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Gp Ultimate Bipe - 6/15/2002 3:14:39 AM   
DUHAWK49



Posts: 235
Joined: 12/23/2001
From: DAVENPORT, IA, USA
Status: offline 		I AM CURRENTLY GETTING THIS PLANE TOGETHER AND AM WONDERING IF THERE ARE ANY POINTERS OR TIPS I SHOULD KNOW ABOUT. ALSO WHAT WOULD A GOOD ENGINE CHOICE BE FOR THIS PLANE. IT DOESNT HAVE TO BE A SCREAMER BUT CAPABLE OF SOME TRICKS.. ID LIKE TO HEAR OF WHAT PEOPLE HAVE ON IT AND HOW IT FLIES.. THANKS

_____________________________

IF IT FLIES STRAIGHT I AINT FLYING IT!!!
       Post #: 1

Gp Ultimate Bipe - 6/16/2002 9:37:37 AM   
ilikeplanes


 

Posts: 1058
Joined: 3/30/2002
From: portland, OR,
Status: offline 		I built a flew one of these a long time ago. I liked the kit a lot. The only thing I did different was to beef up the wing strut mounting points. Use extra plywood pads where the screws go. The idea is to spread the load for rough landings and the like. Oh yea, I used 1/2-20 nylon bolts for the bottom wing and landing gear. Glass the lower wing to 1 inch beyond the fuse side.

I only used a OS 91-4C and it was great for standard aerobatics. It would knife edge easily but not do a knife edge loop. No 3D, of course. I have heard of people use huge engines on this plane. If you use a light weight engine, it will literally float down to perfect three point landings. You'll look like a pro. You can also fly low, slow, and close-in. I bet any 120-4C would be even better than the 91 without much more speed on landing. The YS 90 would also be good. No use using a 2 stroke. It just aint right for a bipe.

You will absolutely love this plane. Once you get it properly trimmed for aerobatics, it will be a pure pleasure to do all the aerobatic maneuvers. I learned a many new tricks with it.

(in reply to DUHAWK49)
       Post #: 2

Gp Ultimate Bipe - 6/16/2002 9:43:02 AM   
ilikeplanes


 

Posts: 1058
Joined: 3/30/2002
From: portland, OR,
Status: offline 		Oops, I thought we were talking about the CG Ultimate.

I think the biggest challenge with the Great Planes Ultimate is keeping the weight low. It is quite small for an aerobatic bipe. I am using a Saito 72 in a GP Extra and it's great. This engine would also be good in their Ultimate. Again, watch your weight.

(in reply to DUHAWK49)
       Post #: 3

My GP Ultimate - 6/16/2002 10:30:51 AM   
SunDevilPilot



Posts: 427
Joined: 5/3/2002
From: Mesa, AZ, USA
Status: offline 		I am just finishing my Ultimate and only made a few mods. The first of the mods was to change the bottom wing into a 2 servo setup. I did this because I did not like the idea of 2 torque rods and then 2 more linkages going up to the top wing. Sounded like a great combination for flutter. My second mod was to add a Pull-Pull setup for the rudder (Yet to be installed). Finally, I changed to tailwheel to a Ohio RC type (Can use a sullivan also). I did this because I have never liked the hinge type tail wheel setup.

I also put an O.S. .70 Surpass II up front
Cowl is from Stans Fibertech

Phil (Mesa, AZ)

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(in reply to DUHAWK49)
       Post #: 4

Pic of the front of the plane - 6/16/2002 10:31:38 AM   
SunDevilPilot



Posts: 427
Joined: 5/3/2002
From: Mesa, AZ, USA
Status: offline 		Just a shot of the cowl and some of the plane.

For more info on this plane I started a thread at this forum.

http://www.****/forums/showthread.php?s=&threadid=2436

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< Message edited by SunDevilPilot -- Jun 16 2002 5:39AM >

(in reply to DUHAWK49)
       Post #: 5

Gp Ultimate Bipe - 6/16/2002 4:21:22 PM   
Hisham



Posts: 870
Joined: 2/13/2002
From: Beirut, LEBANON
Status: offline 		I am in the process of building the fuselage these days,
almost finished the two wings.....
Was also looking for a color scheme.....??? (still searching)
Almost finished the upper and lower wings... Planning to use
two servos for the ailerons and a Magnum 80 FS engine....
will keep you updated....
So far so good!

chk this link
http://webpages.charter.net/rcfu/KitReviews/GPUltimate.html

Regards
H

(in reply to DUHAWK49)
       Post #: 6

Gp Ultimate Bipe - 6/18/2002 9:53:27 AM   
Hisham



Posts: 870
Joined: 2/13/2002
From: Beirut, LEBANON
Status: offline 		Didn't find any reviews about this kit!
The only one in the previous thread.....
Have anyone seen an online review...???

DUHAWK49
What is the stage of building you reached??
Rgrds
H

(in reply to DUHAWK49)
       Post #: 7

ULTIMATE - 6/18/2002 10:05:51 AM   
DUHAWK49



Posts: 235
Joined: 12/23/2001
From: DAVENPORT, IA, USA
Status: offline 		WELL IM ON THE FINAL BUILDING STAGES OF THE KIT. BEFORE I CAN GO MUCH FARTHER THOUGH I NEED TO FIGURE OUT WHAT ENGINE I WILL BE USING IN IT. BEEN TOLD THE BIPES DO BETTER WITH 4 STROKE ENGINES SO I THINK I WILL TRY TO GO THAT ROUTE. MAYBE A 61-70. HOWS YOURS COMING ALONG?

_____________________________

IF IT FLIES STRAIGHT I AINT FLYING IT!!!

(in reply to DUHAWK49)
       Post #: 8

skeleton - 6/27/2002 6:40:46 PM   
Hisham



Posts: 870
Joined: 2/13/2002
From: Beirut, LEBANON
Status: offline 		needs some more work and will be done with
the wood works...

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(in reply to DUHAWK49)
       Post #: 9

another one! - 6/27/2002 6:42:29 PM   
Hisham



Posts: 870
Joined: 2/13/2002
From: Beirut, LEBANON
Status: offline 		2nd pix

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(in reply to DUHAWK49)
       Post #: 10

Gp Ultimate Bipe - 6/27/2002 9:38:52 PM   
mscic-RCU



Posts: 965
Joined: 3/29/2002
From: New London, OH,
Status: offline 		My son has had one for 4 or 5 years now. He has an OS .46FX in his and it flys ok. Little under powered, but does outlandish tricks with it. Definitely change over to two aileron servos, we recognized that potential problem when he built his. By the way, doesn't fly well on one wing. He found out when he forgot the wing nuts on the top wing!! OOPS!!!

(in reply to DUHAWK49)
       Post #: 11

Gp Ultimate Bipe - 6/27/2002 10:08:21 PM   
MinnFlyer



Posts: 19989
Joined: 4/22/2002
From: Willmar, MN, USA
Status: offline 		I had one of these little beauties and it was GREAT!!! Put an OS 70 Surpass up front. It is the ideal engine for it. No mods were made on mine and the only thing I would suggest is to beef up the landing gear. Not the wood where the gear mounts... The aluminum gear itself. Two other guys and I had trouble with the gear spreading on anything but a perfect landing. I wound up putting a piece of 3/16 music wire on the bottom held in place with "J" bolts.

_____________________________

Mike B.
AMA# 42400 www.gettingairborne.com

"Those are my principles. If you don't like them, I have others." - Groucho Marx

(in reply to DUHAWK49)
       Post #: 12

Here is mine! - 6/28/2002 4:02:21 AM   
SunDevilPilot



Posts: 427
Joined: 5/3/2002
From: Mesa, AZ, USA
Status: offline 		I am almost done with the building process. I have all the radio gear in and just need to glue the wing hinges in. Should be ready shortly! I have an OS 70 up front so hopefully I will like the performance.

Phil (Mesa, AZ)

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       Post #: 13

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