RE: Does any body have a X-rotation mini helicopter ?  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       


MS Composit Hornet X-CP ARF w/Brushless Motor
Seller:  Erick Royer
Details:   $100.00   |  9/6/2008   |  Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> RC Helicopters >> Electric RC Helis >> RE: Does any body have a X-rotation mini helicopter ?
Page: <<   < prev  1 2 [3]

Login
Message << Older Topic   Newer Topic >>
RE: Does any body have a X-rotation mini helicopter ? - 2/11/2005 9:58:20 PM   
bdavison


 

Posts: 3334
Joined: 8/23/2004
From: Warner Robins, GA, USA
Status: offline 		You can always just buy the untethered version of the Hirobo XRB. I just got mine. It flys great. No problems so far with rotor blade striking rotor blade. It will hover right out of the box. If you take the time to read the instructions and adjust the gyro and linkages, the thing will hover hands free for about 5-10 seconds. If you want it to really fly good. Do these.

Balance both sets of blades PERFECTLY.
Make sure both sets of blades have the SAME pitch.
Adjust tracking until it is SPOT on.
Set the gyro correctly.

The more precise you do these four things, the better it will fly. Believe me when I say, if you balance it correctly, you can take off, and bring it to a hover 1ft off the ground, without ever touching the right stick. And you should be able to land it on a 3x5 card.

I cant see why anyone would buy the el cheapo version, when you can get a quality machine in the Hirobo one.

I learned a long time ago that you get what you pay for.

_____________________________

teamflyingcircus.com

(in reply to FlyingFish)
       Post #: 51

RE: Does any body have a X-rotation mini helicopter ? - 2/13/2005 8:40:06 PM   
warren52nz


 

Posts: 117
Joined: 6/20/2004
From: Auckland, NEW ZEALAND
Status: offline 		Thanks Bwanna. Those prices are a bit better than Star Fusion's where I bought my last parts.

http://gallery.bcentral.com/GID4941996DD255543-SiteMap.aspx

The parts are on that page all mixed up with other parts. I don't see some of the parts in the list though like the lower and upper mast assemblies. I'll send him an email next time I need parts. At the moment, all is good and it's flying brilliantly with my homemade blades.

I've ordered a new helicopter from Heli-World. It's a Century Hummingbird Elite Pro. It' upposed to be among the best 3D choppers available.

With everything, it looks like it'll cost me about $1,200 New Zealand dollars (about US$850). My experience with the XRB has convinced me that I'm in for the long haul with model helicopters so I may as well jump right in. And my wife is happy I'm getting an outdoor model because she's sick of having my XRB flying around her all the time.

(in reply to bwanna)
       Post #: 52

RE: Does any body have a X-rotation mini helicopter ? - 2/14/2005 4:57:36 AM   
R-Rudder


 

Posts: 131
Joined: 9/18/2004
From: , CA, USA
Status: offline 		The D5-2 has a very stable platform than the previous D5. You can do a stiff blank and small radius spiral downward turn without having blades striking. After 5 or 6 battery cycles, flying head-in, sideways is as easy as flying tail-in. Before flying straight line head-in, practice with a big "S-turn" head-in and gradually narrow down the "S-turn" to a straight line.

(in reply to warren52nz)
       Post #: 53

RE: Does any body have a X-rotation mini helicopter ? - 2/14/2005 12:01:03 PM   
humveecrusher


 

Posts: 165
Joined: 1/21/2004
From: Westerville, OH, USA
Status: offline
quote:

ORIGINAL: warren52nz


And my wife is happy I'm getting an outdoor model because she's sick of having my XRB flying around her all the time.



I hear ya Warren! My wife complains that the breeze makes her cold!...lol. It is winter here ya know. Guess that doesn't help with the breeze.

(in reply to warren52nz)
       Post #: 54

RE: Does any body have a X-rotation mini helicopter ? - 2/14/2005 12:03:10 PM   
humveecrusher


 

Posts: 165
Joined: 1/21/2004
From: Westerville, OH, USA
Status: offline
quote:

ORIGINAL: R-Rudder

The D5-2 has a very stable platform than the previous D5. You can do a stiff blank and small radius spiral downward turn without having blades striking. After 5 or 6 battery cycles, flying head-in, sideways is as easy as flying tail-in. Before flying straight line head-in, practice with a big "S-turn" head-in and gradually narrow down the "S-turn" to a straight line.



Hi R-Rudder. I take it that you have one of these new designs? I have been waiting to hear from someone who has one. Please give a report!


Thanks!

(in reply to R-Rudder)
       Post #: 55

RE: Does any body have a X-rotation mini helicopter ? - 2/14/2005 7:57:12 PM   
warren52nz


 

Posts: 117
Joined: 6/20/2004
From: Auckland, NEW ZEALAND
Status: offline 		Hi R-Rudder

Yes, I'm curious about the improved version. As it is, because I make my own blades, I can avoid blade strike by using thicker material. And the lift problems I used to have from thick blades are gone because I replaced the battery with a 1050 mAh one. Same voltage but apparently the original one couldn't maintain the voltage on the motors under load because it has almost twice the lift now and takes off at 1/3 throttle.

This makes recovering from rapid "falling" much better. I find these models are quite hard to keep at one altitude (especially with the new battery) and I sometimes find myself over-correcting when getting too close to the ceiling. The subsequent drop used to lead to a crash scene because the motors couldn't rev quickly enough to recover. It's much better now.

Undoubtedly, this puts a heavier load on the already under-rated motors but I cool them off after 2 or 3 minutes of flying and I'm seeing no degradation over time. Plus the motors only cost about US$5 and I have spares so I'm not too concerned about that.

A side effect of having more power on reserve is that I can use less pitch on the blades and still get lift off. And this increases the head speed and thus the stability thorough increased gyroscopic forces, presumably. And the motors seem to run cooler like this which also makes sense. Bottom line is, I strongly recommend a new battery. I bought the GWS 7.4V 1050mAh one. Don't have the part number here but you should be able to find it easily enough.

One caution here, though. The battery that comes with the model has over and under voltage protection. It shuts itself off when charged and when the voltage gets too low. You've probably seen your chopper turn itself off after a crash or when the battery gets too low. That's the battery doing that. My new one doesn't.... ever. So if you go this way, you'll need to buy a Li-Po charger. I'm sure you've all heard about the consequences of not charging them properly!

On my mdel, at least, the maneuverability is poor. Forward speed is about 1 metre/sec max. Rotation takes about 8 seconds to do a 360° turn. Backwards is much faster and side to side (aileron) is quite fast too. And, as you say, sudden maneuvers will cause blade strike especially on my thin (1mm) blades which I'm using because I've got a bunch of it in stock. At 30 cents each, I don't really care if I "munt" a pair of blades!

But it's amazingly stable. I'm already good at head in maneuvers, made easier by years of driving (fast) model cars. I just picture myself in the pilot's seat and everything else is automatic.

Anyway, this is all rather academic now as I've just ordered a Century Hummingbird Elite 3D Pro so I'll be moving to the "next level". Although I still see a place for my little XRB when the weather's poor.

Cheers from New Zealand
Warren Harding

(in reply to R-Rudder)
       Post #: 56

RE: Does any body have a X-rotation mini helicopter ? - 2/14/2005 10:31:27 PM   
bdavison


 

Posts: 3334
Joined: 8/23/2004
From: Warner Robins, GA, USA
Status: offline 		I think a longer main shaft, does fix the prop-to-prop strike problem. My new XRB(silver edition) does not exhibit that trait. Ive gone from full left to full right and nothing, and full backward to full forward and nothing happens. Ive done this with both the beginner flybar weights and the advanced weights. So far I havent been able to get the rotor blades to strike each other.

With the XRB(silver edition), forward flight (with the advanced setup) and lots of throttle, and full forward cyclic. It will travel about 4-5ft/sec, and will do a 360 degree rudder spin in less than a second. You can tune the gyro super-sensitive, and it will probably whip it around faster than that. From hover to top speed full forward takes about 1-2 seconds.

I figured out how to do a nose down rotating spin. Saewwwwwwwweeeet.
Cyclic to 1:30 and add left rudder to keep it tail up...to pull out, wait until its facing 90, cyclic at 12, full throttle, doing tail spins all the way across the gym. Mwuhahahahaha. It requires good timing. And if you arent good at nose in, dont try this. If you dont get the timing right its very easy to end up nose in and down with heli tilted right, and traveling left....very disorientating. Still freaks me out.

I havent tried it tail down yet..hmmm.. ....excuse me for a moment...gotta go try something

_____________________________

teamflyingcircus.com

(in reply to warren52nz)
       Post #: 57

RE: Does any body have a X-rotation mini helicopter ? - 2/14/2005 11:12:00 PM   
warren52nz


 

Posts: 117
Joined: 6/20/2004
From: Auckland, NEW ZEALAND
Status: offline 		I guess I need to get to a gym (that makes TWO reasons)

Except I think my radio range is about 10 metres so it would be risky. I know nothing of these advanced maneuvres but I think I know what you mean. Forward-Right Cyclic and left rudder to prevent yaw.... oh, on 2nd thought, left rudder to induce spin to the left. ???

I could never go full right cyclic to full left cyclic without blade strike. On that point, for those that don't already know, the "advanced" setting on the flybar reduces the tendency to get blade strike because the upper blades don't do so much correction. I recommend that setting.

Warren

(in reply to bdavison)
       Post #: 58

Page:   <<   < prev  1 2 [3]
All Forums >> RC Helicopters >> Electric RC Helis >> RE: Does any body have a X-rotation mini helicopter ?
Page: <<   < prev  1 2 [3]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.828RCU1