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crobin(at)skyvantage.com
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GeorgeCoy
Joined: 02 Dec 2010
Posts: 310
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 Posted: Tue Nov 04, 2014 8:56 am Post subject: Metal Prop |
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Yes, there is a 3 blade Hartzell. They are often installed on Murphy Moose. Â I did the flight testing at Hartzell many years ago. I am still a dealer for this prop.
George Coy
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Cory Robin
Sent: Tuesday, November 04, 2014 11:46 AM
To: yak-list(at)matronics.com
Subject: Metal Prop
Anyone aware of any metal propeller options for the M14P?
Cory Robin
Chief Executive Officer
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UT 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook! www.facebook.com/skyvantage
01234567890123456789
[quote][b]
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richard.goode(at)russiana
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| Posted: Tue Nov 04, 2014 9:17 am Post subject: Metal Prop |
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I believe there is also a three blade metal prop from Avia in the Czech Republic. However it is quite heavy and non--aerobatic.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel:Â +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of George S. Coy
Sent: 04 November 2014 16:56
To: yak-list(at)matronics.com
Subject: RE: Metal Prop
Yes, there is a 3 blade Hartzell. They are often installed on Murphy Moose. I did the flight testing at Hartzell many years ago. I am still a dealer for this prop.
George Coy
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Cory Robin
Sent: Tuesday, November 04, 2014 11:46 AM
To: yak-list(at)matronics.com
Subject: Metal Prop
Anyone aware of any metal propeller options for the M14P?
Cory Robin
Chief Executive Officer
[img]cid:~WRD000.jpg[/img]
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UT 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook! www.facebook.com/skyvantage
| Quote: | | www.aeroelectric.comwww.buildersbooks.comwww.homebuilthelp.comwww.mypilotstore.comwww.mrrace.comhttp://www.matronics.com/contribution |
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Viperdoc
Joined: 19 Apr 2014
Posts: 484
Location: 08A
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| Posted: Tue Nov 04, 2014 12:47 pm Post subject: Metal Prop |
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Why? That composite wood prop is protective in its self. That small supercharger shaft is going take a beating with a prop strike with a metal prop. Not to say it won't with the wood but not as much damage will be transmitted to the other pinion gears as will be with a metal prop.
Doc
Sent from my iPad
On Nov 4, 2014, at 11:15 AM, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
[quote]v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} <![endif]--> <![endif]--> <![endif]-->
I believe there is also a three blade metal prop from Avia in the Czech Republic. However it is quite heavy and non--aerobatic.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)] On Behalf Of George S. Coy
Sent: 04 November 2014 16:56
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: RE: Metal Prop
Yes, there is a 3 blade Hartzell. They are often installed on Murphy Moose. I did the flight testing at Hartzell many years ago. I am still a dealer for this prop.
George Coy
From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)] On Behalf Of Cory Robin
Sent: Tuesday, November 04, 2014 11:46 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Yak-List: Metal Prop
Anyone aware of any metal propeller options for the M14P?
Cory Robin
Chief Executive Officer
<~WRD000.jpg>
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UT 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook! www.facebook.com/skyvantage
012345
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crobin(at)skyvantage.com
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| Posted: Tue Nov 04, 2014 2:25 pm Post subject: Metal Prop |
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My M-14P is on a Wilga. I fly from backcountry/unimproved strips all the time.. Taking rocks through my all composite Whirlwind propeller is really proving to be bad news.  So I'm open to options appropriate for my application.
Cory Robin
Chief Executive Officer
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UTÂ 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook!  www.facebook.com/skyvantage
On Tue, Nov 4, 2014 at 1:46 PM, Roger Kemp <f16viperdoc(at)me.com (f16viperdoc(at)me.com)> wrote:
[quote]Why? That composite wood prop is protective in its self. That small supercharger shaft is going take a beating with a prop strike with a metal prop. Not to say it won't with the wood but not as much damage will be transmitted to the other pinion gears as will be with a metal prop.
Doc
Sent from my iPad
On Nov 4, 2014, at 11:15 AM, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
5
[b]
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Sonic1
Joined: 10 Feb 2009
Posts: 21
Location: Vancouver, BC
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| Posted: Tue Nov 04, 2014 2:47 pm Post subject: Re: Metal Prop |
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Will an Avia V520 fit?
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rmhou(at)yahoo.com
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| Posted: Tue Nov 04, 2014 3:06 pm Post subject: Metal Prop |
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Call M14P. They installed Chinese blades in Russian hub. But it was for ground tested only, I think. It never flew; not sure why.
On Tuesday, November 4, 2014 2:39 PM, Cory Robin <crobin(at)skyvantage.com> wrote:
My M-14P is on a Wilga. I fly from backcountry/unimproved strips all the time.. Taking rocks through my all composite Whirlwind propeller is really proving to be bad news. So I'm open to options appropriate for my application.
Cory Robin
Chief Executive Officer
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UT 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook! www.facebook.com/skyvantage
On Tue, Nov 4, 2014 at 1:46 PM, Roger Kemp <f16viperdoc(at)me.com (f16viperdoc(at)me.com)> wrote:
| Quote: | Why? That composite wood prop is protective in its self. That small supercharger shaft is going take a beating with a prop strike with a metal prop. Not to say it won't with the wood but not as much damage will be transmitted to the other pinion gears as will be with a metal prop.
Doc
Sent from my iPad
On Nov 4, 2014, at 11:15 AM, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
5
www.aeroelectric.com |
6
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Viperdoc
Joined: 19 Apr 2014
Posts: 484
Location: 08A
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| Posted: Tue Nov 04, 2014 5:20 pm Post subject: Metal Prop |
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Copy Cory. I can understand your agist.
Doc
Sent from my iPad
On Nov 4, 2014, at 5:04 PM, Robin Hou <rmhou(at)yahoo.com (rmhou(at)yahoo.com)> wrote:
[quote]Call M14P. They installed Chinese blades in Russian hub. But it was for ground tested only, I think. It never flew; not sure why.
On Tuesday, November 4, 2014 2:39 PM, Cory Robin <crobin(at)skyvantage.com (crobin(at)skyvantage.com)> wrote:
My M-14P is on a Wilga. I fly from backcountry/unimproved strips all the time.. Taking rocks through my all composite Whirlwind propeller is really proving to be bad news. So I'm open to options appropriate for my application.
Cory Robin
Chief Executive Officer
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UT 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook! www.facebook.com/skyvantage
On Tue, Nov 4, 2014 at 1:46 PM, Roger Kemp <f16viperdoc(at)me.com (f16viperdoc(at)me.com)> wrote:
| Quote: | Why? That composite wood prop is protective in its self. That small supercharger shaft is going take a beating with a prop strike with a metal prop. Not to say it won't with the wood but not as much damage will be transmitted to the other pinion gears as will be with a metal prop.
Doc
Sent from my iPad
On Nov 4, 2014, at 11:15 AM, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
5
www.aeroelectric.com |
6
<68992_10152752200891192_3706082317252171052_n.jpg>
[b]
| | - The Matronics Yak-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:
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Viperdoc |
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LinJun
Joined: 18 Aug 2013
Posts: 7
Location: China
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| Posted: Wed Nov 05, 2014 4:28 am Post subject: Re: Metal Prop |
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There is a Chinese propeller named JL-2B can fit M-14P.
| | - The Matronics Yak-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:
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dsavarese0812(at)bellsout
Guest
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| Posted: Wed Nov 05, 2014 4:55 am Post subject: Metal Prop |
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Although the Russian and Chinese prop hubs appear very similar, the threads on the blade shanks of the Chinese blades are very coarse compared to the threads on the Russian blades. Thus it would require replacement of the castellated nut assemblies. If I remember correctly, the large, flat bearings are the same size. So maybe the assemblies are the same size too. I wonder if it is possible to remove the castellated nut assembly on the sides of the Chinese hub and install them in a blank Russian hub? If that were possible, I guess one could use a set of Chinese metal blades. But I don't know if the castellated nut assemblies will interchange or not.
Dennis
From: Roger Kemp <f16viperdoc(at)me.com>
To: "yak-list(at)matronics.com" <yak-list(at)matronics.com>
Sent: Tuesday, November 4, 2014 7:19 PM
Subject: Re: Metal Prop
Copy Cory. I can understand your agist.
Doc
Sent from my iPad
On Nov 4, 2014, at 5:04 PM, Robin Hou <rmhou(at)yahoo.com (rmhou(at)yahoo.com)> wrote:
| Quote: | Call M14P. They installed Chinese blades in Russian hub. But it was for ground tested only, I think. It never flew; not sure why.
On Tuesday, November 4, 2014 2:39 PM, Cory Robin <crobin(at)skyvantage.com (crobin(at)skyvantage.com)> wrote:
My M-14P is on a Wilga. I fly from backcountry/unimproved strips all the time.. Taking rocks through my all composite Whirlwind propeller is really proving to be bad news. So I'm open to options appropriate for my application.
Cory Robin
Chief Executive Officer
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UT 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook! www.facebook.com/skyvantage
On Tue, Nov 4, 2014 at 1:46 PM, Roger Kemp <f16viperdoc(at)me.com (f16viperdoc(at)me.com)> wrote:
| Quote: | Why? That composite wood prop is protective in its self. That small supercharger shaft is going take a beating with a prop strike with a metal prop. Not to say it won't with the wood but not as much damage will be transmitted to the other pinion gears as will be with a metal prop.
Doc
Sent from my iPad
On Nov 4, 2014, at 11:15 AM, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
5
www.aeroelectric.com |
6
<68992_10152752200891192_3706082317252171052_n.jpg>
www.aeroelectric.com |
7
[quote][b]
| | - The Matronics Yak-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:
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hess737(at)aol.com
Guest
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| Posted: Wed Nov 05, 2014 5:04 am Post subject: Metal Prop |
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I had a set of JL-2 blades on my 400 hp Husai engine. They were making a similar set up for the M-14P. Ffrom my experience the Chinese metal three-blade set up was VERY smooth and powerful. Only penalty was the extra weight.
Richard Hess
President
International Jets, Inc.
Cell 404-964-4885
--
| | - The Matronics Yak-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:
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dsavarese0812(at)bellsout
Guest
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| Posted: Wed Nov 05, 2014 5:17 am Post subject: Metal Prop |
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Also, I don't know the max design RPM limits on the Chinese blades which turn 2400/2450 when installed on the HS6A engine. Turning them up to the M14 capable RPM of 2900 could possibly stress the blades more than they were designed to be run at. If Jill at M14P did some testing on this, she may know the answer.
Dennis
| Quote: | A. Dennis Savarese
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1 |
On 11/5/2014 6:51 AM, A. Dennis Savarese wrote:
[quote] Although the Russian and Chinese prop hubs appear very similar, the threads on the blade shanks of the Chinese blades are very coarse compared to the threads on the Russian blades. Thus it would require replacement of the castellated nut assemblies. If I remember correctly, the large, flat bearings are the same size. So maybe the assemblies are the same size too. I wonder if it is possible to remove the castellated nut assembly on the sides of the Chinese hub and install them in a blank Russian hub? If that were possible, I guess one could use a set of Chinese metal blades. But I don't know if the castellated nut assemblies will interchange or not.
Dennis
From: Roger Kemp <f16viperdoc(at)me.com> (f16viperdoc(at)me.com)
To: "yak-list(at)matronics.com" (yak-list(at)matronics.com) <yak-list(at)matronics.com> (yak-list(at)matronics.com)
Sent: Tuesday, November 4, 2014 7:19 PM
Subject: Re: Metal Prop
Copy Cory. I can understand your agist.
Doc
Sent from my iPad
On Nov 4, 2014, at 5:04 PM, Robin Hou <rmhou(at)yahoo.com (rmhou(at)yahoo.com)> wrote:
| Quote: | Call M14P. They installed Chinese blades in Russian hub. But it was for ground tested only, I think. It never flew; not sure why.
On Tuesday, November 4, 2014 2:39 PM, Cory Robin <crobin(at)skyvantage.com (crobin(at)skyvantage.com)> wrote:
My M-14P is on a Wilga. I fly from backcountry/unimproved strips all the time.. Taking rocks through my all composite Whirlwind propeller is really proving to be bad news. So I'm open to options appropriate for my application.
Cory Robin
Chief Executive Officer
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UT 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook! www.facebook.com/skyvantage
On Tue, Nov 4, 2014 at 1:46 PM, Roger Kemp <f16viperdoc(at)me.com (f16viperdoc(at)me.com)> wrote:
| Quote: | Why? That composite wood prop is protective in its self. That small supercharger shaft is going take a beating with a prop strike with a metal prop. Not to say it won't with the wood but not as much damage will be transmitted to the other pinion gears as will be with a metal prop.
Doc
Sent from my iPad
On Nov 4, 2014, at 11:15 AM, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
6
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<68992_10152752200891192_3706082317252171052_n.jpg>
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9 [b]
| | - The Matronics Yak-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:
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richard.goode(at)russiana
Guest
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| Posted: Wed Nov 05, 2014 5:37 am Post subject: Metal Prop |
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The M 14 P is, of course, a geared engine, so the propeller turns at 0.658 times the speed of the engine. So at 101%, which equates to 2950 rpm, the propeller is turning at 1941 rpm!
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of A. Dennis Savarese
Sent: 05 November 2014 13:17
To: yak-list(at)matronics.com
Subject: Re: Metal Prop
Also, I don't know the max design RPM limits on the Chinese blades which turn 2400/2450 when installed on the HS6A engine. Turning them up to the M14 capable RPM of 2900 could possibly stress the blades more than they were designed to be run at. If Jill at M14P did some testing on this, she may know the answer.
Dennis
| Quote: | | A. Dennis Savarese334-546-8182 (mobile)www.yak-52.comSkype - Yakguy1 |
On 11/5/2014 6:51 AM, A. Dennis Savarese wrote:
| Quote: |
Although the Russian and Chinese prop hubs appear very similar, the threads on the blade shanks of the Chinese blades are very coarse compared to the threads on the Russian blades. Thus it would require replacement of the castellated nut assemblies. If I remember correctly, the large, flat bearings are the same size. So maybe the assemblies are the same size too. I wonder if it is possible to remove the castellated nut assembly on the sides of the Chinese hub and install them in a blank Russian hub? If that were possible, I guess one could use a set of Chinese metal blades. But I don't know if the castellated nut assemblies will interchange or not.
Dennis
From: Roger Kemp <f16viperdoc(at)me.com> (f16viperdoc(at)me.com)
To: "yak-list(at)matronics.com" (yak-list(at)matronics.com) <yak-list(at)matronics.com> (yak-list(at)matronics.com)
Sent: Tuesday, November 4, 2014 7:19 PM
Subject: Re: Metal Prop
Copy Cory. I can understand your agist.
Doc
Sent from my iPad
On Nov 4, 2014, at 5:04 PM, Robin Hou <rmhou(at)yahoo.com (rmhou(at)yahoo.com)> wrote:
| Quote: |
Call M14P. They installed Chinese blades in Russian hub. But it was for ground tested only, I think. It never flew; not sure why.
On Tuesday, November 4, 2014 2:39 PM, Cory Robin <crobin(at)skyvantage.com (crobin(at)skyvantage.com)> wrote:
My M-14P is on a Wilga. I fly from backcountry/unimproved strips all the time.. Taking rocks through my all composite Whirlwind propeller is really proving to be bad news. So I'm open to options appropriate for my application.
Cory Robin
Chief Executive Officer
[img]cid:~WRD000.jpg[/img]
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UT 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook! www.facebook.com/skyvantage
On Tue, Nov 4, 2014 at 1:46 PM, Roger Kemp <f16viperdoc(at)me.com (f16viperdoc(at)me.com)> wrote:
Why? That composite wood prop is protective in its self. That small supercharger shaft is going take a beating with a prop strike with a metal prop. Not to say it won't with the wood but not as much damage will be transmitted to the other pinion gears as will be with a metal prop.
Doc
Sent from my iPad
On Nov 4, 2014, at 11:15 AM, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
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2http://www.matronics=================[/b][/quote]http://forums.matronics.com[/url]=====[/b] [/quote]3
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GeorgeCoy
Joined: 02 Dec 2010
Posts: 310
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| Posted: Wed Nov 05, 2014 5:41 am Post subject: Metal Prop |
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I understand. that is exactly why we had Hartzell develop a metal prop for the Moose. Particularly for the seaplane guys.
George
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Cory Robin
Sent: Tuesday, November 04, 2014 5:25 PM
To: yak-list(at)matronics.com
Subject: Re: Metal Prop
My M-14P is on a Wilga. I fly from backcountry/unimproved strips all the time.. Taking rocks through my all composite Whirlwind propeller is really proving to be bad news. So I'm open to options appropriate for my application.
Cory Robin
Chief Executive Officer
[img]cid:~WRD000.jpg[/img]
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UT 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook! www.facebook.com/skyvantage
On Tue, Nov 4, 2014 at 1:46 PM, Roger Kemp <f16viperdoc(at)me.com (f16viperdoc(at)me.com)> wrote:
Why? That composite wood prop is protective in its self. That small supercharger shaft is going take a beating with a prop strike with a metal prop. Not to say it won't with the wood but not as much damage will be transmitted to the other pinion gears as will be with a metal prop.
Doc
Sent from my iPad
On Nov 4, 2014, at 11:15 AM, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
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dsavarese0812(at)bellsout
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| Posted: Wed Nov 05, 2014 5:56 am Post subject: Metal Prop |
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dsavarese0812(at)bellsout
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| Posted: Wed Nov 05, 2014 7:02 am Post subject: Metal Prop |
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wlannon(at)shaw.ca
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| Posted: Wed Nov 05, 2014 9:34 am Post subject: Metal Prop |
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As is the Chinese Huosai engine. Max. engine RPM is 2350, with a gear ratio of 0.787 that is a Max. prop RPM of 1850.
Walt
From: Richard Goode (richard.goode(at)russianaeros.com)
Sent: Wednesday, November 05, 2014 5:36 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: RE: Metal Prop
The M 14 P is, of course, a geared engine, so the propeller turns at 0.658 times the speed of the engine. So at 101%, which equates to 2950 rpm, the propeller is turning at 1941 rpm!
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of A. Dennis Savarese
Sent: 05 November 2014 13:17
To: yak-list(at)matronics.com
Subject: Re: Yak-List: Metal Prop
Also, I don't know the max design RPM limits on the Chinese blades which turn 2400/2450 when installed on the HS6A engine. Turning them up to the M14 capable RPM of 2900 could possibly stress the blades more than they were designed to be run at. If Jill at M14P did some testing on this, she may know the answer.
Dennis
| Quote: | | A. Dennis Savarese334-546-8182 (mobile)www.yak-52.comSkype - Yakguy1 |
On 11/5/2014 6:51 AM, A. Dennis Savarese wrote:
| Quote: |
Although the Russian and Chinese prop hubs appear very similar, the threads on the blade shanks of the Chinese blades are very coarse compared to the threads on the Russian blades. Thus it would require replacement of the castellated nut assemblies. If I remember correctly, the large, flat bearings are the same size. So maybe the assemblies are the same size too. I wonder if it is possible to remove the castellated nut assembly on the sides of the Chinese hub and install them in a blank Russian hub? If that were possible, I guess one could use a set of Chinese metal blades. But I don't know if the castellated nut assemblies will interchange or not.
Dennis
From: Roger Kemp mailto:f16viperdoc(at)me.com (f16viperdoc(at)me.com)
To: mailto:yak-list(at)matronics.com (yak-list(at)matronics.com) mailto:yak-list(at)matronics.com (yak-list(at)matronics.com)
Sent: Tuesday, November 4, 2014 7:19 PM
Subject: Re: Metal Prop
Copy Cory. I can understand your agist.
Doc
Sent from my iPad
On Nov 4, 2014, at 5:04 PM, Robin Hou <rmhou(at)yahoo.com (rmhou(at)yahoo.com)> wrote:
| Quote: |
Call M14P. They installed Chinese blades in Russian hub. But it was for ground tested only, I think. It never flew; not sure why.
On Tuesday, November 4, 2014 2:39 PM, Cory Robin <crobin(at)skyvantage.com (crobin(at)skyvantage.com)> wrote:
My M-14P is on a Wilga. I fly from backcountry/unimproved strips all the time.. Taking rocks through my all composite Whirlwind propeller is really proving to be bad news. So I'm open to options appropriate for my application.
Cory Robin
Chief Executive Officer
[img]cid:FE81F327F98944C4B54FE944BB73ACC4(at)WalterHP[/img]
SkyVantage Corporation
5526 West 13400 South, Suite 207
Herriman, UT 84096
United States of America
US Ph. +1-801-649-2925 ext. 301
Skype: skyvantage (calls only) ext. 301
Email: crobin(at)skyvantage.com (crobin(at)skyvantage.com)
Website: http://www.skyvantage.com
Join us on Facebook! www.facebook.com/skyvantage
On Tue, Nov 4, 2014 at 1:46 PM, Roger Kemp <f16viperdoc(at)me.com (f16viperdoc(at)me.com)> wrote:
Why? That composite wood prop is protective in its self. That small supercharger shaft is going take a beating with a prop strike with a metal prop. Not to say it won't with the wood but not as much damage will be transmitted to the other pinion gears as will be with a metal prop.
Doc
Sent from my iPad
On Nov 4, 2014, at 11:15 AM, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
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dsavarese0812(at)bellsout
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| Posted: Wed Nov 05, 2014 10:02 am Post subject: Metal Prop |
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Egon
Joined: 01 Jul 2012
Posts: 23
Location: Australia
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| Posted: Wed Nov 05, 2014 12:30 pm Post subject: Re: Metal Prop |
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I doubt that the Chinese two blader would handle the extra power of the M14. I suspect it would have trouble governing the max RPM.
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LinJun
Joined: 18 Aug 2013
Posts: 7
Location: China
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| Posted: Sun Nov 09, 2014 6:01 am Post subject: Re: Metal Prop |
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| Egon wrote: | | I doubt that the Chinese two blader would handle the extra power of the M14. I suspect it would have trouble governing the max RPM. |
Two blade Chinese prop named J9-G1, you can not install it on M-14P. JB-2A is 3-blade metal prop for 4000hp HS-6K, only JL-2B can fit M-14P.
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