The Power HD DSM44 is a tough little servo that brings all the features without a big price. They start with a smooth coreless motor, join it to an aluminum alloy and copper gear set supported by an MR74 bearing and control it with accurate digital circuitry. Did we mention it only weighs 6 grams? Yeah, we think you are going to like these servos.
Notes: These do have a bit of play in the gears, similar to other makes and models costing much more. (We have recieved complaints from a few customers about these servos when they are glued into a wing for ailerons they tend to whack out a bit (jittering). It does not happen all the time, but we have had enough complaints for this to be a concern. The servos are fine before gluing into the wing, then jitter afterwords.)
|Stall Torque||1.2 Kg/cm (16.66 oz/in) at 4.8V|
|Speed||0.09 sec / 60 degree at 4.8V|
|Voltage Rating||4.8V - 6.0V|
|Dimensions||20mm X 8.3mm X 24.3mm (.78" X .33" X .95")|
I have 4 in a DLG glider and they work very well. I have had to paint the wires at the circuit board with liquid plastic on a couple, where the wires were exposed a bit more than I'd like. I took them all apart to inspect. I was concerned as I was stuffing them into small cramped places. They have worked well all summer and I'll be getting more for some upcoming winter projects.
I've used these in numerous models for years now and the only time I've had them fail is when I burry my model in the ground! I use them for my small combat wings and they are both tough and reliable. Noisy? Slightly, but I would recommended them in a second. Everyone I know that uses them loves them as well. Can't beat them for the price!
I bought 4 of them for a glider of mine. They are fast, very noisy, and do not center well. Before I could take the glider out, 3 of them have failed. I would not recommend these at all. (Aloft covered them under Warranty!)
These servos are well worth the price and work great in the Alula. They are really small, yet powerful enough for this application while retaining excellent centering and smooth movement. Once they are back in stock, I will buy another batch.