Phoenix Models F-20 tail linkages?
09-08-2009, 10:35 AM
#1
Phoenix Models F-20 tail linkages?
Can anyone post a picture of their Phoenix F-20 tail linkages? I have a photocopied instruction manual with the F-20 I'm building and the pictures are very poor quality. It's hard to see how this goes together.
From what I can tell, this is not the best design. I've read some people lost their airplane because of control horns breaking. Now I see why.
From what I can tell, this is not the best design. I've read some people lost their airplane because of control horns breaking. Now I see why.
09-08-2009, 01:18 PM
#3
RE: Phoenix Models F-20 tail linkages?
I bet you can find some pics in this slideshow from the huge thread on the Phoenix F-20:
http://www.rcuniverse.com/forum/gall...readID=3410514
http://www.rcuniverse.com/forum/gall...readID=3410514
09-08-2009, 05:20 PM
#5
RE: Phoenix Models F-20 tail linkages?
Thanks for the link Kmot. Looks like there are different versions of this airplane. I beleive I have the US version which has both rudder and elevator servo mounted internally. It looks like the pushrods need to be bent which can cause them to flex under a load. There is a picture of Rever's F-20 that crashed due to a broken elevator control horn. Any lessons to be learned here? I purchased a control post just in case.
09-09-2009, 04:37 AM
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RE: Phoenix Models F-20 tail linkages?
ORIGINAL: Quikturn
Can anyone post a picture of their Phoenix F-20 tail linkages? I have a photocopied instruction manual with the F-20 I'm building and the pictures are very poor quality. It's hard to see how this goes together.
From what I can tell, this is not the best design. I've read some people lost their airplane because of control horns breaking. Now I see why.
Can anyone post a picture of their Phoenix F-20 tail linkages? I have a photocopied instruction manual with the F-20 I'm building and the pictures are very poor quality. It's hard to see how this goes together.
From what I can tell, this is not the best design. I've read some people lost their airplane because of control horns breaking. Now I see why.
09-09-2009, 04:40 AM
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RE: Phoenix Models F-20 tail linkages?
ORIGINAL: Quikturn
Can anyone post a picture of their Phoenix F-20 tail linkages? I have a photocopied instruction manual with the F-20 I'm building and the pictures are very poor quality. It's hard to see how this goes together.
From what I can tell, this is not the best design. I've read some people lost their airplane because of control horns breaking. Now I see why.
Can anyone post a picture of their Phoenix F-20 tail linkages? I have a photocopied instruction manual with the F-20 I'm building and the pictures are very poor quality. It's hard to see how this goes together.
From what I can tell, this is not the best design. I've read some people lost their airplane because of control horns breaking. Now I see why.
09-09-2009, 09:14 AM
#8
RE: Phoenix Models F-20 tail linkages?
Thanks for the pictures Darthvaj.
Is it posibble you can send a picture of the elevator/rudder servos? Looks like you used a clevis with a ball joint to cope with the pushrod/control horn angle. Good idea!
I'm thinking of using a pushrod from the rudder servo and run it up to the steering linkage as well. That way I can avoid a steering servo.
FYI, I was using a z bend tool for the aileron linkages and the supplied pushrods broke! I didn't realize it until I was installing the second linkage. So if anyone out there has the supplied pushrods installed, I would replace them. They could break in flight.
Is it posibble you can send a picture of the elevator/rudder servos? Looks like you used a clevis with a ball joint to cope with the pushrod/control horn angle. Good idea!
I'm thinking of using a pushrod from the rudder servo and run it up to the steering linkage as well. That way I can avoid a steering servo.
FYI, I was using a z bend tool for the aileron linkages and the supplied pushrods broke! I didn't realize it until I was installing the second linkage. So if anyone out there has the supplied pushrods installed, I would replace them. They could break in flight.
09-09-2009, 09:44 AM
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RE: Phoenix Models F-20 tail linkages?
ORIGINAL: Quikturn
Thanks for the pictures Darthvaj.
Is it posibble you can send a picture of the elevator/rudder servos? Looks like you used a clevis with a ball joint to cope with the pushrod/control horn angle. Good idea!
I'm thinking of using a pushrod from the rudder servo and run it up to the steering linkage as well. That way I can avoid a steering servo.
FYI, I was using a z bend tool for the aileron linkages and the supplied pushrods broke! I didn't realize it until I was installing the second linkage. So if anyone out there has the supplied pushrods installed, I would replace them. They could break in flight.
Thanks for the pictures Darthvaj.
Is it posibble you can send a picture of the elevator/rudder servos? Looks like you used a clevis with a ball joint to cope with the pushrod/control horn angle. Good idea!
I'm thinking of using a pushrod from the rudder servo and run it up to the steering linkage as well. That way I can avoid a steering servo.
FYI, I was using a z bend tool for the aileron linkages and the supplied pushrods broke! I didn't realize it until I was installing the second linkage. So if anyone out there has the supplied pushrods installed, I would replace them. They could break in flight.
09-10-2009, 04:28 AM
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RE: Phoenix Models F-20 tail linkages?
ORIGINAL: Quikturn
Thanks for the pictures Kmot. Looks like you used heavy duty clevises too.
I like the pipes you have on your engine, very cool!
Thanks for the pictures Kmot. Looks like you used heavy duty clevises too.
I like the pipes you have on your engine, very cool!
Sorry Quikturn, i seem to be haveing trouble uploading pics today, it says "server unable to display page" everytime i try to load a pic. I will try later today/tonight.
09-10-2009, 09:10 AM
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RE: Phoenix Models F-20 tail linkages?
ORIGINAL: darthvaj
Quikturn, here are the pics for the rudder and elevator servo setup you asked for.
Sorry Quikturn, i seem to be haveing trouble uploading pics today, it says ''server unable to display page'' everytime i try to load a pic. I will try later today/tonight.
ORIGINAL: Quikturn
Thanks for the pictures Kmot. Looks like you used heavy duty clevises too.
I like the pipes you have on your engine, very cool!
Thanks for the pictures Kmot. Looks like you used heavy duty clevises too.
I like the pipes you have on your engine, very cool!
Sorry Quikturn, i seem to be haveing trouble uploading pics today, it says ''server unable to display page'' everytime i try to load a pic. I will try later today/tonight.
09-10-2009, 09:48 AM
#15
RE: Phoenix Models F-20 tail linkages?
Thank you for the pictures Darthvaj! I had trouble uploading images too but I it's because my files were too big.
Looks like you set up the tail linkages a little different than Kmot did. Are there any bends in those linkages? I like you use of ball joint clevises. The control surfaces are not in line with the servo arms and make for a tricky setup. That may explain why some of these airplanes crashed.
As for the steering linkage, I plan on routing a pushrod from the rudder servo. I'll post pictures if this works out.
Looks like you set up the tail linkages a little different than Kmot did. Are there any bends in those linkages? I like you use of ball joint clevises. The control surfaces are not in line with the servo arms and make for a tricky setup. That may explain why some of these airplanes crashed.
As for the steering linkage, I plan on routing a pushrod from the rudder servo. I'll post pictures if this works out.
09-10-2009, 10:27 AM
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RE: Phoenix Models F-20 tail linkages?
ORIGINAL: Quikturn
Thank you for the pictures Darthvaj! I had trouble uploading images too but I it's because my files were too big.
Looks like you set up the tail linkages a little different than Kmot did. Are there any bends in those linkages? I like you use of ball joint clevises. The control surfaces are not in line with the servo arms and make for a tricky setup. That may explain why some of these airplanes crashed.
As for the steering linkage, I plan on routing a pushrod from the rudder servo. I'll post pictures if this works out.
Thank you for the pictures Darthvaj! I had trouble uploading images too but I it's because my files were too big.
Looks like you set up the tail linkages a little different than Kmot did. Are there any bends in those linkages? I like you use of ball joint clevises. The control surfaces are not in line with the servo arms and make for a tricky setup. That may explain why some of these airplanes crashed.
As for the steering linkage, I plan on routing a pushrod from the rudder servo. I'll post pictures if this works out.
09-14-2009, 12:41 AM
#17
RE: Phoenix Models F-20 tail linkages?
Kmot,
From what I can tell, the way you set up the elevator/rudder linkages is the way it's supposed to be. When I lay out the pushrods this way it requires no internal modifications (cutting of balsa). The rudder pushrod does need to be bent a little however.
From what I can tell, the way you set up the elevator/rudder linkages is the way it's supposed to be. When I lay out the pushrods this way it requires no internal modifications (cutting of balsa). The rudder pushrod does need to be bent a little however.
yup... 