RE: GP GEE BEE
 

John
If your went over 13lbs. This would be your problem. This is not that big of a modle to require a gas engine.
Mine came in at 12lbs 4oz with a saito 120FS only 1/2 oz at tail to ballance perfectly
It was clocked at 85 mph. thats fast enough. The stubby fuse and thin wings can not cope being to heay it becomes a patato with wings at low speeds prop used 15x6 no torque problem.

Andrew

RE: GP GEE BEE
 

I am thinking about putting a mvvs 1.60 gas in mine do you think that is to much engine for this plane

RE: GP GEE BEE
 

It took a few weeks to get over the crash and I have decided to get another Gee Bee and put the 120 FS in it. Everything about the kit from construction to the flying were great and worth the replacement cost for a new kit and engine. It is wating for me at the hobby shop. I will also go back to a smaller battery pack with the goal of balancing with little or no additional weight.

With the 30cc engine, the takeoff and flight aspects were great... the landing got me. Hopefully with the smaller/lighter engine, it will be a great flying and landing kit.

John

RE: GP GEE BEE
 

It Flies!!! It Flies!!!

Test flew the GP Gee Bee Friday. No problems found at all in 4 flights. Needed half throttle with Saito 150. Knife edges at high speed and low altitude are a thing of beauty.

Read the whole review in an upcoming issue of R/C REPORT Magazine

RE: GP GEE BEE
 

Larger Wheels

Hi all I hope all your GeeBees are flying good. Mine is flying great and a lot of fun. Here's a tip, last weekend I took the Gee Bee to another field. It was a little on the rough side and I had a little trouble taxiing with a couple of nose overs. I tried putting on larger wheels, 4 1/2" Dubro treaded lite wheels fit just fine. I only had to open up the wheel paint just a little. What a difference problem solved.
Just wanted to pass this on.
Have fun
Bruce

RE: GP GEE BEE
 

I noticed the range of motors in this thread... anyone running the .91 2 stroke? If it flies fine withthe 120-4.... let me know I am thinking about it....

-ty

RE: GP GEE BEE
 

Andrew:

I used the full recommended 5/8" U/D elevator w/ the 50% expo. and it works great on grass fields as the full 5/8" keeps the tail well planted during the landing roll out.

As stated in my previous post, I had replaced the 4" soft foam supplied tires with 4-1/2" sulliavn "Skylites".

Dick:

How where your "thorws" settup ? Just comparing notes.
;)
BRG.

RE: GP GEE BEE
 

I set them up as listed in the manual, on low rate, with a bit more on high rate. Never went to high during flight tests ands certainly didn't need to. Plenty as listed.

Make sure you balance it EXACTLY where listed. If you don't, it could get ugly.

RE: GP GEE BEE
 

Wanted to pass along some info: Robart is coming out with functioning landing gear for the Gee Bee. Part number: GPGEEBEE on the Tower site. Not yet available but soon.

Yak

RE: GP GEE BEE
 

At $130 for a set of landing gear, when available. Wonder if they can be installed after building or must be installed during the build.

RE: GP GEE BEE
 

GBR2, I looked at the manual online and the Robart gear look like the'll be designed similarly to the ones I have for my GP Ryan STA. If so, installing them on an assembled plane will be no problem at all.

RE: GP GEE BEE
 

Built one for a friend and flew it for the first time last week. It is powered with a OS 120 four stroke. Flys great, fast, aerobatic, just keep the speed up on landing. It seems to like being wheel landed rather than a 3-point. Elevator loses effectiveness at low speeds and higher angles of attack making landings touchy. Set up airplane per instructions and it required about 3/4 ounce of lead in the tail to balance. Could have moved the battery back but it was easier to mount a small piece of lead in the tail.

RE: GP GEE BEE
 

I have my kit sitting on the bench presently, and am wondering what to power it with? I want it to be light and a 4C. I have already picked up some HITEC 225 servo's .90 oz and 55OZ's of torque. I would like to really keep the weight down. I am willing to mount the battery in a box on the firewall if I have to. I like the weight of the SAITO 100 19.5 oz's,but am not sure it will have enough. I know the YS110 would be powerfull enough but your back up to approx 26 oz's, A 120 is about 30 oz's. Any feed back would be appreciated.
Thanks
Dave

RE: GP GEE BEE
 

YS 120 or a Webra 120? That is the question. I should have mine around the end of the week. Looks like it goes together real easy. Using this as a stepping stone to maybe finish my Hostetler R1 with a Saito 450.


Chris

RE: GP GEE BEE
 

After reading through this thread it seems to me that either engine would provide ample power. I would go for the one I thought was most reliable, I think dead-sticks with this plane might be a real hand-full. IHMO

RJ

RE: GP GEE BEE
 

I will be installing a thunder tiger 120 so I can turn a bigger prop. It should have extra power to pull out of a situation. I might have to rienforce some high stress areas. If anyone is interested, I will post some fly-by pics when I get them.

RE: GP GEE BEE
 

I really wanted to put a gas engine in mine but after reading all the above it sounds like the Saito 120 will be the engine of choice. I have 2 new Quadras sitting on the shelf and I wish I could have used the smaller one (it's a 35) in the GP Gee Bee - or at least a smaller gasser, something like a Zenoah 23, but even that sounds like it's too heavy.

On another note, has anyone considered using mixing to use the ailerons as flaperons to improve low speed performance on landing? Since the tips extend well past the ailerons I wouldn't think tip stalling would be an issue. Thoughts?

RE: GP GEE BEE
 

Not sure about the flaperons... interesing possibility.

Has anyone posted video of theirs flying?

RE: GP GEE BEE
 

Flaperons only work with full span strip ailerons. Will induce a tip stall with "barn door" ailerons.

RE: GP GEE BEE
 

You said you are running a saito 120 F/S. I have the 74" CMPRO GeeBee and I am putting a 120 ASP F/S, and am wondering about prop size, given the frontal area of the cowl?

RE: GP GEE BEE
 

I am at the point of installing the needle adjustment. I am thinking of extending it with cable to the opening in the cowl next to the fusalage. Does anybody have suggestions?
Gene

PS A 15 inch prop or bigger looks good. Anything smaller does not look scale.

RE: GP GEE BEE
 

Stab problems. I got my Gee Bee last night and while checking over everything I slid the stab into the fuse and noticed that the fuse was 1/4 bigger then the stab. Has anyone else noticed this? Also the tabs for my wing mount were broken off the leading edge as well, not a big deal I just noticed some wood floating around inside the wing bags. While cutting the canopy out it is very brittle and cracked several times around the cut. I am looking for ways to repair the fuse or stab I have another one of these coming on Monday and I think they are very well made I just think I got a problematic one. Any help would be great here.


Chris

RE: GP GEE BEE
 

I got my geebee from tower hobbies scratch n dent. It has some cracks in the fuse behind the cockpit and the cowl is chipped. The parts for this plane are very resonable. (I only paid 180.00 for it) I used monocoat over the crackes in the fuse. The wing tabs were also broken off. Just epoxy them back on. The gap between the stab and fuse can be filled from the inside with thick epoxy. I only had about a 1/8 inch gap on the top and on the bottom. it turned out nice. Ran the thunder tiger 120 2t today and it should pull this bird out of sight. Next week will be 1st flight. I will post pics when I get a camera. Hope this helps. Weight is 11 lbs 10 oz. dry.
Gene

RE: GP GEE BEE
 

GeeBee_r2:

Can you tell me how was the engine instalation any mods. needed for the TT , I think I'll be using this engine for mine but I'm not decided yet .

Will like to hear your comments on this combo.

thanks.


epc.

RE: GP GEE BEE
 

epc,
The muffler for this engine is a monster. You have to mount the engine at a 45 degree angle and extend the muffler out the bottom with a du-bro extention. Or you can put a pitts style on it. With this engine the plane balances perfect with no weight added. Just move your battery back a little.