R90 Tail servo problem - HeliFreak
Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > Thunder Tiger 60/70/90


Thunder Tiger 60/70/90 Raptor 60/70/90 Helicopters


Reply
 
LinkBack Thread Tools Display Modes
Old 02-27-2013, 09:38 AM   #1 (permalink)
Registered Users
 
Posts: 1,323
 

Join Date: Nov 2008
Location: Over here in Blighty
Default R90 Tail servo problem

Guys - I am re-building my 90 after a recent Align 2in1 failure/brown-out

I want to put the tail servo up front as it is getting caked with fuel residue, but the control rod touches the main drive wheel when the servo horn is 45 degs from vertical.
This won't work - so, any ideas or work-arounds please?
It is the CF frame-set SE version.

Many thanks
Keith
__________________
Raptor 50 TitanSE - AR7200BX + RJX head
Raptor 550E with a flybar!!
Align 500 pro with Speed fuselage
mCPX V2
KeithT is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 02-27-2013, 12:31 PM   #2 (permalink)
Registered Users
 
Posts: 2,307
 

Join Date: Jan 2010
Location: NorCali (San Jose)
Default

How is that possible?
There are guide holes in the frame spacers that should route the control rod above the main gear.
Are you using the stock TT R90 rudder control rod (2 pieces)?

On a related note: Use the R90 G4 control rod coupler instead of the one that came with the R90 "classic".

BTW: I too have the TR caked a oil after every flight. But, I can't move it back to the front because I use the push-pull collective bellcrank upgrade. That takes the space the rudder servo would normally use.
I use a paper towel to clean up the airframe at the end of the day - and the servo gets extra attention.
ticedoff8 is online now        Reply With Quote Quick reply to this message
Old 02-27-2013, 01:35 PM   #3 (permalink)
Registered Users
 
Posts: 1,323
Thread Starter Thread Starter
 

Join Date: Nov 2008
Location: Over here in Blighty
Default

The only frame spacers are on the boom mount (just before the rod bends) and in the rear section of the CF frame. From there to the front-sited servo, there's no support.Here's a video of what I mean (hopefully!)

I always give the airframe a good clean after flying, but the residue gets into the servo case so much that it oozes out when you squeeze it. I could wrap the servo in tape or something I suppose - it's an Align DS620 & they have no rubber seals. I have Futaba servos on my R50 and the tail is sealed up & fine. I have the push-pull fitted to that as well, so my tail has to be boom mounted.

http://www.youtube.com/watch?v=rv314...ature=youtu.be

Keith
__________________
Raptor 50 TitanSE - AR7200BX + RJX head
Raptor 550E with a flybar!!
Align 500 pro with Speed fuselage
mCPX V2
KeithT is offline        Reply With Quote Quick reply to this message
Old 02-27-2013, 02:03 PM   #4 (permalink)
Registered Users
 
Posts: 386
 
My HF Map location
Join Date: Oct 2006
Location: Houma, Louisiana
Default R90 Tail Servo Problem

Pick up a couple of rod guides for the Raptor 60. Check out "Heliproz" or "Ron's Heliproz South". Part#PVO241/Rod Guide Collars:/Raptor 60/;code AcePVO241. Place these where they would go with the standard frame. Take note of proper orientation on the frame.This will space the push rod properly.
I also have carbon frames and use these collars for the front mounted rudder servo.
I hope this is of some small help
Regards
__________________

Here, when wanted
There, when needed
Everywhere, when looked for
LAMAR COOLEY is offline        Reply With Quote Quick reply to this message
Old 02-28-2013, 04:18 AM   #5 (permalink)
Registered Users
 
Posts: 1,323
Thread Starter Thread Starter
 

Join Date: Nov 2008
Location: Over here in Blighty
Default

Thanks Lamar - that is a great help.
Is there any way you could post a photo of how you have them fitted?
That would clinch it then.

Many thanks
Keith
__________________
Raptor 50 TitanSE - AR7200BX + RJX head
Raptor 550E with a flybar!!
Align 500 pro with Speed fuselage
mCPX V2
KeithT is offline        Reply With Quote Quick reply to this message
Old 02-28-2013, 10:31 AM   #6 (permalink)
Registered Users
 
Posts: 2,307
 

Join Date: Jan 2010
Location: NorCali (San Jose)
Default

Quote:
Originally Posted by LAMAR COOLEY View Post
Pick up a couple of rod guides for the Raptor 60. Check out "Heliproz" or "Ron's Heliproz South". Part#PVO241/Rod Guide Collars:/Raptor 60/;code AcePVO241. Place these where they would go with the standard frame. Take note of proper orientation on the frame.This will space the push rod properly.
I also have carbon frames and use these collars for the front mounted rudder servo.
I hope this is of some small help
Regards
Those are the frame spacers that I was talking about.
http://www.ronlund.com/mm5/merchant....cdb30b81738fc&
ticedoff8 is online now        Reply With Quote Quick reply to this message
Old 02-28-2013, 12:25 PM   #7 (permalink)
Registered Users
 
Posts: 1,323
Thread Starter Thread Starter
 

Join Date: Nov 2008
Location: Over here in Blighty
Default

Quote:
Originally Posted by ticedoff8 View Post
Those are the frame spacers that I was talking about.
http://www.ronlund.com/mm5/merchant....cdb30b81738fc&
Ahh - I didn't realise
Thanks as well

There are some on their way from the retailer.
What is the issue with the coupler?
__________________
Raptor 50 TitanSE - AR7200BX + RJX head
Raptor 550E with a flybar!!
Align 500 pro with Speed fuselage
mCPX V2
KeithT is offline        Reply With Quote Quick reply to this message
Old 02-28-2013, 03:32 PM   #8 (permalink)
Registered Users
 
Posts: 2,307
 

Join Date: Jan 2010
Location: NorCali (San Jose)
Default

The R90 G4 coupler is better.
The R60 / R90 "classic" is failure prone.
ticedoff8 is online now        Reply With Quote Quick reply to this message
Old 02-28-2013, 09:22 PM   #9 (permalink)
Registered Users
 
Posts: 386
 
My HF Map location
Join Date: Oct 2006
Location: Houma, Louisiana
Default R90 Tail Servo Problem

Keith T
O.K. Here you go http://manuals.bobbico.com/ttr/ttre0090-manual.pdf
The Raptor 90SE utilizes carbon frames.
Page 14 of the 90SE assembly shows these "Guides" (item #7) and their proper orientation.
While this does in fact "Space" the frame. It's purpose is to give the push rod, for a front mounted rudder servo, a "Guide" to keep it away from the main gear.
I have several Raptor 90's and have never had one of these parts, coupler or guide, "Fail" for any reason.
The key to the coupler is : 1.) use blue locktite on the set screws. 2.) make sure the two push rods are inserted equally into the coupler touching each other. 3.) do not over tighten the set screws to the point of stripping.
I hope this is of some small help
Regards
__________________

Here, when wanted
There, when needed
Everywhere, when looked for
LAMAR COOLEY is offline        Reply With Quote Quick reply to this message
Old 02-28-2013, 10:15 PM   #10 (permalink)
Registered Users
 
Posts: 2,307
 

Join Date: Jan 2010
Location: NorCali (San Jose)
Default

Yes, I've had a few Raptors too.
Now, the subject has shifted from the frame spacer / rod guides to the joint coupler that connects the front TR control rod to the back.
http://www.ronlund.com/rcheli-prod/T...ACEPV0168.html
The rod joint (item 8, part number BK105 on page 32 of your R60 manual) fails. I don't like it.
I changed to the R90 3D / SE servo mount, but I know the G4 uses the front mounted servo. And they use a different rod joint.
http://www.ronlund.com/rcheli-prod/T...ACEPV1588.html
I like this one.
Unfortunately, I can't find just the rod joint - it seems to come in the tail rotor control rod set only.

Last edited by ticedoff8; 03-01-2013 at 12:02 AM..
ticedoff8 is online now        Reply With Quote Quick reply to this message
Old 03-01-2013, 08:09 AM   #11 (permalink)
Registered Users
 
Posts: 1,323
Thread Starter Thread Starter
 

Join Date: Nov 2008
Location: Over here in Blighty
Default

Thanks fellas
The guide is fitted and works.
The clearance is only a whisker, but that's enough to do the job!
Keith
__________________
Raptor 50 TitanSE - AR7200BX + RJX head
Raptor 550E with a flybar!!
Align 500 pro with Speed fuselage
mCPX V2
KeithT is offline        Reply With Quote Quick reply to this message
Old 05-09-2016, 02:11 AM   #12 (permalink)
Registered Users
 

Join Date: Jun 2015
Location: Shanghai, China
Default Rudder Servo front problem

Quote:
Originally Posted by ticedoff8 View Post
How is that possible?
There are guide holes in the frame spacers that should route the control rod above the main gear.
Are you using the stock TT R90 rudder control rod (2 pieces)?

On a related note: Use the R90 G4 control rod coupler instead of the one that came with the R90 "classic".

BTW: I too have the TR caked a oil after every flight. But, I can't move it back to the front because I use the push-pull collective bellcrank upgrade. That takes the space the rudder servo would normally use.
I use a paper towel to clean up the airframe at the end of the day - and the servo gets extra attention.
Do you know why you can't move the rudder servo back to the front when you use the push-pull collective bellcrank upgrade in TT Raptor 90 3D?
Can you show me the picture of your servo tray?
I just bought Raptor 90 3D and want to build it with Rudder servo front.
yzsung is offline        Reply With Quote Quick reply to this message
Reply




Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the HeliFreak forums, you must first register.
Please enter your desired user name, your REAL and WORKING email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself. Use a real email address or you will not be granted access to the site. Thank you.
Email Address:
Location
Where do you live? ie: Country, State, City or General Geographic Location please.
Name and Lastname
Enter name and last name here. (This information is not shown to the general public. Optional)
Helicopter #1
Enter Helicopter #1 type and equipment.
Insurance
Please select your insurance company (Optional)
Helicopter #2
Enter Helicopter #2 type and equipment.
Helicopter #3
Enter Helicopter #3 type and equipment.
Helicopter #4
Enter Helicopter #4 type and equipment.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




Copyright © VerticalScope Inc. All rights reserved.
 

SEO by vBSEO 3.6.1