01 May 2025, 03:52 [ UTC - 5; DST ]
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Post subject: R-1340 Overhaul  Posted: 29 Apr 2025, 23:57 |
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Joined: 12/25/16
Posts: 154
Post Likes: +12
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What’s the latest on 1340 overhauls? I heard a rumor that Covington was out of the business but their website says otherwise. What other options? Tulsa? Anything else? Do any offer exchanges? Thanks!
Last edited on 30 Apr 2025, 18:40, edited 1 time in total.
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Post subject: Re: R-1430 Overhaul Posted: Yesterday, 07:08 |
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Joined: 01/10/17
Posts: 2120
Post Likes: +1545
Company: Skyhaven Airport Inc
Aircraft: various mid century
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Avoid at all costs any radial with components balance by Barrett.
I have a R-985 down at Younkins now getting the crank rebalanced. They said that last year they rebalanced 10 or more that were 100 grams out and one 1340 was 200 grams out. All balanced by Barrett.
It got so bad they tried to give Barrett the formula so they could get it right but they still do it some other way and it's causing a lot of issues.
2nd order vibrations (2 per revolution) so a dynamic propeller balance will NOT fix the problem.
The balancer may find a solution but it does not fix the vibration and in some cases makes it worse.
This has been an issue for 15 or more years and it really should be stopped. If you wonder why some run smooth and others in the same airframe type vibrate the pitot tubes and stick all the time this is it. It has caused me hours and hours of trouble shooting and attempts at fixes. Pulling the engine 3 times to send back Tulsa. Pulling cylinders to try different pistons, wrist pins etc. Changing all accessories, changing engine mounts. Multiple propellers 2 and 3 blade.
It's been a nightmare.
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Post subject: Re: R-1430 Overhaul Posted: Yesterday, 10:38 |
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Joined: 12/16/09
Posts: 7194
Post Likes: +2084
Location: Houston, TX
Aircraft: BE-TBD
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Username Protected wrote: What’s the latest on 1430 overhauls? I heard a rumor that Covington was out of the business but their website says otherwise. What other options? Tulsa? Anything else? Do any offer exchanges? Thanks! Did you mean R-1340?
_________________
AI generated post. Any misrepresentation, inaccuracies or omissions not attributable to member.
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Post subject: Re: R-1430 Overhaul Posted: Yesterday, 18:41 |
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Joined: 12/25/16
Posts: 154
Post Likes: +12
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Username Protected wrote: What’s the latest on 1430 overhauls? I heard a rumor that Covington was out of the business but their website says otherwise. What other options? Tulsa? Anything else? Do any offer exchanges? Thanks! Did you mean R-1340?
Yes, got dislexic there!
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Post subject: Re: R-1430 Overhaul Posted: Yesterday, 19:20 |
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Joined: 07/22/14
Posts: 9997
Post Likes: +19847
Company: Mountain Airframe LLC
Location: Mena, Arkansas
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Username Protected wrote: Did you mean R-1340? Yes, got dislexic there!
Same here, enough that I didn’t even notice 
Back to Charlie saying he had one at Younkin…….I was in Fayetteville Arkansas about 12 years ago and got to meet Kenny. Although I’d done some work for a Bobby Younkin, I’d never tried to put them together. I had bought some King Air manuals on eBay and the seller suggested he could get them to Kenny for free if I could pick them up there.
There was an aviation related auction near there, so it was an easy decision. I got to meet Kenny and get the full tour of his shop. I don’t know much about nothing, especially radial engines, but if I needed to have a radial overhauled, I’d be sending it his way. Very impressive shop and history there too. He’ll talk your ear clean off even if you only look halfway interested in what he’s saying.
_________________
If a diligent man puts his energy into the exclusive effort, a molehill can be made into a mountain
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Post subject: Re: R-1340 Overhaul Posted: Yesterday, 20:21 |
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Joined: 12/25/16
Posts: 154
Post Likes: +12
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Heard great things about Younkin, however they say currently 18 month lead time for overhaul. Either need to send them a core or $12k to hold a spot for that.
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