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HelicopterCentury Radikal G20-30 N640 Hawk Predator › GY401 mounting on hawk pro
01-25-2007 06:02 PM  10 years agoPost 1
schoenju

rrApprentice

Springfield, oregon USA

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The instructions fpr the hawk pro instruct you to install the gyro within the 10 cm that the GY 401 instructions say to stay outside of. In other words the mounting plate for the gyro on the hawk is within 10 centimeters of the engine. The manual for the gyro specifically states that you need to mount it outside 10cm from the engine. So what are you guys doing? Or is mounting the gyro where century says ok?

Justin Schoenberg

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01-25-2007 06:27 PM  10 years agoPost 2
tman

rrNovice

Brownsburg, IN USA

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made my own gyro mounting plate out of aluminum. century also sells their own. see picture of mine. located where tail boom goes into heli frame. works great. no damage in recent crash.

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01-25-2007 06:33 PM  10 years agoPost 3
SteveH

rrProfessor

Texas

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Justin,

Ever since my first Hawk seven years ago, I've been mounting the gyros on the radio tray under where Century says to put the switch, and without problems.

I've used CSM, Futaba, and JR gyros in that location, all without problems.

The government cannot give you anything without first taking it from someone else.

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01-25-2007 07:07 PM  10 years agoPost 4
genovia

rrElite Veteran

N UR NECK OF DA WOODS

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I you have doubts. Here is an optional part, so you can mount your GY in the back of our Hpro. Part# HW3117

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01-25-2007 07:19 PM  10 years agoPost 5
jjp735i

rrApprentice

Pittsburgh, PA

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I also mount mine were Century states. I've had boom strikes that would have taken out the gyro if mounted like tman's.

jjp

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01-25-2007 09:06 PM  10 years agoPost 6
WhirlyBird500

rrApprentice

Rhode Island, USA

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I agree. I have been flying my Hawk for the last year with the gyro under the servo tray with no problems.

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01-25-2007 09:10 PM  10 years agoPost 7
ket

rrVeteran

ohio hill country

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I had my gyro under the servo tray and have recently moved it to the tail for set up reasons, I dont like it there and once i get set up all done I will put it back under servo tray.. I used the century part to mount on tail.

the way the weather is now it will be early spring before i can get mechanical all redone and relocate gyro... 17F counting windchill and getting colder

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01-25-2007 10:34 PM  10 years agoPost 8
oldfart

rrProfessor

Vancouver, Canada

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I have always mounted my gyros like SteveH - under the canopy, on the servo tray behind were the switch is mounted in the instructions. I mount the switch on the lower mainframe using double sided servo tape.

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01-26-2007 02:20 AM  10 years agoPost 9
cassat

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Alberta,Canada

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So then, if you need to adjust the delay pot...how would you access it?

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01-26-2007 02:37 AM  10 years agoPost 10
genovia

rrElite Veteran

N UR NECK OF DA WOODS

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So then, if you need to adjust the delay pot...how would you access it?
If you are using the latest GY they require little adjusting, once it is adjusted you leave it alone, for example on the 401 GY you leave the limit and delay at zero and you deal your radio to set the gain percentage in your transmitter. 240, once you find the sweet spot, your done.

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01-26-2007 03:18 AM  10 years agoPost 11
beavis1

rrKey Veteran

New York state

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401

If you use the 401 with th eproper servo you never need to adjust delay.

I also mount mine safe and sound in the radio tray, Why put it out with oil and in harms way when you do not need to?

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01-26-2007 03:30 AM  10 years agoPost 12
MikeInMobile

rrElite Veteran

Mobile, Alabama

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The tail gyro mount works UNDER the tail boom as well as on top of the tail boom! The GY401 will fit under the boom mount (above the tank). To adjust the delay, remove the two screws, adjust the gyro, and remount!

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01-26-2007 02:02 PM  10 years agoPost 13
pschurter

rrApprentice

La Serena - Chile

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I mounted it next to the elevator servo, on the servo tray. To do this I cut a small plastic plate to mount as a servo, and double-taped the gyro over it. It is a very clean spot, and it is clearly visible/accessible.

Good flight, good night!

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01-26-2007 02:24 PM  10 years agoPost 14
beavis1

rrKey Veteran

New York state

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that seems a little risky

Boy that seems like a prime place to destroy a gyro in a crash. I think I would rater put it out on the rear then top in front. Most new guys learning forward ove roll or cross control and put it in forward canopy down. 3D guys seem to plant top down as well.
That location seems to make it the highest point and the item to take most of the shock.

I still stand with inside the front frame. Safe and clean win win.

I am not sure what all you guys are adjusting on a 401. Unless you really cheaped out on servo you do not need to adjust the delay. And if you do need to fine tune delay for a non standard servo you can still pop a servo 4 screws. adjust delay it and replace. It is not like you constantly need to adjust. Just set it up and it is done ?
If you are constantly adjusting delay you got another problem or are over thinking the gyro.

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01-27-2007 02:18 PM  10 years agoPost 15
jester4

rrKey Veteran

Brampton, Ontario

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I mount mine between the frames on top. It has a nice spot there that is perfect for the 401. Thanks to pschurter for the picture

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01-28-2007 01:20 AM  10 years agoPost 16
pschurter

rrApprentice

La Serena - Chile

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My pleasure, jester.

Good flight, good night!

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01-29-2007 02:53 PM  10 years agoPost 17
paddle

rrNovice

Ocala, Florida

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I found the position like SteveH uses working well. Had some head-on chrashes, did not affect the gyro. (Knock on wood ) Regardless where you mount it, you should be able to see the unit's ready light. I like to see it, so that I can see when it is reay to go.

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01-29-2007 03:00 PM  10 years agoPost 18
schoenju

rrApprentice

Springfield, oregon USA

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what about a plate right behind the main shaft where the tail shaft goes into the mainframe. There shouldnt be any blade strikes there should there?

Justin Schoenberg

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01-29-2007 03:07 PM  10 years agoPost 19
pschurter

rrApprentice

La Serena - Chile

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Justin , that's the classic position of the gyro for other helis. I don't know why Century didn't make it like this for the Hawk. Perhaps it would collide with the ccpm conversion?
Not blade strikes, but in some helicopters (t-rex) a flybar strike.

(I am a senior heliman now, yay!)

Good flight, good night!

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01-29-2007 03:11 PM  10 years agoPost 20
SteveH

rrProfessor

Texas

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Justin,

Century makes just such a plate as an option...see genovia's post earlier in the thread. The gyro will certainly work there, will not be subject to a blade strike, under "normal" crash conditions, but will be subject to oil from the exhaust.

The government cannot give you anything without first taking it from someone else.

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HelicopterCentury Radikal G20-30 N640 Hawk Predator › GY401 mounting on hawk pro
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