Mike Palko's Electric Mustang

I was down at Brodak's yesterday and saw Mike fly his new electric P 51. Very nice plane and flight. I have more pictures over on Stunt Hanger, but be advised I am no Elwyn!

[photo not recovered: 29268.jpg]


[photo not recovered: 29269.jpg]

Attachment #1, (jpg file)
Attachment #2, (jpg file)

WOW !!! Electric sure has come to fulfillment !

Pictures look great to me. Talk to Elwyn about photography when he is relaxing. He has taken so many pictures of planes I wonder how many he has discarded. I think only recently he has started using a digital camera. Tell him old DOC says hi.
DOC Holliday

Yee Haw!

When I see a full sized electric Mustang, I really do know that electric power has arrived!

Young Palko has had a great deal to do with moving electric stunt ahead. My hat's off to him and all the folks pushing the technology forward.

[photo not recovered: 28987.gif]

"Blessed are the young, for they will inherit the national debt." -Herbert Hoover

I was down at Brodak's yesterday and saw Mike fly his new electric P 51. Very nice plane


I'LL SAY nice plane! Please tell me:

Is this Mustang built from plans, if so, whose?

Foam wing or builtup?

Slab sided fuse? Capped with?

Thanks, guys. And Yes, the electrics blow my mind also.

That stab looks huge, definately a dedicated Stunter and not a Semi-Scale.
This could be a trend setting plane! BEAUTIFUL!!

Love the mid-mount wing w/o dih.

I'm curious about the plans also. (4 a glow version?)

As I understand things, the Mustang is a copy duplicate of the Mustang that Dan Banjock built several years ago, a Bob Hunt design.

I judged it today, and it (and Mike) flys really well. Presents well, too.


See Ya

Peabody

www.gscb.us / www.richpeabody.com

It's a geodesic wing. Open bays, covered in silkspan. It's the Bob Hunt P51 Dan flew for years with the rudder cut down some. Mike adopted the design for electric.

Hi Guys,
First off I have to thank Bob Hunt for inviting Dan Banjock and myself into his shop about 8 years ago to build the Mustang(s) you see here. Dan finished and flew his "Miss Suzy Q" from ~2002-2006. Little did any of us know it would take me 8 years to finish mine and that the piped PA .61 would be replaced by a motor and batteries...... You Reno fans will recognize her as "Bardahl Miss".

Motor: NEU 1907/2Y (inrunner)

ESC: Schulze 18.46K F2B

Battery: Thunder Power Prolite 5S2P 4000mah

Timer: Z-Tron V.4 (with needle valve)

BEC: Z-Tron (prototype)

Prop: Brian Eather 13x6 Yatsenko (sp?) copy.

AUW: 68.75oz

I only have 16 patterns on it so far, but she flew good enough off the board to bring it to the flyin. There are several trim issues I need to sort out, but it shows the most promise of any airplane I have built. I look forward to sharing more as I make progress.

Mike

\
>Motor: NEU 1907/2Y (inrunner)
>
>ESC: Schulze 18.46K F2B
>
>Battery: Thunder Power Prolite 5S2P 4000mah
>
>Timer: Z-Tron V.4 (with needle valve)
>
>BEC: Z-Tron (prototype)
>
>Prop: Brian Eather 13x6 Yatsenko (sp?) copy.
>
>AUW: 68.75oz
>
Nice work Mike.

Mike, tell me about the motor. How much does it weigh?
The batteries, Pro lite 5S2P4000? I didn't know they did a 4000. Mine is 4200. How much does that battery weigh?

I also see that you are using the Shultze 18.46 F2B ESC. Do you find that it breaks adequately in the wind?

The prop. How do you like it? I had Brian make those late last year. I find they work well, but need more pitch than they had coming out of the mold. The master was in wood, and worked very similar to a carbon prop I was using. When it was switched to carbon, the blade became too stiff, and doesn't "load down" like a wood does. If it seems wimpy, move up the pitch. Mine tops out at 7" for most of the blade, then tapers down to 5.5" at the tip.

Nice work, and I like the all up weight of 68.75ounces.

Hope to see it at the NATs.

Hi Paul,
The motor weighs ~8.75oz and measures 37mm long x 50mm dia. I don't think it has the power of the Orbit 30 you are using, but it is close. Steve offers a 1910 series that weighs ~10.625oz with a length of 44mm and the same 50mm dia. This motor would easily give you the power of the Orbit you are using and then some. The weights and measures do not include the optional fan, but they do include the optional 6mm motor shaft and larger bearings. (I chose not to use the fan).

The Thunder Power 5S2P 4000mah weighs 14oz with connector. They measure 2" x 2.5" x 2.75". I wish they made a 3700 that offered further weight savings!

I have not had the opportunity to fly wind above 6-8mph (at least straight air), so I can not comment on the governor yet.

Thanks for the tips on the prop. Of the 3 props I have tried so far the Eather 13.5 x 6 has worked the best hands down. I need to order several more and start repitching. I am running the stock 6 pitch, but clipped a half inch off after the first few flights. The handle/CG and prop were not set to give me the turn I was looking for, so I may go back to more dia. after some more trim flights.

Mike

> The Thunder Power 5S2P 4000mah weighs 14oz with connector.
>They measure 2" x 2.5" x 2.75". I wish they
>made a 3700 that offered further weight savings!
>
>
Do I read that correctly. Is it a 5 in series battery, at 4000 mah?

If so, that's 3 ounces less for only 200 mah less capability. Something to consider!

Yes you read that right, 18.5 volts. I am sure you know, but the dimensions listed are for the "brick" pack, which is not listed on their web site.

Mike

>
>> The Thunder Power 5S2P 4000mah weighs 14oz with
>connector.
>>They measure 2" x 2.5" x 2.75". I wish
>they
>>made a 3700 that offered further weight savings!
>>
>>
>Do I read that correctly. Is it a 5 in series battery, at 4000
>mah?
>
>If so, that's 3 ounces less for only 200 mah less capability.
>Something to consider!
>



The TP ProLite 2000 cells are probably the best available on the market as far as energy density.
These are the same cells that TP first hit the market with (but with higher C ratings than the original 4C-5C maximum) and as far as I know there is nothing better.

In fact the market is going the other way - heavier cells that offer lower energy density but higher power density.

But the 2000 cells are better suited to 4-6 C average discharge, so planes that fly from 10-15 minutes.
(Not just my opinion BTW, but straight from Charlie Wang, Mr TP)

The TP2100 cells are an excellent compromise between energy density and power density in the range of flight times that CL stunt uses.
If you look for higher rated cells they are all heavier than the TP2100.

Flight Power has some that look interesting, but you would have to discharge them more deeply (as a percentage) to gain a weight advantage over the TP2100 cells.
In effect trade off cell life (pack longevity) in order to get the better power density that newer cells offer.

Pat MacKenzie