What do you think about the Saito 150 in the Gee Bee?, Or should I stick with a 120 ?. Any comments would be helpful. Thanks

I flew mine with a Saito 180. It was awesome! Rusty

Did you have to add weight any where, and did you use the stock motor mount. Was your space from prop to cowl ok ?. Thank's Russman

They all seem to land like that. Remember that the original didn't fly that well, either! It's unstable in every axis.

A good landing is more luck than anything else, especially when flying off pavement. Patience is a virtue in this case! I bring mine in rather warm (not hot) in a relatively low, flat approach. Once you coax it into ground effect it can get pretty pitch sensitive. Then it's just a matter of riding it out until the airspeed bleeds off, grease it on the mains, then be prepared to dance all over the rudder to keep if from swapping ends when the tail comes down. A good landing is very rewarding. A bad landing can be very exciting. Most landings are 3-point (top of rudder, top of cowl, and a wingtip).

Mine had the Robostruts, my friends did not. They both landed about the same. I suspect they'd land better on grass than on a hard surface.

Rule of thumb: if it bounces when you set it down, plan to go around. Be ready for the torque roll when you hit the power. Trying to ride out a bad landing will almost always ensure that the wheels are sticking up when it's all over.

This is not an airplane that you can ever hope to tame, and that's most of the appeal. About the best you can hope for is to have fun when it's around, and consider getting another one after it's gone.

This isn't a problem with the kit design or the manufacturer. I don't believe that any Gee Bee of scale proportions can be expected to fly like a friendly sport plane, 'cause it isn't!

Gesh,

With all this 120 4 stroke talk is making me nervous. My wife was awsome enouph to buy me my GP GEE BEE and she bought me ALL THE SUPPORT STUFF.....Motor/servos/battery/reciever+crystal etc. (awsome isn't she????????!!!)

She bought the "SUGESTED" 2 stroke option....an O.S. Max 91 FX I have NOT found anyone flying this power setup.

Am I screwed on preformance?
Bad scale propeller?
Not good "minimal" flight cheracteristics?

Should I exchange my brand new O.S. Max 91 FX for a Saito 120 4 stroke?

I planned for a pitts style muffler for this jewel with the OS 91.......


Should I be concerned with this setup?
Please, suggestions.

Kevin

nobody???????[]

Sorry but OS 91 is like a joke for this plane. I have a YS 140 Sport and it is just enough, just. It does not have unlimited vertical, but pretty fast with a 16x10. As like with the other guys, each landing is another show...

But in the air.... it is marvellous.

Be sure to take lots of photos before maiden flight

Well no one said anything about a radial so I did it here are some pictures. I am waiting on a custom exhaust for it and she is ready to fly.

1.70 Saito 3 cylinder. looks good

wow..a beauty....but isn't she going to be nose heavy increasing the wing loading? How much heavier is that than a ys 140?

Engine (Only) Weight: 46.0 oz I moved the servo tray to the back so all the sevos are mounted behind the wing bolts and the battery and receiver is back there. I haven't CG'ed it yet waiting on custom exhaust... for your information never buy the custom exhaust after you buy the plane go a head and buy the exhaust about 2 week prior to buying the plane then you should have the exhuast when you need it...

Well I flew her for the first time today. Belive it or not it was tail heavy with the big ole engine on there. I am going to install a glow system on it and move that up some to get the CG correct. It flew good landing was a bit rough the robart struts really work well. I am going to need more rudder than suggested on low rates and more expo in the rudder in low rates. After I get the CG up front some more I think that will help.


My kelo exhaust finaly came in and it looks pretty good on there it sounds really good. The 16x8 master airscrew was a bit to much I ordered a 15x8 MA and I also ordered a 16x8 apc to try. I am only getting about 6600 rpm from the 16x8 it hauls it around pretty good but I should prop it down and get some more rev's.

Over all it did pretty well had to go around about 3 times it baloons up really bad on the turn up wind.

This thread's been quiet for a while. Well, I finally got my GP GEE BEE. Im putting a OS 120S-E on it, Got the robarts on it as well. Been kinda freaked out about this plane though, so many experienced pilots having trouble landing the thing. Ive flown the Kyosho Gee Bee without any problems, until the servo tray popped loose and ended up crashing it.[:@]
Do you guys still have your GP Gee Bee's? any new developments?
I wouldnt mind it flipping over after it lands... I just dont want it to eat it from 4 foot altitude and get it all jacked up.
I have a tendency to come in a bit hot with most of my planes...
Can you offer me any advice flying the beast?
Anything and everything will be of great help.
Thanks!

Yep, Pretty quiet lately...lets mix it up now!

OK UPDATE:

I DID choose the Enya 1.20 R series and I'm very very happy with it. It has great virtical and it came spot on with the CG with putting my 4 cell reciever just aft the center of the Fuse.

Flying is DREAM!!!! Landing has been fine. One just has to know that is has to come in close to stalling speed AND LAY OFF THE ELEVATOR AS SOON AS THE WHEELS HIT......I have to time it just right and BAM!!!..A PERFECT LANDING.

Of course...I have had the bouncy bouncy bouncy problem..once bad enough to power back up and go around again before I beat the heck out of oit.

The next landing after that was almost a 3 point landing...(but I suggest a 1 pont landing to coushin the hit of the landing gear...let ONE wheel hit first and let the plane absorb the impact to bring the other wheel down) OR Just bring it in medium-slow and "commit" to the landing about 12 inches off the ground..

The above is the best I can do with "my style" of landing this thing. This is now my favorite airplane currently and I'm GLAD I TOOK THE TIME TO DETAIL OUT MY MOCK RADIAL!!

Kevin

the plane looks GREAT!!!
WOW!
Thanks for the tips, I got a Pitts that you have to land like how you described. Glad to know it flies great for ya,
What was your final weight?

Final weight? Good question I'm going to have to go outside and put it on the scale soon. I just don't know. Whats everyone elses weight??

Kev

I havent finished mine just yet so I dont have my final weight but Im shooting for about 11 pounds or 5 kilograms... But I dont think Ill get that. Hopefully I wont get over 12.
Most people are weighing in around the 11.5 - 12 range, some of the gasoline guys coming in a bit heavier.
Ill post my final weight as soon as I finish it up.

my friend is building gp gee bee and is going to put the evolution 1.00 has anybody used this combo any help would be great

What do you guys think of putting an OS 1.60 2 stroke up front. It's only 4mm wider than the 120 surpass. I am thinking of getting a gp gee bee and would rather have it over powered than under powered. Plus I'de rather have more prop past the cowling. Tell me what you think.

Hi!
I have flown mine with a MVVS .91 twostroke and it flies fine doing big loops (100m diameter) and other manuvers. I use a 14x6 APC.
Mine is modified with pull-pull system (fishing wire) for elevater and side rudder and using a Tetta "Bubbleless" 500cc tank put next to the engine, under the cowl.
All servo gear is moved forward up to the firewall and original landing gear wheels are soldered instead of bolted together.
Aileron servos is Hs 225's instead of standard size servos.. and I 've mounted them inside the wing instead of outside as per plans, just for looks!
I've taken up lightening holes in the rear fin area, where the side rudder is mounted, to lighten the rear part of the plane.
With these modifications my GEE BEE weights exact 5kg.

Regards!
Jan K
Sweden

Airroy, I have a GP GeeBee with an OS 120 and robart struts. It weighs about 12.5 lbs and balances well without extra weight. The 120 flies it well with plenty of speed. You need the robarts because the stock wire gear is too flimsey but of course the robarts add some weight.
I would not recommend the OS 160 because of the extra weight. The wing loading is high enough at 12.5lbs. You will find you need to fly it onto the ground with some throttle. If you try to make an idle approach like you do with a typical sport plane you will be suprised at how fast the bottom will "drop out" as it gets slow. I have a 160, they are great engines, but they weigh something like 8 0z. more than the 120. If you want more power check out the YS maybe.?? DWR.

Thanks for your input guys. Much appreciated!

Airroy

Guys,

I got my GP Gee Bee. I also got a set of Robarts for it.

HELP !!

Any suggestion on how to get the wheel pants on with the Robart Struts?

Any help, suggestions, pictures, etc will be greatly appreciated.

Airroy

dwr,

I have seen some references in a thread somewhere stating that the instructions that came with the GeeBee Robarts said the springs need to be cut. I did not receive any instructions with my Robarts.

Did you cut your springs to soften the pressure?

PS How did you get the pants on / over the Robarts?

Airroy

Airroy,
To put the Robarts on you have to first mount them and then remove the C-clip from the upper lever and pull the pin. This will allow you to take the upper part of the strut off and fix the pants. You'll need a good pair of needle-nose pliers and lots of patience to re-assemble inside the pants, but it can be done. That's what Robart tells you to do. I also found that you can remove the bolt holding the strut to the wing mount allowing you to slide the whole strut in from the top, and then you should have enough room to move the Pant up the strut while you re-fix the bolt and nut.

As for the spring cutting, I read the same threads. I cut mine off by 1/4" as most said and found that it does "soften" the springs. I can also say that my second landing showed me why this was a bad idea. If you've read the threads on the Gee Bee you should know by now that landing is the biggest challenge. On my second landing all looked like it was going well until the plane abruptly stopped and flipped. The struts had compressed allowing the wheel pants to grab some of Mother earth which brought the plane to a sudden and complete hault. I had to buy new wheel pants and a new wing set (the struts were tourqued back through the wings!) So, I ordered up new original length springs and have not had a problem since, although I still get butterflies when landing. The stock springs might seem a bit stiff, but with the wing loading on the Gee Bee it tends to come down pretty hard.

Anyway, other than landing it's a real hoot...enjoy!

Steve

Getting ready to order one of these Gee Bee's from Tower. Has anybody flown this thing with the Evo 1.00 or OS 1.08? I want to build light and these engines seem to be in the right weigth range.