What are u guys using for the Throttle Servos in your 28% planes with a DA50?

I was using Hitec 5245MG (Digital) & have had 2 servos go bad (both on throttle). I'm using a CF tube linkage for a stiff control rod etc.

Anyone using Nylon gear servos? OR shd I stick to Metal Gears (even for throttle)

--Arvind

I use any standard servo that I have available, and have never had a problem.

I have used from standard to 5625's for throttle, if its a big bird and you are going to need good quick response then the digital speed is nice. Otherwise I am using either Hitec 475-625's.
I thought CF was a not a good idea for throttle??? Anyone???

CF is OK as long as there is insulation (electrically, like a nylon clevis) between the pushrod and the engine. All electrical activity must stop at the engine.

I've used a 5245 but only for a short time. I find that any standard servo is OK, but the mini's and micro's break their gears from vibration.

TF

I was told never to use a metal gear servo on the throttle. I got this from my heli flying...it is a hard and fast rule in Helis. For some reason the motor vibration gets transmitted through the servo and destroys it eventually. This doesn't happen w/ Nylon gear servos.

I've been using JR 8101s I have left over from a 1/4 scale plane a long time ago.

FWIW... Sullivan Precision Rod (Carbon) is buffered with plastic... it doesn't conduct.

I use Jr 811's

I use the the CF with 4-40 rod and Ball links on both ends,and use a futaba 3004 nylon geared servo and had very good results.

JR DS811. Fast, digital, reliable, tough and low in cost.
Carroll

I also use a JR DS811, on my DA-50 I use the Sullivan carbon precision rod

I also use the jr ds 811 no problems so far

Interesting, nylon that doesn't wear due to friction.

I've used a Hitec 225mg on the 28% Extra that lasted for better than a year, A JR 4721 that lasted until it hit the ground, JR 8411 on the Sukhoi, and another 4721 on the Giles. Metal or plastic should not make a big difference on a plane as long as the servo is large enough to handle the load of the push rod, which isn't much if you don't bind it up with poor angles or servo travel too long for the throttle lever rotation distance. Those that try to use servos more suitable for electric flyers are usually the ones that have the most problems. There's such a thing as too light, and going over board with some things can be a problem at times.

Im going to give a 6965 a go in my next plane

Go bad? What failed? Gearing?
How long is the servo arm being used? Not using an over extended arm are you?
What about the discussions of using a long servo arm to quicken the throw but actually you continue to "work" a smaller amount of gear teeth, thus putting a greater load on that section?
A smaller throw arm distributes the load over a greater travel distance, thus distributing the load with less torgue needing to be applied across the entire gear travel.
You may loose miliseconds in travel time but not the servo, which obviously has a greater malfunction result!
Comments anybody?

Personal experience has indicated that the use of the shortest arm that comes with the servo, attaching the linkage rod at the servo arm's most inside hole, while attaching the linkage at the most outside hole at the carb throttle lever, provides the most "naturally" linear throttle motion. Using a longer arm to provide a "snappier" throttle serves no purpose and may well be detrimental. Better to use a faster and more accurate servo with the range of motion properly adjusted to match the rotational motion of the throttle arm at the carb.