|
-
POSTING RULES

-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|

07-16-2009, 08:27 PM
|
 |
|
|
Join Date: Feb 2006
Location: Peachtree City, Georgia
Posts: 440
|
|
In-Air Adjustable Prop
A friend of mine mentioned a prop that used to be around but is probably not used much any more - two positions adjustable in the air. Climb or Cruise. Not really a constant speed, just two positions.
Any history buffs out there?
John
__________________
John Goodman - 40572
First flight was 25 June, 2011
N711JG
|

07-16-2009, 08:53 PM
|
 |
Senior Curmudgeon
|
|
Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
|
|
Aeromatic.
Was common on Bellanca, and other high perf aircraft of the era.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
Last edited by Mike S : 07-16-2009 at 08:56 PM.
|

07-17-2009, 09:10 AM
|
|
|
|
Join Date: May 2005
Location: Mandeville, Louisiana
Posts: 179
|
|
Aeromatic
Quote:
Originally Posted by Mike S
Aeromatic.
Was common on Bellanca, and other high perf aircraft of the era.
|
Intersting site. Anyboby have experience with this prop on an RV or plane with similar speeds?
I wonder how it would do in acro.
__________________
Dale Lambert
RV-6 Flying, XPIO360 Catto 3bld AFS3500EE
'68' C177
|

07-17-2009, 09:38 AM
|
 |
Senior Curmudgeon
|
|
Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
|
|
Quote:
Originally Posted by whifof100ll
Intersting site. Anyboby have experience with this prop on an RV or plane with similar speeds?
I wonder how it would do in acro.
|
Pretty sure these are no longer around, outside of maybe a few restored antiques.
I tried to get one 20 years ago for my old Stinson, couldn't find one that was airworthy at that time.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
|

07-17-2009, 10:37 PM
|
|
|
|
Join Date: Mar 2008
Location: Seattle
Posts: 1,412
|
|
Aeromatic:
"TARVER PROPELLERS, LLC owns the rights, engineering, tooling and Type Certificates for the above propeller and propeller blades."
I doubt you would want one, as they are effected by altitude, or air density if you prefer. I'm not sure, but I don't think they have one for an RV equivalent application? Give 'em a call.
Avia:
Makes or made one that has a funny shaped spinner with little vanes around the edge that were used on aerobatic Zlins etc. I think that would be what you should check into. Although it might be spendy or made of unobtainium. 
Here's a link to one applicable to a Cessna 172, with a limit of 120Kw output.
http://www.aviapropeller.com/pdf/V50...en%20kompl.pdf
I was somewhat interested because my homebrew powerplant has a solid prop shaft, but I went with that dependable favorite, the CATTO.
__________________
Scott Emery
http://gallery.eaa326.org/v/members/semery/
EAA 668340, chapter 326 & IAC chapter 67
RV-8 N89SE first flight 12/26/2013
Yak55M, and the wife has an RV-4
There is nothing-absolute nothing-half so much worth doing as simply messing around with Aeroplanes
(with apologies to Ratty)
2019
|

08-03-2009, 10:31 AM
|
 |
|
|
Join Date: Jan 2005
Location: SC
Posts: 12,887
|
|
My O-290-D2(B) was set up for an adjustable pitch prop when it was first installed in a PA-18 Super Cub.
They used this for crop dusting with the Super Cub. This was not a constant speed prop as it was up to the pilot to adjust the prop pitch as needed.
Prior to converting my engine to accept a fixed pitch prop I looked into finding one of these props. They simply don't exist any longer and I was told that if I found one, the wood blades would probably be rotted and it was unlikely the prop hubs would be serviceable.
I tried to find one and the only one I was able to locate was rusted beyond any hope.
A CS prop is the best way to go, if you want an adjustable pitch prop.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
|

08-03-2009, 10:56 AM
|
 |
|
|
Join Date: Jan 2006
Location: New Smyrna Beach, FL
Posts: 1,339
|
|
I used to own a '57 Tri-Pacer. It had a manifold pressure gauge, but a fixed pitch prop. I always wondered why it had a MP gauge and finally found that it had a two position, in-air adjustable propeller on it when it was new. Must have been a fairly common set up during that time period.
__________________
David Maib
RV-10 N380DM
New Smyrna Beach, FL
VAF Paid 1/21/2020
"In '69 I was 21, and I called the road my own"
Jackson Browne
|

08-03-2009, 11:29 AM
|
|
|
|
Join Date: Apr 2008
Location: Lake Havasu City AZ
Posts: 2,393
|
|
PROP
The prop that John asked about IS NOT the Aeromatic but is the Sensenich Skyblade, which was a two position controllable. used mostly on Pipers in the late 40's. There was a rather expensive 100 hour AD, so most of these were replaced years ago. The Aeromatics are mostly fully automatic with the exception of some that had what was referred to as an "altitude control". I have flown airplanes with the standard Aeromatic, but not with the altitude control. The Aeromatic was widely used on Stinsons, Bellancas and Pipers. They are still used on aircraft such as the Clip Wing Monocoupe, Cessna Airmaster etc.
|

08-03-2009, 02:32 PM
|
|
|
|
Join Date: Oct 2005
Location: Savannah, GA
Posts: 1,849
|
|
I have an electric adjustable prop on my plane. Takes a little more work and thinking than a constant speed but it works fine.
__________________
Todd
N110TD
RV-10 Vesta V8 LS2/BMA EFIS/One formerly flying at 3J1 Hobbs stopped at 150 hours
Savannah, GA and Ridgeland, SC
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 12:27 AM.
|