Good comments so far, especially about power consumption by servos, wire sizes, etc.

It always seemed to me that the main folks interested in S-Bus would be the Jet community and the guys who build large 3D aerobatic planes, because if offers a potentially much simpler install when you have a lot of channels, a lot of servos, or both.. simpler still if you incorporate telemetry.

But if these are the target communities for the product, then I think the US-based product offerings are not really sensible .. using skinny wires and standard connectors. Most people who build large 3D planes and Jets go for much more robust wiring and power distribution, mostly for good reasons.

The best answer I have seen is the Robbe/Futaba PSS 2018 ([link=http://shop.rc-electronic.com/e-vendo.php?shop=k_emcotec_e&SessionId=&a=article&Pr odNr=RF1660&t=2378&c=2404&p=2404]http://shop.rc-electronic.com/e-vendo.php?shop=k_emcotec_e&SessionId=&a=article&Pr odNr=RF1660&t=2378&c=2404&p=2404[/link]). It has in my opinion the best set of connectors, wiring and power management for Futaba S-Bus systems. I have purchased via Emcotec, along with the requisite accessories and am installing in a Skymaster F-4 and an UltraBandit. I wish the US distributor would wake up and offer something like this here. I have offered this feedback to them directly as have others .. hopefully they will listen.

The Powerbox guys also have some nice products and are embracing all the bussed systems, which includes almost all major radio mfrs now, including JR whose satellite connection wires are essentially S-bus functions (the digital bitstream not demultiplexed).

I have retrofit one existing plane to S-Bus and the 7008 receiver so I could use telemetry .. it's the large Skymaster Viperjet and I used the iGyro .. so the conversion from S-Bus to conventional servos comes "for free" with the iGyro for 2X Aileron, 2X elevator and 1X rudder (5 servos in all) and the 7 dedicated outputs on the RX (you lose the 8th channel on the RX in SBus mode) handled the rest .. so I didn't have to use any of the 1:3 SBus "splitters" .. it's a pretty clean install and working very well.

A "generic" Sbus upgrade, for example from a 6014HS receiver to the 7008 SBus receiver would need three of the 1:3 Sbus to conventional adapters, plus the 7 native channels of the 7008 to replace all 14 channels (using only two of the 1:3s would give you 13 channels, 2 of the 3 outputs on the third adapter would be wasted). The only reason I could see doing this is to get telemetry working in an existing airplane (that's why I did it) .. otherwise you are upgrading but with no improvement in actual function.

Dave