Go Back  RCU Forums > RC Airplanes > Beginners
 adjusting needle >

adjusting needle

Community
Search
Notices
Beginners Beginners in RC start here for help.

adjusting needle

Thread Tools
 
Search this Thread
 
Old 06-03-2009 | 09:42 AM
  #1  
Thread Starter
Member
 
Joined: May 2009
Posts: 86
Likes: 0
Received 0 Likes on 0 Posts
From: Fred, CANADA
Default adjusting needle

I<span class="Apple-style-span" style="color: rgb(0, 100, 0); font-family: Verdana; ">s there such a thing for rc planes that connects to the needle and you can adjust that way.. so it does not go with the risk of hitting your fingers.... I ask because the needle seems to be close to the prop.. very very close haha</span>
Old 06-03-2009 | 09:53 AM
  #2  
-pkh-'s Avatar
Senior Member
My Feedback: (2)
 
Joined: May 2004
Posts: 3,354
Likes: 0
Received 0 Likes on 0 Posts
From: Emmaus, PA
Default RE: adjusting needle

Many engines have a remote needle valve that is attached to the backplate of the engine. Others have the needle valve angled back from the prop (see photos below).
Attached Thumbnails Click image for larger version

Name:	Ol31319.jpg
Views:	18
Size:	19.7 KB
ID:	1211248   Click image for larger version

Name:	Lg15675.jpg
Views:	19
Size:	40.7 KB
ID:	1211249  
Old 06-03-2009 | 09:56 AM
  #3  
My Feedback: (1)
 
Joined: Mar 2003
Posts: 5,087
Received 7 Likes on 7 Posts
From: Over da rainbow, KS
Default RE: adjusting needle

Remote needle valves like on some OS engines, or angled needle valves that move it further back than the standard setup.  I've had some airplanes with the needle valve inside the cowl, so I had to kill the engine to change the setting.  Since you may only change the needle one or twice on any particular day, this worked OK once the initial setting was found.
Old 06-03-2009 | 10:07 AM
  #4  
 
Joined: Dec 2001
Posts: 7,816
Likes: 0
Received 10 Likes on 10 Posts
From: Upplands Vasby, SWEDEN
Default RE: adjusting needle

Hi!
You can mount the high speed needle nearly everywhere you like . Just cut it off /screw it off, from the carb and mount it on the fuselage.
Attached Thumbnails Click image for larger version

Name:	Nl30144.jpg
Views:	30
Size:	62.1 KB
ID:	1211260   Click image for larger version

Name:	Bw71425.jpg
Views:	25
Size:	38.2 KB
ID:	1211261  
Old 06-03-2009 | 11:04 AM
  #5  
brett65's Avatar
Senior Member
My Feedback: (18)
 
Joined: Dec 2007
Posts: 2,505
Likes: 0
Received 0 Likes on 0 Posts
From: Oklahoma City, OK
Default RE: adjusting needle

You can use one of these http://www3.towerhobbies.com/cgi-bin...?&I=LXCR79&P=7 if your needle valve has the hole down the center of it.
Old 06-06-2009 | 11:40 AM
  #6  
 
Joined: Jun 2007
Posts: 536
Likes: 0
Received 0 Likes on 0 Posts
From: Grand Blanc, MI
Default RE: adjusting needle

This was my solution to keeping my fingers out of the propeller. Icut the head off of a socket head screw and attached it the needle valve with JBweld. I can then use the correct size ball-end driver (I think it's 5/64) and hold it back at a pretty good angle away from the prop. Don't use a T-handle type driver, the extra leverage makes it very easy to over tighten the needle, which will ruin it.
Attached Thumbnails Click image for larger version

Name:	Sq45606.jpg
Views:	25
Size:	137.4 KB
ID:	1212714  
Old 06-06-2009 | 12:43 PM
  #7  
planebuilder66's Avatar
My Feedback: (8)
 
Joined: Nov 2003
Posts: 2,786
Likes: 0
Received 1 Like on 1 Post
From: Middletown, CT
Default RE: adjusting needle

If they don't make a remote needle adapter for your engine, you have 2 options, cruise OS needle valve assemblies in tower, find the same type setup but remote that can be adapted to your engine. Or simpler yet, just tune your engine one or two clicks at a time, shutting it down between adjusting.
Old 06-06-2009 | 01:14 PM
  #8  
Lnewqban's Avatar
 
Joined: Apr 2007
Posts: 4,057
Received 0 Likes on 0 Posts
From: South Florida
Default RE: adjusting needle

ORIGINAL: frenchdoor

.. so it does not go with the risk of hitting your fingers.... I ask because the needle seems to be close to the prop.. very very close haha

Frenchdoor:

At the beginning, I was very intimidated by the propeller rotating next to the valve.

My instructor taught me how to do it safely, always from behind the propeller, standing on the left side of the fuselage, with my left hand, while holding the model in place with my right hand.

Since then, I had no problem adjusting the valve next to the spinning knife, ........which I never disrespect.

The only real risk is to become overconfident and careless while doing this everyday action.

All very good advices above!
Old 06-06-2009 | 06:08 PM
  #9  
Senior Member
My Feedback: (13)
 
Joined: Jul 2005
Posts: 2,322
Likes: 0
Received 0 Likes on 0 Posts
From: Nutley, NJ
Default RE: adjusting needle

You can also take a piece of pushrod....slide it into the end of the needle and tighten in place with the allen screw thats in there. Bend the end at 90 degrees...and should make life a little easier.

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
Trackbacks are Off
Pingbacks are Off
Refbacks are On



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.