Dymond D47S "Fast" Servo

My current project is the Libelle DLG by Dream-Flight, which was built with the Hitec HS-35HD servos in mind.  However, there have been recent issues with the quality control of these servos making them more difficult to locate.  (Review can be found here.)  Hitec is working to resolve this issue but due to timing, I sought an alternate solution and in the process found a terrific little gem or "Dymond" shall we say.

While there are many micro servos in the market place, finding one with a thickness less than or equal to that of the 35HD was difficult.  The driver behind this size is not only to limit weight, but the Libelle wing is only 12mm thick.  The other factor was finding one with sufficient torque.  Based on my research and several recommendations, I settled on the Dymond D47S series.

Dymond D47S

Dymond D47S

The Dymond D47S is considered the "Fast" version of the original D47.  It measures 17x8x22 (mm) in size which is very very small.  The pictures don't do it justice, but help to depict just how small they really are.  Even at this size, they are able to deliver 16 oz-in of torque. And to top it off, they are also  a high voltage servo meaning they can handle up to 8.4 volts. To those flying with 2S Lipoly packs, this is a welcome feature.

My initial perspective prior to receiving them, was that they appeared slightly odd and boxy compared to other servos.  This is just another one of those opportunities to be reminded not to judge a book by it's cover, because once I had them in hand, my opinion quickly changed.  They are extremely light weight and the thin nature of the mounting lugs are a nice feature.  Looking back I'm not sure why the design didn't initially appeal to me because they are quite impressive.

 

Dymond D47S (left) Dymond D37 Extreme

Additional nugget...the D37 Extreme is another offering from Dymond.  I purchased a couple for review and will post on that model shortly.

















Here are a few additional pictures for comparison purposes of the Hitec HS-335HD & Dymond D47S.