ORIGINAL: Speedy-Gonzales
HEY... Back on the subject of Shrikes.......Do you use MG servos on your high speed models?
I have been using the Spektrum DS-821's and having failures. Would like to move up on servos.
How about
: Hitec Digital HS-5625's ?
http://www.servocity.com/html/hs-562...tal_speed.html
But here again...
metal gears?
I really don't think the mini size servos have a strong enough geartrain comparred to standard size servos. The mini's Hitec Digital HS-5245 put out good torque numbers at 6V BUT can the smaller gear teeth bare the loads for high speed flying?
http://www.servocity.com/html/hs-524...ital_mini.html
I have avoided metal gears, only because of the advice on RCU to avoid them with high rpm engines and light airframes with minimal vib damping. I have no personal experience to back up the claim that they can be problematic. There is logic in the claim that they can wear more quickly due to vibration, but I don't have a handle on how big a problem this is in practice.
There are a number of Demons flying around with HS-225's on the elevons. I wouldn't hesitate to use them on any sport .40-.50 powered version, but admittedly I would also use nothing less. In terms of torque, they have plenty for the task, especially if the builder is mindful of using maximum mechanical advantage in the linkage setup. I haven't heard of anyone stripping one yet, but that does not mean it couldn't happen. But there is no harm upgrading servos, there are plenty of reasonably priced servos with much higher specs. The 5625's look like a good choice.