Extreme Flight E Yak vs Extra

[bosshoss]

I fly both. Off skis even.

You won't regret buying either. Read all the build threads and make your decision.

The Extra's batteries and battery choices are better. From TP2100 3cell to heavy 4400 3cell cheapies. And you can get away with making the Extra heavy for windy days. (ala 4400 cheapies). If you ever wanted to cut perfect straight lines with a little plane, this is the prescription. It is a chameleon of sorts, I have seen it in a lot of different trims. There is a lot of wing loading cushion to play with, and about 4 good motor choices to choose from, and fly with other stuff from other planes.

The Yak is the real performer, I bet it flies better than some of the 50cc Yaks offered in the last years. (I know so.). It is pretty darn close to the EF 87" and that is no easy trick. The TP2200 4s Xtremes rock. I flew the Yak on a 2500 Evo 3Cell and it is nice for scale-like aerobatics (no 3D), and park circuits. The only motor I have seen used is Chris' motor, and I could not even imagine a better choice.

I just wish i could keep the nice wheels spats on, our field with all the holes makes trash of them quickly. My Extra will be collecting dust while trying to tear the covering off of this one.

But Wayne has it right, buy both if you can. look for someone getting rid of an Extra because they bought the Yak. You won't regret it.

[Uncle Brett]

	Quote: Originally Posted by Stainless Skills
	I know that the hs-65's are great but is there a better servo for the rudder or ailerons? And even with the bigger Air Boss 45 Amp ESC and Torque 2814-820 500+ Watt motor do I need to get a 4S battery or will a 3s battery still give me super acceleration? What would be the best prop? I have a triton charger that I have used for my li-ions on a 30%, will this charger be fine for a li-po? I think it will but will I need a cell balancer and what on earth does a cell balancer do?

HS 65's are great little servos, you can't go wrong with those all the way around
Some people are running 3s TP 2200 Extreme batteries but most are running 4s. The props vary depending on the Kv of the motors and the battery used but generally from 12-6 to 14-7. This plane comes in at around 44ozs AUW and to get the power you need you'll be pushing a 3 cell battery pretty hard.
A cell balancer does just that, it balances each cell in the pack to within .002 volts of each other. Over time and usage, the voltage in one or more cells of a lipo battery will drift away from the other cells, especially if the battery is pushed to its limits. The more you charge/discharge that battery the more the voltage in that cell will degrade causing the other cells in the battery to work harder. At the least, the battery's life will be shortened and at the most the battery will catch fire. A balancer used when charging will monitor each cell and bleed off voltage of the other cells untill the low voltage cell catches up.

[Stainless Skills]

When I take a look at all the ultimate combos that include everything for the airplane they all give you 4 hs-65 servos.

But when I looked at the instruction manuel it looks like the airplane needs 5, 2 on ailerons, 2 on the elevators and one on the rudder.

Is this not the case? How many servo's should I order.

Are there servo's that are cheaper than the hs-65 that still give good performance on the yak?

[Wayne]

Only one is needed for the elevators.

[Freddy Warbird]

Go with the HS-65's. Don't compromise. Heck they are only $23.95. You will need four.

[Stainless Skills]

I looked and saw that the reccomended BEC only supplies 1.5 amps to the servo's and reciever. Is this correct? It does not seem like very much power but then I guess they are micro servo's.

[Freddy Warbird]

I'm running the Koolflight Systems Micro UBEC Available at RC World of Planes. It is a lot more robust than the Dimension Engineering Park BEC you are refering to. It will handle the needs of the Yak without a hick up. Supply in very limited, so pick one up ASAP. I have one on my ducted fan tigershark, and one in my Yak. The Koolflight Systems Micro UBEC's voltage is also adjustable. I love this little BEC.

[bodywerks]

I didn't care too much for how the Extra flew, so I would go with the Yak to do it again.

[Jaybird]

Your the first person I've heard of that wasn't blown away by the Extra. I sure was.

[aviti]

I have the Extra with the motor and ESC they recommend. It's a nice flying plane but I saw the Yak fly and it looked a lot lighter as far as wingloading. The Yak came out like 2 days after I got my Extra....I'd get the Yak if I could do it over again.

[Freddy Warbird]

I've owned both models. They are both very good flyers. In my opinion, the Extra is a better tumbler, and feels a little lighter on 3S than the Yak on 4S. The Yak on the other hand, flys straight lines better than the Extra. The Yak maintains a torque roll better than the Extra.

[bodywerks]

	Quote: Originally Posted by Jaybird
	Your the first person I've heard of that wasn't blown away by the Extra. I sure was.

It flew OK, but there was nothing about it that made it fly any better than stuff I already had. My mini Ultrastick hovers/torquerolls easier, all my fliton planes flew/fly high-alpha better and have way less coupling, and did rolling maneuvers better, IMO. It may have very well been in my setup or flying style, but if it takes more than 15 flights to get a parkflyer to fly right it just ain't worth it to me...by flight 16 it was up for sale.