warrenmiller11

anyone evre used these on a jet? i got an f-14 turbine jet in works and wondering if these are any good to put on the elevator/tailerons setup in the rear. they say it on the website it removes exessive load on servos and adds up a lot of torque depending on gearing.

Boomerang1

It looks like a standard type servo driving the gear train. Yes, you will gain torque but lose angular movement.
The servo will still only travel the standard movement, 120 degrees max? The output gear 30 degrees?

What's needed is the servo to be modified so it can travel round & round to drive the large output gear a reasonable
amount to gain angular movement. To control this you would need the feedback potentiometer on the shaft for the
large gear so the servo electronics know the position of the big, output gear.

You don't get anything for free, if you end up with 4 times the torque the output speed will be 4 times slower.

warrenmiller11

yes man thanx for the infos and youre correct theres is modifications required in the servo for this to work. they say we need to open servo and solder the leads to the potentiometer that is built in on the output shaft of thebig gear.

warrenmiller11

warrenmiller11

considering prettymuch all the high end servo move at 0.1 sec at 7.4 volts or what not, is it a big deal if say i triple torque with this per exemple and it moves only at 0.3 sec?? im new to jets only flew warbirds before so i dont know how much of a«high speed servo » id needed for the jets. thank you

Wclays

My Feedback: (85)

It looks like this thing sells for 240.00 to 300.00

They have a 900 oz Savox Servo for 140.00 This seems to be a much easier solution.

warrenmiller11

oh yea for sure on the savox servo 900oz cant go wrong with that. its just i like to flyem like i stolem just scared to put too much load on the servo if i yank the stick at 200mph

warrenmiller11

this is from the fej f-14 i guess thats the way to go in terms of taileron linkage setup

Wclays

My Feedback: (85)

I am sure if you yank the stick at 200 mph the servo is the last thing to worry about. Something else is sure to fail. The structural load at those speeds will cause other problems.

warrenmiller11

yeahh loll i figure i was kidding by the time its done disintegrating from unusual aerodynamic loads forget about the servo but all jokes aside you jet guys seem to be so smooth on sticks no minimum radius turns full thrust high banking? i dont get it its like driving a ferrari on idle whats the point??

ravill

My Feedback: (11)

Well, see, an F-14 is too draggy an airframe to make look like it’s a Shui piloted firebird.

And if you got an FEJ F-14 “in works”, we know you have money to, quite literally, burn. So it doesn’t matter what you do on the most heavily depended surface, ie the full moving stab.

And there are plenty of folks pulling hard on scale jets out there.

warrenmiller11

i wish it was an FEJ f-14 in works man, thats just a stock photo for linkages reference im working on a 1/10 avonds fiberglasse fuse version that needs lots of love still so no i dont have money to burn lollll but i do want something solid and yea im going to fly the nuts n bolts outts this thing when its done just like a navy powerdemo.

scoeroo

My Feedback: (9)

One does not yank on the sticks at 200 mph .........
Thats asking for trouble -
A simple 7990 hi-tech (programmable 660 oz for $134) on the elevators is more than ample , I use this set-up on my F-5

ravill

My Feedback: (11)

Your Avonds F-14 is 182826272826728 times better than an FEJ.

I wish you all the luck in the world! We love helping each other!

And when you are all done, I bet you won’t be attempting 200 mph square loops with your F-14!

LGM Graphix

My Feedback: (22)

Why complicate things? Full flying stabs exist on tons of jets and there are servos out there that have existed for decades that are more than capable. The firebird at 300mph doesn't need more than a 400oz servo to power its stab and that is both halves on one servo! In your avonds F14 that added gear takes up precious space which you'll already be tight on.
Between this, wanting to make the spoilers functional on your wings, wanting to have radio programming that can sweep your wings at a certain speed etc I think you're way over complicating an already complicated and heavily loaded model.

I would keep it simple and light. If you haven't flown jets before I also would not suggest you start with this as a first jet no matter what your past experience is.

Just my opinion.

warrenmiller11

thank you guys for the kind words i appreciated. and yeah when its all said n done with all the money and effort i bet i wont yank at it at 200 not even a bit. fuse is a plug for now build from heavily corrected avonds plan and short kit. will make molds and panel lines rivets all that. i went to university in mechanical engineering in the aerospace division being specialized in propulsion but i quit that after two years now im in flight school going for my commercial pilot license and so far i flew cessna 152 here in montreal canada.