HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jun 30, 2012, 04:26 PM
Bvc
Registered User
United States, TX, Houston
Joined May 2012
330 Posts
Quote:
Originally Posted by Martyn McKinney View Post
Out of the box my V911 had an intermittent aileron servo.

It turns out that the screw that holds the servo arm to the servo had been tightened too much and was pulling the potentiometer wiper away from the resistive element in the servo,

The solution was simple, I simply unscrewed the screw by 1/2 a turn and the servo has behaved normally ever since.
Thanks! I will try that (now I have to reconnect it).
Bvc is offline Find More Posts by Bvc
Reply With Quote
Sign up now
to remove ads between posts
Old Jun 30, 2012, 04:59 PM
Registered User
Del-Dredd's Avatar
Near Aberystwyth - Wales
Joined Aug 2004
2,119 Posts
MAG718, I just use standard Aircraft Acro mode for my V911 with 9x, no need what so ever to use a Heli Mode.

As SG Mason said, use Dual rates and Expo as you see fit,

On mine Throttle stays 100% no Expo
Other channels Expo is -25

Low rates are 68% on Aileron and Elevator, Rudder is 58%
High rates are 100 across the board for outdoor flight.

End point Limits are +/- 90 percent or Servo travel is past its
usable limit really.

Had to reverse elevator channel on mine as well.

I use ER9X firmware so yours maybe slightly different.
Del-Dredd is offline Find More Posts by Del-Dredd
Reply With Quote
Old Jun 30, 2012, 05:01 PM
Gone with the Mistral
ztoon13's Avatar
France, PACA, 13
Joined Jun 2012
77 Posts
I'm looking for these infos :
-KV of main motor
-teeth number for pinion and main gear
-any idea about rpm of the main rotor?
results will give me an idea for testing a rotor tachymeter
Thanks
@+
Olivier
ztoon13 is offline Find More Posts by ztoon13
Reply With Quote
Old Jun 30, 2012, 05:31 PM
Crash and learn
United States, PA
Joined Dec 2011
1,605 Posts
Quote:
Originally Posted by ztoon13 View Post
-teeth number for pinion and main gear
-any idea about rpm of the main rotor?
The v911 has a main gear of: 84
It's pinion is: 7

The 9958 has a main gear of: 74
It's pinion is: 8

The mSR has a main gear of 64
It's pinion is: 8

Daryoon
http://www.rcgroups.com/forums/showt...1#post21443797
---


Maybe Monday for tachometer reading.
Never heard of a KV rating for these brushed motors, RPM and Voltage likely vary too much between motors anyway.
Ribble is offline Find More Posts by Ribble
Last edited by Ribble; Jun 30, 2012 at 07:10 PM.
Reply With Quote
Old Jun 30, 2012, 05:35 PM
"Lurker"
Mag718's Avatar
Alabama
Joined May 2007
139 Posts
Quote:
Originally Posted by SG Mason Knives View Post
Heli mode 1, tinker with the D/R and Expos to get it where you want, all 3 control channels are on separate switches so there is no one answer. Do yourself a favor, if you haven't already, and download this manual. It is a rewritten version by someone that uses English as a first language, not the funky Chinese to English factory version that will make you want to pull your hair out trying to figure out what they are trying to say, or laugh your head off because of how they said it
Thank you guys. I only glanced at the manual before leaving, but I will download once I get home. Fly mainly outside, so just want to tone it down for landings and indoors.
Mag718 is offline Find More Posts by Mag718
Reply With Quote
Old Jun 30, 2012, 10:39 PM
What Do You Drive?
Pancari's Avatar
United States, PA, Folsom
Joined Jan 2012
704 Posts
Comments on a Successful Installation of a Blue Backlight into a Turnigy 9X

See my blog.
Pancari is offline Find More Posts by Pancari
Last edited by Pancari; Jul 01, 2012 at 09:51 AM.
Reply With Quote
Old Jul 01, 2012, 12:16 AM
Registered User
Joined Jun 2012
4 Posts
Quote:
Originally Posted by RicksterRC View Post
Use rosin core solder. 0.02" or smaller.

You ca practice using the long wire you cut off the new motor.

Strip half an inch on all four wires.
Twist the wires tight individually.
"Tin" them (all four ends) individually,
This means -
Get some solder to stick to your clean iron.
Touch the molten solder to the wire.
After a few seconds, add solder near where the iron is in contact.
It should melt and "wick" into the wire.
Let it fill the half inch you stripped.

Now tightly twist the pairs together and repeat the process.
4 wires? There are only 2 wires
fennecman is offline Find More Posts by fennecman
Reply With Quote
Old Jul 01, 2012, 12:50 AM
My toilet water has TBE
Joined Dec 2011
96 Posts
Quote:
Originally Posted by fennecman View Post
4 wires? There are only 2 wires
2 wires can have 4 ends.
stickman0236 is offline Find More Posts by stickman0236
Reply With Quote
Old Jul 01, 2012, 01:29 AM
Registered User
Joined Dec 2011
22 Posts
so i guess the yellow clone of the clone isnt any better than v911?

most yellow users mentioned it's sluggish, thus feeling heavy dispite weighing only .53g more

one did however mentioned it's able to hold its tail well almost throughout whole flight
freedomflight is offline Find More Posts by freedomflight
Reply With Quote
Old Jul 01, 2012, 02:03 AM
Registered User
Australia, QLD, Kangaroo Point
Joined Mar 2012
90 Posts
Quote:
Originally Posted by freedomflight View Post
so i guess the yellow clone of the clone isnt any better than v911?

most yellow users mentioned it's sluggish, thus feeling heavy dispite weighing only .53g more

one did however mentioned it's able to hold its tail well almost throughout whole flight
The yellow one is certainly not any better than the V911 but its not all negative.

The positives, nice build quality, some improvements ie detachable tail boom plus others mentioned, mine is very stable and precise, good for a beginner from 3 to 4 channels, the yellow one just about flies itself, even more so that the "normal" 911.

The negatives, outside flight is not as good, slower and shorter flight times ( I suspect the yellow ones motor is not as strong, it really needs the 145 batteries ) not as nimble, less agro.

I have just placed an order with BG for some 150 batteries plus other bits and pieces. I suspect it really needs the extra power of the 150's to improve outdoor flight, if anyone has the yellow clone and 150 batteries post up your opinion.

At the end of the day if you have to replace the canopy, flight bar and blades from the v911 to make it fly with the speed of the 911 there is no point buying it other than if you fly indoors in a restricted area, as mentioned they are, or at least mine is super stable and very precise / predictable.
ruskky is offline Find More Posts by ruskky
Last edited by ruskky; Jul 01, 2012 at 02:08 AM.
Reply With Quote
Old Jul 01, 2012, 02:14 AM
KDS450QS(ZYX4),V977,CX-20
FyreSG's Avatar
United States, CA, Monterey
Joined Apr 2012
5,128 Posts
Cool. Can you examine closely to see if the yellow heli vibrates while hovering? The vibrations may be very slight and can only tell by looking at the skids. If they appear blur, that means the heli is experiencing high frequency vibrations.
FyreSG is offline Find More Posts by FyreSG
Reply With Quote
Old Jul 01, 2012, 02:15 AM
Registered User
Joined Sep 2007
479 Posts
I did some weight comparisons between my O/B original and my new yellow one.
Both stock.
Weights without batteries.

O/B 28.0g
Yellow 28.5g

O/B Canopy 2.5g
Yellow canopy 3.0g

So, it looks like much of the extra weight might be in the canopy.
I expected some savings as it appears to have a CF main shaft.

The flybars, while different physically, but both weigh in at 2.0g
The yellow flybar weights are physically larger, but must be a different alloy (they are less magnetic than the ones in the old flybar).

The near weight is an original, the far is the flybar from my new yellow one.
RicksterRC is offline Find More Posts by RicksterRC
Last edited by RicksterRC; Jul 01, 2012 at 01:21 PM.
Reply With Quote
Old Jul 01, 2012, 02:52 AM
Registered User
Joined Sep 2007
479 Posts
Stiffening the stock flybar to eliminate flybar strikes

While I didn't eliminate them, they are much harder to reproduce, and less dramatic. With a minor tweak to my design, I think you could totally eliminate them.

Carefully cut a 3" piece of spare tail boom stock.
I used 2" and I think 3" would make all the difference in the world.
Mark the center of the beam

Taper both ends (wedge shape) in the same downward direction, using a file.

Use spare flybar, or remove yours.
Carefully file the "top" of the center piece. Mine had some mold flash.
The goal is to create a nice flat spot to rest the CF beam on to.
The side of the flybar with the angle gussets is the top.

Lay the beam - centered - across the top of the flybar
Tightly tape both ends to the flybar, leaving the center exposed.
Carefully apply CA and let it wick between the rod/beam, being careful not to get it on th ball link balls or pivot pin hole.
Once dry, remove the tape.
I wrapped mine with thread (Michaels craft store bead thread - nice, very thin braid - very strong).
Clove hitch near the ball link. Two wraps around the ball link and hold with thumb.
Pull clove hit tight and wrap tightly to end of rod. I ended by sticking he last wrap end between the rod and box.
Remove the wrap around the ball link.
Now carefully appy glue (thinner the better) between the bar and box, saturating the thread. Be careful to not get any on the ball links
When dry, trim and repeat on other side.
You may need to lighty file or sand the center pivot area on both sides to ensure it pivots ok. I also had to use an excto tip to ream out the ends of the screw hole a tiny bit.

I used a wide tip sharpie to color the white thread black to match things up.

Now as to flying. If you deflet the flybar by hand, it is completely rigid until the end of the CF box. No more limp noodle dnagling flyba. With enuogh force, the piece after the rod can deflect down to the canopy.
A 3" piece would make contact extremely difficult.

After the fix, the flybar weighed in at 2,3g.
I don't think the CF box has added a significant enough air drag so as to shorten flight times noticeably.

Flight characterics may have changed after the mod. If so, I can't tell whther it's better or worse. If you have a spare tail boom, spare flybar, some thread and CA, why not give it a try,

You might give this a try.

And buy a "new" canopy (aliexpres firecabbage has them) - they are lower profile and seem to suffer less strikes
http://www.aliexpress.com/product-fm...olesalers.html

IN the right hand picture you may be able to make out my helper Shadow. He likes to participate in all things related to my helicopters.
RicksterRC is offline Find More Posts by RicksterRC
Last edited by RicksterRC; Jul 01, 2012 at 01:24 PM.
Reply With Quote
Old Jul 01, 2012, 04:06 PM
Registered User
Joined Jun 2012
4 Posts
Quote:
Originally Posted by stickman0236 View Post
2 wires can have 4 ends.
oupss sorry lol
fennecman is offline Find More Posts by fennecman
Reply With Quote
Old Jul 01, 2012, 04:47 PM
Registered User
United Kingdom, England, Redcar
Joined Jan 2006
3,270 Posts
Nice mod , i think ill try the same with some 1mm carbon rod secured with nylon thread and superglue.
scousethief is offline Find More Posts by scousethief
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
New Product Jiuchon 9C002, a Solo Pro clone? SoloProFan Micro Helis 103 Feb 29, 2012 02:24 PM
Discussion Interesting Solo Pro? Clone gordonzo Micro Helis 46 Nov 30, 2011 03:15 AM
Question Which 100 sized heli after Solo Pro? Tuc Micro Helis 16 Jun 13, 2011 01:52 PM
Sold $100 !NEW ARF Storm 250 (Trex Clone) With Align Upgrades, Tons of Extras! $100!! RChelisrule Aircraft - Electric - Helis (FS/W) 1 May 31, 2011 12:26 AM