Go Back  RCU Forums > RC Airplanes > Questions and Answers
Reload this Page >

Metal Throttle Arms & Linkages

Notices
Questions and Answers If you have general RC questions or answers discuss it here.

Metal Throttle Arms & Linkages

Old 03-29-2010, 06:05 PM
  #1  
DeferredDefect
Senior Member
Thread Starter
 
DeferredDefect's Avatar
 
Join Date: Nov 2009
Location: , ON, CANADA
Posts: 974
Likes: 0
Received 0 Likes on 0 Posts
Default Metal Throttle Arms & Linkages

Hello !

I just finished my Tiger 60 kit, and have come to the throttle linkage installation.
The engine, a Thunder Tiger 61 Pro, has a metal throttle arm, with a few pre drilled holes for the linkage.
Unfortunatly, the holes in the arm are too small for a conventional plastic link (can't use metal), and the link can't be drilled out - the arm is only just big enough for the holes to begin with!

As of now, the only link Ican fit is a thin music wire zed bend.

Any suggestions on making it work?


Thank you,

Graeme
Old 03-29-2010, 07:07 PM
  #2  
MinnFlyer
Senior Member
My Feedback: (4)
 
MinnFlyer's Avatar
 
Join Date: Apr 2002
Location: Willmar, MN
Posts: 28,519
Likes: 0
Received 5 Likes on 5 Posts
Default RE: Metal Throttle Arms & Linkages

DuBro has a micro ball link that will be perfect

http://www.shopatron.com/products/pr...=929/101.0.1.1
Old 03-29-2010, 08:03 PM
  #3  
tailskid
My Feedback: (34)
 
tailskid's Avatar
 
Join Date: Nov 2001
Location: Tolleson, AZ
Posts: 9,486
Received 4 Likes on 4 Posts
Default RE: Metal Throttle Arms & Linkages

Mike, you are good!
Old 03-29-2010, 08:07 PM
  #4  
RCKen
RCU Forum Manager/Admin
My Feedback: (9)
 
RCKen's Avatar
 
Join Date: Jul 2002
Location: Lawton, OK
Posts: 27,242
Likes: 0
Received 13 Likes on 11 Posts
Default RE: Metal Throttle Arms & Linkages


ORIGINAL: tailskid

Mike, you are good!
Shhhhhh, don't tell him that. His ego is big enough already!!!!

Ken
Old 03-29-2010, 08:13 PM
  #5  
MinnFlyer
Senior Member
My Feedback: (4)
 
MinnFlyer's Avatar
 
Join Date: Apr 2002
Location: Willmar, MN
Posts: 28,519
Likes: 0
Received 5 Likes on 5 Posts
Default RE: Metal Throttle Arms & Linkages

Old 03-29-2010, 08:44 PM
  #6  
DeferredDefect
Senior Member
Thread Starter
 
DeferredDefect's Avatar
 
Join Date: Nov 2009
Location: , ON, CANADA
Posts: 974
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Metal Throttle Arms & Linkages

Thanks guys!
Old 03-30-2010, 08:49 AM
  #7  
JohnBuckner
My Feedback: (1)
 
JohnBuckner's Avatar
 
Join Date: Dec 2001
Location: Kingman, AZ
Posts: 10,441
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Metal Throttle Arms & Linkages

For what its worth never ever use a Z bend in a metal throttle arm, that is a ticking time bomb especially with 72Mhz. Its only a matter of time before the Z bends wear the metal hole sufficiently to start producing vibration induced stray RF.

Ball joints are fine however my normal pushrods I always setup with thin flexible piano wire around 30 thousandths and solder on threads with a nylon clevis and an EZ juster at the servo arm. . I have used many of the 40 TT Pro (in pylon) and still have a few of the .61 which uses the same throttle arm and do not recall any problem using nylon clevis in the trottle arm that a simple chasing of the hole with a 1/16th bit would not cure. Also if I remember correctly of the two factory holes in the TT throttle arm the inner hole is for whatever reason a bit smaller than the outer hole. If you are using that inner hole I would reccomend you instead use the outside hole.

It provides the best mechanical advantage with average servo arms to best setup your throttle endpoints without resorting to excessive electronic endpoint reductions which reduce response resolution.

John
Old 03-30-2010, 03:43 PM
  #8  
DeferredDefect
Senior Member
Thread Starter
 
DeferredDefect's Avatar
 
Join Date: Nov 2009
Location: , ON, CANADA
Posts: 974
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Metal Throttle Arms & Linkages

Thanks John -
I don't believe that the throttle arm on my engine is original - I picked it up for five bucks at a garage sale (Ok, grabbed it when I saw the price, and made sure no-one else was out to get it! ).

I tried every linkage that I have laying around, and they are all far to big. I am using the outer hole, so that shouldn't be a problem, but the fact that I can't enlarge it is. There is almost no material outside the hole, but it is still very strong.

I think I will order the Du-Bro part - it looks perfect, just means I have to wait longer to fly it!

Thank you

Graeme

Posting Rules
You may not post new threads
You may not 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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.