Adapter Issue

[Stuart]

Okay,

I've a bit of a wierd issue. I run Futaba so we have that awkward square fit on the trainer port.

My second adapter kept acting up as they seem too with futaba so ordered a replacement.

Noticable differences.

Old one has a gold jack adpater and the neck of the wire has an harder outer rubber sleeve. New one is a silver jack adpater and the neck has no outer sleeve.

Old one the pins are rounded off while new one the pins are pointed.

Old slides in easily into the tx jack - new one tight as a fishes you know where!! so tight I daren't push any harder without knowing how the secure the jack is into the pcb board on the tx.

So I've two futaba's a 14MZ and a 6EX the old adpater when plugged into the tx would activate the trainer function and the tx would turn on...

Now zip happens infact nothing happens at all. This is the second brand new adapter both obviously have this new look and are over tight on fitting.

Now I got it to work on the 6EX with a wiggle - but surely something isn't right here with these new adapters. Yet to have any success with the MZ.

Is anyone else experiencing issues with the Futaba new style. Will take some pics and upload later.

[rotorwrecker]

Hi.Yes i bought a lead from a very reputable shop (so you think your safe)for my 7C and the tightness has destroyed the socket and possibly the board its on.Even when it did work you had to wiggle it which will have helped its demise.Its a cheap and nasty setup for that lead and the only reason i want rid of my 7C and will not entertain another futaba until those sockets have changed.Going to give spektrum a go and to be honest if i like the gear i cannot ever see me going back to futaba.Even my 7C has a real cheap feel to it compared to my old ff6.The adapter has silver jack and pointed pins.

Dave.

[DIJ]

I had the same problem with my 9C square plug, it was so tight a fit that it seperated when unplugged. my solution was to carefully file the connector down a little, and now its a good fit.

Depending on where you get the connector from, some activate the trainer function to power the TX, while others don't so require the TX to be turned on.

[Stuart]

Well having now taken the two apart I have decided to change over the plugs between the two adapters to fix my issue. Well that's the plan :-)

What I have noticed is that they are by the look's of things wired in reverse.

[squeaky pete]

think i got a futaba adaptor if you want it, ill never use it mate, can experiment on in. pm me if you want it

[heliphil]

from my experience there are two types of square plug that fit the Futaba socket - the original from Japan ( not direct from Futaba just an off the shelf item they used) which fits nicely and a new copy which is a tight fit and much lower quality from what I have seen.

IIRC RC World in wales has the original plug in stock ( unless manufacturer has changed as well) and I have got 8 or 9 left at home. I have swapped the plug overon a few Phoenix leads for friends ....

[Andy from Sandy]

I purchased the Futaba adapter with Phoenix about a year or so ago and the plug fitted nicely. When that failed I got another one which can only be a few months ago. It was very tight but I used it. That adapter didn't last long and when I opened it I can see it is made very poorly and the wire is too thin for any logevity.

I got one of these and changed the phono plug to a jack socket.

http://www.snelflight.co.uk/shop/sho...l_lead_ff9.jpg

The cable is more substantial coax and the plug fits the tx properly.

[Stuart]

Look's reversed but isn't...

Checked that the outer case goes to the middle top on both the old and new style.

[Dedcalm]

Top centre pin is ground and top left is the PPM signal from the Tx. If the bottom centre and bottom right pins are shorted together then it should activate the trainer mode for you when you plug it in

Hope that helps Stu

[xygax]

As viewed from the outside of the radio…

O1 o2 o3
O4 o5 o6

1=cppm out
2=gnd
3
4=cppm input
5= battery input (+)
6= battery output (+)

Just a little note... The FF0 and i think the 14Mz are using 5v logic the 12FG uses 3.3v logic so watch pluging traiberleads across between diferent types they need resistive attenuators in for a 12fg....

Steve

[Stuart]

Sorted swapped old onto the new adpater lead and now working a treat.

[Dedcalm]

FONT=Arial]Just a little note... The FF0 and i think the 14Mz are using 5v logic the 12FG uses 3.3v logic so watch pluging traiberleads across between diferent types they need resistive attenuators in for a 12fg....[/FONT]

Interesting point on the 12FG, looking at the Futaba Compatibility Table it would appear you might be correct...

Also appears that they don't do a cable that would be compatible although there would be a number of solutions to drop the voltage, diode(s), zener diode, voltage divider are all cheap and simple solutions to the low currents in the PPM signal.

[xygax]

Interesting point on the 12FG, looking at the Futaba Compatibility Table it would appear you might be correct...

Also appears that they don't do a cable that would be compatible although there would be a number of solutions to drop the voltage, diode(s), zener diode, voltage divider are all cheap and simple solutions to the low currents in the PPM signal.

There is a cable Ripmax - Trainer Lead w/Voltage Conv (12FG) from Futaba - P-TC-SQ7-2 that hes the voltage conversion for the 12fg. Bear in mind that to use a 12fg as the tutor it will need a step up from 3.3 to 5v logic.

additional pin info added
As viewed from the outside of the radio…

O1 o2 o3
O4 o5 o6

1= cppm out
2= gnd
3
4= cppm input
5= battery input (+)
6= battery output (+)

Steve