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        Discussion The CopterX 200 Thread

#1 Gino CP Jan 10, 2008 09:27 PM

The CopterX 200 Thread
 
Now available, a smaller CopterX 450. Copterx 200.

http://www.ehirobo.com/shop/images/C...X200_KIT/1.jpg

http://www.ehirobo.com/shop/images/C...X200_KIT/9.jpg

http://www.ehirobo.com/shop/images/C...X200_KIT/6.jpg

http://www.ehirobo.com/shop/images/C...200_KIT/13.jpg

#2 sparx Jan 10, 2008 09:43 PM

I dunno Gino, I was hoping for better :(

Weight(without electronic parts):222g

That bothers me. Hurricane 200 is .... Flying weight: 230g ~ 250g (It may vary according to size of a battery pack and R/C gears.) .

You are looking at more then 350grams flying weight. I think that is going to be too much. Guess we will have to wait to see some videos from soneebee because that right there is enough for me to not buy it :(

SPaRX

#3 Gino CP Jan 10, 2008 09:49 PM

My thoughts are the same. But for most upright flyers (like me), this will be a backyard blast. As soon as Soneebee gets his going, I'm driving over to fly it. If he allows me LOL.

#4 sparx Jan 10, 2008 09:59 PM

Well I can't wait to hear how it goes.

At $99 bux that is a heck of a nice price.

I do not need a 3D monster, but I do like doing flips, loops and rolls. So I hope that it can atleast do that. But I really am doubting it. That is alot of weight under that small rotor disc.

SPaRX

#5 Heliman420 Jan 10, 2008 10:08 PM

interesting.........

#6 learninginverted Jan 10, 2008 10:46 PM

sparx- this is not related as i actually have a HBFP with M24s. I was thinking of trimming the blades abit to increase headspped as i decrease weight. I do want to fly agressively in the future, perhaps pull a big loop but i do know there is a mechanical link to disk area vs weight. Can you elaborate on that?

#7 Almaz Jan 10, 2008 10:50 PM

222g doesn't mean it's bad, it means you can fly outside and it'll be more stable. I wouldn't use anything less than 3s cells on it due to extra weight of the barebone. Probably we can use batteries from CP2/Blade CP pro. Canopy looks kind of ugly but other than that it looks very promising. Parts support will be the worse part of the helicopter.

#8 sparx Jan 10, 2008 10:54 PM

Not really sure exactly what you are asking there. Feel free to PM me rather then clutter this thread up with Off Topic posts.

Back on topic, I just can't help but say that I am just really disappointed with this. I had some really high hopes for it. But man, I am really hung up on the weight of the CopterX 200.

I was suprised to see a frame made out of AL. I was really suprised to see all the bulky AL parts on it as well. As I look at the pictures, I see so many ways they could have saved some weight. If this thing would have come in closer to 150grams, I think it would be a real winner.

SPaRX

#9 Almaz Jan 10, 2008 10:58 PM

By the way guys, HeliDirect shows Mini Zoom Pro V2 for $149 with brushless motor included but it is EP100 and smaller. Damn I know I don't need another helicopter :) but my fingers trying to enter the credit card.

#10 sparx Jan 10, 2008 11:05 PM

Alamz... i dunno man..

motor : ~30grams
ESC : ~20grams
Gyro: ~15grams
Servos: ~25grams
RX: ~10grams
Battery: ~50grams (this one is tough to figure but close enough for now)

Thats another 150grams. Looking at around 370grams AUW. That is some really high Disc loading there. That is amost a 50% increase in weight over the Hurricane 200.

Look at it this way... imagine flying a Blade CP on a 430mm disc instead of a 550mm disc.

#11 Gino CP Jan 10, 2008 11:05 PM

The kit has optional 200L motor, 30 amp esc, and 3S 800mah lipo. Looks like this heli is using brute force. the plastic main blades may be there for a reason. I see this not as a 200 machine but as a mothed 300. Is your glass half full? :p

#12 Almaz Jan 10, 2008 11:28 PM

Quote:

Originally Posted by sparx
Alamz... i dunno man..

motor : ~30grams
ESC : ~20grams
Gyro: ~15grams
Servos: ~25grams
RX: ~10grams
Battery: ~50grams (this one is tough to figure but close enough for now)

Thats another 150grams. Looking at around 370grams AUW. That is some really high Disc loading there. That is amost a 50% increase in weight over the Hurricane 200.

Look at it this way... imagine flying a Blade CP on a 430mm disc instead of a 550mm disc.


I hear what you are saying :) I used to have CP2 at around 320g AUW and it was flying like crap outside due to wind. 222g CopterX + 150-200g of electronics = Esky King V2 which cost around $80 for barebone. I was just checking videos on youtube and I didn't see any good pilots flying EP100-EP200 besides demo flight. I know for sure that I won't be able to fly such a small helicopter here in Chicago, it is always windy and it is almost impossible to fly small helicopter. I was flying my CopterX 450 a few days ago in 10mph and 20mph gust wind and it's not as noticeable as flying a small helicopter in 5mph wind and 10mph gust. I guess CopterX 200 would need a higher head speed around 4500-5000rpms to be able to keep in the air around 400g AUW. EP200 head speed 4000-4500rpm. The funny thing Ehirobo selling 200 but they don't sell yet any parts for it.

#13 Gino CP Jan 10, 2008 11:33 PM

They are working on the site as we speak.

#14 Almaz Jan 10, 2008 11:41 PM

I'm a little confused Ehirobo shows 2800kv motor and 11t pinion. EP200 uses 120t main gear 4800kv motor with 15t pinion and it allows 4000rpm head speed using 2 cell lipo. Using ehirobo configuration I get 2500rpm head speed. http://dhrc.rchomepage.com/calc.htm

#15 sparx Jan 10, 2008 11:52 PM

I noticed the same thing about motor Almaz.

The thing to about this is, you are going to have a screaming headspeed to keep it in the air and mobile. Higher headspeeds mean fast cyclic. When means a twitchy bird. And it will only be amplified with a heli as small as this.

SPaRX


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