Page 3 of 9
Re: Morris Quad
Posted: Fri Dec 22, 2017 4:29 pm
by wibblywobbly
Not silly at all, I tried that myself, but the shafts, when straight, are too long to fit between the gearbox and the transmission housings. they can't even be shortened to fit because of the way that they are designed. The quad is a very short wheelbase vehicle and quite obviously did not liaise with Heng Long when they designed it.
The shell took around 30 hours to print, I am currently finalising the chassis length and spring mounts to fit, which is not easy as the HL wheels are 10mm oversize and everything is a precise scale fit. I will have to find some 60mm dia tyres and print wheels I reckon.
Re: Morris Quad
Posted: Fri Dec 22, 2017 4:56 pm
by AlwynTurner
There you go Rob
https://www.ebay.co.uk/itm/Lego-Technic ... SwHMJYOxU0
I've already done the wheel design to fit and posted it.
downloads/
Cheers
Alwyn
Re: Morris Quad
Posted: Fri Dec 22, 2017 5:05 pm
by wibblywobbly
Re: Morris Quad
Posted: Fri Dec 22, 2017 9:18 pm
by wibblywobbly
Tidied up the rough edges and printed the radiator, The chassis mods are coming along, just the rear to chop off. Esc on order, as are Lego wheels, but due to the festering period I doubt I will get those for at least a week.
I can get on with all of the other brackets, towbars etc in the meantime.
Re: Morris Quad
Posted: Fri Dec 22, 2017 9:49 pm
by AlwynTurner
Re: Morris Quad
Posted: Fri Dec 22, 2017 10:02 pm
by silversurfer1947
I expect you have thought of this as well, but could you fit some sort of transfer box, like is fitted in my Puma?
Re: Morris Quad
Posted: Fri Dec 22, 2017 10:31 pm
by wibblywobbly
Now I know that you are only sending messages to remind me that you are in Italy and I am living next to a damned building site!
I reckon it will run ok as a 2WD, it's not as if it is pulling a huge amount of weight or going off road. I am not particularly concerned about performance as with the trailers attached it sure as hell won't be going very fast, or far! lol.
Re: Morris Quad
Posted: Sat Dec 23, 2017 11:34 am
by wibblywobbly
Alwyn pointed me at his Lego wheel, so many thanks for that, I don't have one here yet to take measurements from. I rejigged the Openscad code so that I have a base to work from to design a Quad truck wheel. So this is my new starting point. Same wheel (but with 4 spokes) and less code.
hub();
//**************************
module hub () {
$fn=100;
difference(){
difference (){
union () {
translate ([0,0,-3])cylinder(18,17,17);
translate ([0,0,-3])cylinder(1.5,19,19);
translate ([0,0,13.5])cylinder(1.5,19,19);
translate ([0,0,0])cylinder(1.5,21.5,21.5);
translate ([0,0,10.5])cylinder(1.5,21.5,21.15);
}
translate ([0,0,-6])cylinder(15,15.5,15.5);
translate ([0,0,11])cylinder(5,15.5,15.5);
translate ([0,0,0])cylinder(16,1.3,1.3);
}
}
difference(){
union(){
translate ([0,0,10.5])cylinder(2,10,9);
translate ([0,0,-3.5])cylinder(19,4,4);
translate([0,0,6])rotate ([0,0,0]) cube ([32,2,8],center=true);
translate([0,0,6])rotate ([0,0,90]) cube ([32,2,8],center=true);
}
translate([0,0,-4.9])rotate([0,0,30])cylinder(30,3.5,3.5,$fn=6,center=true);
translate ([0,0,0])cylinder(16,1.3,1.3);
translate ([0,0,11])cylinder(16,2.7,2.7);
}
}
Re: Morris Quad
Posted: Sat Dec 23, 2017 12:22 pm
by AlwynTurner
Hi Rob, is there a typo in the third to last line, 30 degree rotation on the cylinder?
Alwyn
Re: Morris Quad
Posted: Sat Dec 23, 2017 12:38 pm
by wibblywobbly
No. lol, it is meant to be there.
