FMS 1400mm T-28 Trojan

[low pass]

I just got my FMS 1400mm T-28 Trojan built, it only took about 4 hours, and everything works as it should BUT the manual does'nt mention anything on what the high, and low rates should be. Can anyone tell me the recommended high, and low rates for this plane? FMS makes a nice plane but the instruction manual is in my opinion not very good.
Thanks,
Paul

[Bill]

Re: FMS 1400mm T-28 Trojan

The recommended throws for the FMS 1400mm T28 are in the online manual you can download from the MotionRC site for the T28 (under "support").
Elevator low: 8mm up and down.
Elevator high: 11mm up and down.
Rudder low: 19mm left and right.
Rudder high: 25.4mm left and right.
Ail. low: 10mm up and down.
Ail. high: 13mm up and down.
Flaps: 25.4mm full down.
Half flaps I use half of this down.

I have gone through setting up and flying V3 T-28 and now have some very important recommendations in my opinion:
1. The T-28 needs more elevator throw than the low setting at 8mm. You need at least 10mm for good control.
2. The CG in the manual is very wrong. If you set it up as recommended, you will be very tail heavy and not happy (I was lucky to just bend the nose gear strut on landing the wild tail heavy flight) . In previous T-28 forums here, the correct placement of the battery (I use a 4S, 3600), is way forward in the compartment. So far forward, that you have to cut out the foam at the front of the battery compartment (easily done with a sharp knife shaving away the foam gradually until you get to the floor of the battery compartment). This allows smooth perfect flight. The butt end of the battery should be at the back battery strap where the strap just fits over the butt end of the battery. The battery leads are forward. You can find a picture of this in previous discussions here on the T-28. This is super important for successful flight.
It is a great fun plane if you do the CG correctly. To find the previous discussions, click on my name in the forum here and it will direct you to my comments on the T28 i think.
Have fun.

[low pass]

Re: FMS 1400mm T-28 Trojan

Bill,thanks for the heads up, I'll make sure I check everything out, and print this as well.
Thanks Much,
Paul

[Tootall505]

Re: FMS 1400mm T-28 Trojan

I tend to disagree with Bills CG statement. I've had my V3 1400 T28's almost a year now and use 3000 and 3600 batteries. I place them in the stock position all the way forward with no cutting the foam tray at all, and it CG's almost dead level with both, and never tail heavy. I use the 85 mm CG point. All electronics like ESC, receiver, external BEC are positioned all forward above the nose wheel compartment.
The plane fly's dead level like its on rails. Now I will say I have bent a few nose wheel struts after a bad landing, but the plane will land on the mains first with a slight flare just before touch down then settle on the front wheel. It just takes practice. Everyone has their opinion on CG and you just have to find the spot that work best for your flying style. I just giving you my experience like everyone else..

Happy flying,
Chris.

[Carl Baldock]

Re: FMS 1400mm T-28 Trojan

G'day,I just checked my C.G and at 85mm I found mine nose heavy have to add about 20 grams to tail,I was wondering if you have heard of anyone else with my problem,everyone else seems to have to move there battery forward.i have the Fms V3 version

[ryramZ]

Re: FMS 1400mm T-28 Trojan

What battery are you using, and where are you putting it?

[Bill]

Re: FMS 1400mm T-28 Trojan

Carl,

I personally balanced my FMS V3 Trojan at 85mm CG. It flew very tail heavy
and went straight up. It was very bad.
When I put the battery forward as in the forum recommendations, it flew
very well. Also, another member of our club has two of the FMS version 3
T-28's. He put his batteries forward and they fly very well.
My personal conclusion is that the 85mm CG is not correct.
Motion RC has a later video of setting up the T-28 that calls for the
battery forward. You might google it and see their recommendations.

Good luck, mate.

Bill

On Sat, Nov 1, 2014 at 11:17 PM, Carl Baldock [via Motion RC Forum] <
ml-node+s1075610n5039h58@n5.nabble.com> wrote:

> G'day,I just checked my C.G and at 85mm I found mine nose heavy have to
> add about 20 grams to tail,I was wondering if you have heard of anyone el=
se
> with my problem,everyone else seems to have to move there battery forward=
.i
> have the Fms V3 version
>
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[ryramZ]

Re: FMS 1400mm T-28 Trojan

http://youtu.be/SPtZ1AB5Mig
Here's our mod vid which speaks to battery placement among other things.

[OV10]

RE: FMS 1400mm T-28 Trojan

Hello Paul(low pass),
I totally concur with Chris(Tootall505). I've got V3 and am flying with a 4000 40C Turnigy in stock location with leads to the rear which come around forward. Had to carve a little foam at the rear of the tray slot for this lead exit strategy. CG is at 85mm. This bird only required 5% up trim on my DX8. Level flight is hands off and inverted requires just a tad down elevator. This is my everyday punch holes in the clouds bird because it is a military trainer. And no gyro's are used(never will be). Elevator and aileron throws are at 15 degrees(don't believe in mm/inch settings), Flaps are 2 stage with 15deg half and 30deg full. The hard part about giving recommendations over forums is that the advise giver doesn't have a clue to the experience level of the individual asking for the advise. I have to believe with a bird this size that you must belong to a club. Get an experienced(warbird) person that you trust to help you out. I'm the warbird pilot in our club(and VP) with 10 aircraft. I have gotten several pilots past their fears of moving from trainer to warbird. Always look to someone with more experience to help, it will make you a better pilot. That's what this hobby is about - camaraderie !!
Best Regards,
Charlie

[Tootall505]

RE: FMS 1400mm T-28 Trojan

Hello everyone. I just ordered the parts to get my T-28 back in the air. After I crashed it last summer I've been missing it a lot. Been flying my mustang's pretty much every weekend and I come home and see the empty spot in my hanger LOL where my Trojan used to be, so I decided to rebuild it. Can't wait to fly it again !!!


Chris ( Tootall505 )

[retiredflyer]

RE: FMS 1400mm T-28 Trojan

Hello everyone. I just ordered the parts to get my T-28 back in the air. After I crashed it last summer I've been missing it a lot. Been flying my mustang's pretty much every weekend and I come home and see the empty spot in my hanger LOL where my Trojan used to be, so I decided to rebuild it. Can't wait to fly it again !!!


Chris ( Tootall505 )

Hi everyone,
  I'm just about ready to pull the trigger on the silver, USAF Trojan.  I opted for this as my dad was an Air Force pilot and learned on this very plane so I thought it would be a tribute to him.  He is 84 now and would probably get a kick out of me flying this.  Anyway, one question for anyone who has the V3, do both pilots come with this plane?  I want the ones that have the nice white helmets, not the other guy I see in some of the still shots.  Do I have to buy 2 of the helmet guys from spare parts or does it come with those?  Thanks.

[Tootall505]

RE: FMS 1400mm T-28 Trojan

Hi retiredflyer.  The answer to your question is yes. The FMS 1400mm T-28 V3 all come with 2 pilots. Both have white helmet's. The Airfield version only has 1 pilot. I suggest when you get yours that you purchase a external 10A BEC. The FMS speed control only has a 5A bec built in but the T-28 has 9 servos, 3 retracts and 5 LED's plus the receiver all powered from it. The 10A BEC will give you piece of mind powering all the electronics. I have one on All of my 1400 warbirds.

[retiredflyer]

RE: FMS 1400mm T-28 Trojan

Hi retiredflyer.  The answer to your question is yes. The FMS 1400mm T-28 V3 all come with 2 pilots. Both have white helmet's. The Airfield version only has 1 pilot. I suggest when you get yours that you purchase a external 10A BEC. The FMS speed control only has a 5A bec built in but the T-28 has 9 servos, 3 retracts and 5 LED's plus the receiver all powered from it. The 10A BEC will give you piece of mind powering all the electronics. I have one on All of my 1400 warbirds.

Thanks so much for the reply Tootall. Great news as I didn't want to get extras of I didn't need them. I just bought, still in the box, the Freewing P-51, do you suggest the additional BEC for that plane too?

[Tootall505]

RE: FMS 1400mm T-28 Trojan

Will it depends on what the freewing speed control has built in. I don't have any freewing planes so I'm not sure what they come with. My rule of thumb is if it has more than 5 servos and reteacts I would get a external BEC... 

[retiredflyer]

RE: FMS 1400mm T-28 Trojan

Will it depends on what the freewing speed control has built in. I don't have any freewing planes so I'm not sure what they come with. My rule of thumb is if it has more than 5 servos and reteacts I would get a external BEC... 

I never realized that could, or would be a potential problem. I would hate to lose my$280 plane due to a brownout or worst. The spec sheet doesn't say what amps the BEC is on the Freewing, although I suspect it might be a 5 amp. I will certainly take your advice and get an extra external BEC for my Mustang. Thanks.

[Lon]

RE: FMS 1400mm T-28 Trojan

Looking at the manual online for the Freewing P-51 ESC. I'm thinking the BEC would be a minimum of a 5a output.

[Tootall505]

RE: FMS 1400mm T-28 Trojan

Ya it's just a safety net. If for some reason your speed control fails in flight and the motor stops it could potentially turn off all power and you have no control. With the external BEC at least you have power to receiver and servos and some control to possibly land quickly in an emergency!!! I have Castle 10A BEC in all 3 of my 1450mm planes. Just be sure you follow the hook up instructions carefully. Hook the BEC power wires to the speed control connector at the flight battery, then disconnect the RED wire from the receiver connector and plug it into the bind port or spare channel port. 

[stitch]

RE: FMS 1400mm T-28 Trojan

i got mine together last night and i have a balancer it shows mine nose heavy bad i have a 4 cell 2650 in it. i was trying to take cowl off to check motor i took out screws and i still can,t get it off acts like it is glued in anyone know the secret to take it off?? i also wanted to adjust the air brakes they only open less than 3/8 in at full flaps! oh forgot on the air brakes on cowl mine worked backwards when i give it flaps the close when i turn off flaps they open up anyone had that problem?? i fixed it by using 2 servo reversers!

[Tootall505]

RE: FMS 1400mm T-28 Trojan

Hi Stitch, The CG on the T-28 is a strange thing. I say this because On my first 2 T-28's they CG'd perfectly in the stock position with a 4S 3000 and flew perfectly. After crashing them both doing stupid stunts I bought a new fuselage and used parts from both crashes ( left wing from one plane, right wing from the other ect..ect.) to build one plane.
But now it CG's nose heavy and I had to cut out the foam moving the battery all the way forward just like Pilot Ryan's mod video on Motion RC just to get it to fly right. I'm still baffled as to why but it seams more stable nose heavy. I use 3600's now which are heavier than the 3000 but it shouldn't have made that much of a difference, but it did. Who knows. As far as the stuck cowl thing, my new fuse was the same way. I think they put it on at the factory while the paint was still wet, but I got it off. I've never heard of the cowl flaps working backwards before, that's weird. Are you sure you hooked them up correctly?

Hope all goes well..
 

[gss]

RE: FMS 1400mm T-28 Trojan

Hi all - I just received my FMS T-28 a week or so ago and have been slowly getting it ready for its first flight. It seems like a great plane but I have a few issues:

1. Cowl flaps - mine operate in reverse. When the wing flaps are down, the cowl flaps are closed, and vice a versa. I can't understand why this would be unless the cowl flap servos are reversing servos or otherwise not electrically wired correctly - my connection to the receiver flap channel is verified. I've seen a few others post about the same problem but I've heard no answers explaining why it is happening, just possible workarounds: put the cowl flaps on another channel, add servo reversers inline, etc. These answers might be fine answers but it just bugs me that they work they way they do out of the box.

2. Chattery, noisy servos, especially the elevator servo, but to a lesser extent the wing flap servos too.

3. An aileron servo for which the servo arm in the homed position is angled at a 45 degree angle, obviously put on in the wrong position at the factory. It is tough to reposition given that the retaining screw for the arm cannot be gotten to without removing the servo (or cutting into the wing foam!).

Any advice is appreciated.

Thanks!
Geoff