Looking for Free Truck Blueprints Source

[frizzen]

Heres an idea, but it's street tread rather than the NDT the millitary used.
http://www.rctruckandconstruction.co...ht=lego&page=2
Lego 62.4x20 tires, you'd have to make rims, but 2.456" tall .75 wide

Also may want to check out this M35A2 build
http://www.rctruckandconstruction.co...ad.php?t=10081

[george]

Hi frizzen

You must be a mind reader! I have looked at that build and contacted the builder. He finally replied and seems like a really nice/helpful guy. I asked him about the axles and he told me the casings were #D created by his friend and he uses 3 modified servos without the circuit boards and they are power by an ESC, if I understood his last reply?

I don`t know how he actually made the connection from the servo to the axle shafts though.

Also, I have to admit, I am a VERY NEW computer user. The blueprint drawings I have here, I would like to print out BUT I don`t know how to go about it. I can "copy image" to my word document then print it out BUT that is as far as my experience goes. HELP!

Also I want to know, after the blueprint has been printed out OR saved to a stick, when I take it to my local print shop, what do I tell them to Enlarge the drawings out by so I get 1/16 scale paper templates?? Yes I am going for 1/16 scale.

George

[frizzen]

I'm just going by what the thread says, but it sounds like you're right. Three servos are gutted of the pot and circuit board with the motors hooked up direct to the input wire making it into a gear-motor. The geartrain has been modified to open up to full rotation. They're then run in parallel off an esc.

If you like that route, i would ask him what servos were used and if he would be willing to share the 3D printer file, and any other details like making outputs or steering axle. There's probably someone fairly near you with a 3d printer, ask around your computer friends. Someone on this board might also, or you can have someplace like shapeways do your run.

If he doesn't want to share the file, you might check out 'thingiverse' for other 3D printable options.

Durablity of those axles is probably not as good as it would be with a normal diff, but it's not like you're going for speed or rock crawling.

I'll get some instructions posted on how to scale it, been a while since i had to do it.

If your copy or print shop is worth going to, they should be able to do the scaling of your blueprint to whatever you like. I would still take a dial caliper with me to verify they got it correct since i'm more comfortable working in thousandths vs pica. Have them print atleast 10-12 copies so you've got some to destroy for the build.