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

*Adjusting The High Speed Needle Inside A Cowl*

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

*Adjusting The High Speed Needle Inside A Cowl*

Reply

Old 03-07-2006, 06:47 PM
  #1  
Zippi
Senior Member
Thread Starter
My Feedback: (10)
 
Zippi's Avatar
 
Join Date: Jun 2004
Location: Evansville, IN
Posts: 4,970
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default *Adjusting The High Speed Needle Inside A Cowl*

Does anyone have a pic of something that has been made up to adjust the high speed needle valve through a cowl? This is on the new OS 120AX. It comes with a small dia. wire and thumb screw to attach to the needle valve but with the needle valve being slanted it makes it difficult to take the cowl off and on in this application. I need to be able to just stick something through the cowl and attach to the needle valve to make the adustment and then remove it.
Zippi is offline  
Reply With Quote
Old 03-07-2006, 07:05 PM
  #2  
bbbair
Senior Member
 
Join Date: Jan 2003
Location: Belleville, ON, CANADA
Posts: 963
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: *Adjusting The High Speed Needle Inside A Cowl*

Correct me if I'm wrong - but that wire and thumb screw should attach to the high speed needle.

On most engines of that size there is a hole drilled into the HS Needle, and on the side there is a small Allen head screw.
-Back off the screw, insert the wire and tighten the screw back up,
-Now see how much of the wire is needed to exit the cowl (about 1/4" outside of the cowl), trim to suit.
-Attach the thumb wheel - it should have an Allen screw too.

Now drill a hole in the cowl to accommodate the Thumb wheel and install the cowl.

Problem solved!!
bbbair is offline  
Reply With Quote
Old 03-07-2006, 07:21 PM
  #3  
Zippi
Senior Member
Thread Starter
My Feedback: (10)
 
Zippi's Avatar
 
Join Date: Jun 2004
Location: Evansville, IN
Posts: 4,970
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: *Adjusting The High Speed Needle Inside A Cowl*

Yes, the wire and thumb screw attach to the high speed needle but I was looking for another option as stated above. Thanks anyway.
ORIGINAL: bbbair

Correct me if I'm wrong - but that wire and thumb screw should attach to the high speed needle.

On most engines of that size there is a hole drilled into the HS Needle, and on the side there is a small Allen head screw.
-Back off the screw, insert the wire and tighten the screw back up,
-Now see how much of the wire is needed to exit the cowl (about 1/4" outside of the cowl), trim to suit.
-Attach the thumb wheel - it should have an Allen screw too.

Now drill a hole in the cowl to accommodate the Thumb wheel and install the cowl.

Problem solved!!
Zippi is offline  
Reply With Quote
Old 03-08-2006, 12:37 AM
  #4  
Gremlin Castle
My Feedback: (14)
 
Join Date: Feb 2004
Location: Arlington, TX
Posts: 1,467
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: *Adjusting The High Speed Needle Inside A Cowl*

Grind the threaded area of a 4-40 or 6-32 socket head capscrew down to the wire size and stick it in the needel valve instead of the wire. Then stick a ball driver down thru the hole in the cowl into the socket head to adjust the needle valve.
Been using that method for the last 15 years with no problem.
Gremlin Castle is offline  
Reply With Quote
Old 03-08-2006, 05:41 PM
  #5  
Zippi
Senior Member
Thread Starter
My Feedback: (10)
 
Zippi's Avatar
 
Join Date: Jun 2004
Location: Evansville, IN
Posts: 4,970
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: *Adjusting The High Speed Needle Inside A Cowl*

Now that's what I was looking for . Thank's for the info Gremlin Castle.
ORIGINAL: Gremlin Castle

Grind the threaded area of a 4-40 or 6-32 socket head capscrew down to the wire size and stick it in the needel valve instead of the wire. Then stick a ball driver down thru the hole in the cowl into the socket head to adjust the needle valve.
Been using that method for the last 15 years with no problem.
Zippi is offline  
Reply With Quote
Old 03-08-2006, 07:47 PM
  #6  
daveopam
My Feedback: (9)
 
daveopam's Avatar
 
Join Date: Oct 2002
Location: ELK CITY, OK
Posts: 7,466
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: *Adjusting The High Speed Needle Inside A Cowl*

I just did one kind of like Gremlin said. Instead of grinding the bolt down I drilled and tapped the end of the high speed needle. Then Loc-tighted it and put the set screw back in. I can get the ball driver in then run the motor up and tach it. Works great.


David
daveopam is offline  
Reply With Quote

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