Hey,
I have all digital servos on my Sukhoi and can only get like 2-3 flights and the batteries are down kind of low. We have two batteries plug into the reciever. My flight times are 10-14 min. I was wondering if I need to buy one of those programmers for the digital servos I have in this plane. There are 8 servos that are digital.

Are your servos ganged? ie more than one per surface? Did you feel a lot of binding in your hinges when you installed the surfaces? Are your pull pull cables binding on the fuse? Is your throttle linkage moving freely (no major bends in the rod)? What size are your batteries? What model number are the servos? If you have ganged servos you can really drain your current if they are not perfectly setup (they can fight one another). Excessive battery drain can be a sign of all the above. The other thing is that if you fly like I do (lots of 3D) you are moving all your servos most of the time. So you just may need to recharge a lot with your battery capacity.

MAH are your friends!

How big a plane and how many servos?

I have seen a 3.3m Comp ARF Yak flying. Speaking to the pilot, despite having two GP3300 flight packs, he recharges after every flight.

Otherwise, does not sound too far off. I have rarely flown more than 3 or 4 flights without recharging.

These servos are in my H-9 Sukhoi. I have two servos per ailoron. I was wondering if one servo is fighting the other or something. I have notice my left ailoron wants to wiggle a bit. But I heard digital servos do that to find the center. I just know they are Futaba Digitals. I dont know the number. I will check the next time I am out at the barn. Now I do a lot of moving in the air. Like the rolling harriers knifeedge flight. Basically I am never flying level. Also I will check what mah battery I have.

I know that Futaba Digitals do run the battery down fairly quick. I have a Heli with 5 futaba digis on a 2000 mah pack. Only get 2-3 flights usually about 12-14 mins a flight before I recharge.

There is an easy test to see if your aileron servos are fighting each other. Disconnect one of the linkages ball links so you can just slide it on later. Now power up everything and see if the linkage you disconnected will just slide on the bolt at aileron center (it should go on without too much resistance). If it does not, you know the servos are binding. Try the end points. Then try at all points in between. This is a good test to see if you have a non-binding aileron setup.

Another thing you can do is get a H9 in line servo current meter. That will test if you are drawing excess current.

hi i have never owned or used any digital servos at all but from reading bout them they seem to havea very i current drain off the battery. can i ask Y? is it worth the extra money the buy digital servos?

digital servos are much faster. plus they are very strong to hold the control surface up. Plus one really good thing is if you have two servos per surface if one servo quits the other takes over. Mainly if you fly 3D and fly it low to the ground you need that response. Trust me it really really helps out.