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Century Hawk - 50NX - Raven - Predator > Why ?
 
 
Blade_Master1
Elite Veteran
Location: Canada

My Posts This: Topic  Forum
why is it that my Hawk pro flies better then my Raven 50?

is it the control system ??

I prefer to fly my Hawk pro over the Raven because it is more predictable, I aim and it goes there.
On the Raven it goes but you gotta be carefull where you aim it

The Raven seems to be faster then the Hawk pro Cyclic wise
is this normal?

Am I just not ready yet for the Raven?

I can do sport flying but no 3D yet.





F-27
MSR
Terminator Raven
NX Pro
Raven50
K50
HawkPro(~rip)
Swift 550
06-23-2009 02:04 AM
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum
i noticed that compared to my predator, the Raven is a lot quicker on the cyclic. but if you are having problems with it being too pitchy, then you should double check the paddles and make sure they are aligned dead on.

i find over and over again that if my predator for example wants to always pitch up, that its because one paddle is slightly off.

if you are still having issues, you could throw on the flybar weights the Raven comes with.

Shawn
Team Leisure-Tech
Team HelixRC
06-23-2009 02:55 AM
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beavis1
Key Veteran
Location: New York state

My Posts This: Topic  Forum
I always liked the hawk pro over my raven as well. I did have a 50 in the pro with 560 blades so it was a monster. But the mechanical CCPM is so nice and simple.... The raven you have to set it up and level the swash with a mix if you have interaction. Also with the E-CCPM on the raven if you have a off servo even in a matched set the heli never flies great.

Not that this is not the case with all E-CCPM over M-CCPM just why I liked the Hawk set up over the raven....

Now the NX seems to fall in the middle the bell cranks add a tad bit of stability not sure why ? and it gets rid of the little bit interaction the hawk has that you dial out with a mix.

Century Heli Rep. Holo foil power !!! Magnum fuel
06-23-2009 03:44 AM
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum
i haven't flown or setup a Hawk YET, but my old Nexus had a similar swash setup. and i have to agree, when one is learning, and crashing a lot. the mechanical configureation is definitely the way to go.

i have always ground my teeth each time i build a heli and get to the swash setup. even though im getting faster and better with it, i still don't like setting them up.

Shawn
Team Leisure-Tech
Team HelixRC
06-23-2009 03:48 AM
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Blade_Master1
Elite Veteran
Location: Canada

My Posts This: Topic  Forum
Flybar wieghts

I did keep them on the Raven

I did set it up for 3D,but man that thing is fast, it can flip on the spot which is differant from last year. I had a hard time flipping it with the old round style swash
Yesterday it started flying weird suddenly, my tracking seemed off when I landed I found 1 of the links for the flybar to washout was broken easy fix

My Hawk has a Raven head and tail and a CTD "constant tail drive"
I am not using paddle weights just the paddle that come with the Raven

Even with the same Heads and set-up the Hawk seems more Docile compared to the Raven

F-27
MSR
Terminator Raven
NX Pro
Raven50
K50
HawkPro(~rip)
Swift 550
06-23-2009 11:54 AM
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Skybolt
Heliman
Location: Ontario, Canada

My Posts This: Topic  Forum
Hi Blade Master,

I have notice that too that the Raven is twitchier than the Hawk (with 4mm fly bar with stock Raven paddle).

If you have the 4mm fly bar the Hawk become very stable. Last year I had the 3mm fly bar and it make a big difference. It was twitchier with the 3 mm fly bar and Hawk stock paddle.

What I did is i gave more exponential on the Raven (negative value on Futaba) to match the Hawk. This way you slow down the middle stick movement and still keep the full deflection for the control.

The other thing I did is put FAI Rotor tech paddle on the Raven. What a difference. The other day I was doing (attempting L.O.L.) precision hovering in 20-25 km cross wind (1600 rpm). What a difference in stability in hovering but still very active when you bump the rpm to 1800-1900 for forward flight.

I have not tried the NX or 90 machines yet.

I want to try the Hawk stock 3 mm paddle, drill and tap them for 4mm to see if that would make a difference. Would it be safe to do that? That would be a good question for our experts on this forum.

I like both of them and like human, they have own personality.

Experiment with the setting and have fun. This is half the hobby.
06-23-2009 01:58 PM
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chris6414
Senior Heliman
Location: HMH-772 NAS JRB Willow Grove, Pa USA

My Posts This: Topic  Forum
I too just installed the 4MM flybar kit and my Hawk Sport is even more stable. I think the paddles are the same weight from the 3MM to the Grey 4MM. Not sure though. Next is the ball bearing upgrade to clean up the slop a little more in the linkages. The triple ball bearing tail is also well worth the money.

Century Hawk, Sport, OS .32, Futaba 7C, G153BB gyro
06-23-2009 02:37 PM
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum
Quote 
Yesterday it started flying weird suddenly, my tracking seemed off when I landed I found 1 of the links for the flybar to washout was broken easy fix

thats what caused my crash at the Stetson field last year. i didnt realize the links were binding. you need to have that beveled link to have enough clearance.

i found i was able to stretch the cyclic to 7 degrees, but 6 is ample, and provides better clearance.

as for the NX, im itching to fly it. with any luck the mail lady will be lugging it here tomorrow she knows me by name now, too many dang packages.

Shawn
Team Leisure-Tech
Team HelixRC
06-23-2009 09:37 PM
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Blade_Master1
Elite Veteran
Location: Canada

My Posts This: Topic  Forum
Binding?

The link looked like it was stretched till broken HMMM

I did check for binding on the bench

F-27
MSR
Terminator Raven
NX Pro
Raven50
K50
HawkPro(~rip)
Swift 550
06-23-2009 11:18 PM
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum
check for the binding while holding cyclic in all directions while moving the collective up and down. you will not see the binding if the collective is in certain spots. and be sure not to shove the cyclic stick in the corners while flying.

your link should not break or pop off if it isnt worn out completely and isn't binding.

Shawn
Team Leisure-Tech
Team HelixRC
06-23-2009 11:31 PM
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the Wasp
rrProfessor
Location: Vt

My Posts This: Topic  Forum
Hawk vs Raven

the Hawk has better Servo Resolution than the Raven, this is because of the extra long Servo Arms on the Raven,,

as I said a while ago, the new NX Control System will allow for better Servo Resolution than the Raven,,

if you look at your TX Setting for your Raven you will see you have A) ATV, B) Dual Rates, C) Swash Mix,, the closer you have all these setting to 100% the better your Servo Resolution,,

but, because of the Long Servo Arms on the Raven 1 of these setting (A, B or C) needs to be set low,, say around 60% maybe 70%,,

the NX, like the Hawk, uses short Bellcranks and short Servo Arms, this will allow you to get all 3 settings (A, B and C) closer to 100% for better Servo Resolution..


NOW,, I am not saying this IS the reason why you all say your Hawk flies better, all I am saying is Better Servo Resolution will give you a better feel on the sticks, this better feel will make your heli feel smoother and more in-control,,

and to answer the question,, yes you are ready for the better heli,, buy the NX !!

Jim
Buzz Buzz Buzz
06-24-2009 06:46 AM
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Blade_Master1
Elite Veteran
Location: Canada

My Posts This: Topic  Forum
Thanks Wasp
very wise advice
I may have to convert my Raven to a NX control

F-27
MSR
Terminator Raven
NX Pro
Raven50
K50
HawkPro(~rip)
Swift 550
06-24-2009 11:56 AM
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Mutt
Key Veteran
Location: M ca usa

My Posts This: Topic  Forum
I think I have to agree with wasp on this one. Does make sense. I also will say it is hard to beat the hawk pro for being smooth and very controlable. That is one reason why I recomend it to someone who wants thier first heli. ANother reason why I like to convert them to a 50 size too for a bigger scale fuse for them because of thier stability and smoothness. If that nx is as smooth as the hawk pro is that will be a real winner for sure.
06-24-2009 01:29 PM
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum
are the bell cranks on the Raven NX 1:1 ?

i realize your now using shorter links on the servos for better resolution. but does the swash not need to move the same distance as the old setup?

Shawn
Team Leisure-Tech
Team HelixRC
06-24-2009 07:06 PM
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canbarelyhover
Veteran
Location: Sunnyvale, CA

My Posts This: Topic  Forum
i believe the bell cranks are 1:1 - at least they look it. between the raven and nx50, i didn't see any differences from the swash up(aside from the fatter predator links) so swash needs the same amount of movement. although you get more resolution out of your servo, i found that the new setup has a tad bit more interaction that needs to be dailed out because of the shorter bellcranks(compared to the raven).

-James
got nitro?
06-24-2009 10:32 PM
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the Wasp
rrProfessor
Location: Vt

My Posts This: Topic  Forum
canbarelyhover,, have you found the NX to feel better than the Raven on the Cyclic ??

Jim
Buzz Buzz Buzz
06-24-2009 11:04 PM
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canbarelyhover
Veteran
Location: Sunnyvale, CA

My Posts This: Topic  Forum
to tell you the truth, i can't really make a fair comparison. my nx is quicker and poppier than my raven ever was but my setup now and then are completely different.

-James
got nitro?
06-25-2009 12:12 AM
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beavis1
Key Veteran
Location: New York state

My Posts This: Topic  Forum
The NX should have no interaction with the cranks at 90 the servo arm at 90 and the pushrods go up straight. The only interaction would be servo induced.

Century Heli Rep. Holo foil power !!! Magnum fuel
06-25-2009 12:13 AM
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Century Hawk - 50NX - Raven - Predator > Why ?
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