I am getting back into finishing up my GeeBee I got about a year ago
I was wondering how you folks set up or mufflers with the OS F/S 120
I have the 120 with the pump and this seems to be the only way I could
do the Exhaust for this engine.. I think it will be OK. not sure.
I just wanted to be sure from the experts
Thanks,
Jeff

As long as it will clear the belly pan on the wing i say go for it! You will love the way this plane flys. It is actually the most fun i had in years. The only thing i will warn you about is the wing is a little weak for the landing gear. So make you landings as soft as you can.

Thanks for the reply Sir !

Any other tips I need to know. I also have been flying the gee-bee on the g3/g4 for a while..

I notice that it wants to come in real hot. the plane does not like slow from what
I am feeling of it. YES I can not wait the fly this bad boy... I also want to know
if I need to cut the wheel covers a bit for grass. the grass is pretty short though.

Thanks Much!
Jeff

Out of all of the flight sims i have flown there is not one of them that models the geebee like mine flew. I had a saito 150 in mine and it was perfect. If you do a search for GP Geebee there is a thread that has all the info you coould ever want. If i were you for the first couple of flights i would fly it without the wheel pants as with grass they have been know to cause the dreaded GeeBee nose over.


Rich

Rich, I think I have one last Question for you

I have these Servo's... what area's would you recommend putting them in the Gee-Bee?

3- Futaba 9252 (91.6) oz tor. (from my old heli days) (fast servo) (digital)
4- Futaba 3004 (44.4) oz tor.
2- Futaba 3001 (33.3) oz tor.
3- older Futaba S28's @ (48.7) oz tor.
Thanks, and happy new year...
Jeff

I used 3004's all around in mine running on 6 volts. They seemed to be more than enough. I would say the would be okay even at 4.8 volt.

Thank You!

one thing to consider when using 6 volt packs is that you surely get more torque from the servo, but remember this, servos and gear trains are all built with 4.8 volts as the primary power........we then kick up the voltage to get more power from the servo with a 6 volt pack, and are getting it, but now we are asking the gear train to work much harder as well...............it's best to use servos that are meeting the torque needed to handle the plane in question. think about it, you spend how much on a nice scale plane like the GeeBee, power it with a superb engine like the OS1.20surpassIII w/pump, and do all the expert work it took to get it airworthy, and then take standard servos that most guys will only use for throttle control and try to make them something they are not by using a 6 volt pack?
i'd use no less than S9001's for that plane.......they cost a whole 15 bucks more than 3004's, have better mechanics not to mention superb centering, and will last you longer as well.

it's your plane, but for the investment you have into this, is it really worth saving 50-90 bucks by using servos that are best used in a trainer?

Yep, Your right.. I did find Another 9252 (4 total) witch is better then the 9001 and Digital as well.

I was thinking of putting TWO on the Ailerons. and the Other 2 on the Elevators.

Do you think that the 3004 for Rudder and Throttle should be safe enough?

Jeff

now you are talking..........the 9252's are what i'm thinking of buying for my future WW1 1/4 scale project.

i use a 3004 on my throttle for my current sport planes...have had no issues.
beings that i once flew pattern planes, we always checked each and every servo for centering accuracy. i do it by mounting the servo on a test stand, then i have a 7" (length here is not critical) stick which is mounted to a servo wheel and pointed shape at the far end that gets mounted to the servo. then i place a block with a pencil line on it right in line with the pointed end of the stick. then move the servo back and forth and let return to center......i do it both ways.............you would be amazed at what you find.
the 3004's i have now are good, but i can tell that they are not hitting the same stop when coming back to idle.

3004's would be fine on rudder though as well........you'll know if it is affecting flight or not.........usually never.

Groovy!!

I will say this if you look at the size of the contro surfaces, they reall are not that big. This is no 3D plane. Yes you can put overkill servos on it if it makes you feel better. Even though this is a model of a pylon racer it is really not fast at all. You will find on these forums that there is always someone that will have their own standards and criticise someone for the way they choose to do it. For anyones information i did not use a 6 volt pack for the extra torque i did it for the extra speed. Now I wonder if the servo could not handle 6 volts why do they even give a spec for this voltage? Or why can your reciever handle the same amount of power? I have found that all of the 3004's I use have been more reliable then a 3010 which have 28 more onces of torque than a 3004. The 3010's gear train is so more fragile. This is just some of my real world experience and just passing on what I read here on RCU.

Jeff if you are worried about the 3004's not being enough I would use your digitals on the elevator and rudder and use the 3004's for the aileronsseeinf how the tail will see more airflow.


Rich

it's not that the 3004's are enough, they just aren't that accurate which is more about why people buy the better than average servo.
3004's are great servos for trainers and such, but a 120 4S is going to bring the shortcomings of the 3004 to the surface right away...............they're already sloppy enough.

I am sorry. I thought he asked if what he had sitting around would work? I did not know he intended to fly pattern with this plane. As for slopy centering I have never been able to notice this in the air or on the ground in a plane. I have spent enough money on servos to make me wonder why i would do such a thing on a sport plane as there was no difference in flight.

now now guys. I appreciate both of your input and rich you have excellent points ,, I did ask for what I had laying around. and was not going
out to buy more servos for this plane. I did however find a fourth 9252 so It worked out perfect.

I can not express enough on how much help you guys have given me today! and even the info
I read on other threads, anyways, A HUGE THANKS TO BOTH OF YOU!

I also think that 3004's are great servos but was not sure how they would handle this HUGE Bird *lol*

Sounds like that you have been using them a while in the GeeBee and thats all I need to hear.

THANKS,
Jeff

The Other reason I wanted to try the digitals on the elevator is so they will be able the MIX better
With my Computer Radio. with-out using a Y adapter or a spacial Futaba box to mix the servos.
Jeff