RE: Extreme Flight 110" 100cc Yak 54 Build!  
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All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> RE: Extreme Flight 110" 100cc Yak 54 Build!
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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/7/2008 7:46:19 PM   
drewbags



Posts: 201
Joined: 1/27/2005
From: NorwichNorfolk, UNITED KINGDOM
Status: offline
quote:

ORIGINAL: Flyin Hawaiian


- Chris Hinson sent me a 5" straight SWB rudder servo arm, and the geometry for pull-pull constrols were not correct. The rudder servo arm needed to match the rudder control horns measured at 4-3/8" w/ offset, like the 4" SWB off-set servo arm. So I modified the 4" arm I had and made carbon fiber arm extensions. Worked like a champ, and now I get nice cable tension through-out the whole rudder deflection in both directions.



That is what Rennie did, I have used a 4" SWB Offset in mine and it seems to work fine.

(in reply to Flyin Hawaiian)
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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 12:05:22 AM   
Josey Wales



Posts: 4682
Joined: 7/27/2003
From: **, NJ, USA
Status: offline 		I have a 4" straight that Im going to try out.

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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 12:56:08 AM   
Rush7



Posts: 700
Joined: 11/8/2004
From: Chattanooga, TN, USA
Status: offline 		The correct legnth for the rudder servo arm is the 4.5" offest. I checked with SWB and he told me that he was about a month out getting them ready.
I called Chris and he said that the 4" offset arm should work but I told the guy at the SWB to send one my way when he getss them ready.
I will change to the 4.5" arm when it comes.

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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 1:09:00 AM   
Josey Wales



Posts: 4682
Joined: 7/27/2003
From: **, NJ, USA
Status: offline 		YeaI dug up an old email I sent to Chris and he said the 4" straight will work too but the new one from SWB will be a perfect match..Im gonna just use the 4" for now and Ill get the new one when it comes out.

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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 2:57:05 AM   
Rush7



Posts: 700
Joined: 11/8/2004
From: Chattanooga, TN, USA
Status: offline 		If I dont like the setup on a 4" SWB on a single 8711, I am going to put my SWB dual servo tray in it and run two 8611A's. The SWB tray has a 4.5" arm on the bellcrank portion.
It may just be as well to go ahead and put it in it but the thing feels like a brick with both servos in it. I want to keep the weight down as much as possible.

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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 4:00:50 PM   
diamondave



Posts: 1676
Joined: 9/2/2004
From: marana, AZ, USA
Status: online 		pfoot, nice pics, love the comparison with the 88....makes my 88 look small .....someday,i am already dropping hints to my wife

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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 4:19:57 PM   
xtraflyr


 

Posts: 1618
Joined: 3/10/2002
From: Chester, NJ, USA
Status: online 		Yeah if things keep goin at work like they are,Ill be looking at a 14% bonus in Sept!! We had a state of the company meeting and the prez. is giveing us $75 a month for gas expense!

So Im thinking,the 110" Yak and the motor probably a DA85.Maybe let the wife use the rest..

Cya,
Frank


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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 5:53:10 PM   
Rush7



Posts: 700
Joined: 11/8/2004
From: Chattanooga, TN, USA
Status: offline 		Let the wife use the rest?????????????
Man you need to be more like me, I look at my wife and say "what money....... I dont have no stinking money."
quote:

ORIGINAL: xtraflyr

Yeah if things keep goin at work like they are,Ill be looking at a 14% bonus in Sept!! We had a state of the company meeting and the prez. is giveing us $75 a month for gas expense!

So Im thinking,the 110" Yak and the motor probably a DA85.Maybe let the wife use the rest..

Cya,
Frank



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       Post #: 533

RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 8:31:21 PM   
Josey Wales



Posts: 4682
Joined: 7/27/2003
From: **, NJ, USA
Status: offline 		Okso what is the trick to matching up the aileron servos ? Ive been at it all day and am getting nowhere fast. When I try to match the degrees both ways from center by adjusting the linkage its not even close. Since you cant change the control horn height how are you guys matching them up ?

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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 9:28:47 PM   
drewbags



Posts: 201
Joined: 1/27/2005
From: NorwichNorfolk, UNITED KINGDOM
Status: offline 		I used a matchbox on each wing which made it very straight forward.

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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 9:32:49 PM   
Josey Wales



Posts: 4682
Joined: 7/27/2003
From: **, NJ, USA
Status: offline 		Well matchboxes just match the end pointsthat's not really what Im looking for-however I may have to settle for just doing that since the horns are not adjustable

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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 9:50:52 PM   
rcairflr


 

Posts: 626
Joined: 9/2/2004
From: Wichita, KS, USA
Status: offline
quote:

ORIGINAL: Josey Wales

Okso what is the trick to matching up the aileron servos ? Ive been at it all day and am getting nowhere fast. When I try to match the degrees both ways from center by adjusting the linkage its not even close. Since you cant change the control horn height how are you guys matching them up ?



Use Hitec 5955's and the programmer. Makes this job very easy.

(in reply to Josey Wales)
       Post #: 537

RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/8/2008 10:17:57 PM   
Josey Wales



Posts: 4682
Joined: 7/27/2003
From: **, NJ, USA
Status: offline 		Thats not what I mean-What I want is equal throw in both directions and at the same time have the servo arm move the same distance each way from center. If I just adjust the linkage to hold the control surface at the center, then use the programmer to set the max throw each way, the geometry is way off.

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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/9/2008 12:00:46 AM   
JoeAirPort



Posts: 7148
Joined: 8/11/2003
From: Milwaukee, WI, USA
Status: online
quote:

ORIGINAL: Josey Wales

Thats not what I mean-What I want is equal throw in both directions and at the same time have the servo arm move the same distance each way from center. If I just adjust the linkage to hold the control surface at the center, then use the programmer to set the max throw each way, the geometry is way off.


Joe, I know exactly what you mean. Another guy from Finland, Norway or somewhere posted this same issue a few weeks ago. If the horn height is not adjustable then you can't match the geometry a la DOD method. I think you'll have to compensate electronically which will cause some mismatch in speeds. The aileron must have enough flex to be able to absorb it IMO. I think that's what people must be doing with this fixed horn height.

The only other thing you could do is drill new holes in one of them if you knew where the hole had to be. I think the inboard one would have to be lower.

< Message edited by JoeAirPort -- 6/9/2008 12:08:05 AM >

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RE: Extreme Flight 110" 100cc Yak 54 Build! - 6/9/2008 12:25:57 AM   
plaster93


 

Posts: 150
Joined: 4/12/2003
From: Philadelphia, PA, USA
Status: offline 		Yep if you use the programmer you just set the deflection one servo at a time so they both match the throw you want.

(in reply to JoeAirPort)