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carb heat cable - no wear 250 hrs

A5555

Well Known Member
carb heat cable - no wear 525 hrs.

So far I cannot detect any wear on my carb heat cable, 250 hrs. Two attachments at FAB and bent wire tang at the lever seems to be working to minimize vibration.

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I couldn't detect any hinge wear by hand. Will I be able to feel hinge wear? How best to do the check? With the wire tang the carb heat flap is loaded in the up position, meaning it's tight in up position.

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You should be able to feel play in the hinge after 1,000 hours. Expect door wear too.





I replaced hinge with baffle rubber and fabricated new door. It's showing wear again one thousand hours later :eek:
 
You should be able to feel play in the hinge after 1,000 hours. Expect door wear too.

I replaced hinge with baffle rubber and fabricated new door. It's showing wear again one thousand hours later :eek:

Me too, and ditto! My carb heat door is currently in real need of replacement.
 
Me too, and ditto! My carb heat door is currently in real need of replacement.


Scott I replaced the hinge with rubber per your method couple years ago. Less wear but still... Do you have other idea to reduce it? :)
 
carb heat cable - no wear 320 hrs

I removed the washer for closer inspection. still no wear.

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carb heat cable - no wear, 450 hrs

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cleaned the K&N filter by spraying thru the front the of the inlet, this doesn't replace the full disassembly cleaning but temporarily better, water and oil drain at the aft hole the FAB

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removed Kansas wheat, flying low, I didn't notice any abnormal CHT or oil temp
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650 hrs condition inspection

still, not much carb heat cable wear

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30 rpm drop with carb heat as checked yesterday. I needed carb heat last week. 15C - 20C with high humidity is this engine sensitive temperatures.

no wear that I can detect since new.

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air filter is beginning to shrink but looks OK and is tight to top and bottom

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some green stuff in the manifold pressure line?

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why are the brakes lines blue next to the hydraulic cylinders?

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a couple of other shots under.... green stuff in the manifold pressure line low spot

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looks like I lost a grommet on a brake line. maybe this is a good way to do an inspection. take pictures and look at it later and take notes. pre-buy inspection guys, do you agree?

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After having my carb heat door assy wear badly I replaced my carb heat cable with a button-lock cable, an Aircraft Spruce A-700. When the carb heat is off, the door is now tight against the housing and doesn't vibrate. That has really helped.
The button-lock cable will also hold a partial heat setting for carbureted lean-of -peak operation.
 
My non-RV has an ARB Carb Ice Detector from Spruce. It reliably tells me when ice is beginning to form. Small amounts of carb heat can clear it at that point, so your locking cable is a good idea.

Thanks!

Dave
 
700 hrs - no detectable wear on linkage

seems to be holding up well. all original except for cotter pin. baffle mat'l has slight wear on the pilot side.

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I ended all the issues with the wire Push Pull cable by going to a cable with a threaded end. I use a rod end fitting. No Mickey Mouse issues. This is an important control and this isn't a place compramise.
 
I ended all the issues with the wire Push Pull cable by going to a cable with a threaded end. I use a rod end fitting. No Mickey Mouse issues. This is an important control and this isn't a place compramise.

What did you use to replace the push pull cable? I have had problems with my carb heat cable (wore out the hole in the door lever and now the cable broke).

Thanks,
Dan
 
my cable and everything else here is original. 850 hrs. no wear. perfect condition.
 
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