12FG expo

[t-rex pedro]

Hi guys

When using expo with the 12FG am I right in thinking I need a negative figure?

Thanks

[Aidi]

Pretty sure thats correct Pete. Read the other day it was + for JR/Spektrum and - for Futaba.

Chuck in -20% on your tail and see if you noticie the difference....

[robgt]

Unless the 12FG works differently to other radios, negative expo will speed things up around centre stick - positive will slow it down.

Cheers,
Rob

[Steve]

Test it by putting in 100% expo and see what happens to the servos on the bench when you move the stick, then try -100%

Should be interesting...... but will give you the answer you require.

[DemonJim]

Yep, expo on all Futaba radios is negative if you want to reduce sensitivity in the centre of the stick range.

With your 12FG the on-screen graphs should confirm this is the case by flattening out in the centre rather than going sharper.

[t-rex pedro]

Unless the 12FG works differently to other radios, negative expo will speed things up around centre stick - positive will slow it down.

Cheers,
Rob

Its always been negative on my other Futaba sets to soften up around centre so I'd expect this to be the same Rob. I definitely dont want to speed it up though so any other inputs welcome just to make sure!!!!

[Aidi]

Unless the 12FG works differently to other radios, negative expo will speed things up around centre stick - positive will slow it down.

Cheers,
Rob

Just reading back a few threads, Moyesboy posted that Futaba used a - to increase the expo around the center where as JR used a + value!

Seems quite bizzare if you ask me.. Much like the fact that futaba didnt put a model match feature on their radio. With todays technology, that just baffles me. And Pete knows exactly where i am coming from with that comment!

Rgds
Aidi

[t-rex pedro]

With your 12FG the on-screen graphs should confirm this is the case by flattening out in the centre rather than going sharper.

Good point. The penny just dropped! Case closed.

Thanks guys

[electricsceadu]

futaba got it right -ve = less movement
+ve = more movement
at centre

jr got it backwards

[robgt]

That would depend how you think about it... If you think "I want to add some expo" then I guess the JR way is right LOL

I guess I've used the Spektrum (JR) stuff too long now, and forgot Futaba do it the other way around... I don't use any myself so no suprise there

Cheers,
Rob

[DemonJim]

Whichever way is correct it'd all be a lot easier if it was the same for all brands. Futaba and JR/Spektrum can't even agree on the polarity of the charge socket, never mind things like servo directions

Even as a big Futaba fan, I agree totally that +'ve for more expo makes the most sense (otherwise it should be called 'sensitivity').