hooker53

My Feedback: (106)

Craig. Great info. Do you know anything about an 11X? Ha. Ha.

CraigG

My Feedback: (40)

Chic,
With your 12X, go to Device SEL in the System Mode List. Scroll to the AUX channel you are using for brakes and select/highlight it (I normally use AUX 7). Scroll through the switch options until you highlight one of the slider switches. Most guys use the right slider which is designated "FLAP LV". Make sure the channel is "ACT" and if not, highlight and select until ACT appears.

In the Travel Adjust menu, select values that will have the brakes OFF with the slider up and full brakes with the slider all the way down. The direction and throw will vary depending on the type of brake setup you have, servo arm length etc.. With a UP-6 valve, 9411 servo and normal direction of travel, my values are +104% and -82% on my Futura.

Get rid of (inhibit/clear) any mixes you currently have to the brakes. Select a Standard Program Mix (51, 52 or 53), activate and enter ELEV (master) to the AUX (slave) channel you have brakes on (in my example, AUX 7). Enter values in the Pos.0 fields to get braking action with down elevator. On my mix program in Pos.0 I have D-125%/U 0% and all 0% in POS.1 Scroll over to the "Gear" box and select "1". That will inhibit the mix with the gear switch up.

That should do it. I have to bump in a few clicks of down slider to get the brakes to come on with the first movement of down elevator. As I mentioned earlier, with the "parking brake" ON (slider down), pushing down elevator will try to drive the brake servo further, so don't do it. Use one or the other if you are holding short for takeoff, for example.

Let me know if you need clarification on any of this.

Craig

redtail

My Feedback: (15)

Craig, can not wait to maybe one day fly with you guys. Can't thank you enough for the program guide. Wish there were more like you, this is a hobby not a corporate secret. Chic

Ozmodeller

Hi Guys
Thanks for all the info, it would appear that opinion is fairly evenly divided,I will give the down elevator option a try to see if I like it.

Thanks and Regards
Peter

Dieselman1220

My Feedback: (25)

Idk what radio you are using but as was explained on here earlier I do basically the same thing even with my scale jets that have Smooth stop IIs on them. I still use the Trainer switch with the servo slowed down a bit.
then also program my right slider as trim so I can use the slider if I want or can also use it as a parking brake. Again this is on my Futaba 12FG

RCFlyerDan

My Feedback: (54)

He may be on Mode 1, but on Mode 2, on the right slider, so that it isn't being operated while the primary flight control(rudder and steering) is being operated by the flying hand. I consider down elevator a poor technique, and came about when there weren't enough channels for brakes. You see the guys bouncing down the runway, this is a lot of their issue from landing too fast and applying down elevator too soon for the brakes. On full scale jets, it is the Pilot not flying(or hand in this case) doesn't apply full down elevator until all lift has disapated, usually below 60-80 knots. This prevents lifting contact pressure off of the main wheels as the brakes are applied. Slider is the way to go here.