|
-
POSTING RULES

-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|

08-07-2015, 10:30 AM
|
|
|
|
Join Date: May 2012
Location: Los Angeles Coast
Posts: 65
|
|
McFarlane Aviation has high quality cables
I stopped by their booth at OSH They have a new throttle cable with a vernier adjustment. I was impressed with their quality. But, at this point they only list cables for the RV-10 and RV-12 in their catalogue. I am thinking about having them make custom cables for my RV-9A. I can find the lengths from Van's catalogue. If more of us request these cables I would think they would get added to their catalogue. The risk for me is that something doesn't fit properly. I need to remove the cowling and take pictures and measurements first.
|

08-07-2015, 10:56 AM
|
 |
|
|
Join Date: Jan 2010
Location: Denver, CO
Posts: 1,967
|
|
Quote:
Originally Posted by BMW_X6M
I stopped by their booth at OSH They have a new throttle cable with a vernier adjustment. I was impressed with their quality. But, at this point they only list cables for the RV-10 and RV-12 in their catalogue. I am thinking about having them make custom cables for my RV-9A. I can find the lengths from Van's catalogue. If more of us request these cables I would think they would get added to their catalogue. The risk for me is that something doesn't fit properly. I need to remove the cowling and take pictures and measurements first.
|
I also stopped by the McFarlane booth and was impressed by their cable knobs, especially the vernier-type throttle body. Are their cables rated to high heats? Anybody..?
|

08-07-2015, 11:28 AM
|
 |
|
|
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
|
|
Quote:
Originally Posted by ppilotmike
I also stopped by the McFarlane booth and was impressed by their cable knobs, especially the vernier-type throttle body. Are their cables rated to high heats? Anybody..?
|
Couldn't find a rating, but they claim this on their web pages -
Special Lubrication
During assembly the McFarlane controls have a special life-time lubrication applied to critical sliding surfaces. This molybdenum disulfide and Teflon based lubricant with a synthetic grease base has been specially formulated to reduce friction and prevent galling and contamination locking of the control components from -70 F to over 1000 F.
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
|

08-07-2015, 05:57 PM
|
 |
|
|
Join Date: Jul 2009
Location: Mojave
Posts: 4,652
|
|
That tells me that the cable may burst into flames, but at least the grease will still be good. Not much of a consolation.
__________________
WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.
Michael Robinson
______________
Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
|

08-08-2015, 06:24 AM
|
 |
|
|
Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,692
|
|
Vendor Datapoint
All 3 cables (Throttle, Mix, Prop) I received from Vans approx 2010 for my 7A with -M1B were of ACS Products construction. I don't remember the ACS part numbers exactly but they were "custom" because of a "V" at the end of the part number. Upon review it appeared that the customization was inclusion of the polymer external sheath.
__________________
Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
|

08-08-2015, 08:10 AM
|
|
|
|
Join Date: May 2008
Location: Sacramento
Posts: 377
|
|
cable failure
I had a prop governor cable go bad. Started getting sticky until it finally would not move. Cut it open to see what made it fail. The teflon or what ever the plastic type material is came loose at the end not near any heat but at the quadrant. It sort of raveled internally until it was jammed. I had to cut in a lot of pieces each time it was easy to move until I got to the end that was raveled. It appears to be pressed on with the crimp and thats what failed.
__________________
Horse Power is good, more is better and
Too Much is Just Right
RV 8 Super charged Barrett IO-390
Dues paid 2020
Dan "Nordo" West
|

10-05-2015, 03:31 PM
|
 |
|
|
Join Date: May 2007
Location: Gearhart Oregon
Posts: 235
|
|
My mixture control has become very stiff until the engine warms up.
I'll be pulling the cowl soon so I can disconnect the cable end from the carb, that way I can see if it's the carb arm that's stiff or the cable. But in the meantime I was wondering if anyone knows whether this kind of thing could be something like a bad o-ring or ?? in the carb?
Because most of the posts here mention sticking in spots etc. but mine is just really stiff throughout the full range, until it warms up then it's fine.
1200 hrs on the cable and carb, btw.
__________________
Randall Henderson
RV-6 / O-360 / CS, 1500+ hrs, 1st flight Sept. 1999
Airport committee chairman & ASNV for Seaside, OR Municipal (56S), www.seasideairport.org
Donated August 2020
|

12-02-2015, 01:51 PM
|
|
|
|
Join Date: Jun 2015
Location: Alberta
Posts: 84
|
|
Quote:
Originally Posted by rv6n6r
My mixture control has become very stiff until the engine warms up.
I'll be pulling the cowl soon so I can disconnect the cable end from the carb, that way I can see if it's the carb arm that's stiff or the cable. But in the meantime I was wondering if anyone knows whether this kind of thing could be something like a bad o-ring or ?? in the carb?
Because most of the posts here mention sticking in spots etc. but mine is just really stiff throughout the full range, until it warms up then it's fine.
1200 hrs on the cable and carb, btw.
|
What did you find? Mine is exactly the same. First couple of pushes of the throttle, before engine start, is so stiff it will hardly move. Four or five pushes its moving freely and works smoothly the rest of the flight.
I'm wondering about getting a new cable or did you find an issue at the carb?
__________________
RV-6A slow build,
serial # 21681. First flight March 1993
Dec 2019 donation paid
|

12-14-2015, 08:03 PM
|
|
|
|
Join Date: Aug 2011
Location: Whitefish Bay, WI
Posts: 5
|
|
My recommendation is to replace the cables once they become hard to move. I remember reading this thread a year or so ago and thinking at some point I'll need to replace the cable, because mine were getting hard to move. A few weeks ago I went up for some pattern work and on the second time around I noticed I was faster than I expected on final, and did a low pass instead of a touch and go. On the third time around I couldn't slow the plane down and called the tower and reported I would have to do a dead stick landing. I pulled the mixture to full lean on final but the engine wouldn't stop because it still had too much fuel, so I had to turn off the ignition on short final. I crossed the numbers at about 130 knts and was lucky to have a long runway to bleed off speed, but it was a wild ride. Ironically I had ordered new cables to install "soon" and had them sitting at home. I was surprised how easily the new cables worked once I installed them. I hadn't realized how bad the old ones were. When the planes talks to you, listen.
|

12-17-2015, 04:08 PM
|
|
|
|
Join Date: Jan 2008
Location: Ashland, OR
Posts: 2,574
|
|
insulating cables at hot spots
Since this tread got revived, I wanted to add something about using firesleeve insulation on throttle and mixture cables where they pass hot spots on the engine.
Ironflight and a couple of others commented earlier about the insulation slowing the heat flux but still reaching the ambient temperature eventually.
While this is certainly true of heat-soaking the entire length of the cable to the ambient temperature of the engine compartment, it is not quite right when applied to a localized region of higher temperature.
By putting insulation (fire sleeve or other) on the cable, you reduce the heat flux in. There is still axial conduction of heat along the cable from a hot area to a cooler area, and heat rejection off of the cable into that cooler area. The equilibrium temperature of the cable at the hot spot will be lower with the insulation slowing the rate of heat flux.
Absolutely the best first thing to do near hot spots is use a radiation heat shield. But in addition, it WILL help to reduce the peak temperature of the cable at the hot spot to cover that section of cable with fire sleeve. Away from the hot spot, leave the cable bare so as not to impede the heat rejection back into the engine compartment from the cable.
__________________
Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet"
Hobbs 625
LS6-15/18W sailplane SOLD
bought my old LS6-A back!! 
VAF donation Jan 2020
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 06:31 AM.
|