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Solid Wire - Square Knob

FAQs for "Solid Wire - Square Knob"

Frequently Asked Questions

How do I clean and sanitize a McFarlane Push-Pull Control?

We make the following cleaning and sanitizing recommendations to be completed between flights:

 

Recommended Cleaning Process

1. Put on clean disposable gloves prior to cleaning and disinfection.

2. Pull controls back to the fully retracted position to expose the full length of the control shafts.

3. Apply isopropyl alcohol to a clean microfiber towel. Do not spray any solution directly on the controls or any other surfaces or components in the aircraft.

    !!! WARNING: DO NOT USE BLEACH WIPES ON ANY MCFARLANE CONTROL !!!

4. Gently and thoroughly wipe down every control knob surface and control shaft.

5. Let cleaning solution dry on these surfaces (contact time).

6. Use a clean and dry microfiber cloth to wipe away any solution residue left on knob and control shaft surface.

7. Remove all gloves, towels, and cleaning supplies from the work area in the aircraft.

 

Please contact McFarlane Sales directly at 866-920-2741 or 785-594-2741 or sales@mcfarlaneaviation.com if you have any additional questions regarding the disinfection of our controls.

How do I trim my engine control to length?

Please reference the Installation Instructions included with your new control.

I purchased a laser engraved knob and the thickness of the marking is very shallow. What kind of wear resistance can I expect?

The laser marking does not harm the hard durable anodize coating on the aluminum knob. The CO2 laser process only bleaches the color from the anodizing leaving a silver white color that contrasts with the surrounding dyed anodize. The durability of the laser marked area is not affected by the laser. Our tests have shown that the laser process actually improves the corrosion resistance of the anodize layer. The CO2 laser engraves aluminum knobs by vaporizing the surface leaving a deep durable groove. This groove is then filled with a special paint for contrast. The result is a durable long lasting mark.

What is the minimum bend radius for my engine control?

McFarlane's Storage and Packaging Specification requires a specific packaging minimum radius based on the length of the control, type of wire used, and the configuration of the control end(s). Please contact us to determine the exact requirements for your specific control.

MC6160 Universal Push to Unlock Controls

Ideal for carburetor heat or alternate air control 

  • Perfect for homebuilt or custom projects
  • Quality stainless steel construction 
  • High temperature Teflon lined conduit for smooth, consistent control 
    (Cheapy controls with poly liners will not tolerate engine temperatures)
  • Heavy duty for strength and long life
  • Available in 6, 8, 12 foot and custom lengths
    • May be trimmed to length
  • Anodized aluminum square knobs 
    • Meets FAA Regulation 23.781 for cockpit control knob shape for carburetor heat or alternate air 
    • Available with black knob and black or clear (silver) anodized aluminum push-button
  • Universal Push-to-Unlock Control Specifications  

Specifications:

  • Conduit:  0.24 inch OD Teflon lined wound conduit 
  • Inner wire:  0.071 inch diameter music wire
  • Travel (stroke):  3 inch maximum
  • Maximum work loads:  25 lbs (Pull), ~10 lbs* (Push)
  • Minimum locking force:  15 lbs
  • Operating temp:  -65 to 450 deg F **

* Max push load dependent on wire size, length of trimmed wire (unsupported by conduit), geometry of wire rigging, and configuration of actuator

** Operating temperature of knob/guide tube assembly: -65 to 250 deg F

Custom Engraved Knobs:

Custom laser marking of the knobs is available for $25.00 per knob. Receive a $15.00 discount for each additional knob with the same design. Please call 866-920-2741 or email timp@mcfarlaneaviation.com for details.

Engraving Request Form

               

These controls are not for use on certified aircraft, or for use for flight controls or flight control trim tabs. 

Why choose McFarlane?

OUR PARTS ARE ENGINEERED TO LAST LONGER WHILE SOLVING KNOWN SAFETY ISSUES

OVER 40,000 PARTS IN STOCK WITH SAME DAY SHIPPING IF ORDERED BY 3PM

OUR TEAM PROVIDES THE OLD-FASHIONED CUSTOMER SERVICE THAT YOU EXPECT

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Center of the US for Fast Shipping

Contact Us

We love a challenge. Whatever your problem, we’ll help you find a solution. If you’re ready to experience the McFarlane Difference, fill out the convenient contact form or give us a call at the number below. We can’t wait to help!

1-866-920-2741

McFarlane Staff

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