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RPM issue

 
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glipaz



Joined: 11 Jan 2011
Posts: 101

PostPosted: Thu Dec 23, 2021 10:23 am    Post subject: RPM issue Reply with quote

Looking for prop governor setup advice.

M-14P. Had a v530 prop. in ground runup, the prop cycled fine per the book to 50%. In flight I could not get RPMs below around 2000rpm (70%).

Have now installed MT 3-blade prop and MT upgraded the governor to produce higher pressure per their recommendation. Having same issue with the new prop. Ground run cycles down, but in flight it won't go below 70%. Also, in a steep descent, the RPM's will increase slightly.

Anybody had this experience?
Cheers and happy holidays,
Gil


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richard.goode(at)russiana
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PostPosted: Thu Dec 23, 2021 10:43 am    Post subject: RPM issue Reply with quote

The governors are difficult to set up, and you do need to make sure that you get an absolutely full travel at the governor relating to the full travel in the cockpit.
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode(at)russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.

--


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dsavarese0812(at)bellsout
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PostPosted: Thu Dec 23, 2021 11:26 am    Post subject: RPM issue Reply with quote

What happens when you pull the throttle back AFTER you’ve pulled the prop back to where the rpm is 2000 or 70%? Does the RPM decrease or stay at 2000?
Dennis

Sent from my iPhone

[quote] On Dec 23, 2021, at 1:45 PM, Richard Goode <richard.goode(at)russianaeros.com> wrote:



The governors are difficult to set up, and you do need to make sure that you get an absolutely full travel at the governor relating to the full travel in the cockpit.


RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode(at)russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.

--


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kiwi679



Joined: 08 Jul 2011
Posts: 17
Location: Netherlands

PostPosted: Thu Dec 23, 2021 12:14 pm    Post subject: RPM issue Reply with quote

I thought a pressure upgrade of the governor was no longer required for the MT prop as they’d changed their hub.
Any insights on this?

Steve

[quote] On 23 Dec 2021, at 19:42, Richard Goode <richard.goode(at)russianaeros.com> wrote:



The governors are difficult to set up, and you do need to make sure that you get an absolutely full travel at the governor relating to the full travel in the cockpit.


RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode(at)russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.

--


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regards Stephen
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richard.goode(at)russiana
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PostPosted: Fri Dec 24, 2021 12:03 am    Post subject: RPM issue Reply with quote

That is true, but only for MT props made – I guess – in the last six years or so. But in any case, particularly in aerobatics where it is useful to have rapid pitch changes, higher oil pressure from the governor definitely helps.

RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode(at)russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.

--


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kiwi679



Joined: 08 Jul 2011
Posts: 17
Location: Netherlands

PostPosted: Fri Dec 24, 2021 8:55 am    Post subject: RPM issue Reply with quote

Thanks Richard.

[quote] On 24 Dec 2021, at 09:03, Richard Goode <richard.goode(at)russianaeros.com> wrote:



That is true, but only for MT props made – I guess – in the last six years or so. But in any case, particularly in aerobatics where it is useful to have rapid pitch changes, higher oil pressure from the governor definitely helps.

RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode(at)russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.

--


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kiwi679



Joined: 08 Jul 2011
Posts: 17
Location: Netherlands

PostPosted: Fri Dec 24, 2021 8:59 am    Post subject: RPM issue Reply with quote

where are you going with this Dennis?
I have a new MT on order and have upgraded to stronger springs in my governor.
What else should I be looking for when I get the propeller reinstalled?

rgds Stephen

[quote] On 23 Dec 2021, at 20:26, Anthony Savarese <dsavarese0812(at)bellsouth.net> wrote:



What happens when you pull the throttle back AFTER you’ve pulled the prop back to where the rpm is 2000 or 70%? Does the RPM decrease or stay at 2000?
Dennis

Sent from my iPhone

> On Dec 23, 2021, at 1:45 PM, Richard Goode <richard.goode(at)russianaeros.com> wrote:
>
> 
>
> The governors are difficult to set up, and you do need to make sure that you get an absolutely full travel at the governor relating to the full travel in the cockpit.
>
>
> RICHARD GOODE AEROBATICS
> Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
> Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
> e-mail: richard.goode(at)russianaeros.com
> www.russianaeros.com
> WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
> In partnership with Aerometal Kft, Hungary.
>
> --


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glipaz



Joined: 11 Jan 2011
Posts: 101

PostPosted: Sat Dec 25, 2021 12:29 pm    Post subject: Re: RPM issue Reply with quote

Dennis, I’ll try it and report back.

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glipaz



Joined: 11 Jan 2011
Posts: 101

PostPosted: Sat Jan 22, 2022 5:50 pm    Post subject: Re: RPM issue Reply with quote

Dennis, sorry for the delay. When I set it in flight to 70% and then pull throttle back the RPMs stay steady.

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