Roy Havery Posted April 1, 2015 Share Posted April 1, 2015 Hi, What are the problems, if any, of installing both types of servos in one aircraft, digital for ailerons and analogue for rudder and elevator, or vice versa ? Many thanks, Roy Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted April 1, 2015 Share Posted April 1, 2015 Hi Roy and welcome to the forum. I don't believe that there are any problems at all in mixing both types. As long as the Rx supply is within the voltage range of all components, I can't think of an issue. Quote Link to comment Share on other sites More sharing options...
John Privett Posted April 1, 2015 Share Posted April 1, 2015 I don't see any problem either. My most recent helis have had analogue servos except for a digital tail servo. I don't think I've 'mixed and matched' on any of my fixed-wing models, but that's not because I thought it would be a problem. Quote Link to comment Share on other sites More sharing options...
Lee Damms Posted April 1, 2015 Share Posted April 1, 2015 Warning if using FRSKY receivers and you use a mix of high speed digital and analogue servo's don't select high speed on the RX or your analogue servo's will get hot or burn out. This is on the FRSKY receiver instructions. Regards Lee Quote Link to comment Share on other sites More sharing options...
Josip Vrandecic -Mes Posted April 1, 2015 Share Posted April 1, 2015 Hi Roy , No problems at all, I personally use analog ... because so quietly working......Digital servo used if you need precise operation for expensive models: heli,aerobatics , etc. The only thing, you should pay attention, is the reliability of the selected servo. **LINK** Cheers and welcome on board... Jo Edited By Josip Vrandecic -Mes on 01/04/2015 19:50:45 Quote Link to comment Share on other sites More sharing options...
Peter Christy Posted April 1, 2015 Share Posted April 1, 2015 If you are using digital servos, it is important to ensure that the power supply is man enough for the job. Digitals (and that description is not really appropriate, but lets skip that for now!) can draw a much higher transient current than standard servos. If the internal resistance of the battery pack is not very low, this will cause a momentary dip in the supply voltage and can lead to the servos (including the standard ones) ticking and buzzing. Best to go for physically larger cells rather than the usual "AA" size (sub-Cs for instance) if you have the space, and don't be fooled by the capacity claims of modern NiMHs which have nothing to do with their internal resistance. If you choose to go the LiPo or better still LiFe route, make sure all the servos can take the increased voltage. As Lee points out above, if you have an option, set the frame rate to the lowest common denominator (greater than 16mS). Otherwise there is no problem mixing "analogue" and "digital" servos. -- Pete Quote Link to comment Share on other sites More sharing options...
Roy Havery Posted April 4, 2015 Author Share Posted April 4, 2015 Hi, Many thanks for the help and tips submitted, it's nice to be able to have such knowledge available from experienced like minded people. Cheers, Roy Quote Link to comment Share on other sites More sharing options...
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