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Mike Whisky
Joined: 05 Jun 2006
Posts: 336
Location: Switzerland
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 Posted: Mon May 27, 2013 2:51 pm Post subject: how can I find out the gear reduction for the governor drive |
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I own an TMXIO-540 and wonder what the governor reduction drive is, I don`t have my engine documentation currently with me. Does anyone know who has an TMX-io540 Red/Gold? I just want to be sure that the P-860-3 MT governor is really the correct one.
Thanks
Mike
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Tue May 28, 2013 6:19 am Post subject: how can I find out the gear reduction for the governor drive |
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Assuming that they are built from new parts kits or WD cores. It didn't occur to me that anyone would still have an engine built from new parts kit, since Lyc priced those out of the market about 18 months ago. As has been noted before, if one has a wide deck engine, then the MT P-860-5 governor is the correct unit of that brand. It is unfortunate that Van's still only supplies the narrow deck P-860-3 governor, when they have never sold a new narrow deck engine. (Lyc stopped making narrow deck more than 10 yrs before Van founded his company).
On Tue, May 28, 2013 at 6:06 AM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
| Quote: | --> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>
All TMX engines should be wide deck.
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
C: [url=tel:352-427-0285]352-427-0285[/url]
F: [url=tel:815-377-3694]815-377-3694[/url]
On May 27, 2013, at 7:59 PM, Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)> wrote:
> --> RV10-List message posted by: Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)>
>
> The only thing that determines what gear reduction you need is whether you have a narrow deck version or a wide deck. Which one you have depends on the core used to build the engine, not who assembled it.
> You can easily tell by the cylinder hold down bolts. Narrow deck have hollow allen key bolts. Wide deck has conventional hex nuts on studs.
> The governor Van's sells has reduction for narrow deck. (despite the fact that all new engines Vans sells are wide deck). While adjustments can be made to make the Vans governor work on a wide deck, it still won't be correct. Jim Ayers has often posted here the correct information. A wide deck engine is supposed to get a P-860-5 MT governor.
> More detail on the differences at http://www.generalaviationnews.com/2009/10/ask-paul-wide-deck-vs-narrow-deck-engines/
> On 5/27/2013 3:51 PM, Mike Whisky wrote:
>> --> RV10-List message posted by: "Mike Whisky" <rv-10(at)wellenzohn.net (rv-10(at)wellenzohn.net)>
>>
>> I own an TMXIO-540 and wonder what the governor reduction drive is, I don`t have my engine documentation currently with me. Does anyone know who has an TMX-io540 Red/Gold? I just want to be sure that the P-860-3 MT governor is really the correct one.
>> Thanks
>> Mike
>>
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Kelly McMullen
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Strasnuts
Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT
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| Posted: Tue May 28, 2013 6:44 am Post subject: how can I find out the gear reduction for the governor drive |
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Not sure if it has been brought up already but I have an MT -3 governor on a wide deck IO-540-N1A5 and it works fine with full RPM range.
[quote] ---
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RV-10 SB N801VR Flying
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rv10flyer
Joined: 25 Aug 2009
Posts: 364
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| Posted: Tue May 28, 2013 7:03 am Post subject: Re: how can I find out the gear reduction for the governor d |
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My -3 also has worked fine after some minor speed adjustments. I spoke to MT and it is acceptable. My -3 was set for 2411 rpm which is close to gov gear rpm on narrow deck engine. .895:1 ratio. .895 X 2700= 2416.5. My IO-540-D4A5 wide deck ratio is .947:1. So I used approximately 6 turns ccw on high rpm adj. You may have to loosen contol arm on splined shaft and rotate one or two splines too.
The -3 or -5 defines the settings– relief valve pressure, max. RPM, control arm travel and position etc.
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Wayne G. |
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rv10pro(at)gmail.com
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| Posted: Tue May 28, 2013 7:48 am Post subject: how can I find out the gear reduction for the governor drive |
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Kelly, if I read your post correctly, all of the new Lycoming engines sold by VANS of the IO-540 variant are now only Wide Deck and not Narrow Deck. Aren't each of the wide deck jugs heavier and too wide to fit the stock RV-10 fiberglass cowl design? Or is that just for the Angle Valve Heads versus Parallel Valve?
John C.
On Tue, May 28, 2013 at 7:19 AM, Kelly McMullen <apilot2(at)gmail.com (apilot2(at)gmail.com)> wrote:
[quote]Assuming that they are built from new parts kits or WD cores. It didn't occur to me that anyone would still have an engine built from new parts kit, since Lyc priced those out of the market about 18 months ago. As has been noted before, if one has a wide deck engine, then the MT P-860-5 governor is the correct unit of that brand. It is unfortunate that Van's still only supplies the narrow deck P-860-3 governor, when they have never sold a new narrow deck engine. (Lyc stopped making narrow deck more than 10 yrs before Van founded his company).
On Tue, May 28, 2013 at 6:06 AM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
| Quote: | --> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>
All TMX engines should be wide deck.
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
C: [url=tel:352-427-0285]352-427-0285[/url]
F: [url=tel:815-377-3694]815-377-3694[/url]
On May 27, 2013, at 7:59 PM, Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)> wrote:
> --> RV10-List message posted by: Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)>
>
> The only thing that determines what gear reduction you need is whether you have a narrow deck version or a wide deck. Which one you have depends on the core used to build the engine, not who assembled it.
> You can easily tell by the cylinder hold down bolts. Narrow deck have hollow allen key bolts. Wide deck has conventional hex nuts on studs.
> The governor Van's sells has reduction for narrow deck. (despite the fact that all new engines Vans sells are wide deck). While adjustments can be made to make the Vans governor work on a wide deck, it still won't be correct. Jim Ayers has often posted here the correct information. A wide deck engine is supposed to get a P-860-5 MT governor.
> More detail on the differences at http://www.generalaviationnews.com/2009/10/ask-paul-wide-deck-vs-narrow-deck-engines/
> On 5/27/2013 3:51 PM, Mike Whisky wrote:
>> --> RV10-List message posted by: "Mike Whisky" <rv-10(at)wellenzohn.net (rv-10(at)wellenzohn.net)>
>>
>> I own an TMXIO-540 and wonder what the governor reduction drive is, I don`t have my engine documentation currently with me. Does anyone know who has an TMX-io540 Red/Gold? I just want to be sure that the P-860-3 MT governor is really the correct one.
>> Thanks
>> Mike
>>
>> --------
>> RV-10 builder (final assembly)
>> #511
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=401444#401444
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
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> Checked by AVG - www.avg.com
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BPA(at)bpaengines.com
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| Posted: Tue May 28, 2013 8:03 am Post subject: how can I find out the gear reduction for the governor drive |
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John,
That’s just for the angle head cylinders. Both narrow deck and wide deck engines fit the RV-10 cowl.
Allen
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