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Old Feb 25, 2013, 04:29 PM
addifromgermany is offline
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Quote:
Originally Posted by miketre View Post
Remember to set your Rudder Travel adjustment before the maiden flight!

I know someone has mentioned it on this thread before, but I thought it's worth mentioning again as this helis is targetted at beginners moving up to CP helis like myself.
I was lucky not to have the servo burn in mid flight. I was practicing piro flips for the first time on this heli today and had applied left rudder most of the time.
When I landed, my friend who was teaching me picked up the heli to illustrate his lesson. His hand touched the tail servo and it was hot. I touced it and it was hotter than the ESC. I'm lucky to have him notice it or I may have risk a servo burn out in mid flight.

Anyway, I got home and set up the Devo7. I had to reduce the rudder travel to about 48% to 50% before it maxed out to its mechanical limits.
You should setup rudder travel on the RX not the TX! I you only limit rudden travel on your devo the FBL still could juse the hole travel in to the mechanical limit!!!
So please setup rudder-travel to 100% at the TX and reduce the travel using the pod on the RX thats the only safe way!
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Old Feb 25, 2013, 07:42 PM
miketre is offline
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Mike
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Quote:
Originally Posted by addifromgermany View Post
You should setup rudder travel on the RX not the TX! I you only limit rudden travel on your devo the FBL still could juse the hole travel in to the mechanical limit!!!
So please setup rudder-travel to 100% at the TX and reduce the travel using the pod on the RX thats the only safe way!
Thanks Addi. I'll try it out.

Edit: I did this and had 4 flights.
The rudder servo is still hot!
How is everyone else's rudder servo?
Last edited by miketre; Feb 26, 2013 at 01:13 AM.
Old Feb 25, 2013, 09:56 PM
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got a really strange response after fixing my 450 from a bad crash......as i pitch up, the tail will turn as in i've put on a rudder input for it to go right.... does anyone know what's causing this?

and before i could find out the problem....the hinge that connects the tail unit broke into half.....luckily i was just hovering 1/2 feet in the air and no other visual damage.....so i'm just waiting for the whole tail unit to arrive at the moment....apparently there's no one selling just the T hinge..... =(
Old Feb 26, 2013, 06:15 AM
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Quote:
Originally Posted by miketre View Post
Thanks Addi. I'll try it out.

Edit: I did this and had 4 flights.
The rudder servo is still hot!
How is everyone else's rudder servo?
Hello Mike, is it possible to tell if the elevated temperature of the rudder servo was noticeable all along, during the time when you carried out rudder travel adjustments at the transmitter, or if the temperature rise started when you made that rudder travel adjustment on the reciever, as recommended by Addi from Germany a couple of posts above.

My newly purchased V450D03 heli hasn't arrived yet, but I'm hoping to learn about as many do's and donts as I can, before the shipment arrives, and I maiden flight the bird.
Old Feb 26, 2013, 09:02 AM
miketre is offline
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Mike
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I think Addi's method is better way, so I had used that for all 4 flights that I had today. I'm sure that the mechanical limit is not reached.

I didn't notice the hot rudder servo previously when I was learning forward and flips and did not use much rudder.
I only started to use the rudder in the last couple of days learning pirouettes and pirouette flips. I do this and nothing else throughout the whole flight, so the rudder is used a lot.
I will need to get a flight in where I don't use the rudder as much and check if the servo is still hot.

Learning piro flips with the Walkera V450D03 heli for CP beginners (3 min 4 sec)
Old Feb 26, 2013, 12:03 PM
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Ah I see. Probably the extra rudder use would account for that heating. It'll be a good while before I muster the nerve to try any 3D flying, so I probably won't have heating problems while I'm still an over-cautious noob flying in grandpa mode.
Old Mar 03, 2013, 07:26 AM
Rollmops67 is offline
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Eternal beginner
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In december 2012 I bought a V450D03 at banggood.com because it's price with the Christmas rebate was irresistible.
I just flew it one time, just to see if all is OK with it, because at this time my skills with CP helis were not very good.
Meanwhile, since the beginning of 2013 I had about 80 flights with my 2 Master CPs and I'm beginning to be comfortable with it, but I still consider myself as a beginner.
This morning there was sun and not too much wind, so I decided to give the V450D03 a try and emptied two batteries, without any problem.
It is as stable as the Master PC, with increased visibility, and better wind authority, seeing the bigger size.
I'm far from flying 3D (will I ever be good enough ??), but that's not my goal.
I prefer realistic or "sports" flying with nice turns.

My transmitter settings are about the same as for the Master CP :
Throttle curve :
NORM : 0-20-50-70-70-70-70
ST1 : 70 flat curve
ST2 : 80 flat curve

Pitch curve :
NORM : linear from -15% to + 45% (about -3 to +10)
ST1, ST2, THHLD : same curve than in NORM

I Fly with 60% DR, but no expo at all, because the V450D03 (like the Master CP) is basically very tame and stable around midstick.

Attached a picture of my bird.

Have nice flights and smooth landings

Roland
Old Mar 04, 2013, 01:07 PM
Rain4LA is offline
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Hey guys,
Any ideas on what I can do to stop some pretty violent shaking at a certain rotation speed (spooling up and spooling down) on my D03? I'm sure that this is not a trait specific to this helicopter only, but I'm just seeing if anyone has suggestions.

Thank you!
Old Mar 04, 2013, 01:24 PM
Xermalk is offline
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Originally Posted by Rain4LA View Post
Hey guys,
Any ideas on what I can do to stop some pretty violent shaking at a certain rotation speed (spooling up and spooling down) on my D03? I'm sure that this is not a trait specific to this helicopter only, but I'm just seeing if anyone has suggestions.

Thank you!
That happens on all helicopters, even real ones .When you spool up or down, the rotor disk resonates with different parts on the heli.

Only way to stop that is the break the laws of physics and have instant acceleration and deceleration.

Now you can minimize it by spooling up slowly, but that's about the best you can do.
Old Mar 04, 2013, 01:34 PM
Rain4LA is offline
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Originally Posted by Xermalk View Post
That happens on all helicopters, even real ones .When you spool up or down, the rotor disk resonates with different parts on the heli.

Only way to stop that is the break the laws of physics and have instant acceleration and deceleration.

Now you can minimize it by spooling up slowly, but that's about the best you can do.
Yeah, I get it. I've had this for a little while and it never did it so bad. I've crashed it a couple of times and I've got a couple of parts on the head (you know - like the rotor hub and grips ) that aren't stock. Also the tail boom is slightly bent, but I don't think the belt is touching inside. Any thoughts?
Old Mar 04, 2013, 03:13 PM
Hexperience is offline
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devIAtion..one TX to bind them
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I posted a vid awhile ago of starting up with the YEP esc.
https://www.rcgroups.com/forums/show...&postcount=466

It's slower and helps to reduce the shake but doesn't remove it altogether.
Old Mar 04, 2013, 04:50 PM
Rain4LA is offline
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Thanks Hex. Yeah, I was thinking there was something mechanical that would be a main culprit in this. It's just a lot worse than it used to be. I mean, there is a certain point when spooling down that it just about shakes itself crazy. Like a freakin' seizure. By the way, your video shows very smooth motion.
Old Mar 04, 2013, 05:15 PM
Rollmops67 is offline
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Eternal beginner
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Quote:
Originally Posted by Rain4LA View Post
Hey guys,
Any ideas on what I can do to stop some pretty violent shaking at a certain rotation speed (spooling up and spooling down) on my D03? I'm sure that this is not a trait specific to this helicopter only, but I'm just seeing if anyone has suggestions.

Thank you!
Mine also shakes a lot, espacially when spooling down (I have only 4 flights on it without any crash). I think the next time I will try to push a little with my hand on the rotor head while spooling down.

Roland
Old Mar 04, 2013, 06:37 PM
Schiksie is offline
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Quote:
Originally Posted by Rollmops67 View Post
In december 2012 I bought a V450D03 at banggood.com because it's price with the Christmas rebate was irresistible.
I just flew it one time, just to see if all is OK with it, because at this time my skills with CP helis were not very good.
Meanwhile, since the beginning of 2013 I had about 80 flights with my 2 Master CPs and I'm beginning to be comfortable with it, but I still consider myself as a beginner.
This morning there was sun and not too much wind, so I decided to give the V450D03 a try and emptied two batteries, without any problem.
It is as stable as the Master PC, with increased visibility, and better wind authority, seeing the bigger size.
I'm far from flying 3D (will I ever be good enough ??), but that's not my goal.
I prefer realistic or "sports" flying with nice turns.

My transmitter settings are about the same as for the Master CP :
Throttle curve :
NORM : 0-20-50-70-70-70-70
ST1 : 70 flat curve
ST2 : 80 flat curve

Pitch curve :
NORM : linear from -15% to + 45% (about -3 to +10)
ST1, ST2, THHLD : same curve than in NORM

I Fly with 60% DR, but no expo at all, because the V450D03 (like the Master CP) is basically very tame and stable around midstick.

Attached a picture of my bird.

Have nice flights and smooth landings

Roland
Hoi Rolmops,

What blades are you using there and where did you get the stickers for the skids, or are they just tape ?

Grtz Jeroen
Old Mar 04, 2013, 07:17 PM
Hexperience is offline
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devIAtion..one TX to bind them
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Quote:
Originally Posted by Rollmops67 View Post
Mine also shakes a lot, espacially when spooling down (I have only 4 flights on it without any crash). I think the next time I will try to push a little with my hand on the rotor head while spooling down.

Roland
When spooling down, I always use throttle hold and put the pitch at zero, that helps a lot on the spool down.


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