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RE: Parkzone North American T-28 Trojan - 12/29/2011 2:22 AM   
ka9fax


 

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From: Hobart, IN, USA
Status: offline 		Sounds good will do, i had the wing primered last night. So today i put the silver on. All is good, no eating of the foam. anyone know of any type of filler than can be used on foam? i hv a few bad dings. If there is no good fix i will just live with it, i hv alot on my other t-28 just from transport. The foam is a little soft.
Tony

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RE: Parkzone North American T-28 Trojan - 12/29/2011 2:55 AM   
rsbabcock


 

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From: Visalia, CA, USA
Status: offline 		I use a product made by SIG called Micro Balloons - Filler Material.  I bought it at my local hobby shop.   You mix it with epoxy glue and add color with paint etc. if color is an issue.    It is sandable also.  I have filled many dings in my two T-28's.

Bob W6MWY.

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RE: Parkzone North American T-28 Trojan - 12/29/2011 3:33 AM   
ka9fax


 

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From: Hobart, IN, USA
Status: offline 		Thanks Bob, i will try that tomorrow or in the morning. I see your a ARO.
73, KA9FAX

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RE: Parkzone North American T-28 Trojan - 1/6/2012 12:42 AM   
rsbabcock


 

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From: Visalia, CA, USA
Status: offline 		I just installed a Power 10 BL outrunner motor, 1100kv on my T-28 and upsized the prop to 11"    WOW!!!! This bird rocks.  It will climb straight up and out of sight with the stock speed control.  It is not any more difficult to fly than with the stock motor.  Honestly, it was so darn fast that the tape covering the aileron servo wires on the undrside of the wing came off COMPLETELY.  When I taxied back, the aileron servo wire was hanging down on the starboard side.  This is a wonderful upgrade to an already wonderful bird.  I am going to convert my other T-28 as soon as a second motor arrives.  The best part is, it is a direct bolt up with not drilling whatsoever.  Less than $60  plus a larger prop and you have a super flying T-28.  I can't stop giggling, hee hee.

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RE: Parkzone North American T-28 Trojan - 4/21/2012 2:53 AM   
wing_nutt



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I NEED HELP.
After installing my radio gear in my new PNP T-28 I found that the motor will surge or pulse at full power. Also the motor is only pulling about 100 watts on a 3cell 20c lipo (that seems low). The servos were all working normal at that point i.e. no signs of glitching. My radio is a Futaba 8uaf with a Hitec 2.4Ghz module and a Hitec Optima 6 lite Rx. The motor and esc are stock. Any insight on this problem would be greatly appreciated.




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RE: Parkzone North American T-28 Trojan - 5/18/2012 10:15 AM   
downunderdog


 

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From: Sydney, AUSTRALIA
Status: offline 		I would guess that there's a bad solder joint between the ESC and the motor (one of the three phases has a bad connection), or a problem with the ESC.

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RE: Parkzone North American T-28 Trojan - 11/24/2012 1:29 PM   
guapoman2000



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From: Orlando, FL, USA
Status: offline 		Due to some very strange issues with my radio gear (Spektrum AR500) my Airforce T-28 Trojan has crashed twice as a direct result from radio not responding. I have thrown it away and gone back to Castle Creations BERG 4-Channel Super Narrow band DSP 72Mhz.

A few repairs to share with you all.... opcorn:













[SIZE="4"][COLOR="Navy"]She took to the sky again![/COLOR][/SIZE]
Photo Credit by David Hart



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RE: Parkzone North American T-28 Trojan - 11/24/2012 1:40 PM   
lbarnes


 

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From: de forest, WI, USA
Status: offline 		Nice repair, have done it myself.

Some of our club members have complained about there Spektrum stuff browning out.

After they crashed 2 planes each they went to Fatuba equipment.

I have 2, DX6I and have not had a issue with any of my planes or helis.

I use the value hobby 2.4Ghz 6 channel RX in about 90% of my planes (the $9 one) and fly just great. Only have 1 plane with a AR5100.

Check some posts in the TX section of this forum for Spektrum brown outs.

Keep up the good work.

Larry


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RE: Parkzone North American T-28 Trojan - 11/24/2012 2:28 PM   
Wheelnut



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From: Annandale, VA, USA
Status: offline 		Yep, nice work and thanks for the detailed pics, they are helpful for those looking for repair ideas.
I also had an AR500 go out and I destroyed my F4F Wildcat. I have noticed that I have never had a problem with my Orange Spektrum compatible receveivers. Now I have 90% orange and 10% Spektrum.

I almost thought this thread was dead.

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RE: Parkzone North American T-28 Trojan - 11/26/2012 9:10 PM   
dwilt72



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From: Frisco, TX, USA
Status: offline 		Does anyone know where I can find just the airframe (no servos, etc) for the original red and white Parkzone Trojan? I'm looking for one for my son-in-law for Christmas. I'm not finding much. I see the airframe for the Mustang, P-47, etc. If anyone even has the part # that would help a bunch.

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RE: Parkzone North American T-28 Trojan - 11/27/2012 1:25 AM   
WVrailfan



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From: St. Albans, WV, USA
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I let my teenage niece fly my Trojan. It was her first time flying and she was doing pretty good, just flying lazy loops around the flying field. At one point she was letting it lose a little altitude so I mentioned that she should give a little up elevator, which she had done several times. She must have pushed the stick forward because, from about 60 feet up the Trojan dove straight into the ground at about 2/3 throttle. It happened very fast!

At first I wasn’t too concerned, the grass is tall and cushions most impacts, I know from experience. I thought I would just be gluing it back together later that evening.

Then…we saw, smoke! We grabbed a couple of bottles of water and ran the 100 feet or so to where the plane had crashed. The crash damage really wasn’t that bad, but apparently it was hard enough to damage the battery or the crash caused a short because the plane was engulfed in thick smoke as the lipo consumed itself.

The lipo burned through the bottom of the plane, taking the ESC with it, but by keeping water on the rest of the plane we saved the motor, RX and servos.

My niece felt terrible about destroying one of her uncle’s planes, but I assured her, I had crashed that plane more than once myself and her crash was at least much more spectacular and scale looking than any of mine. So I no longer have a PZ T-28, I have finished wrapping my FMS T-28!

Jim




< Message edited by WVrailfan -- 11/27/2012 2:33 AM >

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RE: Parkzone North American T-28 Trojan - 11/27/2012 1:44 AM   
lbarnes


 

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Status: offline 		Now thats a crash worth talking about.

When was the last time you really crashed and had the smoke and fire to go along with it.

I dont think you will be fixing that one with some Elmers glue and tape.....

Hope you get over the loss of a great flying plane...

Larry

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RE: Parkzone North American T-28 Trojan - 11/27/2012 2:01 AM   
Wheelnut



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From: Annandale, VA, USA
Status: offline 		Is it possible that she forgot to kill the throttle quick enough and the amps shot up because it was trying to turn a restricted prop?

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RE: Parkzone North American T-28 Trojan - 11/27/2012 2:09 AM   
Wheelnut



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From: Annandale, VA, USA
Status: offline 		forgot to answer dewilt's question.
No they do not sell the airframe kit for the original T-28. Only the newer one. Sorry. The only other way is to buy all the pieces separately. Then you might as well buy a PNP or BNF

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RE: Parkzone North American T-28 Trojan - 11/27/2012 2:44 AM   
WVrailfan



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From: St. Albans, WV, USA
Status: offline 		I was already working on my next T-28, so the unexpected end of my PZ Trojan is a little easier to take. 

This is my FMS T-28 wrapped with Oracal polyester and vinyl film.  It flies great, a nice follow up to the PZ plane.

 

Jim

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RE: Parkzone North American T-28 Trojan - 11/27/2012 2:53 AM   
lbarnes


 

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Status: offline 		That is sweet.

Please tell me again in detail (I'm old) about the chrome covering. I have tried to cover many a plane using the Ultra coat chrome covering.

The biggest issue is if you get it too hot it will dull.

Please advise.

Larry

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RE: Parkzone North American T-28 Trojan - 11/27/2012 3:35 AM   
WVrailfan



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From: St. Albans, WV, USA
Status: offline 		I use vinyl and polyester self adhisive film used by sign makers.  I use Oracal brand, but I'm sure 3M makes the same stuff.  No heat needed, just cut to size peel and stick.  I have covered 4 planes like this and I am very happy with the results.  The film protects the foam in minor crashes.  It is a bit heavier than paint, but not by much.  I found the trick is to use very small pieces for the tight curves and wing tips, over lap working from rear to front.

Jim

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RE: Parkzone North American T-28 Trojan - 11/30/2012 8:53 AM   
guapoman2000



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From: Orlando, FL, USA
Status: offline 		Okay, going back to the PARK ZONE T-28 TROJAN!!!!

[SIZE="4"][COLOR="Red"]Lessons Learned:[/COLOR][/SIZE]

I highly recommend to check the AMP draw of the combined servo duty current draw and look out for higher than normal AMP draws. This is useful to detect a servo going bad and as in my case a Push Rod with a sleeve getting hung on the wire! All of which has the potential in losing your model (Crash).

I will be using my Watt Meter.
==========================================================

Okay guys!

[SIZE="4"][COLOR="Navy"]SUMMARY:[/COLOR][/SIZE]

My model has crashed twice citing RF loss (Spektrum AR500). I have investigated and found the possible reason!!! Can you believe that the Nose Wheel Steering Rod / Sleeve was not allowing the servo to move!! The Sleeve was getting hung on the metal rod itself like someone taking a HOT Hair Blower and heat shrinking the sleeve material! Of course that is just describing how it felt when I took off the Push Rod from the Servo and tried to push it myself by hand.

I bought the model used so, no telling...:

Anyway, I looked in my hobby drawer and found a Park Zone Replacement for the Elevator and cut to size for Nose Wheel Steering duty and all is fine now!!

However, my thoughts are that the BEC on board the Stock Switch Mode 30-AMP E-Flite ESC got overheated as a result from holding Full Right Rudder to perform Knife Edges and Bang, lower Voltage or Brown out and lost RF!

Okay a few pictures!










[SIZE="4"][COLOR="Navy"]Taking no chances, I opened up a brand new AR600 and it is working perfect! I will however, place the old AR500 in my Slow Stick and Observe it closely for any RF faults and which I seriously doubt I will have any issues.[/COLOR][/SIZE]


Business end:


Oh, my work with the Stock Motor!


[SIZE="4"][COLOR="Red"]FLIGHT SUMMARY:[/COLOR][/SIZE]
This morning my model flew for the normal 7 minute flight and did not notice the bearing noise that much since it is at the lower RPMs.

The model performed flawlessly and those Knife Edges all around the field was spectacular as usual. No brown outs or loss of RF!

The landings (A few Touch & Goes) were completely successful and no issues with the Nose Wheel Steering.

I will monitor the motor bearing issue closely...

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RE: Parkzone North American T-28 Trojan - 11/30/2012 4:58 PM   
hugger-4641



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From: McKenzie, TN, USA
Status: offline 		I've replaced several of those nose gear steering arms and never had to cut out the firewall like that, but I will admit it is difficult to get the push rod thru the arm. I do it by pulling the foam away from the back of the fire wall, pushing the arm down into the space, inserting the push rod, then spinning the arm around to fit up into the firewall. It is a jigsaw puzzle, but that firewall is so weak in that area, I'd be scared to cut any of it away. After I get the new arm in, I usually stuff an extra piece of foam behind the firewall to help stiffen it up.

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AMA -922698 Nomal people scare me, but not as much as I scare them...

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RE: Parkzone North American T-28 Trojan - 11/30/2012 7:23 PM   
guapoman2000



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quote:

ORIGINAL: hugger-4641

I've replaced several of those nose gear steering arms and never had to cut out the firewall like that, but I will admit it is difficult to get the push rod thru the arm. I do it by pulling the foam away from the back of the fire wall, pushing the arm down into the space, inserting the push rod, then spinning the arm around to fit up into the firewall. It is a jigsaw puzzle, but that firewall is so weak in that area, I'd be scared to cut any of it away. After I get the new arm in, I usually stuff an extra piece of foam behind the firewall to help stiffen it up.


Jerry,

Thanks for your reply! I tried real hard to get that Push Rod "Wire" out from the Steering Arm and it was just not going to happen without breaking the Arm! Therefore, I did what I did.

The model has made several Touch & Goes without any issues. Plastic Firewall is pretty strong and material take off was pretty small.

Thanks!
Guapo

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RE: Parkzone North American T-28 Trojan - 12/1/2012 11:50 PM   
guapoman2000



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From: Orlando, FL, USA
Status: offline 		here are a couple of pictures (some closeups) of my 3rd T-28 Trojan (my 2nd NAVY Trojan) Now I have 3 T-28's!!!!:p

As you can see it is in very good shape considering the amount of hands it has floated around!!!:popcorn:

This will be my Full Featured Trojan Ship with Flaps and perhaps Electric Retracts as I have a few in my hobby drawer! opcorn:























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RE: Parkzone North American T-28 Trojan - 12/2/2012 12:08 AM   
lbarnes


 

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From: de forest, WI, USA
Status: offline 		FOR FIREWALL MODS CHECK THE BELOW LINJ AND MORE

http://www.rcuniverse.com/forum/m_9238100/mpage_4/key_/tm.htm

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RE: Parkzone North American T-28 Trojan - 12/17/2012 12:59 PM   
guapoman2000



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From: Orlando, FL, USA
Status: offline 		Passed through 4 batteries for countless Touch & Goes that I wore out the Firewall and nose gear passed through a crack on the plastic firewall yet, the model still taxi okay back!

It was pretty good early in the morning but, I got there late and it was blowing pretty good, just look at the last picture showing the make shift Wing Sock!

A few pictures showing my new 808 Keychain Camera on the wing!

















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RE: Parkzone North American T-28 Trojan - 12/17/2012 11:56 PM   
hugger-4641



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Status: offline 		I just bought one of those 808 cameras myself, just came in the mail. I have it plugged into my USB port and I think the battery is charging right now. I have a slow flashing yellow light. Any tips on how to understand the instructions, starting the video, stopping, downloading?

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AMA -922698 Nomal people scare me, but not as much as I scare them...

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RE: Parkzone North American T-28 Trojan - 12/18/2012 12:10 AM   
lbarnes


 

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Status: offline 		I have 3 of them. Did you get the instructions???

The harddest to understand is setting the time and date stamp. It is easy once you figure it out.

Yellow light is charging. Light out is off. To start recording you press the button, yellow comes on and then goes out.

To stop recording press button again.

At least that is how mine work.

Larry

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