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T-28 Motor Swap - Park 480 1020KV

Old 09-21-2008, 04:53 AM
  #1  
RoadKingAl
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Post T-28 Motor Swap - Park 480 1020KV

Hi Guys I am new so please take it easy. I am already working with 2 electric conversion trainer Airplanes, 40 Alpha and a 40 Arrow. I am in the middle of my flight training. I still own a Park Zone t-28 with no electrics, it is brand new. I want to keep this around for fun.

The t-28 came with a unlabeled supposed to be a generic park 480 motor and a e-flight 25 amp ESC. I can do a simple change to a new eflite set up 25amp pro ESC and a Park 480 1020 KV.

This is only a fun plane and will be flown with my DX-7 Transmitter and a 6100 RX, Batteries are also set 2250 C30 S3 at 11.1V.

My toy is open to play, Suggestions, Sane - In Sane

All of my thanks to any and all suggestions
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Old 09-21-2008, 06:29 AM
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Tony G
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INSANE - I'm running a Power25, CC 45A ESC, 2500 3S pack with a DX7.

This thing is near unlimited vertical, and a hoot to fly. You'll need to reinforce the wings ( I CA'd mine to the fuselage) and tape down the canopy, but it is a lot of plane for the money you spend. And the cool thing is you can take all the stuff and put it into a bigger plane when you want to.

Stock motor mount as well
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Old 09-21-2008, 01:47 PM
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simibill
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Originally Posted by Tony G View Post
INSANE - I'm running a Power25, CC 45A ESC, 2500 3S pack with a DX7.

This thing is near unlimited vertical, and a hoot to fly. You'll need to reinforce the wings ( I CA'd mine to the fuselage) and tape down the canopy, but it is a lot of plane for the money you spend. And the cool thing is you can take all the stuff and put it into a bigger plane when you want to.

Stock motor mount as well
I'd say insane is the operative word.
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Old 09-21-2008, 08:40 PM
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RoadKingAl
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Post Re T-28 upgrade

The Stock motor and ESC do not work. I purchased this plane with the thought of using some of the items I do already have. The 3S 2250 30C batteries and my radio DX-7. I was looking for some other examples of better motors I could use in this plane. I am not sure how to read and compare motors. So I can not use stock and need to upgrade to a new power source. A Power 25 is a bit much for me, how about a upgrade from a park 480 one step. Or a change to a new power system.
Is it worth it YES / NO
I do not want to stay with the e-Flite line.
Is there a less costly line available with a better customer service

Thanks to all
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Old 09-22-2008, 01:47 AM
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Tony G
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Originally Posted by simibill View Post
I'd say insane is the operative word.
He asked for it.

It's fun to fly, and that's all that matters.
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Old 09-26-2008, 04:39 AM
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Short answer, yes, do a motor upgrade. Longer answer, no, don’t use the E-flite Park 480. Here are my thoughts why:

The stock setup in the T-28 puts out 200 watts off a TP 2200mAh V2 25C 3S lipo battery and a 9.5 x 7.5 prop, using my watt meter. The all up weight of this setup is 2 lbs which equals 100 watts per lb, not bad, but not great if your looking for more performance.


The E-flite 480 Park motor specs says it has a max output of 275 watts using the same battery, a 10 x 7 ~ 12 x 6 prop. Keep in mind mine has yet to be installed in the E-flite P47, so I’m going off the specs sheet, not a watt meter. The Park 480 requires also requires a 25A– 40A ESC, but you can use the same battery above or the one you mentioned. At 275 watts your only getting 137.5 watts per lb, for $69.99.


The E-flite Power 10 puts out 371 watts using the battery I mentioned above and a 12 x 6 prop which would yield 185.5 watts per lb off my watt meter. I’m using a Thunderbird 36A ESC with mine, but the specs say it can run off a 35A- 40A ESC. At 150-200 watts per lb you enter what E-flite calls unlimited performance. Well, I can say I am very, very happy on this setup. All the power I want is there and I didn’t have to glass the wings, run carbon spars etc. The Power 10 was an easy swap, no drilling extra holes etc. The CG was spot on too, so no nasty tail weight was needed. The power 10 was $74.99 at my LHS. Spend the extra money and you’ll have no regrets.


Another thing to consider is the application of this power. The plane is fast, but not unmanageable and I don’t have to program any expo into my radio to fly it either. You will need to be careful with your throttle control, don’t use wide open throttle for more than 15 seconds at a time and make sure you let it cool down a bit between max bursts. I get an easy 11 minuets of mixed flight time off the Power 10 setup and 15 + when I just use the power to gain altitude then glide down. The battery gets a lot hotter with this setup, but I haven’t any issues with swelling etc. My Eagle Tree V3 flight thingy has been replaced by the manufacturer and should be here in a few days. After I install the flight data logger I’ll know rpm, esc temp and battery temp.


As a side note I will say I’m not happy with my Castle Creations Thunderbird 36A ESC. On several occasions it does not allow the motor to run up to full rpm off a fully charged battery. My solution was the tried and true, unplug re-plug in the battery and then it works. Not sure why this is happening and I have doubts as to its overall reliability, so I’ll change it out next month when I have the cash to do it. I will say I exclusively use CC line of ESC, all Phoenix’s, except this one and they all have been rock solid.

Let us know what you decided to do.

Cheers,

Brian

Last edited by Bad_B; 09-26-2008 at 04:43 AM. Reason: grammer/spelling
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Old 09-26-2008, 04:51 PM
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RoadKingAl
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Well thank You Brian;
Seems like you have completed a very in depth objective research program that is a great help to me. I also have been told that the 10 is a drop in, where as the 480 needs to be modified as you have found out. I think I will start looking at a Scorpion motor option for a duplicate to the e-flite 10.

Again Thanks Very Mutch,
Al
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Old 09-26-2008, 09:48 PM
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Al,

No problem, just trying to give back to a site that has been so helpful to me.

Best of luck,

Brian
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Old 09-26-2008, 10:05 PM
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They suggest 3014-18: http://innov8tivedesigns.com/Scorpio...18%20Specs.htm
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Old 09-27-2008, 03:38 PM
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RoadKingAl
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Originally Posted by Dr Kiwi View Post
Thanks, Doc...... Nice Direction

Al
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Old 10-29-2008, 08:53 PM
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For what it's worth, I upgraded to the park 480 in my trojan, stuck with the std 25amp pro esc and parkzone prop, and the performance was much better than stock. It was well worth the upgrade, and very easy.
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Old 10-29-2008, 09:05 PM
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did you use the std mount with the park 480 ? i use a 3s 1800mah lipo would the std 30amp esc work with this config ?
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Old 10-29-2008, 09:10 PM
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Originally Posted by mgb View Post
did you use the std mount with the park 480 ? i use a 3s 1800mah lipo would the std 30amp esc work with this config ?
Your battery and ESC will be fine.
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Old 10-29-2008, 09:11 PM
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sorry, will I need a new mount ? (spot the newbie !!)
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Old 10-29-2008, 09:14 PM
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I don't know about the mount. I'd expect the 480 to fit with little modifications.

Otherwise the rest of the gear (ESC battery) are compatible.
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Old 10-29-2008, 11:03 PM
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rgf1046
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Originally Posted by mgb View Post
sorry, will I need a new mount ? (spot the newbie !!)
Yes, you'll need a new mount, as the Park 480 is a shorter motor than the std. motor. There is an aluminum mount available that pushes the motor out further from the fuselage, so the cowl will fit correctly.
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Old 10-29-2008, 11:25 PM
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You could use small spacers made from nylon or aluminum. Lowe's and Home Depot sell such things under the brand "Hillman". I use this method regularly to mount even big motors.
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