[modified quote]ORIGINAL: FliteMetal

Ed: In fact, batteries can be plugged in anywhere within a circuit of servos to move power out close to the servo motor...

Mike: I didn't know that

Ed: I would power all the motors proportionally with the outboard on a seperate throttle mix from
the middle and inboard. This will permit you to dial in props for maximum thrust without having
to drive the RPM at the max.

Mike: Inboard and middle on one channel, outboard on another. I was considering going one step further: provide larger mah motor batteries to the inboard motors. It will reduce the likelyhood that I will come in dead stick. An additional minute or two of power on the inboard motors would add a margin of safety.

Ed: With the Futaba or Multiplex you can flip one switch and all the motors are ganged on the left
stick or seperate so you can dial in the best thrust.

Mike: Now that's the kind of information I wanted to learn.

Ed: I'll repeat myself...multiple receivers is not anything unique. However, the number of receivers
per chipping sequence block translates into bandwidth so you have more protection from other
systems within the 2.4 spectrum. Some brands have to have a second receiver to expand their
bandwidth.... I'll let you come to your own conclusion as to whom that is... : )

Mike: I have heard that before

Ed: Antenna placement with either a single or dual antenna was not of any real differential during
evalution. Understand this was a practical evaluation not based on optimum signal strength. It
was out intent to observe the system functioning at X distance without making faux assumptions
based on signal strength and not packet round trip results at the servos.

Mike: If I recall your evaluations results correctly, you tested at distances much further than I tend to fly although I do like to stay up quite high.

Ed: While this can get extremely technical and often has proven to end in arguments within RCU and
other threads on this subject...the typical resolve is for more channels with as broad a base of
channel servo functional mixes. Remember that servos can be controlled not only in direction of
motion...but distance moved...per program segment... : )

Mike: I like to avoid arguments. I asked for opinions and that is how I take read them.. just an opinion.

Ed: Bombay and retract doors are best opend and closed by mechanical function as a result of as few
a number of servos and channels as possible.

Mike: Again I have no experience with this so I value your opinion

Ed: Digital servos are individually programmable. This can permit a servo to travel X distance upon initial signal receipt then with the next step it moves to another programmed position.

Mike: I didn't know that either. I haven't used digital servos. I have a bunch of HS225BB servos for this plane. I will look in to a digital servo for the bomb drop if I add that function.

Ed: The above programming functionality falls into my previous reference to an If and Then function.
This is actual functional programming to provide exactly what is required with as few a number of
channels aka servos.

Mike: So what are the guidelines for using Y cabling? 1 channel to 2 servos? 1 channel to 3 servos? How far can this be safely expanded?


You're on the right track....
[/quote]

Thanks Ed,

I hope to have the B-36 back on its legs possibly today. It's my 32nd wedding anniversary today so I doubt my wife will let me work on the plane after dinner. I have today and tomorrow off work so perhaps I will get it back on its legs tomorrow. I need to add the new wing spars too.

Mike Roerig
[email protected]