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--------->QUADROCKER Micro: An ATV Mod w/ Controllable Figure

Would you ever Quadrock an RC Crawler?

  • Definitely

    Votes: 15 31.9%
  • Maybe

    Votes: 18 38.3%
  • If there was a large after-market

    Votes: 4 8.5%
  • No way

    Votes: 12 25.5%

  • Total voters
    47
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Getting ready for V2...
 
QUADROCKER Micro: An ATV Mod w/ Controllable Figure V2

After getting the wrong parts from CrawlerX, I eventually received all of the things I needed so I could begin...

First, I flipped the transmission back to stock so I have room for the front biased quadrocker part.
20130527IMG_9048untitled_zps74937d57.jpg


I used the original losi rear battery tray part to put electronics on.
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I used two servo horns to raise the rear frame support rail so the leaf springs can flex as much as they can. I will eventually replace these leaf springs with something better.
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Servo mounting was tough with no instructions. You have to mount it on the frame instead of on the axle (which sucks).
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I had to add a super long servo arm to make it work.
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It's an rc truck! Most likely better at crawling then it ever will with the quadrocker installed. On this build (V2) I would like to make the controllable figure simple to remove and install.
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Atv Parts from V1 as a mock up.
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Now time for the hard stuff...
 
First, I printed a new and improved servo housing.
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Installed the servos. The new one is on the right. I wanted to have both on hand for comparison.
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I am using some stock tf2 driveshafts but I think I will need the junfac style balljoint/pin shafts to move the body around more fluidly.
2D560650-A815-4093-87E9-85FDC019AB98-2503-0000038B89565AB2_zps2b5a8c56.jpg


Next up, making it work
 
Extended the drive shafts
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This pick and peel foam from inside of a pelican case works well for tire foams. You don't even have to star cut them.
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Positioning the new torso part. Now instead of the servos being on the chassis, they are part of the weight that moves around.
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E813B7DB-D172-44BB-858D-CF8D683E0541-3541-000004C3AEB27BFF_zpsdd5d6183.jpg
 
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I decided I needed the lower links because it was just too floppy with only the leaf springs.

I use the receiver antenna tube to cover the threaded rod of the links. A red wd40 or canned air tube works too.
20130602IMG_9119untitled_zps079b9409.jpg


I did lose a little clearence due to the links.
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20130602IMG_9120untitled_zps3d8ac9a8.jpg
 
Thanks!

Here is the old servo cover used to create a platform for the quadrocker figure to sit on. It's pretty sturdy considering the 3d printed sides are, well, 3d printed. If I create my own chassis these parts would be build in.

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The figure's shaft is connected to the servo cover. It grabs onto the aluminum with a star washer.

IMG_9131_zps548b250a.jpg


I can adjust from left to right because of the slot.

IMG_9132_zpsa10939ec.jpg



Assembled

IMG_9136_zpsa8bf9610.jpg


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Now, Should I use smaller wheels? It would be a little harder to flip. With the figure, the CG is pretty damn high...

IMG_9139_zps396eb375.jpg


IMG_9140_zps667e6ade.jpg
 
Ok, so I updated the side braces so the walls won't crack when I drill the screws into them.
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It's getting there...there is a lot of weight tuning on the axles to do.
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Next up, some videos. Be warned, it's pretty creepy without hands or legs.
 
Yeah I use a DX5e radio and an OrangeRx R410 4ch receiver.

If anyone knows of a pistol style controller that also has a analog stick....
 
It's been too long since I worked on this thing. I had some time so I decided to replace the tires with some boggers. They are much smaller and help with the CG.

687C88FC-FEAC-4D14-97D2-4FD599B375D5_zpsyup6cyji.jpg



I used some 0.040" wire to make a leaf spring for the rear.

One version:
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20140101IMG_0703QuadRocker_zpsdf46fa0d.jpg



Another version:
20140101IMG_0705QuadRocker_zps18074f10.jpg



Now I need to do the front. So far this is way better than before.
 
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