket.com/albums/s...g?t=1277131837


http://i569.photobucket.com/albums/s...g?t=1277132037


http://i569.photobucket.com/albums/s...g?t=1277132095

A bit of fun :D :D :D :D :D

http://www.youtube.com/watch?v=_YNVaiSAXsU

Thats awesome Craig, such a cool design

I was wondering something though, on another thread you mentioned the lifter controls are on the throttle with the servo. I did do this with Cabrakan originally but the DX5's throttle failsafes to the servo being full one way, hence it went to ful extend and almost broke the robot. It does this on all plane remotes AFAIK, so does yours failsafe ok ?

Although the throttle channel is used on a Dx5e, I converted it to spring centre position and bound the RX in that position, this means it fails safe no problems :D :D

that robots amaizing :!: :shock:

very nice

wont just be big nipper now that can show off before a fight :proud:

You will have to do a dance routine with Big Nipper now.

I have just weighed Cherub came in at 89Kg with batteries. :D
It's first outing will be Fairford I hope to just run it with some friendly robots :uhoh: :uhoh:

Haven't updated this thread for a while.


Fairford Did not go well :cry:


It€™s first time out in the arena there were several problems some expected and some not.
I did expect the flange style coupling on the lifting arm to break and it did with spectacular style.
Also the armour on the front section to be vulnerable to deformation via the Thor axe This also proved to be the case but not to the extent I was expecting.
The inner wheel arch protection plates worked very well when Kan Opener squeezed past the tyres and on to the drive motors! The motors were saved.

Things I didn€™t expect the radio seemed to get confused so when I tried to move forward the weapon would move, :crazy: it was like the TX went from mod 1 to mod 2. I changed the system round to get it working and fixed it that way.
I do not like the servo and micro switches for the weapon control.
Also the front castors both seized up!



Since Fairford I have done nothing to Cherub,
I am wondering weather to abandon the project Till the Saint dies or spend time on doing a bit of work on the robot, fixing the weaknesses.