Tx out of trim

I have discovered that the last 3 of my regular models I have flown on my Futaba T8FG Tx have all required many clicks of up trim to attain normal flight. This includes turbine, gas, and electric. I can only assume that the Tx itself has either got a loose pot on the Elevator axis or it has come out of calibration/trim for some other reason.
What to do? I assume it could jump back or get worse if I continue using it.
Any ideas (and no I don't want to sell my soul to the devil and get a spektrum, and I have too much investment in Futaba Rx's to switch to JR) ?

I think your best bet is to get it fixed or buy a 2nd hand 8FG.

It probably is a faulty potentiometer.

I love my 8FG but when it does eventually die I shall probably switch to Jeti although the DS conventional layout rather than the Trays that Jay and Paul have. Lots of money but lots of power and telemetry posibilities too.

Im sure futaba would repair it or one of the specialists which I assume still exist it is probably also possible to source the pot and change it yourself.

futaba seem to be phasing out FASST in favour of the cheaper to make FHSS on the new stuff unless you spend lots of money on the likes of a 14sg

Im purposefully not buying receivers for my 8FG knowing full well they are going to be redundant relatively soon.

John

I would get it checked if you have any doubts, Mick Ridley is the man, based in Southampton.

modelradioworkshop.co.uk/contact-details/

I have a portable scope and a frequency counter that could measure the pulse width.

If you want to go that route, let me know and I will set it up.

JonTappin wrote: John

I would get it checked if you have any doubts, Mick Ridley is the man, based in Southampton.

modelradioworkshop.co.uk/contact-details/

thats him! I have heard good things: knowledgeable and cheap

Mick Ridley has some good products too, a servo reverser to solve that "Y lead" problem when you are using the same channel for both flaps and find that they go in opposite directions, on board glow systems etc. A very useful and helpful chap who knows his stuff, used to be in charge of service at McGregor/JR.

Regards, David

Email sent to Mike, thanks for advice - T14SG looks very much like T8FG with a few improvements & telemetry - maybe it's time to replace Tx anyway as it is 5+ years old. Shame if FASST is abandoned as I have found it to be totally reliable albeit a bit expensive on the Rx side!

before you get too carried away with the 14sg for telemetry to work you will need to buy new receivers. so you will end up replacing rx's the advantage is that the ones you have will work with with it but without telemetry.

I did look at the 14sg a while back but I think if you dont look at cost the Jeti is the way to go,

the ability to go dual transmission path with 2 rx's in a model the fact the regulators offer ability to monitor voltage of both onboard packs as well as output voltages plus all the awesome sensors MUI current sensors are awesome on electrics giving an actual mAh used plus the petrol/paraffin fuel flow sensors that do the same on big models wins the day.

dont get me started on telemetry controls!

but... just dont look at the price tag! whilst a lot cheaper than the top spec JR/futaba stuff its still a few quid!

I am all ears - but I do have 3 * 2014 Rx', 4 * 617's, 3+ Orange FASST jobbies. So I am going to get the T14SG (but not for telemetry) , and I will retire the T8FG to combat, EDF's, and junk but look at fettling it myself. I will then look @ more advanced systems with telemetry with an eye to controlling high value models and I guess Jeti is a big contender.
Futaba do seem a bit limited on the sensor front anyway and fuel flow and tank level sensors don't appear on the menu of available stuff yet!