Team RCC robotter.

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    • Bullfrog... (sorry for the English , but my Deutch is not good enough)

      In 2009, Froggy (Tony Fowler) did tell about a heavy he was building. And when some promised bits didn't show up, a few of the Dutch (and 1 Belgian) roboteers (thanks Kos and Inventor) dove into the CAD programs, lasercutters, gearmilling machines, TIG welders and so on. This cumulated to Bullfrog Breed, Tony's brainchild, and hard work with is tools, combined with Dutch/Belgian sportmansship .
      Unfortunatly, the outing of it at RIAT 2009 didn't go as planned. The experimental setup with a progressive flipper system with a 70*200 ram(a brainfart of me, what was digesting for a long time) , and the low speed due the 24V drivetrain made it kind of a mellon.

      Tony took the haft in own hands, and shuffled the guts , put them in an enlarged body, recieved a new 100*130 ram, blagged 36V NiMH batteries and put all the Electronics in a armored box.

      But Tony, not a Team with large heavy lumps of meat like Leo or me, had logistical issues. So, in the end, Bullfrog ended up with Team RCC after the O2 event.

      And now we took it out of the Storage Shed of the Master of Toys, Leo.

      After stripping Bullfrog, we got this.

      A battlescarred chassis, with impacts from Thor on the steamboiler armorplate over the drives, dents from Kan Opener, and even a huge rip in a main support from the same.

      After some discussions, Leo bought a set of LiFePo4 batteries. 4 sets of 5S 4200mAh blocks.

      Talking to Jeroen van Lieverloo, I aquired one of the four 140mm bore FP rams made bij Kos. (later it became an exchange for a LP buffer). Calculating and remeassuring, I came to the conclusion, Hannibalito 4 is a good precursor...

      I measured up the old frame , and made the decision. If Leo can invest in LiFoPo4 batteries, I can cough up the Hardox 450 for a monocoque.
      The early start. A 6 kg heavy thick walled 102mm diameter molybdene alloy pipe is the buffertank and part of the frame/armor monocoque. The 1" BSP outlet to a SMC valve (simular to the one in Tsunami) gives us the flow of 5 Burkert 5404's in a reasonable package. Unfortunatly, I still need one of those 5404's as control valve.
      The 490*530 3.2mm Hardox bottomplate gives us a firm baseplate.

      After a few days of intermittend working on Bullfrog, we ended up here.
      Most important bits are in place.
      The drives are selfcontained units, removable with 4 M10 nuts. Designed that way. from the start. Unfortunatly, this is a heavy way of building, 18 kg dedicated each unit. On the other hand, the power comes from the very rugged Iskra AMG 1.2 kw motors and the Kos/Inventor drivetrain is as bombproof as possible in that weight.
      Still controlled by a Sidewinder , commanded with a Spectrum DX6 and BR6000. Valves will be controlled by an Inventor RC switch.

      This weekend we dedicated to some fiddly bits, but also to the flipperarms.
      In the end, a 140mm bore FP ram delivers 8.4 tons of Force. And that ain't a fiddly bit.

      A more convulted piece of plumbing.

      Trying to keep it as simple and light as possible, as wel small enough to give the bottles free passage, it was a fun-welding-experience.

      But after a mornings work, I connected every bit.

      More bits and bobs.

      Dieser Beitrag wurde bereits 2 mal editiert, zuletzt von maddox ()

    • Im Forum von der DRG hatte ich schon ein paar Bilder entdeckt. Aber nachdem ich kein Holländisch/Belgisch verstehe und beim Lesen nur ein paar Fragmente interpretieren kann, ist's bei den Bildern dazu geblieben.

      Ihr habt euch ja sehr viel Arbeit mit der Wiederbelebung gemacht.
      Sehr gut gefällt mir die Taktik, die Antriebseinheiten abnehmbar zu haben. Spart beim Transport bestimmt viel Platz und vor allem Gewicht. (... wir alle werden älter und die 100kg zum Tragen werden immer schwerer.... ;) )

      sorry for the English , but my Deutch is not good enough

      Keine Hemmungen, Mario! Du kannst Deutsch sehr gut.
      Keiner von der DRG muss Hemmungen haben, hier im Forum auf Deutsch zu schreiben und es wären ein paar Fehler enthalten. ;)
      Interesse an Elektronik für Schaukampfroboter und Kettenfahrzeuge (Fahrtregler, ESC) ? =>
    • Yesterday, it was time for the first pressure tests with CO2. I should have recorded it. Opening the CO2 bottle, it takes a while to hear the filling noise stop. Good and bad in 1 go. The good news, pressure build up is smooth. Disadvantage, refill time is longer than expected. But that was with only 1 bottle filling.

      2 leaks were audible, and soapy water as a guide did show me 2 teflon taped connections leak. But slowely.

      Time for a test of the 1" bsp monster valve. 24V DC is provided to the control burkert 5404.

      Black and red spots in front of me. Ears ringing. Chest feeling like it's hit by a sledgehammer.

      The valve worked beyond expectation... Luckely that monster ram wasn't attached.... next valve tests will be LP or with RC.
    • Original von Marien
      or a demonstration at MMM....?

      Wäre natürlich schön, einmal einen Heavy in einer Demofahrt zu sehen.
      Persönliche Befürchtung: dass der Arenaboden eventuell bei den Einschlägen des Flip-Up ( bzw des hochgeschleuderten Gegners ?) "ein bißchen leiden" könnte. :D
      Interesse an Elektronik für Schaukampfroboter und Kettenfahrzeuge (Fahrtregler, ESC) ? =>
    • The weight with full bottles. 95 kg. Royaly mesured.

      The first life tests yesterday evening.

      The drivetrain was proven before, but did prove it again.
      The Iskra AMG 1.2Kw 24V motors are rugged. The 20-1 gearratio to 250mm airtyres gives a very fast acceleration and the 33V from the 8400mAh 10S LiFePo4 pack makes that it goes fast enough to satisfy our needs. Also, the Sidewinder we use survives stall nicely. Because that was the only glitch in the drive. A M6 bolt got in between the first stage and was nicely reshaped.
      Bullfrog makes nice wheelies.

      On the other hand, we our RC switch controlling the weapon uses 2 small relais (standard types like on the Graupner/Futaba switch), and those can't handle the power the Burkert coils ask. A 24V DC coil asks only .5A or so.
      But we had 24V AC coils on them, and that's another matter. We should stick those to the CO2 bottles . "No, there ain't no bottlewarmers in this machine".

      In short, we fried 1 of the relais on the switch, and we don't have any spare coils atm (the van got involuntarely empties last week)

      Next week will be dedicated to painting the hardox ,aquiring DC coils and reinforcing the armor over the electronics.
    • Wieso Joke, die Perm die bei Luzifer verbaut sind, erzeugen Ordentlich Abluft, wäre interresant ob das was bringt, einziges Problem was ich in Zandvoort damals gesehen habe das die Leute Ordentlich Probleme mit Kondenswasser haben...

      Hier gut zu sehen wie der Akku Zugetapet "Zugeklebt" ist, aber so ein Abluft Schacht direkt auf das Ventil, wäre doch mal nee Überlegung wert?

      Wir bauen Showkampfroboter, unsere Homepage schaut mal rein!
    • Original von IceMaster
      ...aber so ein Abluft Schacht direkt auf das Ventil, wäre doch mal nee Überlegung wert?

      Nein, ist es nicht. Jede Form von Heizung ist bei pneumatischen Systemen verboten. Wenn wärmeproduzierende Teile wie Motoren und Akkus zufällig in der Nähe der Pneumatik montiert sind wird keiner etwas sagen. Ein Abluftschacht der die Wärme gezielt weiterleitet ist aber vermutlich regelwidrig. Der Removable Link der bei Hannibalito4 mit dem Bürkert verschraubt ist, ist zumindestens grenzwertig.
      haben ist besser als brauchen