Hey guys
Ive just about finished building an 88inch extreme flight Extra300, it says in the manual it should come out at 16 to 17 pounds depending on setup. Im running a dual 3600mah nmh battery setup and am running a DL50 on the front with a 22x8 menz carbon prop. Ive always wanted to put a smoker in one of my planes so I threw one of those in as well and when I weighed the plane, it was just a tad over 18 pounds. Ive already bought all the gear for the plane, so my question is simply,"will it perform well for precision flying, or would it be a little heavy"?

Piggy!!

Im no expert but i think it will fly awesome for IMAC,

It should be fine for IMAC. Approximate thrust calculation on the 22x8 at around 7000 rpm gets you around 20# of thrust.

Thanks for the replies Fellas.
I thought it would be fine. If I find it a little lacking I gues I could wack a pipe on it and see how that goes?

Thanks again....

it'll be fine for basic but that's about it. You could probably do Sportsman but it would struggle.

You will want a pipe for Sportsman... the plane flies great, but you need the extra power in Sportsman. Ask me how I know

Thanks for the replies guys. I guess the best way to tell is to fly it and see. Sounds like yours was a bit lacking in power Jake... What did yours weigh in at Mate?

Just shy of 18.5 pounds.

It's not too bad unless it's windy, also for some of the more advanced unknowns the power would help greatly.

I'd have to agree, 18.5 is gonna be tough on sportsman with the upline rolls. Basic should work. Maybe also switch to a 23x8 prop. Jake would know well. He has one with a Berrelli 60 (I think that's the size) on his and it struggles in Sportsman but it does do it. Energy managment is gonna be the key at that weight. Be at full power before pulling a line going vertical or at 45 degrees

You could probably drop 1/2 pound by going to a set of smaller batteries or just going to one would net you more even weight loss. You really do not need two in there for the flight system. A single A123 at 2300 would give you roughly 8 - 10 flights, probably around 6 to 8 if you are hammering on the plane pretty good but you can recharge them in 15 minutes or less depending on the charger and you may eve nget more than 10 flights but I would not push it, it all depends on flying style and the servos being used.

The JetBlack batteries run around 6 or 7 ounces for a 2300MaH versus the almost 10 ounces for your current ones. I use 2 in my 35% Comp-Arf 260 and after 5 flights I've only used at most 580MaH on the one with the rudder and around 450 without the rudder (2 A123 2300 batteries, 2 recievers, rudder on one receiver, throttle on the other, plane is split down the middle otherwise)

The ignition also has a A123 2300 on it and I get around 15 flights and use around 1200MaH. It's a DA100

All but one battery is up in the nose. The other is right over the wing tube

So staying with two batteries:

yours are roughly 10 ouunce each so that's 20 ounces
Jet black at 7 ounces is 14 ounces

Save 6 ounces

Now remove one of yours and lose 10 ounces, remove one of the Jetblack and save the original 3 from the difference between yours and the jetblack plus the jetblack itself so you are still at 1o ounces.

If you need the second one for the smoke pump, you may be able to use a Li-Poly for the smoke pump if it can take it, that alone is a huge savings. I seem to remember a typical 2100 Li-Poly being around 4 or 5 ounces for the 11.1 volts version, less for the 7.4 volt version. If the smoke systems is a sullivan then you can use either voltage of LI-Po though it preferes the 11.1

Thanks for those replies fellas.. Well I test flew this plane yesterday and I have to say, WOW, so solid, and surprisingly had quite good performance, pulls uplines easily, good enough for me anyhow.. Although I will be taking the smoker out, although it looks awesome, leaving a big thick smoke trail," WHAT A MESS"... I couldnt emagine the airframe having a long life if its getting smoke oil on it all the time.. So I think by taking out the smoker setup and if I wack a pipe on it performance would be pretty good... Thanks for the input...