rover

[Cannon]

i'm driving a rover on duna but i have a problem.

if i'm going faster than 10 m/s and turn left or right my rover do some spins and crash.

Edited August 22, 2014 by Cannon

[Kasuha]

If you're driving your rover with WASD keys and you have reaction wheel on it, the torque might me helping the rover to topple. You can try to either drive in docking mode or remap your rover steering keys to something neutral, e.g. IJKL or numpad.

And of course, rovers need low center of mass so it might be also problem with your design.

A screenshot would definitely help.

[Cannon]

[r_rolo1]

That is a very light rover with some very powerful wheel propulsion. If you don't use SAS and drive in docking mode ( or similar , like Kasuha says ), you will get issues when turning even at moderate speeds ...

[Vectura]

Plus the front left wheel is broken and so I don't think it will provide a force at all (apart from dragging on the ground)

[Kasuha]

The center of mass seems to be fairly high compared to the wheel span so it is possible source of problems.

Also the probe core contains reaction wheel, albeit a weak one. It likely adds to the problem too.

And last but not least, you should not drive with broken wheels.

Repair the wheel (or all broken wheels) and just drive carefully and use docking mode, slow down before you turn.

[capi3101]

General guidelines for rovers - build them low, build them wide, add/use SAS/a reaction wheel, and use docking mode while driving. I also like to encase the critical bits (probe core, batteries/RTGs, etc.) in parts with high impact tolerance (structural panels/girders), so the slightest bump doesn't cause a massive, mission ending explosion. I definitely would not use the probe core and it's main battery as a hood ornament...

Folks here have given you some good advice; if you're not adverse to redesigning your rover, I'd do that. Otherwise I'd just slow down if you can...Duna does have some majorly sloped terrain (trust me, I know).

[nick669]

those wheels aren't made for light rovers. they have very high traction (quick turns= bounce or lose control easily). Try RoveMax Model m1 (not high traction, a little more heavy and requires more energy). and always test your rovers before launch .

[cantab]

If you haven't already, right-click the rear wheels and disable the steering. Unless you want to make tight turns in a big rover you're best off with front-wheel steering only, like a car. You can also disable the motors on two of the wheels to halve the power consumption and slightly drop the top speed.

[Reactordrone]

Turn Caps lock on for fine steering control to reduce rollovers when driving rovers.

[capi3101]

Both cantab's and Reactordrone's advice is sound - particularly with small, overpowered rovers.