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Old May 19, 2003, 09:15 PM
Build A Rocket Boys!
PDX Slope Pilot's Avatar
Portland, Oregon
Joined May 2002
4,062 Posts
Potensky Cobra - How do you like it?

How do you guys like this plane? I have one on it's way from HL. It looks perfect for flying in a small area.

How does it compare to other aerobatic planes in it's class?

I'm looking for motor upgrade options too. Anyone using a MP Jet 25/26 in it? The stock Potensky motor and gearbox look kind of light duty.

I was also thinking of a Graupner S300 with a 5:1 MP Jet gearbox.

Thanks,

-Victor
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Old May 19, 2003, 10:12 PM
Giddy up!
Sal C's Avatar
Woodridge, Illinois
Joined May 2000
4,478 Posts
I love mine and yes it does fly well in a small area.

The only other plane I can compare it to is a Mini Laser 3D. It can't handle alot of wind but slows down nicely for "float" landings.

The stock motor does quite nicely, I planned on upgrading as well but the stock setup performs great. I'll wait til I wear it out before changing.
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Old May 19, 2003, 10:15 PM
Who Says Penguins Can't Fly?
aeropenguin's Avatar
Bay Area, California
Joined Jan 2003
2,713 Posts
I'm not sure if you've seen it or not, but ezone has one gigantisimo review on the plane, along with the eagle as well - two in one. Check it out!

-aeroP
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Old May 19, 2003, 11:06 PM
What Canary?
KeithK's Avatar
Huntsville, AL USA
Joined Jul 2000
1,743 Posts
Love mine too. I have an astro 010 with a GWS "A" gb and three ET-1200's. Very aerobatic, and having flaperons coupled with the elevator really allows it to perform yet still slow way down.

Not much to look at, but it sure is durable.
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Old May 20, 2003, 12:05 AM
Build A Rocket Boys!
PDX Slope Pilot's Avatar
Portland, Oregon
Joined May 2002
4,062 Posts
AeroP. Thanks. I had looked over the review, but wanted to get other opinions/experiences from flyers here.

I did a search and didn't come up with any recent discussions about the plane.

It must be a popular plane though. It is sold out at HL so a bunch of pepole (fellow Ezoners) are flying it.

-Victor
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Old May 20, 2003, 12:09 AM
Build A Rocket Boys!
PDX Slope Pilot's Avatar
Portland, Oregon
Joined May 2002
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Sal C.- What's the max. wind this plane can handle in your opinion?

Thanks.

-Victor
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Old May 20, 2003, 12:11 AM
Who Says Penguins Can't Fly?
aeropenguin's Avatar
Bay Area, California
Joined Jan 2003
2,713 Posts
well, I'd have to say that this plane is *not* very popular. There are a bazillion profile planes on the market out today, and in some sence, all fly the same.
Let me see, there is the:
HL prolife mustang and zlin
the Halapena
the Taco 2
the Cap T3D
soon, Todd's attitude
and, tons of people are just tracing a random side photo off the internet of their fav. plane onto a sheet of BluCor fan fold or Depron or Zepron, and cut it out. There you go, instant model.

Oh, oops, geting off topic, how did I get into profile planes?

anyway, I've heard just a little about this plane, and a lot of others seem to be grabbing a LOT more attention.

-aeroP
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Old May 20, 2003, 05:23 PM
What Canary?
KeithK's Avatar
Huntsville, AL USA
Joined Jul 2000
1,743 Posts
Don't forget MountainModels's Tantrum. It is still in Beta test but already has much more interest. I often fly with the MM test team, and can say the Tantrum does fly better than the Cobra, but I'd still rather have a Foamie like the Cobra to keep in the back seat for impromptu flying sessions. Why buy a profile plane when you can get a full fuselage plane like the Tantrum or Cobra?
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Old May 20, 2003, 05:47 PM
Professional idiot
Hampshire, UK
Joined Jun 2002
3,119 Posts
Quote:
Originally posted by vltrucco
AeroP. Thanks. I had looked over the review, but wanted to get other opinions/experiences from flyers here.

I did a search and didn't come up with any recent discussions about the plane.
Well over a couple of hundred posts on the subject during the last couple of months;
http://www.rcgroups.com/forums/searc...by=&sortorder=

--
Dave
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Old May 20, 2003, 06:28 PM
Giddy up!
Sal C's Avatar
Woodridge, Illinois
Joined May 2000
4,478 Posts
Quote:
Originally posted by vltrucco
Sal C.- What's the max. wind this plane can handle in your opinion?

Thanks.

-Victor
Victor,

It's hard to say but the AUW is 10 ozs so not much. My first flight attempts were in about 10 mph wind and the plane kept blowing around the runway. It flew in the 10 mph but not very fast. The gearing of the stock power system is so high that top speed isn't much, but it's desgined for 3d & hovering. To answer your question I'd bet I could do 15 mph max but it wouldn't be fun.
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Old May 20, 2003, 10:10 PM
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PDX Slope Pilot's Avatar
Portland, Oregon
Joined May 2002
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Thanks that info Sal.

I popped over to the foamies section and found quite a few threads. Guess I was looking in the wrong place.

I wanted a regular fuse too with the added durability of epp. The Cobra was the answer for me. I did see the the Tantrum video and that is one nice plane too.

-Victor
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Old Jun 02, 2003, 03:18 PM
Registered User
Helsinki, Finland
Joined Jun 2003
3 Posts
Creetings from Helsinki!! Just finished my Cobra, maiden tomorrow. Covey's review was a big help during construction.
He replaced carbon rods, why??
I put rods in the wing like plans showed.
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Old Jun 02, 2003, 03:55 PM
AMA 697691
Rochester, NY, USA
Joined Aug 2000
8,457 Posts
Quote:
gigantisimo review
Yeah, it was big!

Quote:
He replaced carbon rods, why??
I think our friend from Helsinki meant to say that I misplaced the carbon rods. It was just a screwup on my part from misinterpreting the diagrams. It still strengthened the wing fine and flies great!

I have made one mod. since my review to both the Eagle and the Cobra. I added some tiny carbon rods across the stabilizers in the tail. You could also use some carbon fishing line (called Fireline) to do this modification. This helps the tail maintain stability in harder maneuvers and higher winds. The plane just flies better!

If you break the stock gearbox, try the metal pinion gear replacement or go to the enclosed MP Jet gearbox using the same stock motor. Mine is still working great with the MP Jet gearbox.

Good luck!
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Old Jun 02, 2003, 08:50 PM
Build A Rocket Boys!
PDX Slope Pilot's Avatar
Portland, Oregon
Joined May 2002
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Greg-

Do you think a MP Jet 25/26 brushless motor would work on the Cobra?

Thanks,

-Victor
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Old Jun 03, 2003, 09:03 AM
Hey... watch this...
Mmarshall's Avatar
Herndon, Virginia, United States
Joined Feb 2003
787 Posts
I love my Cobra.. and dont think it needs a motor upgrade at all..

I run on Kokum 1020's 2s2p and it flies straight up at full throttle on the stock motor and prop... great little plane and I have flown mine in 15-25 mph gusts and it really does handle the wind nicely.

Mike
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