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maddox
Joined: 21 Dec 2006
Posts: 786
Location: Belgium
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Team RCC featherweights
From far away Europe, I'll present the Hannibalito's and brothers,
For starters, Hannibalito III, the current successor to the overpowered Hannibalito II.
http://i172.photobucket.com/albums/w13/Babetheke/Robot%20Wars/H33.jpg
http://i172.photobucket.com/albums/w13/Babetheke/Robot%20Wars/H3leviteert.jpg
Data.
Weapon power
Ram 51mm bore 75mm stroke.
Buffertank and main storage tank, 12 oz CO2 paintball bottles with On/off valve.
Valve, Burkert 5405, with a 2mm exhaust hole in the bottom of the ram.
Voltage booster and pulse generator to activate the Burkert
Drivetrain
85mm solid UHMPE with soft rubber tread.
4.5/1 single stage gearratio with Speed 700 Turbo C motors
4 A123 cells battery pack.
Customized Scorpion XXL speedo with pull push fan setup.
Armor
3 piece shell, main part 10mm UMHPE, bottom and part of the top plate only 5mm.
The mask is waxed leather with a 5mm titanium rod frame.[/u]
Last edited by maddox on Thu Apr 17, 2008 4:23 pm; edited 1 time in total
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Mon Aug 27, 2007 2:23 pm |
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maddox
Joined: 21 Dec 2006
Posts: 786
Location: Belgium
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After the 2 events in the UK, we found out a few things that NEED improvement.
First of all, the Speed 700 BB turbo C's, albeit very strong on paper, don't pan out at all. 12V 120A stall just draw amps, and don't deliver the torque we need. 2 possible solutions.
A 2 stage gearing, 12 to 1 at least,
Or the fitting the old and trusted Speed 900 BB torque.
Both solutions will eat up weight.
Second problem. The armor supports on the back side can't take the landings. 3mm stainless steel buckles on impact. So, we are going to make it like the supports in Hannibalito I. Extend the 15mm surface hardened axles and bolt the armor to those.
Third problem. To avoid the flipper scoop bending, we made that short and rather narrow. But that makes it more difficult to slide below the opponent. A different kind of scoop will be needed. Longer, wider and even more floorshaving than this one.
Forth and mayor problem. During Hemel Heampstead, the flipperarm got caught below the arena sidewall. Trying to flip ourselfs from below that, the 15mm thick top plate of the ram broke in 2. It turned out that the plate I made it from was a cheap kind of ali, that got mixed up in my supply of better ali. Next version will be milled out of a 40mm thick plate of 7075 T7 space grade ali.
A smaller problem, and more to the feel than due real problem is the bottle-collector connection. We tried out paintball push locks and thick walled nylon tubing. It works, but I still feel bad about it.
Problem of these improvements will be weight. Currently Hannibalito III weights in at 11.9 kg.
The change of motors will get 600 grams extra. The stronger top plate will add 200 grams and the new flipperarm won't come in lighter either.
So, the search for 1 kg in this machine will be annoying and difficult.
We're already using the A123 cells, remaking the armor in 5mm thickness will only give us 200 grams at best. And will diminish the capability what we want. Survivability even against spinners.
The easiest way to get some weight back is to remove the telltale mask. What is, in the end 300 grams.
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Tue Sep 04, 2007 12:31 am |
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maddox
Joined: 21 Dec 2006
Posts: 786
Location: Belgium
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Next event. Colchester in the UK. A real blast from the past. The
Easter Robot Rumble
went into its 8 successive year.
Famous people from the days of TV were there, and even a few machines still in the same shape and form since series 7.
Ian Watts
, with Bigger Brother, the whole family, and all his funny sideshow machines like the "Chair" and the "trash container", even a fully functional, but deweaponed Dalek.
Alan Gribble
with Pussycat (inactive unfortunatly)
Rex Garrot
and his lifelong experience.
Just to name a few people.
Hydra, back into action after series 7- after the hidious flying lessons given by Gravity III.Under new managment tough. (Bigger Brother and Tough As Nails were the other series 7 machines)
But for Team RCC it was a bit of a disasterweekend if it came to robots.
The heavyweight Obsidian, after a week of dedicated work, failed to have a weapon, one of the few times I bought a new festo 5/2 valve, it failed. But for the rest, the new armor (15 and 20mm HDPE) came out with only scratches.
Hannibalito I, our most dependable machine, suffered from a broken brass coupling- most likely because the improved flipper geometry kicks back like a mule. To solve that I'm already making a new collector. I'm trying to get that ready for tomorrow.
Hannibalito III performed well enough, unfortunatly we had to apply field chirurgy to fit in the 12oz CO2 bottle from Hannibalito I. This because the other, different shaped HIII bottle was left behind on the table.
Other problem is the self removing removable link.
More pictures and even movies of this event will appear soon on the Bugs website.
Oh well. To get this tread back on track.
The move from the FRA to go for 13.6kg, but including consumables made our work a bit easier to improve Hannibalito III.
But extensive weightloss and the unfortunate fact that the new flipperarm and the mask don't like each other gave us a machine that is 11 kg 900 grams with a full 12 oz bottle.
We did put in the Speed 900 drive. Sleightly bigger wheels and the gearing recessed in those. The mountainbike, deep profiled mud tyre screwed on the thin walled HDPE wheels does a wonderfull job on traction and durability.
The armor support. The use of rubber dampeners between axles and armor do the job very well, flexibility and shock absorbing are major assets.
The scoop. I tried a 3D lay out, mixed 304 stainless and hardox. Still it bends on the corners. Titanium in the future?
The top plate. As indicated, milled from a solid billed high quality ali, it has proven up to the task.
The paintball hose connection is replaced by a steel 8mm pipe and hydraulic couplings. This is satisfactionary.
Next bit, the self removing links.
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Tue Mar 25, 2008 10:15 am |
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