Hardware torque limit (AKA valet switch)

Simucube 1
1

Hi all,
I am about to put together my first OSW, using a big Mige. Something I have been thinking about is some sort of torque limiting switch to make it safe for my kids to use (my 9 year old likes to drive from time to time). It would need to be a hardware limit to be a true safety device as a software glitch would be possible otherwise. Has anyone done this? I imagine a current limiting circuit would work.

Does anyone recall the Corvette ZR1 that came with a valet switch? (don’t know if they still do, this was in the 90s I think). I was picturing something like that, a keyed switch for full power or reduced power.

Cheers ben

2

What if they flip the switch by accident which is more likely than the simucube software changing the strength by accident :wink: just explain the dangers to the kids and set the max strength lower in simucube :wink: if you limit it there they cant turn it up in the game anyway.

But as far as i know nobody has don’t anything like that yet. but it might be possible, but i might be easier to set max amps in granity.

3

I am probably overthinking it but a physical switch / hardware control is the only way I can think of to provide an “engineering” control - a software setting is really an administrative control. However I could also move to an “elimination” control and have him keep using the trusty old G27.

Or he can learn to let go at the right time.

Cheers Ben

4

If you set a current limit in granity its pretty solid.than they can’t even change it even if they try too use the simucube config tool.

5

Press the Estop or make your default profile be a low torque profile that way whenever it is started the wheel is at low torque.

Or as @SKeijmel said you can limit the MMC in Granity BUT that also limits the Max power for you without going into Granity to change it first.