Airborne 212CW-6 vacuum pump

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Airborne 212CW-6 vacuum pump

Postby Lee » Wed Apr 19, 2017 4:04 am

Hi ... first, I appreciate the help I have been getting regarding our '54B back in the air! Further question: I have an STCd Airborne vacuum pump installation. I may have to overhaul/replace the pump. Any ideas on who has a replacement or can overhaul or provide overhaul parts? The pump was fine the last time the bird flew 9 years ago but, the IA I have been working under thinks it might be a good idea to go ahead and update the pump ... an "amusing" project if the engine is buttoned up. Note that as near as I can tell, the 212CW-6 is a bit odd as the shaft uses a woodruff keyed shaft instead of a splined shaft. Thanks! Regards, Lee (N1967C)
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Re: Airborne 212CW-6 vacuum pump

Postby Bruce Fenstermacher » Wed Apr 19, 2017 12:00 pm

Lee, let us know what you find to replace it. I believe the popular opinion is those pumps are no longer available new at any price.
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Re: Airborne 212CW-6 vacuum pump

Postby Lee » Wed Apr 19, 2017 12:09 pm

Will do ...I have yet too see a problem that could not be solved and there is bound to be a work-around on this one!
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Re: Airborne 212CW-6 vacuum pump

Postby flyboy122 » Thu Apr 20, 2017 1:44 am

Lee wrote:Will do ...I have yet too see a problem that could not be solved and there is bound to be a work-around on this one!



Lee, absolutely. In this case you solve it by chucking the vacuum pump and replacing the gyros with the STC'd Garmin or Dynon units. It's an order of magnitude more cost, but something worth considering if you actually fly IFR. Vacuum pumps fail with frightening regularity, and something like 30% of failures in IMC are fatal. (And if you don't fly in IMC, why have it in the first place.)

Yes, my plane has vacuum gyros. Yes, they scare the heck out of me. Yes, when it craps out I won't replace it. No, I'm not comfortable flying IMC in it. And yes, millions of pilots have flown millions of hours behind vacuum pumps. Lots of people used buggy whips too.

DEM
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Re: Airborne 212CW-6 vacuum pump

Postby Dennis » Thu Apr 20, 2017 2:10 am

Hi Lee, Tempest will make you a brand new 212CW-6 vacuum pump. Look them up on the internet for contact info. Let us know this adventure works out. Regards, Dennis
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Re: Airborne 212CW-6 vacuum pump

Postby mit » Thu Apr 20, 2017 4:00 am

I have one and would be very interested what you find out! The crashes are not due to vacuum pump failure. They are due the inability of the pilot to deal with the failure. Risk management.
Tim
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Re: Airborne 212CW-6 vacuum pump

Postby flyboy122 » Fri Apr 21, 2017 2:10 am

mit wrote: The crashes are not due to vacuum pump failure. They are due the inability of the pilot to deal with the failure.


Correct. Sit in a room full of pilots and ask "raise your hand if you consider yourself an above average pilot?" Just about all of them will. Yet 1 out of 3 won't be able to handle a vacuum pump failure when it counts.

I'm not trying to be a chicken little here. Just providing a different perspective.

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Re: Airborne 212CW-6 vacuum pump

Postby mit » Fri Apr 21, 2017 3:13 am

flyboy122 wrote:
mit wrote: The crashes are not due to vacuum pump failure. They are due the inability of the pilot to deal with the failure.


Correct. Sit in a room full of pilots and ask "raise your hand if you consider yourself an above average pilot?" Just about all of them will. Yet 1 out of 3 won't be able to handle a vacuum pump failure when it counts.

I'm not trying to be a chicken little here. Just providing a different perspective.

DEM

Ok here is the other one, they should not have been there in the first place, if they where not ready for the possibility of a failure, again pilot problem not pump problem..................
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Re: Airborne 212CW-6 vacuum pump

Postby flyboy122 » Sat Apr 22, 2017 1:12 am

mit wrote:

Ok here is the other one, they should not have been there in the first place, if they where not ready for the possibility of a failure, again pilot problem not pump problem..................


Yes, and since we've failed to fix the pilot problem for 75 years let's fix the pump problem!

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