Inspiration...

[wibblywobbly]

My 6x6 will hopefully get converted to an 8x8 over the winter, would love a Russian tank transporter. Also thinking of getting another 4x4 to make a Fordson WOT 8, these were used by the Russians as Katayusha rocket launchers on lend lease. I scratch built one years ago, but the WPL truck would make an excellent base.

phpBB [video]

[midlife306]

Converting it to servo steering makes a huge difference to the noise levels
Cheers
Wayne


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[Will01Capri]

Perfect base to modify. Think I am on truck number 14!

[wibblywobbly]

The first thing I do with one of these trucks is pull out the steering motor and the pcb. Install one of the Chinese esc's and a servo. It's very easy to do, the servo can either be hot glued in or mounted on a plate. One of the DasMikro sound cards can be installed to provide sound. These three items cost less then £30 and transform the way that the truck drives and sounds.

Bustephedon esc - Ebay
Any micro servo - Ebay.
DasMikro sound - Bangood.

The standard battery isn't bad really, you get a decent run time indoors with it, though a Lipo and a bigger motor turns it into a sprinter that will run all day long.

[AlwynTurner]

The suspension for the Maultier is the same as for the universal carrier which I designed many moons ago, here is the pic and scad code



***********************************************
module w2(){
//hub//
difference(){
translate ([0,0,0])cylinder($fa=1, $fs=0.5, h = 2.6, r = 5.5);
translate ([0,0,-1])cylinder($fa=1, $fs=0.5, h = 4.4, r = 1.25);}

//rim//
difference(){
translate ([0,0,0])cylinder($fa=1, $fs=0.5, h = 2.2, r = 14.5);
translate ([0,0,-1])cylinder($fa=1, $fs=0.5, h = 4, r = 13.5);}

//tyre//
difference(){
translate ([0,0,0])cylinder($fa=1, $fs=0.5, h = 2, r = 16.5);
translate ([0,0,-1])cylinder($fa=1, $fs=0.5, h = 4, r = 14);}

//spokes//
translate([3,-2,0]) cube ([13,4,1]);
rotate ([0,0,60])translate([3,-2,0]) cube ([13,4,1]);
rotate ([0,0,120])translate([3,-2,0]) cube ([13,4,1]);
rotate ([0,0,180])translate([3,-2,0]) cube ([13,4,1]);
rotate ([0,0,240])translate([3,-2,0]) cube ([13,4,1]);
rotate ([0,0,300])translate([3,-2,0]) cube ([13,4,1]);}


///////////////////////////////////////////////////////////////////////////
//swing arm
module SA(){
difference(){
translate ([0,0,-6])cylinder($fa=1, $fs=0.5, h = 12, r = 2.5);
translate ([0,0,-7])cylinder($fa=1, $fs=0.5, h = 13.5, r = 1.25);}


difference(){
translate([0,-2.5,3])cube ([21.5,5,3]);
translate ([0,0,2])cylinder($fa=1, $fs=0.5, h = 4.4, r = 1.25);}

difference(){
translate([0,-2.5,-6])cube ([21.5,5,3]);
translate ([0,0,-7])cylinder($fa=1, $fs=0.5, h = 4.4, r = 1.25);}
difference(){
translate([0,-2.5,-3])cube ([4,5,6]);
translate ([0,0,-3.5])cylinder($fa=1, $fs=0.5, h = 7, r = 1.25);}
difference(){
translate ([23,0,-8])cylinder($fa=1, $fs=0.5, h = 5, r = 2.5);
translate ([23,0,-9])cylinder($fa=1, $fs=0.5, h = 7, r = 1.25);}
difference(){
translate ([23,0,3])cylinder($fa=1, $fs=0.5, h = 5, r = 2.5);
translate ([23,0,2])cylinder($fa=1, $fs=0.5, h = 7, r = 1.25);}
translate([21,-2.5,3])cube ([1,2,3]);
translate([21.5,1.5,3])cube ([5,1,5]);
rotate ([0,0,39.5]) translate([17.25,-17.25,3])cube ([4,1,5]);
translate([26,1,3]) cylinder ($fa=1, $fs=0.5, h = 5, r = 1.5);
translate([21,-2.5,-6])cube ([1,2,3]);
translate([21.5,1.5,-8])cube ([5,1,5]);
rotate ([0,0,39.5]) translate([17.25,-17.25,-8])cube ([4,1,5]);
translate([26,1,-8]) cylinder ($fa=1, $fs=0.5, h = 5, r = 1.5);

translate ([25.5,5,-8])cylinder($fa=1, $fs=0.5, h = 1.5, r = 1.25);

translate([24.25,1.5,-8])cube ([2.5,3,1.5]);
translate ([25.5,5,-4.5])cylinder($fa=1, $fs=0.5, h = 1.5, r = 1.25);

translate([24.25,1.5,-4.5])cube ([2.5,3,1.5]);
translate ([25.5,5,6.5])cylinder($fa=1, $fs=0.5, h = 1.5, r = 1.25);


translate([24.25,1.5,6.5])cube ([2.5,3,1.5]);
translate ([25.5,5,3])cylinder($fa=1, $fs=0.5, h = 1.5, r = 1.25);
translate([24.25,1.5,3])cube ([2.5,3,1.5]);

//update for cup at end of swing arm

//difference (){ - warren what am I doing wrong this difference doesn't work
difference () {
translate ([23.15,5.25,5.5]) sphere (r=2,$fn=60);
translate ([22.6,5.35,5.5]) sphere (r=2,$fn=60);}
//rotate ([0,90,-10]) translate ([5.5,9.2,20])cylinder($fa=1, $fs=0.5, h = 6, r = 0.7);//}



difference (){
translate ([24.4,2.55,3.5]) cube ([1.25,3.5,4]);
translate ([22.6,5.35,5.5]) sphere (r=2,$fn=60);}



difference (){
translate ([23,5.25,-5.5]) sphere (r=2,$fn=60);
translate ([22.6,5.35,-5.5]) sphere (r=2,$fn=60);}
difference (){
translate ([24.4,2.55,-7.5]) cube ([1.25,3.5,4]);
translate ([22.6,5.35,-5.5]) sphere (r=2,$fn=60);}

//end of cup update

//hole in cup
//rotate ([0,90,-10]) translate ([5.5,9.2,20])cylinder($fa=1, $fs=0.5, h = 6, r = 0.7);




}

module idler(){
//hub//
difference(){
translate ([0,0,0])cylinder($fa=1, $fs=0.5, h = 2.6, r = 3);
translate ([0,0,-1])cylinder($fa=1, $fs=0.5, h = 4.4, r = 1.25);}

//rim//
difference(){
translate ([0,0,0])cylinder($fa=1, $fs=0.5, h = 2.2, r = 6.5);
translate ([0,0,-1])cylinder($fa=1, $fs=0.5, h = 4, r = 5.5);}

//tyre//
difference(){
translate ([0,0,0])cylinder($fa=1, $fs=0.5, h = 2, r = 7.5);
translate ([0,0,-1])cylinder($fa=1, $fs=0.5, h = 4, r = ;}

//wheel//
difference(){
translate ([0,0,0])cylinder($fa=1, $fs=0.5, h = 1.5, r = 6.5);
translate ([0,0,-1])cylinder($fa=1, $fs=0.5, h = 4.4, r = 1.25);}

}

module fsusp(){
difference(){
translate ([0,0,4])cylinder($fa=1, $fs=0.5, h = 2.5, r = 2.5);
translate ([0,0,2])cylinder($fa=1, $fs=0.5, h = 5, r = 1.25);}
difference(){
translate ([0,0,-6])cylinder($fa=1, $fs=0.5, h = 2.5, r = 2.5);
translate ([0,0,-7])cylinder($fa=1, $fs=0.5, h = 5, r = 1.25);}
difference(){
translate ([12,23,4])cylinder($fa=1, $fs=0.5, h = 2.5, r = 2.5);
translate ([12,23,2])cylinder($fa=1, $fs=0.5, h = 5, r = 1.25);}
difference(){
translate ([12,23,-6])cylinder($fa=1, $fs=0.5, h = 2.5, r = 2.5);
translate ([12,23,-7])cylinder($fa=1, $fs=0.5, h = 5, r = 1.25);}
rotate ([0,0,62])translate([1.3,-3,4])cube ([23.2,6,2.5]);
rotate ([0,0,62])translate([1.3,-3,-6])cube ([23.2,6,2.5]);
rotate ([0,0,53])translate([0,-2.75,-6])cube ([2,1,2.5]);
rotate ([0,0,53])translate([0,-2.75,4])cube ([2,1,2.5]);
rotate ([0,0,76])translate([0,1.5,4])cube ([2,1,2.5]);
rotate ([0,0,76])translate([0,1.5,-6])cube ([2,1,2.5]);
rotate ([0,0,80])translate([22,-10.4,4])cube ([2,1,2.5]);
rotate ([0,0,80])translate([22,-10.4,-6])cube ([2,1,2.5]);
rotate ([0,0,53])translate([23.5,5.75,4])cube ([2,1,2.5]);
rotate ([0,0,53])translate([23.5,5.75,-6])cube ([2,1,2.5]);


difference(){
translate ([20,7,-9])cylinder($fa=1, $fs=0.5, h = 18.5, r = 3.5);
translate ([20,7,-10])cylinder($fa=1, $fs=0.5, h = 22, r = 1.5);}
difference(){
translate ([27,5,7])cylinder($fa=1, $fs=0.5, h = 2.5, r = 2.5);
translate ([27,5,6])cylinder($fa=1, $fs=0.5, h = 5, r = 1.25);}
difference(){
translate ([27,5,-9])cylinder($fa=1, $fs=0.5, h = 2.5, r = 2.5);
translate ([27,5,-10])cylinder($fa=1, $fs=0.5, h = 5, r = 1.25);}
rotate ([0,0,-5]) translate ([21,5,-9]) cube ([4,4.5,2.5]);
rotate ([0,0,-20]) translate ([18,14,-9]) cube ([4,2,2.5]);
rotate ([0,0,-5]) translate ([21,5,7]) cube ([4,4.5,2.5]);
rotate ([0,0,-20]) translate ([18,14,7]) cube ([4,2,2.5]);
rotate ([0,0,-20]) translate ([3,10,-9]) cube ([11.5,6,5]);
rotate ([0,0,-20]) translate ([3,10,4.5]) cube ([11.5,6,5]);
rotate ([0,0,-20]) translate ([9,14.75,-9]) cube ([5.5,1.25,18]);
translate ([6.5,11,-9]) cylinder($fa=1, $fs=0.5, h = 5, r = 3.5);
translate ([6.5,11,4.5]) cylinder($fa=1, $fs=0.5, h = 5, r = 3.5);
rotate ([0,-14,62])translate([3.5,-3,3.5])cube ([9.5,6,3]);
rotate ([0,14,62])translate([3.5,-3,-6])cube ([9.5,6,3]);


difference (){
translate ([13,15,6]) sphere (r=2,$fn=60);
translate ([13.7,14.85,6]) sphere (r=2,$fn=60);}
difference (){
translate ([13,15,-6]) sphere (r=2,$fn=60);
translate ([13.7,14.85,-6]) sphere (r=2,$fn=60);}
difference (){
translate ([10.5,12,-8]) cube ([1.25,5,4]);
translate ([13.7,14.85,-6]) sphere (r=2,$fn=60);}
difference (){
translate ([10.5,12,4]) cube ([1.25,5,4]);
translate ([13.7,14.85,6]) sphere (r=2,$fn=60);}
}


translate ([27,5,0]) SA();
translate ([0,0,0])w2();
translate ([0,0,0]) fsusp();
translate ([12,23,0]) idler();
translate ([50.4,5,0])w2();
//

Apologies for the crudeness of the code, it was my first design. For the wheels you need to print 2 and glue them together.

Alwyn

[midlife306]

You’re a star Alwyn, I’ll be giving that a go
Cheers
Wayne


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[AlwynTurner]

If you do go for the maultier you will probably need this as well for the extra track
https://www.plazajapan.com/495034496013 ... tUQAvD_BwE

You should be able o use the tamiya track and sprockets with the suspension I designed. The tamiya track isn't great but so long as you don't plan any heavy duty action with the model then it should be ok

Alwyn

[midlife306]

Bloody hell Alwyn, that’s cheap, just ordered 3 because it would be rude to only buy 1 at that price
Cheers
Wayne


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[AlwynTurner]

There are plenty of supp;liers
https://www.robotshop.com/uk/tamiya-tra ... l-set.html

check on ebay, it's a standard tamiya item



amazon have them

Alwyn

[midlife306]

I just tried to buy three, said three in stock, but can't even put one in the basket

Snooze ya loose


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