Today's Message Index:
----------------------
1. 06:11 AM - Re: Bad Fuel (Hans Vander Voort)
2. 06:11 AM - Re: Completed Piet in Sport Aviation (Hans Vander Voort)
3. 07:49 AM - Re: First flight.. (Jeff Boatright)
4. 09:02 AM - Re: First flight.. (Gene & Tammy)
5. 09:17 AM - Re: First flight.. (Hans Vander Voort)
6. 10:03 AM - Re: First flight.. (Gary Gower)
7. 10:37 AM - Re: First flight.. (Gene & Tammy)
8. 10:47 AM - Re: First flight.. ()
9. 11:19 AM - Re: First flight.. (James Dallas)
10. 11:22 AM - Re: First flight.. (bike.mike)
11. 12:05 PM - Re: First flight.. (Hans Vander Voort)
12. 12:12 PM - Re: First flight.. ()
13. 12:16 PM - Re: First flight.. (Hans Vander Voort)
14. 12:23 PM - Re: First flight.. (Robert Gow)
15. 12:41 PM - Re: First flight.. (Graham Hansen)
16. 07:24 PM - Re: props on corvair motors (Roman Bukolt)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Pietenpol-List message posted by: Hans Vander Voort <hans.vander.voort@alfalaval.com>
Shad
I run a Tennessee prop 64 x 34
Static is about 2900 RPM
Hans
shad bell
<aviatorbell@yaho
o.com> To
Sent by: pietenpol-list@matronics.com
owner-pietenpol-l cc
ist-server@matron
ics.com Subject
Re: Pietenpol-List: Bad Fuel
09/09/2006 12:05
AM
Please respond to
pietenpol-list@ma
tronics.com
Man! that sounds all too famillar. We ran only 100LL in our corvair but
that sounds like similar symtoms. Eventually our crank broke and luckly we
did not tear up the airplane. I'm by far no expert on corvairs but what is
your static rpm, climb-out rpm and what prop are you using. We are
grounded, probobly untill next spring when we rebuild another engine. We
are using a Heggy 66-30 (I believe) wodden prop and we were getting
3150-3300 static. I'm just currious about others performance with the
corvairs.
Shad
Hans Vander Voort <hans.vander.voort@alfalaval.com> wrote:
--> Pietenpol-List message posted by: Hans Vander Voort
Well it's awfully quiet on the list for the last few days
Here is something to get things started:
I went out flying yesterday in the Piet, another hot afternoon but
humidity
was for a change below 50%
I took of to the North and made a wide circle around the home field
climbing up to 1200 feet.
Dove hunting season has started in Texas, so low and slow is asking for
trouble. (FLAK)
10 minutes in to the flight my Corvair engine CHT climbed up to 475 F,
that
never happened before thus I set up for a landing.
On final temperature dropped again (engine idling), while on the ground I
did another run up, everything checked out OK
Decided to take her up again. During climb out at 500 feet the engine
became erratic and dropped a good 500 RPM.
I decided to land right away, engine ran fine again when power was
reduced.
I strongly suspect that my recent fill-up with Mogas was not the octane
level as was advertised, every thing indicated detonation.
It is hard to hear in a open cockpit but I did hear a
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Completed Piet in Sport Aviation |
--> Pietenpol-List message posted by: Hans Vander Voort <hans.vander.voort@alfalaval.com>
I had send that picture in twelve months ago.
Yes, I believe Mogas was the culprit.
Did not find any water in the fuel but did have some dirt in the
gascolator.
Drained the fuel tank and flushed the complete fuel system.
I will pull the cylinder heads this weekend, just to make sure nothing else
is wrong
Hans
Rcaprd@aol.com
Sent by:
owner-pietenpol-l To
ist-server@matron pietenpol-list@matronics.com
ics.com cc
Subject
09/11/2006 08:42 Re: Pietenpol-List: Completed Piet
PM in Sport Aviation
Please respond to
pietenpol-list@ma
tronics.com
In a message dated 9/11/2006 11:46:57 AM Central Standard Time,
johnegan99@yahoo.com writes:
Congratulations goes to Hans Van der Voort. I see Hans has complimented
the "completions" section of the recent "EAA Sport Aviation" magazine with
his Pietenpol. Nice work Hans.
Do not archive.
Yes, I saw that one. Congrats to Hans !!
Hey Hans, did you confirm that the MoGas was the culprit on your last
flight ? I'm very interested in your conclusion, and I'm sure many others
are too.
Chuck G.
NX770CG
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Pietenpol-List message posted by: Jeff Boatright <jboatri@emory.edu>
If you're well above stall speed, what is the problem with a steep climb-out?
At 7:17 PM -0400 9/16/06, <harvey.rule@bell.ca> wrote:
>--> Pietenpol-List message posted by: <harvey.rule@bell.ca>
>
>Take off was much better today but according to observers I was still
>doing the ultralight thing by bringing the nose of the plane up too far
>and taking off at too sharpe an angle.Old habits are hard to correct.I
>thought I did it a lot better.I'll have to improve more on the next
>flight.
--
_____________________________________________________________
Jeffrey H. Boatright, PhD
Associate Professor, Emory Eye Center, Atlanta, GA, USA
Senior Editor, Molecular Vision, http://www.molvis.org/molvis
mailto:jboatri@emory.edu
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: First flight.. |
--> Pietenpol-List message posted by: "Gene & Tammy" <zharvey@bellsouth.net>
Jeff,
I'd like to throw my two cents in on the question "what's wrong with a steep
climb out?".
I come from a back ground of both general avation and two stroke airplanes
and I'm familiar with both. I currently own and fly a Piet (N502R) with a
Continental A 65 and my plane before it was an Avid with a 75 HP 2 stroke.
Plus I've owned and flown a number of others. Loved them all.
The problem with a steep climb out on take off is if your engine quites you
won't have time to get the nose down into a glide (flying speed) before you
return to earth. Not good on airframes or human anatomy. I've spent most
of my life in Alaska and it has never stopped amazing me how many Alaskan
pilots manage to kill themselves and others with a steep climb out. One
friend of mine (and a very experienced pilot) took off from his home field
in his Super Cub with his small son and his father-in-law on board. His
wife and mother-in-law were watching from their living room window. Steep
climb out, engine died and so did all three on board (with wife and
mother-in-law still watching.). That next winter another pilot that we had
both known was killed doing the same thing from a frozen lake. He had put
his cub into a steep takeoff climb, showing off to his friends on the
ground. He died because he had neglected to turn on his fuel switch and in
a steep climbout he just didn't have the speed or altitude to keep from
stalling out.
Try this. Go up to about 2500 or higher, put your plane into a steep climb
just above stall speed, note your altitude and turn the engine off. Once
you have your plane back under control and your flying again note your
altitude and restart your engine. It'll make a believer out of you.
The way I look at it, is that I do enough dumb things while flying that I
don't need to do the dumb things that I know will get me killed.
Gene
riginal Message -----
From: "Jeff Boatright" <jboatri@emory.edu>
Sent: Monday, September 18, 2006 9:44 AM
Subject: RE: Pietenpol-List: First flight..
> --> Pietenpol-List message posted by: Jeff Boatright <jboatri@emory.edu>
>
> If you're well above stall speed, what is the problem with a steep
> climb-out?
>
>
> At 7:17 PM -0400 9/16/06, <harvey.rule@bell.ca> wrote:
>>--> Pietenpol-List message posted by: <harvey.rule@bell.ca>
>>
>>Take off was much better today but according to observers I was still
>>doing the ultralight thing by bringing the nose of the plane up too far
>>and taking off at too sharpe an angle.Old habits are hard to correct.I
>>thought I did it a lot better.I'll have to improve more on the next
>>flight.
>
> --
>
> _____________________________________________________________
> Jeffrey H. Boatright, PhD
> Associate Professor, Emory Eye Center, Atlanta, GA, USA
> Senior Editor, Molecular Vision, http://www.molvis.org/molvis
> mailto:jboatri@emory.edu
>
>
>
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Pietenpol-List message posted by: Hans Vander Voort <hans.vander.voort@alfalaval.com>
The problem is Angle Of Attack, not the steep climb.
With a high AOA you can have a stall well above stall speed.
All this is not very likely with a Pietenpol as the speed range is not all
that large.
I suggest you make a number of test flights at different climb speeds and
log the climb rate for each speed.
You are looking for the best climb rate for normal operation.
My Piet best initial climb rate is 750 ft/min at 55 Mph. (achieved on a
cool winter day)
This is measured over one minute beginning when lined up on the runway,
(push stopwatch, push full throttle, count of one minute and log altitude)
while speed never exceeds 55 Mph.
Do this at 40 Mph and your have a higher AOA (steep attitude) but not a
higher altitude at the end of the minute.
Before you do all this check your stall speed first at safe altitude,
Calibrate your ASI and practice, practice and practice slow speed fleet
first.
Typical stall speed of a Piet is around 30 Mph.
And the above intial climb procedure should not be done below 40 Mph.
If you want to test climb speeds at around 30 Mph than get some altitude
first!
Be safe!
Hans
Jeff Boatright
<jboatri@emory.ed
u> To
Sent by: pietenpol-list@matronics.com
owner-pietenpol-l cc
ist-server@matron
ics.com Subject
RE: Pietenpol-List: First flight..
09/18/2006 09:44
AM
Please respond to
pietenpol-list@ma
tronics.com
--> Pietenpol-List message posted by: Jeff Boatright <jboatri@emory.edu>
If you're well above stall speed, what is the problem with a steep
climb-out?
At 7:17 PM -0400 9/16/06, <harvey.rule@bell.ca> wrote:
>--> Pietenpol-List message posted by: <harvey.rule@bell.ca>
>
>Take off was much better today but according to observers I was still
>doing the ultralight thing by bringing the nose of the plane up too far
>and taking off at too sharpe an angle.Old habits are hard to correct.I
>thought I did it a lot better.I'll have to improve more on the next
>flight.
--
_____________________________________________________________
Jeffrey H. Boatright, PhD
Associate Professor, Emory Eye Center, Atlanta, GA, USA
Senior Editor, Molecular Vision, http://www.molvis.org/molvis
mailto:jboatri@emory.edu
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: First flight.. |
Hello Jeff,
One very important note: The 2,500 ft that Gene is talking about in this test
have to be above ground level, or ASL if you do the test over the ocean...
3 friends from our club have died from take off stall (in 15 years)...
Is the worse thing to happen... all the friends are watching the pilot get killed.
Very sad, one has to notify the family... Worse. Also explain to our
families and friends that aviation is safe, at every reunion for years Too
much work, Lets all fly safe please.
Saludos
Gary Gower.
Flying from Chapala, Mexico.
Gene & Tammy <zharvey@bellsouth.net> wrote: --> Pietenpol-List message posted by:
"Gene & Tammy"
Jeff,
I'd like to throw my two cents in on the question "what's wrong with a steep
climb out?".
I come from a back ground of both general avation and two stroke airplanes
and I'm familiar with both. I currently own and fly a Piet (N502R) with a
Continental A 65 and my plane before it was an Avid with a 75 HP 2 stroke.
Plus I've owned and flown a number of others. Loved them all.
The problem with a steep climb out on take off is if your engine quites you
won't have time to get the nose down into a glide (flying speed) before you
return to earth. Not good on airframes or human anatomy. I've spent most
of my life in Alaska and it has never stopped amazing me how many Alaskan
pilots manage to kill themselves and others with a steep climb out. One
friend of mine (and a very experienced pilot) took off from his home field
in his Super Cub with his small son and his father-in-law on board. His
wife and mother-in-law were watching from their living room window. Steep
climb out, engine died and so did all three on board (with wife and
mother-in-law still watching.). That next winter another pilot that we had
both known was killed doing the same thing from a frozen lake. He had put
his cub into a steep takeoff climb, showing off to his friends on the
ground. He died because he had neglected to turn on his fuel switch and in
a steep climbout he just didn't have the speed or altitude to keep from
stalling out.
Try this. Go up to about 2500 or higher, put your plane into a steep climb
just above stall speed, note your altitude and turn the engine off. Once
you have your plane back under control and your flying again note your
altitude and restart your engine. It'll make a believer out of you.
The way I look at it, is that I do enough dumb things while flying that I
don't need to do the dumb things that I know will get me killed.
Gene
riginal Message -----
From: "Jeff Boatright"
Sent: Monday, September 18, 2006 9:44 AM
Subject: RE: Pietenpol-List: First flight..
> --> Pietenpol-List message posted by: Jeff Boatright
>
> If you're well above stall speed, what is the problem with a steep
> climb-out?
>
>
> At 7:17 PM -0400 9/16/06, wrote:
>>--> Pietenpol-List message posted by:
>>
>>Take off was much better today but according to observers I was still
>>doing the ultralight thing by bringing the nose of the plane up too far
>>and taking off at too sharpe an angle.Old habits are hard to correct.I
>>thought I did it a lot better.I'll have to improve more on the next
>>flight.
>
> --
>
> _____________________________________________________________
> Jeffrey H. Boatright, PhD
> Associate Professor, Emory Eye Center, Atlanta, GA, USA
> Senior Editor, Molecular Vision, http://www.molvis.org/molvis
> mailto:jboatri@emory.edu
>
---------------------------------
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: First flight.. |
Gary,
Thank you for making AGL clear. I made an error when I assumed I was
making it clear. It's that kind of mistake that can get someone killed.
Again, thank you
Gene----- Original Message -----
From: Gary Gower
To: pietenpol-list@matronics.com
Sent: Monday, September 18, 2006 12:02 PM
Subject: Re: Pietenpol-List: First flight..
Hello Jeff,
One very important note: The 2,500 ft that Gene is talking about in
this test have to be above ground level, or ASL if you do the test
over the ocean...
3 friends from our club have died from take off stall (in 15 years)...
Is the worse thing to happen... all the friends are watching the
pilot get killed. Very sad, one has to notify the family... Worse.
Also explain to our families and friends that aviation is safe, at
every reunion for years Too much work, Lets all fly safe please.
Saludos
Gary Gower.
Flying from Chapala, Mexico.
Gene & Tammy <zharvey@bellsouth.net> wrote:
--> Pietenpol-List message posted by: "Gene & Tammy"
Jeff,
I'd like to throw my two cents in on the question "what's wrong with
a steep
climb out?".
I come from a back ground of both general avation and two stroke
airplanes
and I'm familiar with both. I currently own and fly a Piet (N502R)
with a
Continental A 65 and my plane before it was an Avid with a 75 HP 2
stroke.
Plus I've owned and flown a number of others. Loved them all.
The problem with a steep climb out on take off is if your engine
quites you
won't have time to get the nose down into a glide (flying speed)
before you
return to earth. Not good on airframes or human anatomy. I've spent
most
of my life in Alaska and it has never stopped amazing me how many
Alaskan
pilots manage to kill themselves and others with a steep climb out.
One
friend of mine (and a very experienced pilot) took off from his home
field
in his Super Cub with his small son and his father-in-law on board.
His
wife and mother-in-law were watching from their living room window.
Steep
climb out, engine died and so did all three on board (with wife and
mother-in-law still watching.). That next winter another pilot that
we had
both known was killed doing the same thing from a frozen lake. He
had put
his cub into a steep takeoff climb, showing off to his friends on
the
ground. He died because he had neglected to turn on his fuel switch
and in
a steep climbout he just didn't have the speed or altitude to keep
from
stalling out.
Try this. Go up to about 2500 or higher, put your plane into a steep
climb
just above stall speed, note your altitude and turn the engine off.
Once
you have your plane back under control and your flying again note
your
altitude and restart your engine. It'll make a believer out of you.
The way I look at it, is that I do enough dumb things while flying
that I
don't need to do the dumb things that I know will get me killed.
Gene
riginal Message -----
From: "Jeff Boatright"
To:
Sent: Monday, September 18, 2006 9:44 AM
Subject: RE: Pietenpol-List: First flight..
> --> Pietenpol-List message posted by: Jeff Boatright
>
> If you're well above stall speed, what is the problem with a steep
> climb-out?
>
>
>
> At 7:17 PM -0400 9/16/06, wrote:
>>--> Pietenpol-List message posted by:
>>
>>Take off was much better today but according to observers I was
still
>>doing the ultralight thing by bringing the nose of the plane up
too far
>>and taking off at too sharpe an angle.Old habits are hard to
correct.I
>>thought I did it a lot better.I'll have to improve more on the
next
>>flight.
>
> --
>
> _____________________________________________________________
> Jeffrey H. Boatright, PhD
> Associate Professor, Emory Eye Center, Atlanta, GA, USA
> Senior Editor, Molecular Vision, http://www.molvis.org/molvis
> mailto:jboatri@emory.edu
>
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I noticed that some pilots set their altimeter to zero at the location
their plane is and others will add in the level they are above sea level
or what the book sez the airstrip is above sea level.What is the correct
way?In my own mind,I always figured it was good to zero at the level you
were at and go from there.Thanks for any info you can give on this in
advance.
________________________________
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Gene &
Tammy
Sent: September 18, 2006 1:36 PM
Subject: Re: Pietenpol-List: First flight..
Gary,
Thank you for making AGL clear. I made an error when I assumed I was
making it clear. It's that kind of mistake that can get someone killed.
Again, thank you
Gene----- Original Message -----
From: Gary Gower <mailto:ggower_99@yahoo.com>
To: pietenpol-list@matronics.com
Sent: Monday, September 18, 2006 12:02 PM
Subject: Re: Pietenpol-List: First flight..
Hello Jeff,
One very important note: The 2,500 ft that Gene is talking
about in this test have to be above ground level, or ASL if you do
the test over the ocean...
3 friends from our club have died from take off stall (in 15
years)...
Is the worse thing to happen... all the friends are watching
the pilot get killed. Very sad, one has to notify the family...
Worse. Also explain to our families and friends that aviation is
safe, at every reunion for years Too much work, Lets all fly safe
please.
Saludos
Gary Gower.
Flying from Chapala, Mexico.
Gene & Tammy <zharvey@bellsouth.net> wrote:
--> Pietenpol-List message posted by: "Gene & Tammy"
Jeff,
I'd like to throw my two cents in on the question "what's wrong
with a steep
climb out?".
I come from a back ground of both general avation and two stroke
airplanes
and I'm familiar with both. I currently own and fly a Piet
(N502R) with a
Continental A 65 and my plane before it was an Avid with a 75 HP
2 stroke.
Plus I've owned and flown a number of others. Loved them all.
The problem with a steep climb out on take off is if your engine
quites you
won't have time to get the nose down into a glide (flying speed)
before you
return to earth. Not good on airframes or human anatomy. I've
spent most
of my life in Alaska and it has never stopped amazing me how
many Alaskan
pilots manage to kill themselves and others with a steep climb
out. One
friend of mine (and a very experienced pilot) took off from his
home field
in his Super Cub with his small son and his father-in-law on
board. His
wife and mother-in-law were watching from their living room
window. Steep
climb out, engine died and so did all three on board (with wife
and
mother-in-law still watching.). That next winter another pilot
that we had
both known was killed doing the same thing from a frozen lake.
He had put
his cub into a steep takeoff climb, showing off to his friends
on the
ground. He died because he had neglected to turn on his fuel
switch and in
a steep climbout he just didn't have the speed or altitude to
keep from
stalling out.
Try this. Go up to about 2500 or higher, put your plane into a
steep climb
just above stall speed, note your altitude and turn the engine
off. Once
you have your plane back under control and your flying again
note your
altitude and restart your engine. It'll make a believer out of
you.
The way I look at it, is that I do enough dumb things while
flying that I
don't need to do the dumb things that I know will get me killed.
Gene
riginal Message -----
From: "Jeff Boatright"
To:
Sent: Monday, September 18, 2006 9:44 AM
Subject: RE: Pietenpol-List: First flight..
> --> Pietenpol-List message posted by: Jeff Boatright
>
> If you're well above stall speed, what is the problem with a
steep
> climb-out?
>
>
>
> At 7:17 PM -0400 9/16/06, wrote:
>>--> Pietenpol-List message posted by:
>>
>>Take off was much better today but according to observers I
was still
>>doing the ultralight thing by bringing the nose of the plane
up too far
>>and taking off at too sharpe an angle.Old habits are hard to
correct.I
>>thought I did it a lot better.I'll have to improve more on the
next
>>flight.
>
> --
>
> _____________________________________________________________
> Jeffrey H. Boatright, PhD
> Associate Professor, Emory Eye Center, Atlanta, GA, USA
> Senior Editor, Molecular Vision, http://www.molvis.org/molvis
> mailto:jboatri@emory.edu
>
ronics.com/Navigator?Pietenpol-List
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: First flight.. |
Hans, Don't confuse deck angle with angle of attack. It has to do with
the relative air in which you are moving thru and it doesn't know
whether you are climbing, descending or strait and level. With the nose
pointed strait down you can exceed the critical angle of attack and get
into a stall. Go to an airshow and watch the pros. To do a snap roll
in a dive they are basically entering into a spin and to spin you must
first stall.
Jim Dallas
----- Original Message -----
From: Hans Vander Voort<mailto:hans.vander.voort@alfalaval.com>
To: pietenpol-list@matronics.com<mailto:pietenpol-list@matronics.com>
Sent: Monday, September 18, 2006 11:16 AM
Subject: RE: Pietenpol-List: First flight..
--> Pietenpol-List message posted by: Hans Vander Voort
<hans.vander.voort@alfalaval.com<mailto:hans.vander.voort@alfalaval.com>>
The problem is Angle Of Attack, not the steep climb.
With a high AOA you can have a stall well above stall speed.
All this is not very likely with a Pietenpol as the speed range is not
all
that large.
I suggest you make a number of test flights at different climb speeds
and
log the climb rate for each speed.
You are looking for the best climb rate for normal operation.
My Piet best initial climb rate is 750 ft/min at 55 Mph. (achieved on
a
cool winter day)
This is measured over one minute beginning when lined up on the
runway,
(push stopwatch, push full throttle, count of one minute and log
altitude)
while speed never exceeds 55 Mph.
Do this at 40 Mph and your have a higher AOA (steep attitude) but not
a
higher altitude at the end of the minute.
Before you do all this check your stall speed first at safe altitude,
Calibrate your ASI and practice, practice and practice slow speed
fleet
first.
Typical stall speed of a Piet is around 30 Mph.
And the above intial climb procedure should not be done below 40 Mph.
If you want to test climb speeds at around 30 Mph than get some
altitude
first!
Be safe!
Hans
Jeff Boatright
<jboatri@emory.ed<mailto:jboatri@emory.ed>
u>
To
Sent by:
pietenpol-list@matronics.com<mailto:pietenpol-list@matronics.com>
owner-pietenpol-l
cc
ist-server@matron<mailto:ist-server@matron>
ics.com
Subject
RE: Pietenpol-List: First
flight..
09/18/2006 09:44
AM
Please respond to
pietenpol-list@ma<mailto:pietenpol-list@ma>
tronics.com
--> Pietenpol-List message posted by: Jeff Boatright
<jboatri@emory.edu<mailto:jboatri@emory.edu>>
If you're well above stall speed, what is the problem with a steep
climb-out?
At 7:17 PM -0400 9/16/06,
<harvey.rule@bell.ca<mailto:harvey.rule@bell.ca>> wrote:
>--> Pietenpol-List message posted by:
<harvey.rule@bell.ca<mailto:harvey.rule@bell.ca>>
>
>Take off was much better today but according to observers I was still
>doing the ultralight thing by bringing the nose of the plane up too
far
>and taking off at too sharpe an angle.Old habits are hard to
correct.I
>thought I did it a lot better.I'll have to improve more on the next
>flight.
--
_____________________________________________________________
Jeffrey H. Boatright, PhD
Associate Professor, Emory Eye Center, Atlanta, GA, USA
Senior Editor, Molecular Vision,
http://www.molvis.org/molvis<http://www.molvis.org/molvis>
mailto:jboatri@emory.edu<mailto:jboatri@emory.edu>
http://www.matronics.com/Navigator?Pietenpol-List<http://www.matronics.co
m/Navigator?Pietenpol-List>
http://www.matronics.com/contribution<http://www.matronics.com/contributi
on>
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: First flight.. |
That's what sky divers do.
Pilots, on the other hand, set their altimeters to the altitude at which
the airplane sets. (If you were at Leadville, Colorado, and tried to
set your altimeter to zero, you would break it.)
Always set to actual field elevation when on the ground or to local
altimeter setting (sea-level equivalent barometric pressure, given in
inches of mercury) when flying. That way you don't have to get into
mental math when you go to a different field at a different elevation.
----- Original Message -----
From: harvey.rule@bell.ca
To: pietenpol-list@matronics.com
Sent: Monday, September 18, 2006 10:46 AM
Subject: RE: Pietenpol-List: First flight..
I noticed that some pilots set their altimeter to zero at the location
their plane is and others will add in the level they are above sea level
or what the book sez the airstrip is above sea level.What is the correct
way?In my own mind,I always figured it was good to zero at the level you
were at and go from there.Thanks for any info you can give on this in
advance.
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: First flight.. |
Jim,
I am not, but perhaps I was not entirely clear.
I was merely trying to make the point that paying attention to safe air
speed is more important than the steep climb.
I frequently take off in to a 10 Mph head wind ( this is 10 at ground
level)
At 500 feet this head wind can gradually increase to 20 Mph.
Seen from the ground your have now a very steep climb ( your forward,
ground speed is very slow)
Yet, your AOA is less than stall angle.
I do not believe you can get a high speed stall in Pietenpol, the speed
range is fairly small.
Did anyone ever achieve a snap roll in a Pietenpol ( someone was bragging
about a Lomchevak once)
(Embedded image moved to file: pic27446.jpg)
.
Hans
"James Dallas"
<BEC176@msn.com>
Sent by: To
owner-pietenpol-l <pietenpol-list@matronics.com>
ist-server@matron cc
ics.com
Subject
Re: Pietenpol-List: First flight..
09/18/2006 01:18
PM
Please respond to
pietenpol-list@ma
tronics.com
Hans, Don't confuse deck angle with angle of attack. It has to do with the
relative air in which you are moving thru and it doesn't know whether you
are climbing, descending or strait and level. With the nose pointed strait
down you can exceed the critical angle of attack and get into a stall. Go
to an airshow and watch the pros. To do a snap roll in a dive they are
basically entering into a spin and to spin you must first stall.
Jim Dallas
----- Original Message -----
From: Hans Vander Voort
To: pietenpol-list@matronics.com
Sent: Monday, September 18, 2006 11:16 AM
Subject: RE: Pietenpol-List: First flight..
--> Pietenpol-List message posted by: Hans Vander Voort <
hans.vander.voort@alfalaval.com>
The problem is Angle Of Attack, not the steep climb.
With a high AOA you can have a stall well above stall speed.
All this is not very likely with a Pietenpol as the speed range is not all
that large.
I suggest you make a number of test flights at different climb speeds and
log the climb rate for each speed.
You are looking for the best climb rate for normal operation.
My Piet best initial climb rate is 750 ft/min at 55 Mph. (achieved on a
cool winter day)
This is measured over one minute beginning when lined up on the runway,
(push stopwatch, push full throttle, count of one minute and log altitude)
while speed never exceeds 55 Mph.
Do this at 40 Mph and your have a higher AOA (steep attitude) but not a
higher altitude at the end of the minute.
Before you do all this check your stall speed first at safe altitude,
Calibrate your ASI and practice, practice and practice slow speed fleet
first.
Typical stall speed of a Piet is around 30 Mph.
And the above intial climb procedure should not be done below 40 Mph.
If you want to test climb speeds at around 30 Mph than get some altitude
first!
Be safe!
Hans
Jeff Boatright
<jboatri@emory.ed
u> To
Sent by: pietenpol-list@matronics.com
owner-pietenpol-l cc
ist-server@matron
ics.com Subject
RE: Pietenpol-List: First flight..
09/18/2006 09:44
AM
Please respond to
pietenpol-list@ma
tronics.com
--> Pietenpol-List message posted by: Jeff Boatright <jboatri@emory.edu>
If you're well above stall speed, what is the problem with a steep
climb-out?
At 7:17 PM -0400 9/16/06, <harvey.rule@bell.ca> wrote:
>--> Pietenpol-List message posted by: <harvey.rule@bell.ca>
>
>Take off was much better today but according to observers I was still
>doing the ultralight thing by bringing the nose of the plane up too far
>and taking off at too sharpe an angle.Old habits are hard to correct.I
>thought I did it a lot better.I'll have to improve more on the next
>flight.
--
_____________________________________________________________
Jeffrey H. Boatright, PhD
Associate Professor, Emory Eye Center, Atlanta, GA, USA
Senior Editor, Molecular Vision, http://www.molvis.org/molvis
mailto:jboatri@emory.edu
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Pietenpol-List message posted by: <harvey.rule@bell.ca>
Jeeeeeze I can't imagine anyone even wanting to try a snap Role in a
Piet.
Do not archive
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Hans
Vander Voort
Sent: September 18, 2006 3:04 PM
Subject: Re: Pietenpol-List: First flight..
Jim,
I am not, but perhaps I was not entirely clear.
I was merely trying to make the point that paying attention to safe air
speed is more important than the steep climb.
I frequently take off in to a 10 Mph head wind ( this is 10 at ground
level)
At 500 feet this head wind can gradually increase to 20 Mph.
Seen from the ground your have now a very steep climb ( your forward,
ground speed is very slow)
Yet, your AOA is less than stall angle.
I do not believe you can get a high speed stall in Pietenpol, the speed
range is fairly small.
Did anyone ever achieve a snap roll in a Pietenpol ( someone was
bragging
about a Lomchevak once)
(Embedded image moved to file: pic27446.jpg)
.
Hans
"James Dallas"
<BEC176@msn.com>
Sent by:
To
owner-pietenpol-l <pietenpol-list@matronics.com>
ist-server@matron
cc
ics.com
Subject
Re: Pietenpol-List: First
flight..
09/18/2006 01:18
PM
Please respond to
pietenpol-list@ma
tronics.com
Hans, Don't confuse deck angle with angle of attack. It has to do with
the
relative air in which you are moving thru and it doesn't know whether
you
are climbing, descending or strait and level. With the nose pointed
strait
down you can exceed the critical angle of attack and get into a stall.
Go
to an airshow and watch the pros. To do a snap roll in a dive they are
basically entering into a spin and to spin you must first stall.
Jim Dallas
----- Original Message -----
From: Hans Vander Voort
To: pietenpol-list@matronics.com
Sent: Monday, September 18, 2006 11:16 AM
Subject: RE: Pietenpol-List: First flight..
--> Pietenpol-List message posted by: Hans Vander Voort <
hans.vander.voort@alfalaval.com>
The problem is Angle Of Attack, not the steep climb.
With a high AOA you can have a stall well above stall speed.
All this is not very likely with a Pietenpol as the speed range is not
all
that large.
I suggest you make a number of test flights at different climb speeds
and
log the climb rate for each speed.
You are looking for the best climb rate for normal operation.
My Piet best initial climb rate is 750 ft/min at 55 Mph. (achieved on a
cool winter day)
This is measured over one minute beginning when lined up on the runway,
(push stopwatch, push full throttle, count of one minute and log
altitude)
while speed never exceeds 55 Mph.
Do this at 40 Mph and your have a higher AOA (steep attitude) but not a
higher altitude at the end of the minute.
Before you do all this check your stall speed first at safe altitude,
Calibrate your ASI and practice, practice and practice slow speed fleet
first.
Typical stall speed of a Piet is around 30 Mph.
And the above intial climb procedure should not be done below 40 Mph.
If you want to test climb speeds at around 30 Mph than get some
altitude
first!
Be safe!
Hans
Jeff Boatright
<jboatri@emory.ed
u>
To
Sent by: pietenpol-list@matronics.com
owner-pietenpol-l
cc
ist-server@matron
ics.com
Subject
RE: Pietenpol-List: First
flight..
09/18/2006 09:44
AM
Please respond to
pietenpol-list@ma
tronics.com
--> Pietenpol-List message posted by: Jeff Boatright
<jboatri@emory.edu>
If you're well above stall speed, what is the problem with a steep
climb-out?
At 7:17 PM -0400 9/16/06, <harvey.rule@bell.ca> wrote:
>--> Pietenpol-List message posted by: <harvey.rule@bell.ca>
>
>Take off was much better today but according to observers I was still
>doing the ultralight thing by bringing the nose of the plane up too
far
>and taking off at too sharpe an angle.Old habits are hard to correct.I
>thought I did it a lot better.I'll have to improve more on the next
>flight.
--
_____________________________________________________________
Jeffrey H. Boatright, PhD
Associate Professor, Emory Eye Center, Atlanta, GA, USA
Senior Editor, Molecular Vision, http://www.molvis.org/molvis
mailto:jboatri@emory.edu
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Pietenpol-List message posted by: Hans Vander Voort <hans.vander.voort@alfalaval.com>
Harvey,
I believe both methods are correct and legal, but which one to choose
depends on your flight.
If you land on the same field you took off from (local flight) than setting
at zero is OK.
But if you go cross country than calibrating to sea level is no doubt the
easy way to go, as all maps are indicating sea level elevations.
Further, If flying at higher altitudes VFR and IFR flight levels apply and
these are set a sea level.
Hans
<harvey.rule@bell
.ca>
Sent by: To
owner-pietenpol-l <pietenpol-list@matronics.com>
ist-server@matron cc
ics.com
Subject
RE: Pietenpol-List: First flight..
09/18/2006 12:46
PM
Please respond to
pietenpol-list@ma
tronics.com
I noticed that some pilots set their altimeter to zero at the location
their plane is and others will add in the level they are above sea level or
what the book sez the airstrip is above sea level.What is the correct
way?In my own mind,I always figured it was good to zero at the level you
were at and go from there.Thanks for any info you can give on this in
advance.
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Gene &
Tammy
Sent: September 18, 2006 1:36 PM
Subject: Re: Pietenpol-List: First flight..
Gary,
Thank you for making AGL clear. I made an error when I assumed I was
making it clear. It's that kind of mistake that can get someone killed.
Again, thank you
Gene----- Original Message -----
From: Gary Gower
To: pietenpol-list@matronics.com
Sent: Monday, September 18, 2006 12:02 PM
Subject: Re: Pietenpol-List: First flight..
Hello Jeff,
One very important note: The 2,500 ft that Gene is talking about in this
test have to be above ground level, or ASL if you do the test over the
ocean...
3 friends from our club have died from take off stall (in 15 years)...
Is the worse thing to happen... all the friends are watching the pilot
get killed. Very sad, one has to notify the family... Worse. Also
explain to our families and friends that aviation is safe, at every
reunion for years Too much work, Lets all fly safe please.
Saludos
Gary Gower.
Flying from Chapala, Mexico.
Gene & Tammy <zharvey@bellsouth.net> wrote:
--> Pietenpol-List message posted by: "Gene & Tammy"
Jeff,
I'd like to throw my two cents in on the question "what's wrong with a
steep
climb out?".
I come from a back ground of both general avation and two stroke airplanes
and I'm familiar with both. I currently own and fly a Piet (N502R) with a
Continental A 65 and my plane before it was an Avid with a 75 HP 2 stroke.
Plus I've owned and flown a number of others. Loved them all.
The problem with a steep climb out on take off is if your engine quites
you
won't have time to get the nose down into a glide (flying speed) before
you
return to earth. Not good on airframes or human anatomy. I've spent most
of my life in Alaska and it has never stopped amazing me how many Alaskan
pilots manage to kill themselves and others with a steep climb out. One
friend of mine (and a very experienced pilot) took off from his home field
in his Super Cub with his small son and his father-in-law on board. His
wife and mother-in-law were watching from their living room window. Steep
climb out, engine died and so did all three on board (with wife and
mother-in-law still watching.). That next winter another pilot that we had
both known was killed doing the same thing from a frozen lake. He had put
his cub into a steep takeoff climb, showing off to his friends on the
ground. He died because he had neglected to turn on his fuel switch and in
a steep climbout he just didn't have the speed or altitude to keep from
stalling out.
Try this. Go up to about 2500 or higher, put your plane into a steep climb
just above stall speed, note your altitude and turn the engine off. Once
you have your plane back under control and your flying again note your
altitude and restart your engine. It'll make a believer out of you.
The way I look at it, is that I do enough dumb things while flying that I
don't need to do the dumb things that I know will get me killed.
Gene
riginal Message -----
From: "Jeff Boatright"
To:
Sent: Monday, September 18, 2006 9:44 AM
Subject: RE: Pietenpol-List: First flight..
> --> Pietenpol-List message posted by: Jeff Boatright
>
> If you're well above stall speed, what is the problem with a steep
> climb-out?
>
>
>
> At 7:17 PM -0400 9/16/06, wrote:
>>--> Pietenpol-List message posted by:
>>
>>Take off was much better today but according to observers I was still
>>doing the ultralight thing by bringing the nose of the plane up too far
>>and taking off at too sharpe an angle.Old habits are hard to correct.I
>>thought I did it a lot better.I'll have to improve more on the next
>>flight.
>
> --
>
> _____________________________________________________________
> Jeffrey H. Boatright, PhD
> Associate Professor, Emory Eye Center, Atlanta, GA, USA
> Senior Editor, Molecular Vision, http://www.molvis.org/molvis
> mailto:jboatri@emory.edu
>
ronics.com/Navigator?Pietenpol-List
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Pietenpol-List message posted by: "Robert Gow" <rgow@avionicsdesign.ca>
What about a clipped-wing Piet with 180 hp?
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com]On Behalf Of
harvey.rule@bell.ca
Sent: September 18, 2006 3:11 PM
Subject: RE: Pietenpol-List: First flight..
--> Pietenpol-List message posted by: <harvey.rule@bell.ca>
Jeeeeeze I can't imagine anyone even wanting to try a snap Role in a
Piet.
Do not archive
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Hans
Vander Voort
Sent: September 18, 2006 3:04 PM
Subject: Re: Pietenpol-List: First flight..
Jim,
I am not, but perhaps I was not entirely clear.
I was merely trying to make the point that paying attention to safe air
speed is more important than the steep climb.
I frequently take off in to a 10 Mph head wind ( this is 10 at ground
level)
At 500 feet this head wind can gradually increase to 20 Mph.
Seen from the ground your have now a very steep climb ( your forward,
ground speed is very slow)
Yet, your AOA is less than stall angle.
I do not believe you can get a high speed stall in Pietenpol, the speed
range is fairly small.
Did anyone ever achieve a snap roll in a Pietenpol ( someone was
bragging
about a Lomchevak once)
(Embedded image moved to file: pic27446.jpg)
.
Hans
"James Dallas"
<BEC176@msn.com>
Sent by:
To
owner-pietenpol-l <pietenpol-list@matronics.com>
ist-server@matron
cc
ics.com
Subject
Re: Pietenpol-List: First
flight..
09/18/2006 01:18
PM
Please respond to
pietenpol-list@ma
tronics.com
Hans, Don't confuse deck angle with angle of attack. It has to do with
the
relative air in which you are moving thru and it doesn't know whether
you
are climbing, descending or strait and level. With the nose pointed
strait
down you can exceed the critical angle of attack and get into a stall.
Go
to an airshow and watch the pros. To do a snap roll in a dive they are
basically entering into a spin and to spin you must first stall.
Jim Dallas
----- Original Message -----
From: Hans Vander Voort
To: pietenpol-list@matronics.com
Sent: Monday, September 18, 2006 11:16 AM
Subject: RE: Pietenpol-List: First flight..
--> Pietenpol-List message posted by: Hans Vander Voort <
hans.vander.voort@alfalaval.com>
The problem is Angle Of Attack, not the steep climb.
With a high AOA you can have a stall well above stall speed.
All this is not very likely with a Pietenpol as the speed range is not
all
that large.
I suggest you make a number of test flights at different climb speeds
and
log the climb rate for each speed.
You are looking for the best climb rate for normal operation.
My Piet best initial climb rate is 750 ft/min at 55 Mph. (achieved on a
cool winter day)
This is measured over one minute beginning when lined up on the runway,
(push stopwatch, push full throttle, count of one minute and log
altitude)
while speed never exceeds 55 Mph.
Do this at 40 Mph and your have a higher AOA (steep attitude) but not a
higher altitude at the end of the minute.
Before you do all this check your stall speed first at safe altitude,
Calibrate your ASI and practice, practice and practice slow speed fleet
first.
Typical stall speed of a Piet is around 30 Mph.
And the above intial climb procedure should not be done below 40 Mph.
If you want to test climb speeds at around 30 Mph than get some
altitude
first!
Be safe!
Hans
Jeff Boatright
<jboatri@emory.ed
u>
To
Sent by: pietenpol-list@matronics.com
owner-pietenpol-l
cc
ist-server@matron
ics.com
Subject
RE: Pietenpol-List: First
flight..
09/18/2006 09:44
AM
Please respond to
pietenpol-list@ma
tronics.com
--> Pietenpol-List message posted by: Jeff Boatright
<jboatri@emory.edu>
If you're well above stall speed, what is the problem with a steep
climb-out?
At 7:17 PM -0400 9/16/06, <harvey.rule@bell.ca> wrote:
>--> Pietenpol-List message posted by: <harvey.rule@bell.ca>
>
>Take off was much better today but according to observers I was still
>doing the ultralight thing by bringing the nose of the plane up too
far
>and taking off at too sharpe an angle.Old habits are hard to correct.I
>thought I did it a lot better.I'll have to improve more on the next
>flight.
--
_____________________________________________________________
Jeffrey H. Boatright, PhD
Associate Professor, Emory Eye Center, Atlanta, GA, USA
Senior Editor, Molecular Vision, http://www.molvis.org/molvis
mailto:jboatri@emory.edu
Message 15
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: First flight.. |
Harvey,
I did my Private Pilot Licence on a 65 hp Aeronca Champion many years
ago at Calgary, Alberta. The field elevation there is 3500 feet asl, and
we were taught to hold the nose down after liftoff until a climbing
speed of 65 mph was achieved. Then, and only then, were we allowed to
raise the nose for the climb, while maintaining 65 mph.
Sometimes, without warning, the instructor would pull off the power and
we had to immediately lower the nose to maintain the gliding/climbing
speed of 65 mph. All gliding and climbing turns were made at 70 mph and
he was very strict in this regard. 56 years later, I am still
around---likely because of what I was taught then (plus some luck).
These procedures ensured that we never got close to the stalling angle
of attack of the Champ wing, and provided control inputs were
well-coordinated, we were pretty safe. Since my Pietenpol is
more-or-less in the same class as the old Aeronca 7AC, I have always
used these numbers for it, keeping in mind the Pietenpol is lighter and
draggier than the Champ.
In the event of an engine failure with the Pietenpol, one must react
immediately by very aggressively lowering the nose to maintain airspeed.
If airspeed is lost during climbout when you have little altitude
available, you could be in big trouble. With a Pietenpol, it takes a lot
of altitude to recover lost airspeed. Try it sometime at a safe altitude
once you have become more familiar with your bird. With my 85 hp
Pietenpol I like to climb out at 70 mph, considering the extra airspeed
to be "trading material" in an emergency. The rate of climb isn't
reduced very much by climbing out at 70. Once I am above 500 feet agl, I
typically climb at 65.
Essentially I am saying that one should fly carefully when near the
ground---especially with a draggy airplane. Your airfield near Ottawa is
only slightly above sea level, and that helps. My airfield is at 2500'
asl and I must be very careful---particularly with a load.
Regarding your question about setting the altimeter, I always set it at
the field elevation before takeoff. Aerobatic pilots, I have been told,
set it at zero in order to get a direct ground clearance reading without
having to do mental computations; they are too busy for that sort of
thing.
Graham (Pietenpol CF-AUN)
Message 16
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: props on corvair motors |
Follow up on prop pitch:
I called William Wynne today because when I had him order my prop for my
Pietenpol, he recommended a 64 x 33 prop.
So, today I called him to tell him they shipped me a prop with a 52 in.
pitch.
After he seemed to recover from a near fatal cardiac arrest, he
mentioned someone was supposed to get a 54 x 52 prop for his small high
performance plane. Now William is thinking Sensenich somehow screwed up
and probably made this guy a 54 x 33 prop.
William said he'd talk to Sensenich and get this all ironed out, then
call me back. Haven't heard from him yet. Maybe he DID succumb to a
cardiac arrest??
Anyway a 64 x 52 prop is NOT a good idea for a Piet.
Stay tuned for continued coverage of the Sensenich Saga.
----- Original Message -----
From: Roman Bukolt
To: pietenpol-list@matronics.com
Sent: Sunday, September 17, 2006 10:07 PM
Subject: Re: Pietenpol-List: props on corvair motors
Hi!
I just received my prop yesterday which I purchased through William
Wynne.
At his request, I sent him a check for $700 in May. He, then, ordered
the prop from Sensenich.
It's a beautiful piece of woodwork with somewhat of a scimitar shape.
Diameter is 64 " and the pitch is 52 ".
----- Original Message -----
From: TGSTONE236@aol.com
To: pietenpol-list@matronics.com
Sent: Sunday, September 17, 2006 2:19 PM
Subject: Pietenpol-List: props on corvair motors
I am curious as to the props used on Corvair engines on the
Pietenpol. The composite props do not look right on the 70 + year old
design. what length and pitch are most of you using and what Prop
company manufactured it or did you make your own?
Ted Stone
I have quite aways to go before I need a prop.
ronics.com/Navigator?Pietenpol-List
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|