I just bought a used 72" QQ Yak with engine and all servos except for the rudder. The specs call for a servo with a minimum of 130 ounce-inch of servo torque. I found [link=http://www.troybuiltmodels.com/items/HD-DS120MHV.html]these[/link] for a good price and wondered if anyone has experience with them. Their specs are:

Operating Speed: 0.13/0.11 sec/60°
Stall Torque: 164oz-in. at 4.8v, 178oz-in. at 6.0v, 214oz-in. at 7.2v
Dimensions: 40.7x20.5x39.5 mm
Weight: 56.0 (g)
Operating Voltage: 4.8v/6.0v/7.2v

I DO want to save some money but DON'T want to take any chances with the plane. The seller says they're fine.

Any advice would be appreciated.

How much are they, Cappaj1? Oh, never mind.. I didn't see the link at first.

The only issue I can see is the voltage requirements for the higher torque. That may add to your cost if you opt for that 7.2 volt package.

CGr.

cappaj1

I read in the GP Ultimate 160 thread, a guy has these in his plane. I'm not sure how they are holding up, but shoot him a pm. It was a recent post. If any trouble finding it , holler. I've also seen where some of the guys are trying them in smaller planes to test them, before putting them in the high $$$$ projects. I was looking at these servos for my Ultimate, but caught a good deal on some Hitec's

cappaj1 ,


Keep in mind, you get what you pay for!

I agree. Found another thread where a guy totaled his Yak after one of these servos went full right on him in flight on it's own. This was verified on the ground; when connected to the receiver it went full right upon connection. This was after replacement of the original servo which failed. I don't need to hear any more. Even if they were fine 99% of the time, I would rather not take the chance with my Yak.