My throttle control has been giving problems by sticking at low power settings - not what you need if a bit more power is required on short final
The throttle friction bushes were badly worn and have now been removed. This has solved the sticking problem to a large extent but now there is no throttle friction adjustment and the control is still a bit "sticky" dispite generous lubrication.
Has anyone had to replace a throttle control recently?
Would the Broadie's control be a suitable replacement?
Are there any other sources of throttle control?
Aircraft Spruce has a whole selection of throttle cables manufactored by ACS. It states in there catalog that - "The manufacturing and inspection procedures have been approved by the FAA and original equipment manufacturers." I guess this is another way of saying FAA/PMA? The most expensive is about $65 depending on length.
They have part # AS0411091-2 for $237.95, or
a generic throttle control part #A-800-12 for C150/152/172 (but do not include C170 in their list) for $110.95
PS The price on the McFarlane control should read $237.88.
David, your right. Under Spruce's "Cessna parts" section they say that the throttle cables I mentioned are NOT FAA approved, except for the A-800 whch is approved for C150,152,172. I also must have a older catalog, as the price just a few months ago was $52.00 for the 6 foot A-800.
I think you can get McFarland to build it with the steel sleeve that is at the firewall to be located anywhere you want it in case your routing is a little different. I would suggest you at least send measurements of your old one when ordering a new cable. Several times I've bought a replacement that has the steel sleeve in a different location than what it replaced. Also consider the sleeve for the housing clamp at the carb end.
In an old Beech 18 manual, they recommend using a mixture of naptha and graphite in a small agricultural sprayer. Connect it to the carb end with a hose and clamps and have somebody work the throttle back and forth until the mix makes it to the panel. I have done it on an 18 and it is very effective. I think that you could do the same with an aerosol can of graphite. If you drilled a hole in the spray nozzle so that the graphite came out the end where you put your finger to spray and connected that with a hose and clamps, that should accomplish the same. Its worth a try as a can of graphite spray is not too expensive and you don't have to change the cable.
McFarlane shows the early C-170B throttle cable (p/n MC0411091-2) costs $354. The later C-170B's throttle cable (p/n MCS1222-2S) costs $199. Are these cables that much different? Why the big difference in cost? Maybe because Cessna no longer offers the early 170B throttle?
Throttle.jpg
You do not have the required permissions to view the files attached to this post.
I had a throttle cable failure a few years ago. I removed it and sent it to McFarland, and they returned the new, exact copy, throttle cable within a week. I realize Perth is a little further away than Alaska, but you will get a exact copy of what you have, and operational, very smooth.
Cessna® is a registered trademark of Textron Aviation, Inc. The International Cessna® 170 Association is an independent owners/operators association dedicated to C170 aircraft and early O-300-powered C172s. We are not affiliated with Cessna® or Textron Aviation, Inc. in any way.
