Any good car design tutorial ?

:D

@brause OK, I guess you're right about technology in this context. although it was an eye opening discovery, that the crate needs a space-grade cargo bay for simple surface delivery.
quite neat that you came up with 20K slow flyer - that's exactly what I've got finally, 20K jet glider and 1K drop pod
img

13 k costs a plane, 7 k bucks should be ok for the box that holds the payload in the center of mass at the plane, I believe. 20 k is ok for a flying transport :)

the point is: you will always need something to design that you can use for transporting payload, so you have to invest 75 points in the rocket tree: "check your staging" and "overcomplicating things" - with that you are able to hold and deliver that payload, a slow flying plane could do this better I think, than our rover. Price should be 20.000 bucks not much more.

@brause there's another thread I've started for Research Station Supply mission:
Research Station Supply
there are couple solutions, including large scale quadrocopter.
but any rotary craft is out of scope of this mission I think, because neither tech, nor budgets are there yet

@mundindel thank you :-)
I am not so far - began a new career with a special roleplay: "every mission has to be accepted and fullfilled before going on". That is a little bit frustrating somehow because it takes a long time to make correct decisions, when beginning in the RC section, I will upload that crane and the fat rover, but they are too simple, it is more a study, how to solve special problems, they are NOT perfect - the rover there misses the ABS option. And the crane is no fun to drive, i'd say this vehicle is my worst career object but it helped finishing that special contract, that made me really angry, because of that platform that was too high for the wheels to enter. Better idea: quadrocopter or a special slow moving flying saucer. The smallest electro motor is quiet capable for making cool vehicles, that is the best way. But I was too much interested in cars & rovers, my fault ;-)

@brause good input
I can build whatever right now (>2B in account), but trying to get the unspoiled sense of RC branch, by staying in contract budgets 😆. still applaud to your idea of a 6-ton
rover that just rolls over anything. do you have a picture of that suspension you mentioned ?
I start thinking about using Vizzy for some tweaks as well. BTW you know that Brake can be applied gradually, right ?
using interstage doesn't help, neither side one, nor cylindrical. you can attach the box in designer, but once mission starts, it detaches immediately.
how did you make an arm ?

Fascinating Spock would say. You have nailed everything correct and it is true, it is real hard to make a rover work and you want to travel safe. I made some invstigations on the RC side, because I believe first you have to learn how to move on Droo before you start firing rockets into the sky, this is the more easy way to make the career, but RC is quiet different.

1. point to consider: the more mass your rover has the more stable it will be, I made a 6 tons rover investigation just for my personal interest yesterday: that made the 125 kilometers durability contest without any steering, just moving at about 20-30 m/s and on flat regions you can drive at a speed at 50 m/s and you can go out with the dog in that time, you will receive that 125 km contract without any serious problem because 6 tons make the vehicle stable, it will not jump in that way. To receive 6 tons you need to make the vehicle big: +- 10 meters length and the wheels about 5-6 meters wide, you should have the rover wheels at about 60 to 80 percent that you have a good grip.

2. and second thing: the mass middle should be as close to the ground as possible but consider that you have to have a fair distance to the ground when driving over steep hills. So you have to balance this problem - make a test drive parcours for finding the best fitting distance to the ground. I use long arms that move out of the body of the rover and between these long arms and the wheel you install a suspension, make it as long as possible to max the distance out! The wheel suspension I would cancel, you do not need two suspensions on one wheel. Advantage of suspensions like this: you see exactly the movement of the wheel in relation to the car body. You could choose a 6 wheeler with suspension but I believe this is not cheap ! More realistic is a 4wheeler that has a lite torque on all of the 4 wheels so that you can move very precise hill up and hill down....

3. my last advise. For riding downhill with lots of mass you need precise movement, as I told before. So you can reduce the velocity very nice when descending, by installing an ABS system to your rover. This helps you in emergency case traveling extremly secure over mountains. Open vizzy and make an ABS program like that:

on start
while true
if velocity surface >= 21 then
set brake to 1
if velocity surface < 21 then
set brake to 0

I wish you good luck on Droo.

PS: the cargo is a special problem. The first cargo contract you need to mak a solid hole in your rover that can be closed on the top and on the bottom, this is a design problem, you need to craft/build a cargo room and with a "side interstage" (check techtree points 50 for overcomplicating things) you can blast or open the bottom to leave the cargo on the designated place. This will not help in any way because there is a contract where you need to move on a platform that is way too high so I made an "excavator" with a long Arm that can flip that cargo on that designated place. Be careful with long arms because this leeds to instability problems.... design it simple :)

@mundindel on PC you have to copy the craft link, then in the in game designer, press ctrl + v.

@t4zcomz 👍 thanks for the answers
couldn't download your truck (the link says Download For Mobile, and just does nothing on a PC)

OK, managed to finish the mission. the box kept dropping through the floor made out of fuel tank. then I've replaced it with a flat strut, and what did the trick I think, was - not attaching the box to anchor point, but just placing it on the surface. it was bouncing a bit during the ride, but didn't go through the floor this time

-Payloads can't be touching panels. They need a lot of space between them and walls or they'll fall out
-Haven't found a work around for the village camera yet. But I find using orbit aligned (birds eye view) sometimes helps
-Blocks are very primitive. You can't resize them, change their dimensions etc. They're basically useless in campaign mode

disabling Auto Rotate Parts also quietly disables surface attachment - is it expected ?

This sounds like a bug

It's annoying getting even a usable car. I made a cargo truck for contracts. It works perfectly in desert, but in mountains you need to be careful.
https://www.simplerockets.com/c/8PK6N2/Cargo-Truck-for-Contracts

I don't have tips for cars and made the truck mostly from trial and error