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dlm34077
Joined: 10 Feb 2007
Posts: 115
Location: AZ
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Kellym
Joined: 10 Jan 2006
Posts: 1700
Location: Sun Lakes AZ
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 Posted: Thu Aug 18, 2016 2:49 pm Post subject: MT prop governor |
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The P-860-3 IS the correct governor for narrow deck engines. P-860-5 IS
the correct governor for wide deck engines. Vans has sold for at least
the past 10 years or more the P-860-3 for all engines, wide or narrow
deck. It can be adjusted to work with the wide deck, just isn't what MT
recommends.
I am running IO-540-D4B5 certified, overhauled engine from LyCon in
Visailia with P-860-5 governor manufactured in June of 2013. Time will
tell whether it is also involved. (the B5 variant has the big Bendix
S-1200 magnetos for better high altitude performance).
Saw Myron's governor today.
On 8/18/2016 2:43 PM, David wrote:
| Quote: | My prop governor is an MT P-420-17, serial 044016; I was one of the
initial purchasers of the certificated Lycoming IO540D4A5 from Vans. I
believe the engine came from Lycoming with the governor already
installed. If I understand correctly all the failures on the RV10 were
the P-860-3 models, so it seems that the narrow deck governor has not
had a problem.
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Kelly McMullen
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tmoushon(at)gmail.com
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| Posted: Fri Aug 19, 2016 4:33 am Post subject: MT prop Governor |
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RV10
Engine YIO-540-D4A5 from Vans delivered June 2014
Prop, MT. P-860-3 (s/n 13G124G) manufactured in(2-13) from Vans
46.9 total hours with NO issues
An Inquiry to MT Germany, my Governor S/N will be impacted by SB31 when released. I have removed it and sent it to MT USA in Florida for update. I was informed that the Tech folks of MT USA (Florida) were in Germany, due back on Monday. Update parts ??? should arrive in Florida in the next few days.
IMOP while I don’t like surprises...the fact that MT responded quickly/honestly to an email inquiry indicates they are focused on the issue.
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TimRVator(at)comcast.net
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| Posted: Mon Aug 22, 2016 6:43 pm Post subject: MT prop governor |
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From the VAF thread, I see the MT Governor Installations document is at
http://www.mt-propeller.com/pdf/list_gov_e-1057.pdf
If I read this correctly...
P-860-3 is specified for an IO-360 with gear reduction .895:1 and max
RPM of 2420+/-10, head position 100 degrees (page 2)
P-880-20 is specified for an IO-540 (wide deck, I presume) with gear
reduction of .947:1, max rpm of 2557+/-10, head position 315 degrees
(page 4)
P-880-21 is specified for an IO-540 (narrow deck) with gear reduction of
.895:1, max rpm of 2420+/- 10, head position 315 degrees (page 4).
I have a P-860-3 (from Van's, as I recall) on my narrow deck
IO-540-C4B5. It appears from the MT document that the governor spins
faster on a wide deck IO-540. I don't know if there is any internal
difference between these models.
--
Tim Lewis -- HEF (Manassas, VA)
A&P
RV-6A N47TD -- 1104 hrs - sold
RV-10 N31TD -- 740 hrs
David wrote on 8/18/2016 5:43 PM:
| Quote: |
My prop governor is an MT P-420-17, serial 044016; I was one of the
initial purchasers of the certificated Lycoming IO540D4A5 from Vans. I
believe the engine came from Lycoming with the governor already
installed. If I understand correctly all the failures on the RV10 were
the P-860-3 models, so it seems that the narrow deck governor has
not had a problem.
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Tim Olson
Joined: 25 Jan 2007
Posts: 2871
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| Posted: Mon Aug 22, 2016 7:11 pm Post subject: MT prop governor |
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That sounds about right based on what I found when looking for something
for my RV-14.
The RV-14 BTW, with an IO-390, would also use an .895:1 / 2420 RPM
governor on it's
front pad, just for those who may stumble on this thread.
I have the P-860-3 on my IO-540 Narrow Deck, which is also just fine.
Sure, you
can get it with a different head position but most of that is adjustable
anyway.
Even on my RV-14, using the Hartzell S-1-79, I had to tweak the arm, and
in fact
buy a longer arm.
There are people (PCU5000X is one of them) who mistakenly think that the
IO-390 should use a .947:1 ratio governor. That's the primary reason I
didn't
go with them when building...because they were the odd man out in
misquoting me
which one to use. But then again, it was like pulling teeth to get the
information
verified at Lycoming too.
Tim
On 8/22/2016 9:40 PM, Tim Lewis wrote:
| Quote: |
From the VAF thread, I see the MT Governor Installations document is
at http://www.mt-propeller.com/pdf/list_gov_e-1057.pdf
If I read this correctly...
P-860-3 is specified for an IO-360 with gear reduction .895:1 and max
RPM of 2420+/-10, head position 100 degrees (page 2)
P-880-20 is specified for an IO-540 (wide deck, I presume) with gear
reduction of .947:1, max rpm of 2557+/-10, head position 315 degrees
(page 4)
P-880-21 is specified for an IO-540 (narrow deck) with gear reduction
of .895:1, max rpm of 2420+/- 10, head position 315 degrees (page 4).
I have a P-860-3 (from Van's, as I recall) on my narrow deck
IO-540-C4B5. It appears from the MT document that the governor spins
faster on a wide deck IO-540. I don't know if there is any internal
difference between these models.
|
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Mon Aug 22, 2016 7:19 pm Post subject: MT prop governor |
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Not sure what the intent of the table is. Shows a P-860-19 for the RV-10 with the 2557 rpm. All wide deck 540s have the same gear ratio, and all the narrow deck have the slightly lower gear ration. It has to do with what gear is inside the engine.
If you do the math, 2700 times .947 is 2557.
-sent from the I-chip implanted in my forearm
On Mon, Aug 22, 2016 at 7:40 PM, Tim Lewis <TimRVator(at)comcast.net (TimRVator(at)comcast.net)> wrote:
| Quote: | --> RV10-List message posted by: Tim Lewis <TimRVator(at)comcast.net (TimRVator(at)comcast.net)>
>From the VAF thread, I see the MT Governor Installations document is at http://www.mt-propeller.com/pdf/list_gov_e-1057.pdf
If I read this correctly...
P-860-3 is specified for an IO-360 with gear reduction .895:1 and max RPM of 2420+/-10, head position 100 degrees (page 2)
P-880-20 is specified for an IO-540 (wide deck, I presume) with gear reduction of .947:1, max rpm of 2557+/-10, head position 315 degrees (page 4)
P-880-21 is specified for an IO-540 (narrow deck) with gear reduction of .895:1, max rpm of 2420+/- 10, head position 315 degrees (page 4).
I have a P-860-3 (from Van's, as I recall) on my narrow deck IO-540-C4B5. It appears from the MT document that the governor spins faster on a wide deck IO-540. I don't know if there is any internal difference between these models.
--
Tim Lewis -- HEF (Manassas, VA)
A&P
RV-6A N47TD -- 1104 hrs - sold
RV-10 N31TD -- 740 hrs
David wrote on 8/18/2016 5:43 PM:
| Quote: |
My prop governor is an MT P-420-17, serial 044016; I was one of the initial purchasers of the certificated Lycoming IO540D4A5 from Vans. I believe the engine came from Lycoming with the governor already installed. If I understand correctly all the failures on the RV10 were the P-860-3 models, so it seems that the “narrow deck” governor has not had a problem.
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Kellym
Joined: 10 Jan 2006
Posts: 1700
Location: Sun Lakes AZ
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| Posted: Mon Aug 22, 2016 7:22 pm Post subject: MT prop governor |
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Hmmm,
The IO-390 IS a wide deck engine, just the cylinders had to use the
narrow deck attachment to allow for the extra bore over the IO-360.
I too thought it was a narrow deck at first until a Lyc rep explained it
to me. You will also see on the IO-580 that it uses the P-860-5, for a
wide deck engine. That engine is the same as the -390 with two more
cylinders.
On 8/22/2016 8:08 PM, Tim Olson wrote:
| Quote: |
That sounds about right based on what I found when looking for something
for my RV-14.
The RV-14 BTW, with an IO-390, would also use an .895:1 / 2420 RPM
governor on it's
front pad, just for those who may stumble on this thread.
I have the P-860-3 on my IO-540 Narrow Deck, which is also just fine.
Sure, you
can get it with a different head position but most of that is adjustable
anyway.
Even on my RV-14, using the Hartzell S-1-79, I had to tweak the arm, and
in fact
buy a longer arm.
There are people (PCU5000X is one of them) who mistakenly think that the
IO-390 should use a .947:1 ratio governor. That's the primary reason I
didn't
go with them when building...because they were the odd man out in
misquoting me
which one to use. But then again, it was like pulling teeth to get the
information
verified at Lycoming too.
Tim
On 8/22/2016 9:40 PM, Tim Lewis wrote:
>
>
> From the VAF thread, I see the MT Governor Installations document is
> at http://www.mt-propeller.com/pdf/list_gov_e-1057.pdf
>
> If I read this correctly...
>
> P-860-3 is specified for an IO-360 with gear reduction .895:1 and max
> RPM of 2420+/-10, head position 100 degrees (page 2)
>
> P-880-20 is specified for an IO-540 (wide deck, I presume) with gear
> reduction of .947:1, max rpm of 2557+/-10, head position 315 degrees
> (page 4)
>
> P-880-21 is specified for an IO-540 (narrow deck) with gear reduction
> of .895:1, max rpm of 2420+/- 10, head position 315 degrees (page 4).
>
> I have a P-860-3 (from Van's, as I recall) on my narrow deck
> IO-540-C4B5. It appears from the MT document that the governor spins
> faster on a wide deck IO-540. I don't know if there is any internal
> difference between these models.
|
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http://www.matronics.com/Navigator?RV10-List |
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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD |
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Tim Olson
Joined: 25 Jan 2007
Posts: 2871
|
| Posted: Mon Aug 22, 2016 8:06 pm Post subject: MT prop governor |
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I actually had to call Lycoming and have them dig in to the question to
get the answer.
I don't have the info handy, but there is something that they provided
for me on
their documentation that basically says the Wide deck engines other than the
IO-390 use the .947:1, and then the IO-390 uses the .895:1. I had to
get the normal
tech support lycoming people to escalate the question though because
they too
found the info hard to get. At any rate, what bugged me about it is, I
literally
spent tens of hours trying to get to the bottom of it. I was convinced
that everyone
else (MT/Van's/Hartzell) was wrong and PCU5000X was right, until
Lycoming finally
found that info for me. Then once they did, it went the other way.
Funny how hard it was to get accurate info...you'd think a certified
engine company
would have every last detail on their engines, at least the brand new ones.
Shocking that they didn't.
Tim
On 8/22/2016 10:21 PM, Kelly McMullen wrote:
| Quote: |
Hmmm,
The IO-390 IS a wide deck engine, just the cylinders had to use the
narrow deck attachment to allow for the extra bore over the IO-360.
I too thought it was a narrow deck at first until a Lyc rep explained
it to me. You will also see on the IO-580 that it uses the P-860-5,
for a wide deck engine. That engine is the same as the -390 with two
more cylinders.
On 8/22/2016 8:08 PM, Tim Olson wrote:
>
>
> That sounds about right based on what I found when looking for something
> for my RV-14.
> The RV-14 BTW, with an IO-390, would also use an .895:1 / 2420 RPM
> governor on it's
> front pad, just for those who may stumble on this thread.
> I have the P-860-3 on my IO-540 Narrow Deck, which is also just fine.
> Sure, you
> can get it with a different head position but most of that is adjustable
> anyway.
> Even on my RV-14, using the Hartzell S-1-79, I had to tweak the arm, and
> in fact
> buy a longer arm.
> There are people (PCU5000X is one of them) who mistakenly think that the
> IO-390 should use a .947:1 ratio governor. That's the primary reason I
> didn't
> go with them when building...because they were the odd man out in
> misquoting me
> which one to use. But then again, it was like pulling teeth to get the
> information
> verified at Lycoming too.
> Tim
> On 8/22/2016 9:40 PM, Tim Lewis wrote:
>>
>>
>> From the VAF thread, I see the MT Governor Installations document is
>> at http://www.mt-propeller.com/pdf/list_gov_e-1057.pdf
>>
>> If I read this correctly...
>>
>> P-860-3 is specified for an IO-360 with gear reduction .895:1 and max
>> RPM of 2420+/-10, head position 100 degrees (page 2)
>>
>> P-880-20 is specified for an IO-540 (wide deck, I presume) with gear
>> reduction of .947:1, max rpm of 2557+/-10, head position 315 degrees
>> (page 4)
>>
>> P-880-21 is specified for an IO-540 (narrow deck) with gear reduction
>> of .895:1, max rpm of 2420+/- 10, head position 315 degrees (page 4).
>>
>> I have a P-860-3 (from Van's, as I recall) on my narrow deck
>> IO-540-C4B5. It appears from the MT document that the governor spins
>> faster on a wide deck IO-540. I don't know if there is any internal
>> difference between these models.
>>
>>
|
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aerosport1
Joined: 07 Nov 2007
Posts: 231
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| Posted: Tue Aug 23, 2016 5:42 am Post subject: MT prop governor |
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I contacted MT about this as well and this was the response I got. They were
very quick to respond.
Just an FYI
Geoff
Hi Goeff ,
No Problem you can go on with flying , your are safe because your
manufacturing year is 2008 and not 2010 until 2013.
Thank you
Best Regards
Andreas Seperant
Engineering / Tech Support
MT-Propeller Entwicklung GmbH
Airport Straubing-Wallmuehle
D-94348 Atting - GERMANY
phone: +49( 0 )9429-9409-44
fax: +49( 0 )9429 - 8432
www.mt-propeller.com
Von: g.combs [mailto:g.combs(at)aerosportmodeling.com]
Gesendet: Montag, 22. August 2016 13:54
An: Andreas Seperant
Betreff: Re: AW: P-860-3 prop governor serial #08G595-F manufactured 16 sept
2008
Andreas I do have a lightspeed ignition system on the left side and a
standard slick mag on the right. Is this something to be concerned about
Thanks Geoff
Sent from my iPhone
Geoff Combs
Aerosport Modeling & Design
On Aug 22, 2016, at 3:30 AM, Andreas Seperant <techsupport(at)mt-propeller.com>
wrote:
Dear Geoff ,
Thank you very much for your message and information.
Your governor P-860-3 with S/N 08G595-F is not affected from this SB.
Just governor which are manufactured between April 2010 and July 2013 and
installed on direct drive engine modified with electronic ignition on higher
compression pistons are affected.
If you have any more question , please let me know.
Best Regards
Andreas Seperant
Engineering / Tech Support
MT-Propeller Entwicklung GmbH
Airport Straubing-Wallmuehle
D-94348 Atting - GERMANY
phone: +49( 0 )9429-9409-44
fax: +49( 0 )9429 - 8432
www.mt-propeller.com
Von: Geoff Combs [mailto:g.combs(at)aerosportmodeling.com]
Gesendet: Samstag, 20. August 2016 00:30
An: Andreas Seperant
Betreff: P-860-3 prop governor serial #08G595-F manufactured 16 sept 2008
Tech support
I have an RV series prop Governor on my RV-10. It has a hartzell 2 blade
prop as recommended by Vans. My engine is a narrow deck D4a5 built by
Aerosport. I have
Been flying this aircraft since 10-15-2009. I have 630 hrs. I have been
following the failures on the newer units and was wondering if my unit will
be under the new
SB 31.
P-860-3 prop governor serial #08G595-F Check off record 20800286,
manufactured 16 sept 2008
Thanks Geoff
Geoff Combs
Aerosport Modeling & Design
8090 Howe Industrial Parkway
Canal, Winchester, Ohio 43110
614-834-5227
--
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_________________
Geoff Combs
RV-10 QB N829GW
Flying 500 hrs
40033 |
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Kellym
Joined: 10 Jan 2006
Posts: 1700
Location: Sun Lakes AZ
|
| Posted: Tue Aug 23, 2016 5:55 am Post subject: MT prop governor |
|
|
Well, I am not comforted by that response, because Myron's engine AFAIK
does not have electronic ignition, just two Bendix 1200 mags, not sure
if he has stock or a bit higher compression. I am not convinced that
cylinder pressures from rate of combustion or compression ratio have
much to do with a governor. Maybe prop harmonics, but is there really
that much vibration transmitted internally in the gears of the engine?
Given that I don't believe MT has seen any of the recently failed
governors to analyze the failures, nor have they release a service
bulletin, I just don't think they really are certain about the extent of
the problem. My email to MT USA from Friday goes unanswered.
On 8/23/2016 6:12 AM, Geoff Combs wrote:
[quote]
I contacted MT about this as well and this was the response I got. They were
very quick to respond.
Just an FYI
Geoff
Hi Goeff ,
No Problem you can go on with flying , your are safe because your
manufacturing year is 2008 and not 2010 until 2013.
Thank you
Best Regards
Andreas Seperant
Engineering / Tech Support
MT-Propeller Entwicklung GmbH
Airport Straubing-Wallmuehle
D-94348 Atting - GERMANY
phone: +49( 0 )9429-9409-44
fax: +49( 0 )9429 - 8432
www.mt-propeller.com
Von: g.combs [mailto:g.combs(at)aerosportmodeling.com]
Gesendet: Montag, 22. August 2016 13:54
An: Andreas Seperant
Betreff: Re: AW: P-860-3 prop governor serial #08G595-F manufactured 16 sept
2008
Andreas I do have a lightspeed ignition system on the left side and a
standard slick mag on the right. Is this something to be concerned about
Thanks Geoff
Sent from my iPhone
Geoff Combs
Aerosport Modeling & Design
On Aug 22, 2016, at 3:30 AM, Andreas Seperant <techsupport(at)mt-propeller.com>
wrote:
Dear Geoff ,
Thank you very much for your message and information.
Your governor P-860-3 with S/N 08G595-F is not affected from this SB.
Just governor which are manufactured between April 2010 and July 2013 and
installed on direct drive engine modified with electronic ignition on higher
compression pistons are affected.
If you have any more question , please let me know.
Best Regards
Andreas Seperant
Engineering / Tech Support
MT-Propeller Entwicklung GmbH
Airport Straubing-Wallmuehle
D-94348 Atting - GERMANY
phone: +49( 0 )9429-9409-44
fax: +49( 0 )9429 - 8432
www.mt-propeller.com
Von: Geoff Combs [mailto:g.combs(at)aerosportmodeling.com]
Gesendet: Samstag, 20. August 2016 00:30
An: Andreas Seperant
Betreff: P-860-3 prop governor serial #08G595-F manufactured 16 sept 2008
Tech support
I have an RV series prop Governor on my RV-10. It has a hartzell 2 blade
prop as recommended by Vans. My engine is a narrow deck D4a5 built by
Aerosport. I have
Been flying this aircraft since 10-15-2009. I have 630 hrs. I have been
following the failures on the newer units and was wondering if my unit will
be under the new
SB 31.
P-860-3 prop governor serial #08G595-F Check off record 20800286,
manufactured 16 sept 2008
Thanks Geoff
Geoff Combs
Aerosport Modeling & Design
8090 Howe Industrial Parkway
Canal, Winchester, Ohio 43110
614-834-5227
--
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
|
_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD |
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john(at)trollingers.com
Guest
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| Posted: Tue Aug 23, 2016 6:28 am Post subject: MT prop governor |
|
|
The responded to me really quickly (emailed Sunday night got the response Monday morning). I agree though, not sure why the believe the issue is a mag / compression issue.
On Tue, Aug 23, 2016 at 9:53 AM, Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)> wrote:
[quote]--> RV10-List message posted by: Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)>
Well, I am not comforted by that response, because Myron's engine AFAIK does not have electronic ignition, just two Bendix 1200 mags, not sure if he has stock or a bit higher compression. I am not convinced that cylinder pressures from rate of combustion or compression ratio have much to do with a governor. Maybe prop harmonics, but is there really that much vibration transmitted internally in the gears of the engine?
Given that I don't believe MT has seen any of the recently failed governors to analyze the failures, nor have they release a service bulletin, I just don't think they really are certain about the extent of the problem. My email to MT USA from Friday goes unanswered.
On 8/23/2016 6:12 AM, Geoff Combs wrote:
[quote] --> RV10-List message posted by: "Geoff Combs" <g.combs(at)aerosportmodeling.com (g.combs(at)aerosportmodeling.com)>
I contacted MT about this as well and this was the response I got. They were
very quick to respond.
Just an FYI
Geoff
Hi Goeff ,
No Problem you can go on with flying , your are safe because your
manufacturing year is 2008 and not 2010 until 2013.
Thank you
Best Regards
Andreas Seperant
Engineering / Tech Support
MT-Propeller Entwicklung GmbH
Airport Straubing-Wallmuehle
D-94348 Atting - GERMANY
phone: [url=tel:%2B49%28%200%20%299429-9409-44]+49( 0 )9429-9409-44[/url]
fax: [url=tel:%2B49%28%200%20%299429%20-%208432]+49( 0 )9429 - 8432[/url]
www.mt-propeller.com
Von: g.combs [mailto:g.combs(at)aerosportmodeling.com (g.combs(at)aerosportmodeling.com)]
Gesendet: Montag, 22. August 2016 13:54
An: Andreas Seperant
Betreff: Re: AW: P-860-3 prop governor serial #08G595-F manufactured 16 sept
2008
Andreas I do have a lightspeed ignition system on the left side and a
standard slick mag on the right. Is this something to be concerned about
Thanks Geoff
Sent from my iPhone
Geoff Combs
Aerosport Modeling & Design
On Aug 22, 2016, at 3:30 AM, Andreas Seperant <techsupport(at)mt-propeller.com (techsupport(at)mt-propeller.com)>
wrote:
Dear Geoff ,
Thank you very much for your message and information.
Your governor P-860-3 with S/N 08G595-F is not affected from this SB.
Just governor which are manufactured between April 2010 and July 2013 and
installed on direct drive engine modified with electronic ignition on higher
compression pistons are affected.
If you have any more question , please let me know.
Best Regards
Andreas Seperant
Engineering / Tech Support
MT-Propeller Entwicklung GmbH
Airport Straubing-Wallmuehle
D-94348 Atting - GERMANY
phone: [url=tel:%2B49%28%200%20%299429-9409-44]+49( 0 )9429-9409-44[/url]
fax: [url=tel:%2B49%28%200%20%299429%20-%208432]+49( 0 )9429 - 8432[/url]
www.mt-propeller.com
Von: Geoff Combs [mailto:g.combs(at)aerosportmodeling.com (g.combs(at)aerosportmodeling.com)]
Gesendet: Samstag, 20. August 2016 00:30
An: Andreas Seperant
Betreff: P-860-3 prop governor serial #08G595-F manufactured 16 sept 2008
Tech support
I have an RV series prop Governor on my RV-10. It has a hartzell 2 blade
prop as recommended by Vans. My engine is a narrow deck D4a5 built by
Aerosport. I have
Been flying this aircraft since 10-15-2009. I have 630 hrs. I have been
following the failures on the newer units and was wondering if my unit will
be under the new
SB 31.
P-860-3 prop governor serial #08G595-F Check off record 20800286,
manufactured 16 sept 2008
Thanks Geoff
Geoff Combs
Aerosport Modeling & Design
8090 Howe Industrial Parkway
Canal, Winchester, Ohio 43110
[url=tel:614-834-5227]614-834-5227[/url]
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civengpe
Joined: 14 Feb 2011
Posts: 105
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| Posted: Tue Aug 23, 2016 6:43 am Post subject: MT prop governor |
|
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I just spoke with MT USA and my governor is being worked on right now and is scheduled to be shipped back to me tomorrow. I confirmed with them that both SB27 and SB31 will be completed and documented even though SB31 has yet to be published.
I am in a conundrum though, I have a Hartzell governor being delivered today. I'm not sure if I will install it or the rebuilt MT.
Shannon
On Tue, Aug 23, 2016 at 9:26 AM, John Trollinger <john(at)trollingers.com (john(at)trollingers.com)> wrote:
[quote]The responded to me really quickly (emailed Sunday night got the response Monday morning). I agree though, not sure why the believe the issue is a mag / compression issue.
On Tue, Aug 23, 2016 at 9:53 AM, Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)> wrote:
[quote]--> RV10-List message posted by: Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)>
Well, I am not comforted by that response, because Myron's engine AFAIK does not have electronic ignition, just two Bendix 1200 mags, not sure if he has stock or a bit higher compression. I am not convinced that cylinder pressures from rate of combustion or compression ratio have much to do with a governor. Maybe prop harmonics, but is there really that much vibration transmitted internally in the gears of the engine?
Given that I don't believe MT has seen any of the recently failed governors to analyze the failures, nor have they release a service bulletin, I just don't think they really are certain about the extent of the problem. My email to MT USA from Friday goes unanswered.
On 8/23/2016 6:12 AM, Geoff Combs wrote:
[quote] --> RV10-List message posted by: "Geoff Combs" <g.combs(at)aerosportmodeling.com (g.combs(at)aerosportmodeling.com)>
I contacted MT about this as well and this was the response I got. They were
very quick to respond.
Just an FYI
Geoff
Hi Goeff ,
No Problem you can go on with flying , your are safe because your
manufacturing year is 2008 and not 2010 until 2013.
Thank you
Best Regards
Andreas Seperant
Engineering / Tech Support
MT-Propeller Entwicklung GmbH
Airport Straubing-Wallmuehle
D-94348 Atting - GERMANY
phone: [url=tel:%2B49%28%200%20%299429-9409-44]+49( 0 )9429-9409-44[/url]
fax: [url=tel:%2B49%28%200%20%299429%20-%208432]+49( 0 )9429 - 8432[/url]
www.mt-propeller.com
Von: g.combs [mailto:g.combs(at)aerosportmodeling.com (g.combs(at)aerosportmodeling.com)]
Gesendet: Montag, 22. August 2016 13:54
An: Andreas Seperant
Betreff: Re: AW: P-860-3 prop governor serial #08G595-F manufactured 16 sept
2008
Andreas I do have a lightspeed ignition system on the left side and a
standard slick mag on the right. Is this something to be concerned about
Thanks Geoff
Sent from my iPhone
Geoff Combs
Aerosport Modeling & Design
On Aug 22, 2016, at 3:30 AM, Andreas Seperant <techsupport(at)mt-propeller.com (techsupport(at)mt-propeller.com)>
wrote:
Dear Geoff ,
Thank you very much for your message and information.
Your governor P-860-3 with S/N 08G595-F is not affected from this SB.
Just governor which are manufactured between April 2010 and July 2013 and
installed on direct drive engine modified with electronic ignition on higher
compression pistons are affected.
If you have any more question , please let me know.
Best Regards
Andreas Seperant
Engineering / Tech Support
MT-Propeller Entwicklung GmbH
Airport Straubing-Wallmuehle
D-94348 Atting - GERMANY
phone: [url=tel:%2B49%28%200%20%299429-9409-44]+49( 0 )9429-9409-44[/url]
fax: [url=tel:%2B49%28%200%20%299429%20-%208432]+49( 0 )9429 - 8432[/url]
www.mt-propeller.com
Von: Geoff Combs [mailto:g.combs(at)aerosportmodeling.com (g.combs(at)aerosportmodeling.com)]
Gesendet: Samstag, 20. August 2016 00:30
An: Andreas Seperant
Betreff: P-860-3 prop governor serial #08G595-F manufactured 16 sept 2008
Tech support
I have an RV series prop Governor on my RV-10. It has a hartzell 2 blade
prop as recommended by Vans. My engine is a narrow deck D4a5 built by
Aerosport. I have
Been flying this aircraft since 10-15-2009. I have 630 hrs. I have been
following the failures on the newer units and was wondering if my unit will
be under the new
SB 31.
P-860-3 prop governor serial #08G595-F Check off record 20800286,
manufactured 16 sept 2008
Thanks Geoff
Geoff Combs
Aerosport Modeling & Design
8090 Howe Industrial Parkway
Canal, Winchester, Ohio 43110
[url=tel:614-834-5227]614-834-5227[/url]
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Kellym
Joined: 10 Jan 2006
Posts: 1700
Location: Sun Lakes AZ
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| Posted: Tue Aug 23, 2016 11:54 am Post subject: MT prop governor |
|
|
I just got a reply from MT that my -5 governor is listed on preliminary
copy of Service Bulletin. First I have heard that more than just -3
governors are involved.
On 8/23/2016 7:26 AM, John Trollinger wrote:
| Quote: | The responded to me really quickly (emailed Sunday night got the
response Monday morning). I agree though, not sure why the believe the
issue is a mag / compression issue.
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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD |
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pilotdds(at)aol.com
Guest
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| Posted: Tue Aug 23, 2016 3:48 pm Post subject: MT prop governor |
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Anyone know what the cost is to comply with the service bulletins?
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john(at)trollingers.com
Guest
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| Posted: Wed Aug 24, 2016 3:11 am Post subject: MT prop governor |
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Here is the email I got this morning:
Dear John,
Your governor P-860-3 S/N 11G153G is affected from the planned SB 31 .
Such governors with more than 100 hours of operation must be modified within the next 25 hours or by January 2017.
So please contact your next MT propeller Service Centre and send the governor in for modification , visit for this our homepage with the following link:
http://www.mt-propeller.com/en/entw/services.htm
If you have any more question , please let me know
Thank you
Best Regards
Andreas Seperant
John
On Tue, Aug 23, 2016 at 3:54 PM, Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)> wrote:
| Quote: | --> RV10-List message posted by: Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)>
I just got a reply from MT that my -5 governor is listed on preliminary copy of Service Bulletin. First I have heard that more than just -3 governors are involved.
On 8/23/2016 7:26 AM, John Trollinger wrote:
| Quote: | The responded to me really quickly (emailed Sunday night got the
response Monday morning). I agree though, not sure why the believe the
issue is a mag / compression issue.
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