Why not leave the dual rate at 100% and adjust your EPA from there? That way you also avoid accidentally going above the dual rate where you set your EPA, resulting in binding and a burned servo.

My EPAs are around 65-70 and my dual rate is at 100.

???

Page 48 of the manual, SHR for digital servos, NOR for analog servos...

The way I see it, in the programming hierarchy of the M11x, the EPA range is limited within the Dual Rate. So, when you first set the Dual Rate, you are setting the max travel of the steering without binding. Then you set the EPA for left and right travel independently.

So, lets say we do it your way, leave the Dual Rate at 100% and adjust the EPA instead, you can also go over resulting in binding and a toasted servo because at 100% the servo is probably already binding.

Let's look at the manual's way then, say we set the Dual Rate at 70% then set the EPAs, can we still cause the servo to bind and burn if we adjust the Dual Rate as with adjusting the EPAs while Dual Rate is at 100%? Absolutely! But the advantage for using the Dual Rate is that you can adjust the steering using the trim switch and without accessing the programming menu, i.e. faster adjustments. Both Dual Rate and EPA do not prevent you from going over the steering range and burn your servo.

It doesn't make much sense to me when I first use the M11x, but reading the manual many times over helps me to understand it further. The manual (page 17) actually call for the user to set the Dual Rate first before going to set the EPAs

Good luck.

M11x Dual Rate And EPA.
 

Very very well said :)

Thank you for explaining this in such detail.

i was thinking to use the 3rd channel to activate another servo to on the lighting in my drifting car...hehehe

I can see your point, but I don't agree - I can't see the "advantage" of using dual rate that way. I only use the display / programming menu when I set the EPA, which I do very rarely. I can adjust the dual rate with my thumb while I drive. If I set EPA with dual rate at 100%, I don't have to worry about if I am going to burn my servo, when I bump up my dual rate, when needing more steering (if not already at 100%).

As I mentioned, in the M11x programming hierarchy, Dual Rate is higher up in the programming function than the EPA, you can still burn your servo if you set your Dual Rate at 100% and set the EPA. You also need to understand that Dual Rate affect both left and right travel equally, while EPA is independent of left and right.

Also, if your set your EPA while Dual Rate is set at say 70% and later you need more steering and you bump up the Dual Rate higher, you can still burn your servo because Dual Rate adjustment will override your EPA setting. As I mentioned, both EPA and Dual Rate DO NOT prevent you for going out of range, it is only as smart as the user using it...

You are contradicting yourself here when you said you fail to see the advantage of the Dual Rate, when you use your thumb to adjust the dual rate while driving that's exactly the advantage of the Dual Rate function i.e. to be able to adjust with just your thumb while driving. On the other hand, to adjust the EPA you will need to flip through the programming menu, multiple key presses and that's not possible to do when you are driving.

Can you set the Dual Rate at 100% and just adjust the EPA, absolutely! But I think the Sanwa/Airtronics engineers would disagree. I don't think they put in the Dual Rate function there just to look good and without a specific purpose. Just remember this, Sanwa/Airtronics specifically mentioned in the manual to adjust the Dual Rate BEFORE adjusting the EPA, if you think that's wrong, why not talk to them directly? ;)

The choice is entirely yours.

First - How can I burn my servos if I set my EPAs at 100% dual rate? I can go above 100%, yes, but it is a lot easier remembering not to go above 100%, than remembering not going above 62%.

I know the dual rate affects both left and right, which makes it ideal for adjusting the amount of steering you want.

This is how you wrote it. Two scenario here:

A) Set EPA with Dual Rate at 100%
B) Set EPA with Dual Rate at <100%

So, do you think it is not possible to burn servo with the two scenario?

As mentioned, both EPA and Dual Rate DO NOT prevent you for going out of range and burn your servo, it is only as smart as the user using it...

Of course you can burn servos both ways, but I personally think it is easier to remember not to go above 100% dual rate, than not go above 62% dual rate. The only way to prevent this, would be to bump the dual rate to max (150?) and set EPA from there. Then you can't go to high on your dual rate and fry your servo.

Not sure where you got the idea on leave the Dual Rate at 100% and you are safe, the reason the Dual Rate on my XRAY 808 is 70% is because anything more than that my servo will start to bind and buzz. So for me 70% is max, I will only decrease my Dual Rate to take away some steering.

You have to remember, every car's steering is different. Some maxed at 70% Dual Rate, some maxed at 100% and some even maxed at 125%. Every brand has a different steering geometry, every brand of servo is different too. No two cars are the same.

Say your car steering maxed at 125% Dual Rate but you leave your Dual Rate at 100% and set your EPA from there on, then you will be losing out on some steering because the Dual Rate will cap your EPA range.

Your mileage may varies. I am just following the manual.

I'm not sure you get my point. Normally, before I set EPA, the steering will bind / hit something at 100% dual rate. Then I will leave my dual rate at 100% and turn down my EPAs until it doesn't hit / bind.

Dual rate 100% should be full steering throw, so you shouldn't have to turn it up to 125% to get full steering. But if I didn't get full steering with 100% dual rate, I would bump my dual rate to max (150?) and set EPA from there.

What do you guys think about the Reedy 2s 2500mah LiPo in the M11x. Got one on order to try it out.

Eddy

I agree with you on that. But my Savox 1267SG works properly when the RX451R was binded to the Sanwa MT-4 in SHR mode. However, it doesn't work at all with the M11X. Same goes to my ESC which is the LRP Ultimo Drift.

Whatever it is, the sensitivity and response of the M11X is still more accurate than the Sanwa MT4 in HSP mode although the M11X was binded in normal mode.;)