Extremeflight Extra 300 EXP 48"

[nate428]

	Quote: Originally Posted by STLAV8R
	Do you have a flight recorder in yours? If so, I am curious what type of readings you are getting.

i used to have the flight log connected when it was in another plane, i will put it back in and check it. the main thing i learned was range isn't till its out of sight... its closer than i thought before signal deterioration. it might be next weekend before i get a chance to fly again.

[nate428]

	Quote: Originally Posted by leelee
	I am thinking of either adding a CC BEC from castle creation, or a small seperate flight battery. I was told that when you get above 3 cells it is best to run a CC BEC.

i think this refers to the type of bec. linear vs switching. for above 3s a switching bec (like the cc bec) is best, all 4/5s esc's i have seen are switching bec's. linear is suppose to be less noisy (rf interference) but is very wasteful with its reg to create a lower rx voltage. a switching is very effecient, is used in 4s+ esc's, but supposedly is noisy. the airboss 45 has a 3amp switching bec.

the bec's amp rating is another concern. most around this size of plane are 3 amp. if you have too much strain on the bec, it could have a brown out. the cc bec is a switching bec, 5-10 amp depending on the cell count.

i have used the thunderbird 54 for a few years with great results. its a linear 3amp bec usually pushing 4 hs-65mg/hb's. i usually have the motor draw 5-10 amps under max draw to keep the esc from over heating and shutting down.

my new esc is a switching 4amp bec, seems to be working fine. i haven't connected the flight log to see if the switching bec is causing more signal loss than normal. its probably going to be replaced before it fly's again, with another esc with a 3amp switching bec.

i think its a matter of checking the max draw from the esc and bec vs just saying the cc bec above 3s. just like giant scale, we need to know the max draw of our servo's/gear and know that the batteries/wires/rx/reg/etc can handle and deliver that power.

[STLAV8R]

	Quote: Originally Posted by nate428
	i used to have the flight log connected when it was in another plane, i will put it back in and check it. the main thing i learned was range isn't till its out of sight... its closer than i thought before signal deterioration. it might be next weekend before i get a chance to fly again.

No problem. Looking forward to your results. I won't be putting mine together until next weekend anyway. Still waiting on some parts/supplies from an order that was supposed to have arrived this week.

[xtraflyr]

Well I had a chance for a quick flight in between the wind gusts.. I really couldn't get it trimmed properly but the CG seems pretty good right behind the wingtube --at a 45deg. inverted climb it just kept going that way for quite a while until it arched out to inverted.

Left to right KE ,canopy toward me, it tucked to the gear just a bit,right to left there seemed to be no tucking..then again like I said it was pretty windy I'd say 15mph+!!

I did get a KE Loop on the maiden flight,which it did nice and tight.. The 80deg.elev.travel makes it fun doing straight down elevators!!

On my 2200mah battery I did a 6 min.flight and put 1600mah back into it. Not to shabby I would say,I'll be getting another battery in the 2600-3000mah in the future..

All in all it's going to be really fun when I get a less windy day!! Oh BTW I'm using just a 5ch.Spectrum Sport Rx and had zero problems with it no brown outs..

Bossier_Rob, Maybe your not getting enough cooling to the ESC ?? Again don't know if it could be a problem,just throwing it out there!!

[joshatapp]

This plane is AWESOME!!!! I got about 13 flights on mine today. I had 3 before today. My setup is 4 hs 65mg's with the the hacker a30 and an off brand 70 amp speed control with the bec built in. After all my flights today I am very happy with my battery and power combo. I'm running Hyperion g3 batteries a 2200 35c and 2500 25c. The great part is I have the 730 hyperion charger and can fully fast charge the lipo in 13 mins. after a 9 min flight.
The only thing I am going to change is add a castle bec to be able to get more out of my servos. My built in bec is only putting out about 5.3 volts and with the cc bec you can choose what the output is like 6.6 volts. That should pump up the hs 65's.
I would recomend a digital servo for the elevator but i'm hoping the extra voltage with help it out.

During one of my later flights when i was geting a little more brave i did have a "brown out" where on a down line hard snap with power on, I lost control. I held full up and left it at full power, within 10 feet of the ground it reconnected but I was only able to do a ugle stall but "landed" in the tall grass and didn't damage anything. That is also why i'm going to the castle bec.

I LOVE THIS PLANE!!!!!!!!!!!!!!
Josh

[KrisW]

I finally got my 4s 2700ma 30c pack from Thunder Power, charged it, and hooked up to the 2826-08 Axi w/13x6.5 APC . . .OH MY GOD!!!!!! This thing has STUPID power. The difference in thrust and rpm is ridiculous.

Can't wait to get in a few flights and compare the two packs.

[BOSSIER_ROB]

	Quote: Originally Posted by xtraflyr
	Bossier_Rob, Maybe your not getting enough cooling to the ESC ?? Again don't know if it could be a problem,just throwing it out there!!

I already looked into that early on. My ESC is directly in line with the cowl's lower inlet. Lots of air going over it. It's never been more than barely warm. I'm not sure what to blame right now. I wasn't planning on buying several Rx's and ESC's to get one plane acting right. I might just sell the damn thing and stick with foamies and 40%'ers. I bought this to have a fun little toy in my front yard, not to have a pain in my ass. lol

[STLAV8R]

	Quote: Originally Posted by BOSSIER_ROB
	I already looked into that early on. My ESC is directly in line with the cowl's lower inlet. Lots of air going over it. It's never been more than barely warm. I'm not sure what to blame right now. I wasn't planning on buying several Rx's and ESC's to get one plane acting right. I might just sell the damn thing and stick with foamies and 40%'ers. I bought this to have a fun little toy in my front yard, not to have a pain in my ass. lol

What RX's and ESC's have you tried with it that haven't worked so far?
What motor are you using?

[BOSSIER_ROB]

I listed everything in previous posts. I'm using the torque 820, airboss 45 and AR 6200 Rx with Hitec HS-5065's all around. I haven't tried anything else because it's all I have other than a couple of motors and esc's for foamies. I will not spend any more money on receivers and esc's trying to find what works. I'd rather sell the plane than spend more money on it. It's not worth it IMO. It's fun now and then, but it's no show stopping 3D whore. I think I'll just stick with the big boys. Anyone want to buy it? Less than 10 flights and only damage ever was the last flight that pulled the rudder off the hinges. Turnigy Accucell 6 charger and 3 Zippy 2200 4s batteries. Bind and crash!!! Make the right offer and I'll box it up and stick your address on it because I really don't have the patience to f with it anymore.

[hpapilot]

Rob, I'm sorry you're having such issues. This really should be a simple plug-and-play setup, so it's hard to say what's going on. I'm sorry you aren't able to enjoy this plane because once it's set up right and you get used to it, it really is a showstopper. I hope you can find a little more patience to try to solve the problem. It sounds to me like you may have a faulty ESC... have you tried checking the output voltage of the BEC under load? Forgive me if you've explained this already but 26 pages is a bit much to sift through at the moment.

RJ

[BOSSIER_ROB]

I don't have anything to check the load with RJ. I fly 42%'ers and just bought this for the front yard, so everything I have for electrics, I bought with this plane from EF other than batts and a charger. Maybe I'll call EF and see about swapping the ESC. Everything was purchased new through them as a package. I don't mean to sound like a douchebag, I'm just frustrated to the max. Like I said before, I don't hate the plane. It flies great and obviously will take a little punishment. Guess I'll go for trying another ESC before I get pissed, stomp it to toothpicks and swear off electrics for good. Thanks for all the advice guys. It IS appreciated!

[nate428]

if you have gone through 2 spektrum rx's im starting to think they are not the issue. my friend has that model and its never had an issue. maybe a way to tell if its a disconnect vs esc brown out would be from the binding. do you have it bound with throttle, so that on a disconnect it will still power the motor? if so did the motor stay on during your disconnects?

do you have access to a friends esc that would work in this plane to test?
you could also try the cc bec for $25 before buying another esc. if the radio stays connected and powers the servos but the motor stops during flight, it would be the esc shutting down and the cc bec keeping the rx powered.

my esc is mounted under the bottom of the motor cage, flat to it. is this where yours is? it has short power leads to the batt so i had to put it there. i notice mine is doing weird things after a 10-20 seconds of high power maneuvers... and takes a straight flight path for about 10 seconds for it to be normal again. i think its not getting good enough airflow even with the hole in the cowl almost directly on it.

sorry its being a pain in the ass, electrics normally are easy as plug n' play. bad equipment will always be a pain, no matter what size the plane.

[BOSSIER_ROB]

Nate I have my esc mounted just as you. I've never ran WOT for more than a few seconds while flying. When I bound the rx, I did it at idle with no power, and after set up was tweaked out, I bound it again. It hasn't done anything strange in any flight until the last one. I never lost power to the motor and servos always kept kicking. No hiccups at all, but both the rx and satellite rx would be blinking after landing every flight. I've run the power up on the ground before and got the blink. I've run it in bursts of about 15 seconds on the ground after swapping rx's and had no blink. Everything worked fine. Second flight later, it locked out with power off. I had the power off on a downline and lost it half way down. This was 2 minutes into a fresh battery. When I got to it, neither rx was blinking and esc/ motor was operational. Batt was still cool as well as motor and esc. This was the only time anything stopped working. I have no idea what it is. Thanks for the info

[EXTREME FLIGHT]

Team Extreme member Jens Van Dorpe from Belgium sent us this teaser video of his EXP. More to follow as weather allows. Great flying Jens!

http://www.3dcollege.be/videos/Exp_Teaser_W.wmv Right click here to save the video " title="http://www.3dcollege.be/videos/Exp_Teaser_W.wmv" target="_blank">http://www.3dcollege.be/videos/Exp_Teaser_W.wmv

://3dcollege.be/videos/Exp_Teaser_W.wmv

[ronnynorge]

WOW........