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  Topic: Cylinder sizes with M 14 engines
GeorgeCoy

Replies: 1
Views: 269

PostForum: Yak-List   Posted: Mon Mar 21, 2022 5:00 am   Subject: Cylinder sizes with M 14 engines
The Motorstar Factory in Romania still produces new cylinders. They have had some success in installing new cylinder barrels as well. They are currently working on the Nikasil process.
Barretts has ...
  Topic: Wing mount bore reaming
GeorgeCoy

Replies: 1
Views: 368

PostForum: Yak-List   Posted: Thu Jan 27, 2022 9:17 am   Subject: Wing mount bore reaming
I believe that they had the fuselage and wings in jigs and reamed the holes
in that position. I saw this process on the Yak 52's at the factory.
Probably your best option is to align the old holes ...
  Topic: Housai engines
GeorgeCoy

Replies: 0
Views: 410

PostForum: Yak-List   Posted: Thu Jan 27, 2022 6:37 am   Subject: Housai engines
Due to recent demands for the overhaul of the Chinese HS6A engines, SC Motorstar SA of Bacau Romania has agreed to overhaul the HS6A engines. They have overhauled the Russian AI-14RA engines in the pa ...
  Topic: Electrical system Yak-18T
GeorgeCoy

Replies: 4
Views: 536

PostForum: Yak-List   Posted: Sat Jan 22, 2022 3:55 am   Subject: Electrical system Yak-18T
The 36 V AC and the 115 V AC systems run to the gyros and some of the radios.
George Coy

Sent from my iPad

On Jan 22, 2022, at 12:27 AM, RodLovell <grumpyoldman2@gmail.com> wrote:

...
  Topic: M9/M9F/M9-35M magneto differences
GeorgeCoy

Replies: 6
Views: 668

PostForum: Yak-List   Posted: Fri Jan 07, 2022 1:09 pm   Subject: M9/M9F/M9-35M magneto differences
Date: 23 November 2001

Russian Magnetos, Ignition Systems and Timing Them
By George Coy
I have been asked many times to explain the ignition systems on the M-14P engines and their cousins the M14 ...
  Topic: Yak-List Digest: 6 Msgs - 09/27/21
GeorgeCoy

Replies: 4
Views: 487

PostForum: Yak-List   Posted: Tue Sep 28, 2021 11:01 am   Subject: Yak-List Digest: 6 Msgs - 09/27/21
I am presently out of the overhauled compressors, but Rhonda at Barretts Precision Engines may have them. They are setting up to overhaul tm as well.  I think Jill at M14P inc can overhaul them as we ...
  Topic: Asz 621
GeorgeCoy

Replies: 0
Views: 418

PostForum: Yak-List   Posted: Thu Aug 26, 2021 1:05 pm   Subject: Asz 621
I am looking for a new old stock or an overhauled old stock Antonov-2 engine. Asz-621 series 14, 15 or 16. Any leads would be appreciated.
George Coy
MotorstarNA
  Topic: Engine roughness at low power, 82% RPM?
GeorgeCoy

Replies: 10
Views: 1850

PostForum: Yak-List   Posted: Fri Jul 02, 2021 5:48 pm   Subject: Engine roughness at low power, 82% RPM?
You could use a propane torch but don’t lite the torch. Just use it like a sniffer and just wave the propane gas around the joints I will do the same thing with a lot less danger.
George Coy

Se ...
  Topic: AK50 P-12 compressors
GeorgeCoy

Replies: 12
Views: 1913

PostForum: Yak-List   Posted: Thu Jun 03, 2021 9:50 am   Subject: AK50 P-12 compressors
The compressors came off the Antonoff engines. There are larger to stage compressor that seems to fit the M 14 just fine. I have two of them is sitting on my shelf for over 20 years. If somebody wants ...
  Topic: AK50 P-12 compressors
GeorgeCoy

Replies: 12
Views: 1913

PostForum: Yak-List   Posted: Thu Jun 03, 2021 6:33 am   Subject: AK50 P-12 compressors
$150.00 as is.
George

From: owner-yak-list-server@matronics.com <owner-yak-list-server@matronics.com> On Behalf Of World Aviation Museum
Sent: Thursday, June 3, 2021 10:23 AM
To: yak-list ...
  Topic: AK50 P-12 compressors
GeorgeCoy

Replies: 12
Views: 1913

PostForum: Yak-List   Posted: Thu Jun 03, 2021 6:02 am   Subject: AK50 P-12 compressors
Rico, We have a couple of used ones here.


George Coy
MotorstarNA
714 Airport Rd.
Swanton VT 05488
802-868-5633 off
802-363-5782 cell
george.coy@gmail.com (

SKYPE george.coy



...
  Topic: Spark Plug Inserts
GeorgeCoy

Replies: 7
Views: 2120

PostForum: M14PEngines-List   Posted: Tue Jun 01, 2021 5:02 am   Subject: Spark Plug Inserts
Todd,
Richard is correct, that the cylinder must be removed to be
repaired. Attached are service instructions for the replacement. We also can
supply the oversize bushings and oversize checking p ...
  Topic: intake/exhaust stack-to-cylinder rings... ?
GeorgeCoy

Replies: 7
Views: 1282

PostForum: Yak-List   Posted: Mon May 17, 2021 5:45 am   Subject: intake/exhaust stack-to-cylinder rings... ?
The M14 part numbers are:

10-04-46 Intake gasket upper pipe to cylinder 3 per cylinder
14-04-542 Exhaust Gasket (doughnut)
10-04-26 Intake gasket lower pipe to supercharger case


George ...
  Topic: Fuel connection layout
GeorgeCoy

Replies: 5
Views: 1601

PostForum: M14PEngines-List   Posted: Fri Apr 09, 2021 5:03 am   Subject: Fuel connection layout
Walter,
There never was a return line from the carburetor. The Yak 52 and other aerobatic aircraft had a return system to reduce the chance of an air bubble or vapor getting to the carburetor. They ...
  Topic: Fuel connection layout
GeorgeCoy

Replies: 5
Views: 1601

PostForum: M14PEngines-List   Posted: Thu Apr 08, 2021 4:32 am   Subject: Fuel connection layout
Richard, I beg to differ with you on this particular engine. It is an M4 62 which is basically at AI 14 engine with M 14 P cylinders. As you probably realize the AI 14 did not have a fuel return syste ...
  Topic: JTY-1 solid state voltage regulator
GeorgeCoy

Replies: 8
Views: 1392

PostForum: Yak-List   Posted: Mon Mar 29, 2021 10:07 am   Subject: JTY-1 solid state voltage regulator
Here is my diagram of the modified electrical diagram. It was for a Jasco alternator. I believe the same sensing as the B&C alternator. You can see that I used a relay to reverse the sensing of th ...
  Topic: JTY-1 solid state voltage regulator
GeorgeCoy

Replies: 8
Views: 1392

PostForum: Yak-List   Posted: Mon Mar 29, 2021 8:22 am   Subject: JTY-1 solid state voltage regulator
Here is my diagram of the modified electrical diagram. It was for a Jasco alternator. I believe the same sensing as the B&C alternator. You can see that I used a relay to reverse the sensing of th ...
  Topic: Compressor shea couplings
GeorgeCoy

Replies: 1
Views: 1358

PostForum: Yak-List   Posted: Tue Dec 01, 2020 7:04 am   Subject: Compressor shea couplings
For General info:
The shear pins of the coupling of the air compressor are manufactured in two dimensions:3 millimeters on diameter for the shear pin p/n 14-611-252;3.5 millimeters on diameter for th ...
  Topic: Yak52TW stranded, anyone have Air near Winslow, AZ?
GeorgeCoy

Replies: 8
Views: 2899

PostForum: Yak-List   Posted: Wed Nov 18, 2020 8:29 am   Subject: Yak52TW stranded, anyone have Air near Winslow, AZ?
Richard,
The Electric start / dual start was a decision that I made. As you may recall, I bought 10 new Yak-52 in late 1995. In 1998, I made a follow on order for 12 more aircraft and had Aerostar d ...
  Topic: Chip Metal Detector
GeorgeCoy

Replies: 4
Views: 2962

PostForum: M14PEngines-List   Posted: Sun Jul 26, 2020 3:06 pm   Subject: Chip Metal Detector
Chip detectors a series of metal discs space closely together. With a metal chip comes along it bridges to discs. The disks are alternating one connecting to ground the other one connecting to the lea ...
 
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