Why the difference?

[zoombolt]

I've got the T600n & T500.

In idle up 1 on my 500, I've set the throttle curve on a flat 90.

I'm about to set the throttle IU1 on my 600n to 100,80,60,80,100 which seems about the norm.

So why the difference between electric & I/C throttle settings. Is it that the electric needs more headspeed, or that the I/C can't take it. Or something more blindingly obvious that I've missed.

Thanks in advance.

[SRH990]

Because a brushless electric motor will try to run at a constant speed as set by the speed controller whether it's under load or not whereas a nitro engine (or most others in fact) won't, if you increase the load you need to open the throttle toadd more fuel and air to create more power but if you take the load off, i.e. zero pitch at mid stick, it will just keep on revving until it overspeeds with a risk of component failure. Think of sitting in your petrol engined car (not diesel!), if you leave it in neutral and put your foot to the floor the engine speed will increase until you hit the rev limiter built into the ECU which cuts the ignition to stop it revving any faster, nitro engine has no rev limiter so will keep going until the con-rod breaks or something else lets go.

[zoombolt]

Because a brushless electric motor will try to run at a constant speed as set by the speed controller whether it's under load or not whereas a nitro engine (or most others in fact) won't, if you increase the load you need to open the throttle toadd more fuel and air to create more power but if you take the load off, i.e. zero pitch at mid stick, it will just keep on revving until it overspeeds with a risk of component failure. Think of sitting in your petrol engined car (not diesel!), if you leave it in neutral and put your foot to the floor the engine speed will increase until you hit the rev limiter built into the ECU which cuts the ignition to stop it revving any faster, nitro engine has no rev limiter so will keep going until the con-rod breaks or something else lets go.

Thanks for that. Fully informed. Ta.