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5-channel receivers

701 Views 1 Reply 2 Participants Last post by  capncrunch
I've got several FMA M5 receivers laying around here and they're damned good little (and I mean *LITTLE*) receivers -- the smallest and lightest full-range dual-conversion receivers money can buy in fact.

Naturally I figured that being so light, they'd be just the thing for my profiles, but there's a problem.

My Hitec Eclipse 7 transmitter dedicates channel 5 to the retract switch meaning you can't mix it for anything else.

The only mix you can have for separate aileron servos is on channel 6 -- not much good when you're trying to use a 5-channel receiver.

I have several options:

1. Forget about using the FMA M5 receivers and use the excellent Berg 5-channel units instead. The Bergs aren't much heavier and allow you to assign the 5th channel output to channel 6 (so you get 1, 2,3,4,6).

2. Use a Y-cable (yetch!) and forget all about using flaperon/spoileron mixes :-(

3. Buy a better transmitter that doesn't confiscate channel 5 for a function that few sports fliers actually need.

So here are my questions:

Does the Futaba 7C or 9C allow you to use Ch 5 for spoileron mixing and if it does, does it handle aileron trims properly? (a manual mix on the E7 results in only one surface moving when aileron trim is applied).

Would I really be missing much if I used a Y-cable rather than transmitter mixing to use two servos on ailerons?

What are most ProBros using for RC gear? What transmitters, what receivers, PCM or FM, etc.?
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xjet said:
Does the Futaba 7C or 9C allow you to use Ch 5 for spoileron mixing and if it does, does it handle aileron trims properly? (a manual mix on the E7 results in only one surface moving when aileron trim is applied).
yes. at least I KNOW the 9C does, i assume the 7C does, its a function you can toggle in the parameters section. and yes, trim works normally.

I run a 9C to 2 fut 127DF's, 1 hitec super slim 8, 2 hitec 555s, 1 berg 5, 1 plantraco 4.

I havent had any problems with any of them, except with one of the futabas, mounted basically in between two CF pushrods, lost about 30% range, but still no problems in flight.

-barrett
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