A lots of doubts about my first big plane.

[psantaana]

Hello:

I'm new in flying giant planes. I would like to bild my first big plane with a gas engine and I have a lot of questions.

I'm thinking in an Extra 330 26% ( http://www.camodel.com.ar/modelos/e...30-26-30ing.htm ) with a CRRC-PRO 45 cc engine ( http://www.rcuniverse.com/market/item.cfm?itemId=282834 ).

Do you think it is a good combination? Do you have any comments about the plane or the engine? I live in Argentine and this engine is a very affordable option (U$S 320) and comes with electronic ignition and muffler. I saw that a DA50 or a Zenoah are much more expensives and my budget is really small.

The plane also needs 7 high torque servos (7-8 kg at least). I was looking these ones from Hitec but I can't evaluate the diferences:
HS-755HB: http://www2.towerhobbies.com/cgi-bin...?&I=LXGLN4&P=7
HS-755MG: http://www2.towerhobbies.com/cgi-bin...?&I=LXMYH3&P=7
HS-805BB: http://www2.towerhobbies.com/cgi-bin...&I=LXN610&P=ML
Could somebody explain me what are the diferences and wich one is better?

I have a Futaba 6EXAS radio with a FM receiver. Do I need to go to a PCM receiver? The radio came with a 4.8v 600 mA NiCd receiver pack, will I need more powerfull bateries? Is there any problem with the receiver and the current used by the bigger servos?

Thank you in advance...

Pablo.

[Lowkey3D]

Instead of those big 1/4 scale servos. They are large in size and weight.
They will not fit in a standard servo mounts.

I would recommend the Hitec 645, since you are on a budget .

http://www2.towerhobbies.com/cgi-bin...?&I=LXUZ89&P=7

[rede2fly]

i agree the 645 will do the job, but as far as the motor i think you should read the threads about this motor here on the giants.there are now a couple of manufactures that are making this size motor,some better than others. before you make your choice do a search. you can find most of the answeres here on this great site, if you do a search. almost any question you have about giant scale and gas motors and rc in general. welcome and good luck in your quest

[luv2flyguy]

I agree about the servos, go with the 645MG. I have used them in 27%-30% planes with no problems, they will work fine if you're not into heavy 3D flying,as far a the batteries goes I would not use the ones that came with the radio. A good inexpensive way to go for your first big bird is the Nickel Metal Hydride, check with Dave Thatcher at Radical RC for switches and your batteries. Just my 2 cents, I would maybe shop on the Swap shop here for an engine, you can pick one up at a good price that will be very dependable. Hope this helps

[dubd]

I'll also chime in on the 5645MG servos. They are great for that size plane.

[MrKiwi]

And as for your battery, you are better off using a 6volt pack. Maybe 1500ma. For motor, I would suggest a DL 50. They are clones of DA but just as good at a good price.

[GremlinX]

I think the guys have you answered, but I would not use that CRRC...

[porcupineace]

i would stick with a used DA50....you CAN get them at a good price....USED!

[porcupineace]

gotta admit...if you need help, this is the site to be on. Great inf, but read every thing and make sound choices.....this hobby/sport can really get expensive-FAST!just my 2bits...

[psantaana]

Thank you everybody for your answers.

Pablo.