I have had several planes with multi turbines. I have always used Y leads, on the Arado I have 6 engines with 6 Xicoy ECU's on one Y lead but these are manual start engines are started one at a time. I have 3 engines sharing one A123 battery.

With my Horten I had 2 Wren 44 engines with kero start. Both were kero start but was using a 2 cell Lipo for each engine. I had 2 Jetcat P60 engines in a Su27 and they were kero start each with its own 2 cell Lipo battery and a y lead.

There is absolutely no problem in running multi engines on a Y lead if using Xicoy ECU's with the Kingtech. I have not tried kero start on a single A123 3 cell pack. I see no reason why it would not work, but you may care to try it on a test bed first. Also fit a Y lead to the battery so you can increase the battery power temporarily while starting. If you fit a switch in the signal line from the ecu to the engine you can start one engine at a time lowering the total drain on the battery when starting.

A better alternative is to use a 3 cell A123 1100 mAh for each engine. I have one that I use for my K45 and it does at least 4 10 minute flights with kero start. It sounds a low power pack and looks tiny, but the power does not drop off till it is nearly exhausted and it works well.


John