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HelicopterAvant RC Avant Aurora - Mostro › Why does every component I bought hate the​E-Aurora??
10-06-2010 01:31 AM  7 years agoPost 21
ualdrivr

rrApprentice

Long Island, NY

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Sounds good Tom, If the weather holds up, I'm thinking to go tomorrow.

Have a three day trip starting Thursday, coming back Saturday night. The weekend weather looks great, I'm thinking Sunday definitely, are you game?

At the precipice, we change!
Team GrandRC

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10-06-2010 02:26 AM  7 years agoPost 22
stang281472

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Commack, NY

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Sunday should be good for me

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10-06-2010 07:53 AM  7 years agoPost 23
gotnoclue

rrApprentice

sydney

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stang, all my issues were tail related.
i had the TT snap in flight, older style, was made exactly to manual with the greatest care taken to gently slide it inside the boom (the original TT bend really easy as many would know) i posted about this on avants own forum and the response i got from them was i must have hit the tail on the ground, i fly to my skill level (with height) snapped about 30ft up doing elevator tictocs. clean snap as well pics may still be up in the thread i started.

tail pushrod ripped out, ill own up to it probably not gluing in properly but really dont like that design.

tail pickup gear stripped in flight, was lucky to get down without stripping completely, sold it 2 hours after that.

preceding this i had seen roll pins fail twice and the frames broke very light crashes, 50 bolts a side frame is really annoying.

the heli flew really well and when it was going it was probably the most powerful heli ive flown but i could not trust it so stuck with models i can.

i must admit they do seem to be addressing alot of the issues we had or that have popped up with this model which is great to see, prices are also alot cheaper than when i owned mine

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10-06-2010 03:27 PM  7 years agoPost 24
stang281472

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Commack, NY

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Gotnoclue,

I know for a fact they changed roll pins, Torque tube to better ones. I flew the original TT for 2 years and then just decided to put the newer version in since it was available. I am hard on the tail and it was fine. HOWEVER I did see one recently that had old TT and like yours snapped in flight which was the first one I had seen do this. Guess the original ones were hit and miss but new ones are MUCH stronger.

Did you have delays set in your gyro? Any TT heli needs some softening on starts and stops or you can rip gears.

The tail rod design works fine just need to make sure inner surface of tube is clean and use JB WELD.

The frames are actually pretty strong. I have seen Auroras (as well as other machines) go in VERY hard and not break frames and then on a crash that didnt look that bad manage to hit at a bad angle and break frames. Every crash is different. There are alot of screws on the nitro frames but not terrible.

Tom

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10-06-2010 04:50 PM  7 years agoPost 25
Justin Stuart (RIP)

rrMaster

Plano, Texas

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I cracked the right frame on my e-Aurora in a hard auto, but this was one of the original small battery frames. They have since upgraded the frames to allow for the use of larger batteries and also to reinforce the area I broke.

From what I have seen, the company is continually upgrading the helicopter based up feedback it gets from both its test pilots and also the general public.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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10-08-2010 10:28 PM  7 years agoPost 26
reverend_john

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Cordova, TN

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I am getting the avant e. I already have the set up but do you guys think that the scorpion hk4035 630kv is to big of a motor? I do have a hv110 speed controler to power that.

if I am not flying heli I am playing Golf

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10-09-2010 12:11 AM  7 years agoPost 27
Jason Bell

rrElite Veteran

California

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A 630kv is way too overpowered for a 12s setup. A 560kv is on the verge of being too overpowered, but people are running these no issues. Anywhere from a 450-530kv is optimal for good flight times, and still great power. Even a 560KV on a 10s set up is plenty of power.

AMain.com
Mikado "V Team"
Xnova Motors
Optipower USA
RCProPlus

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10-09-2010 01:23 AM  7 years agoPost 28
reverend_john

rrApprentice

Cordova, TN

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ok so i can use the 630kv. thats good because i already have it. in fact i have all the equipment for the aurora e with the exeption on the air frame. they are all ways out of stock.

if I am not flying heli I am playing Golf

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10-09-2010 01:33 AM  7 years agoPost 29
Justin Stuart (RIP)

rrMaster

Plano, Texas

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As Jason said, with the e-Aurora's gearing the 630kV motor will give you a headspeed around 2500rpm. The optimal headspeed for extreme 3D is closer to 2100rpm which is why he is recommending a 450-530kV range for a motor on 12S.

If you try and run the 630kV motor on 12s, you are going to have to run the ESC at around 70 to 75% or else your headspeed will be too high. Most ESC's want to be run near 100%, otherwise they overheat and lose efficiency (the Jive being the apparent exception).

Perhaps you can run your 630kV motor on 10s instead?

Avant RC
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10-09-2010 02:45 AM  7 years agoPost 30
Jason Bell

rrElite Veteran

California

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If you are running 10s, that 630kv with a 10T pinion on a Castle Set RPM mode, you can run up to 2000rpm, so it looks like it will work fine..On 10s, I wouldn't recommend using this on 12s

AMain.com
Mikado "V Team"
Xnova Motors
Optipower USA
RCProPlus

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10-09-2010 03:13 AM  7 years agoPost 31
reverend_john

rrApprentice

Cordova, TN

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would this batteries work? Thunder Power Pro Power "G4" 45C, 5S, 18.5V, 5000mAh Li-Polymer Battery. with this batteries i can run my speed controler at 100%

if I am not flying heli I am playing Golf

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10-09-2010 04:15 AM  7 years agoPost 32
Justin Stuart (RIP)

rrMaster

Plano, Texas

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Jason is the expert on the Castle Creations controllers and will answer your question about the percentage on the ESC. But as far as ThunderPower G4 45C battery goes, they are a very good choice. ThunderPower batteries are the best batteries you can get. The G4 45C are the lightest and most powerful available right now. ThunderPower G4 45C's are what I am running in my e-Aurora.

If you don't know, let me explain to you about kV ratings. A motor's kV rating determines how many rpm's you get per volt. So if you have a 630kV motor, and your battery puts out 1 volt, your motor will spin at 630rpm. If you have a 2 volt battery, your motor will spin at 630 x 2 or 1,260rpm.

Your Aurora has a 99T main gear and a 10T pinion. This gives you a 9.9:1 gear ratio. If your goal is a head speed of 2100rpm, then you take 2100rpm x 9.9 = 20,790rpm. So you want your motor to spin at around 21,000rpm.

With a 630kV motor, you then take 21,000 / 630 = 33.3V. The nominal (or average) voltage for a lipo cell is around 4.0V. But then you have to realize that you only get about 85% efficiency through your speed controller. So 33.3V / .85 = 40V meaning you need to put in 40 volts to get out 33.3 volts (the rest being lost as heat). So a 10 cell lipo will give you a nominal voltage of 40V. Therefore a 10s lipo with a 630kV motor coupled to the 9.9:1 gear ratio of the e-Aurora should give you exactly 2100rpm head speed at 100% on the ESC.

This is how you do the calculations, but just because something looks good on paper does not mean it will necessarily fly well.

Jason has done a lot of actual in-the-field experimentation with the e-Aurora using different battery/motor combinations. You should take his word as final on the best motor/battery combination for your helicopter.

But on paper and based upon my calculations, your choice looks very good.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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10-11-2010 02:11 AM  7 years agoPost 33
ualdrivr

rrApprentice

Long Island, NY

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Whats up Panos? Next time you are at field you can fly it
Well today, I did fly it. Tom, aka stang281472, was nice enough to let me fly his E-Aurora. That thing is a beast of power. Smooth, stable a bit too nibble on the roll rate for my taste, but again, it's Tom's heli not mine and he likes it that way.

Thoroughly enjoyed flying it though.

Thanks Tom.

At the precipice, we change!
Team GrandRC

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10-11-2010 02:29 AM  7 years agoPost 34
Justin Stuart (RIP)

rrMaster

Plano, Texas

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If you guys are running the new (larger) frames on your e-Aurora, do you by chance have some pictures you could share?

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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10-11-2010 03:41 AM  7 years agoPost 35
stang281472

rrApprentice

Commack, NY

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Panos

Glad you enjoyed it I like that very nimble feel but can slow it down a bit if you want to fly it again.

Justin

One of mine has the newer frames. Will try to get you pics tomorrow.

Tom

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HelicopterAvant RC Avant Aurora - Mostro › Why does every component I bought hate the​E-Aurora??
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