Today's Message Index:
----------------------
1. 04:29 AM - Re: Lift Reserve Indicator (Thom Riddle)
2. 07:42 AM - Lift Reserve Indicator (Richard Girard)
3. 08:08 AM - Re: Lift Reserve Indicator (Dennis Rowe)
4. 01:32 PM - Firestar II stall speed... (Arizona Flyer)
5. 02:13 PM - Re: Firestar II stall speed... (Dennis Rowe)
6. 02:22 PM - Re: Firestar II stall speed... (David Kulp)
7. 04:22 PM - Finally (Rex Rodebush)
8. 04:41 PM - Re: Finally (kinne russ)
9. 04:42 PM - Re: Finally (Larlaeb)
10. 04:53 PM - Re: landing gear alignment (Rick Lewis)
11. 04:58 PM - Re: Firestar II stall speed... (t41pilot)
12. 05:04 PM - Re: Re: landing gear alignment (kinne russ)
13. 06:17 PM - Re: Finally (Dennis Rowe)
14. 06:32 PM - Re: Finally (Malcolm Brubaker)
15. 06:59 PM - Re: Finally (Brian and Karon Frey)
16. 07:23 PM - New Purchase of Used Xtra (Brad Nation)
17. 08:34 PM - Re: Firestar II stall speed... (wakataka)
Message 1
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| Subject: | Re: Lift Reserve Indicator |
Calculating the change in stall speed based on change in weight is pretty easy.
The stall speed changes with the square root of the change in flying weight,
all other things being equal.
Example:
Typical flying weight solo 900 lbs., stall speed 40
Add a 200 lb passenger, flying weight becomes 1100 lbs
1100/900 = 1.22
sqrt(1.22) = 1.11 therefore stall speed at 1100 lbs = 44.4
So, for these class of airplanes, adding 5 to indicated speed during approach when
carrying a passenger, an often heard bit of advice, is about right.
--------
Thom Riddle
Buffalo, NY (9G0)
Don't worry about old age... it doesn't last very long.
- Anonymous
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=400188#400188
Message 2
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| Subject: | Lift Reserve Indicator |
I sent the article to start a discussion since the Kolb list has been
pretty quiet these days and it achieved that goal.
In defense of the idea, where is that most stall/spin accidents occur? At
low speeds while approaching or departing an airport. Jim's indicator, as
you can see from the picture, is located at the top of his panel where it
can attract attention during that critical phase when the pilot's eyes
should be outside the cockpit looking for traffic.
We've lost one list member to a landing stall/spin on his very first flight
in his newly completed IIIX. Would an LRI helped? No way to know, but angle
of attack gauges are the latest rage to combat the stall/spin accident and
Jim came up with a homebuilder's solution that's inexpensive and
uncomplicated.
Rick Girard
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
Message 3
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| Subject: | Re: Lift Reserve Indicator |
I read below that we lost a member in a stall spin accident, I've been off l
ist for quite a while and had missed this. I'm saddened to hear, but have to
ask who it was?
Skid Rowe
Mk 3 2si 690, PA
Do not archive
On May 9, 2013, at 10:41 AM, Richard Girard <aslsa.rng@gmail.com> wrote:
> I sent the article to start a discussion since the Kolb list has been pret
ty quiet these days and it achieved that goal.
> In defense of the idea, where is that most stall/spin accidents occur? At l
ow speeds while approaching or departing an airport. Jim's indicator, as you
can see from the picture, is located at the top of his panel where it can a
ttract attention during that critical phase when the pilot's eyes should be o
utside the cockpit looking for traffic.
> We've lost one list member to a landing stall/spin on his very first fligh
t in his newly completed IIIX. Would an LRI helped? No way to know, but angl
e of attack gauges are the latest rage to combat the stall/spin accident and
Jim came up with a homebuilder's solution that's inexpensive and uncomplica
ted.
>
> Rick Girard
>
> --
> Zulu Delta
> Mk IIIC
> Thanks, Homer GBYM
>
> It isn't necessary to have relatives in Kansas City in order to be unhappy
.
> - Groucho Marx
>
>
>
==========================
=========
==========================
=========
==========================
=========
==========================
=========
>
Message 4
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| Subject: | Firestar II stall speed... |
I bought a pre owned Firestar II and all my research indicated a 30mph stall speed.
I was shocked on my first landing at my short airstrip when it dropped from
about 4ft. and bounced hard yikes! No damage but I approached at 42mph and
backed it off just before the runway threshold, a quick glance showed 36mph right
before it stalled which would be 35mph. My Firestar log book list the weight
at 419 lbs. I am so fortunate I was not higher when this happened. This makes
me concerned for other new Firestar pilots who may also experience this somewhat
dangerous surprise with a 30mph stall speed in mind. I would have never
tried to slow it down so much on a longer runway but I had to for the short strip.
On the next 3 landings I kept 42mph approach and 40mph at threshold and held
that speed until my wheels were 1ft or 2ft above the ground then cut power
and did well then. Is 419 lbs heavy or around normal for this airplane? Is 35mph
stall speed common? I've spent a few days extending my runway to accommodate
for a 5 mph faster Firestar than I expected. I have learned a lot from the
fine folks on this forum. I just joined to make my first post. I will do my best
to be a valuable contributor here. Thanks for any replies :)
--------
"Life should be lived as a bold adventure, I refuse to tiptoe through life
just to arrive safely at death"
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=400204#400204
Message 5
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| Subject: | Re: Firestar II stall speed... |
Welcome,
You have an experimental bird with an uncertified pitot static system. Test fly
at the largest field available, practice stalls at altitude to learn the indicated
airspeed at stall and as with all high drag, low weight aircraft fly it
down to a foot high before you flare.
Dennis Skid Rowe
Mk3, PA
On May 9, 2013, at 4:32 PM, "Arizona Flyer" <heracesthesun@yahoo.com> wrote:
>
> I bought a pre owned Firestar II and all my research indicated a 30mph stall
speed. I was shocked on my first landing at my short airstrip when it dropped
from about 4ft. and bounced hard yikes! No damage but I approached at 42mph and
backed it off just before the runway threshold, a quick glance showed 36mph
right before it stalled which would be 35mph. My Firestar log book list the weight
at 419 lbs. I am so fortunate I was not higher when this happened. This makes
me concerned for other new Firestar pilots who may also experience this somewhat
dangerous surprise with a 30mph stall speed in mind. I would have never
tried to slow it down so much on a longer runway but I had to for the short
strip. On the next 3 landings I kept 42mph approach and 40mph at threshold and
held that speed until my wheels were 1ft or 2ft above the ground then cut power
and did well then. Is 419 lbs heavy or around normal for this airplane? Is
35mph stall speed common? I've spent a few days extend!
> ing my runway to accommodate for a 5 mph faster Firestar than I expected. I have
learned a lot from the fine folks on this forum. I just joined to make my
first post. I will do my best to be a valuable contributor here. Thanks for any
replies :)
>
> --------
> "Life should be lived as a bold adventure, I refuse to tiptoe through life
just to arrive safely at death"
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=400204#400204
>
>
>
>
>
>
>
>
>
>
Message 6
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| Subject: | Re: Firestar II stall speed... |
Also, something my flight instructor taught me taking GA lessons; if you
stall too high above the runway, goose the throttle as soon as you feel
it break and you'll touch down a lot gentler. Happened again a few
hours later concentrating too hard on gusty cross winds, and it works!!
Dave Kulp
Bethlehem, PA
FireFly 11DMK
On 5/9/2013 5:13 PM, Dennis Rowe wrote:
>
> Welcome,
> You have an experimental bird with an uncertified pitot static system. Test fly
at the largest field available, practice stalls at altitude to learn the indicated
airspeed at stall and as with all high drag, low weight aircraft fly it
down to a foot high before you flare.
>
> Dennis Skid Rowe
> Mk3, PA
>
> On May 9, 2013, at 4:32 PM, "Arizona Flyer" <heracesthesun@yahoo.com> wrote:
>
>>
>> I bought a pre owned Firestar II and all my research indicated a 30mph stall
speed. I was shocked on my first landing at my short airstrip when it dropped
from about 4ft. and bounced hard yikes! No damage but I approached at 42mph and
backed it off just before the runway threshold, a quick glance showed 36mph
right before it stalled which would be 35mph. My Firestar log book list the weight
at 419 lbs. I am so fortunate I was not higher when this happened. This
makes me concerned for other new Firestar pilots who may also experience this
somewhat dangerous surprise with a 30mph stall speed in mind. I would have never
tried to slow it down so much on a longer runway but I had to for the short
strip. On the next 3 landings I kept 42mph approach and 40mph at threshold and
held that speed until my wheels were 1ft or 2ft above the ground then cut power
and did well then. Is 419 lbs heavy or around normal for this airplane? Is
35mph stall speed common? I've spent a few days exte!
> nd!
>> ing my runway to accommodate for a 5 mph faster Firestar than I expected. I
have learned a lot from the fine folks on this forum. I just joined to make my
first post. I will do my best to be a valuable contributor here. Thanks for any
replies :)
>>
>> --------
>> "Life should be lived as a bold adventure, I refuse to tiptoe through life
just to arrive safely at death"
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=400204#400204
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
Message 7
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Finally received my Airworthiness Certificate today after about 13+ years of on
and off building!
Rex Rodebush
Mark III X-tra with 912S
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=400217#400217
Message 8
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Rex:
Where are you located?
Russ K
On May 9, 2013, at 7:22 PM, Rex Rodebush wrote:
>
> Finally received my Airworthiness Certificate today after about 13+ years of
on and off building!
>
> Rex Rodebush
> Mark III X-tra with 912S
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=400217#400217
>
>
>
>
>
>
>
>
>
>
Message 9
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Way to go! :D
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=400218#400218
Message 10
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| Subject: | Re: landing gear alignment |
It would have been so nice, Russ, for you to have been honest with me about having
no intension of buying my plane. This would have saved me a lot of work getting
things ready for you to look at.........
--------
Rick Lewis
(VW Watercooled Engine)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=400221#400221
Message 11
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| Subject: | Re: Firestar II stall speed... |
I also had the same "Surprise" with my Firefly on the first couple of landings.
The approach looks good and then Bango. My firefly puts on the brakes as soon
as power is removed, so now I carry some rpm all the way to flare and then back
it off for touchdown. I do my approaches between 45 and 50 with no flap. I
know Kolbs can land short. It's just a matter of power management and flap. I'm
still doing the no flap approach because my landings are better at the quicker
speed. But with more experience I know I can land shorter. As far as Airspeed
calibration, I compared my indicated airspeed to my GPS ground speed on a
calm day and they were within 1 mph. I use a dual static port setup. One on each
side of my nosecone. I made homemade ones by drilling out 1/4 inch Nylon bolts
through the centers lengthwise and holding them in place with nylon nuts.
Head of the bolt outside and the nuts inside with some thread to spare for air
tubing hookup. Then I just slipped the static air tubing over the ends and
clamped in place. The tubing fit tightly over the threads as it was but clamps
make good insurance. The cost is next to nothing. If you find an airspeed problem,
check the incidence of the pitot tube. If your indicated airspeed is Ok
then you are in the same boat as me. Just practice...practice...practice with
a little sight seeing in between.
--------
Gregg Kaat
2011 Firefly
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=400223#400223
Message 12
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| Subject: | Re: landing gear alignment |
I am hurt by your comments! -- I DID have intentions of buying your plane, and
am an honest man.
I wouldn't do that to you, or anyone else.
I'm not that kind of person.
Russ K
On May 9, 2013, at 7:53 PM, Rick Lewis wrote:
>
> It would have been so nice, Russ, for you to have been honest with me about having
no intension of buying my plane. This would have saved me a lot of work
getting things ready for you to look at.........
>
> --------
> Rick Lewis
>
> (VW Watercooled Engine)
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=400221#400221
>
>
>
>
>
>
>
>
>
>
Message 13
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Big Congrats!!!!!!
Do not archive
Skid Rowe
On May 9, 2013, at 7:22 PM, "Rex Rodebush" <jrrodebush@gmail.com> wrote:
>
> Finally received my Airworthiness Certificate today after about 13+ years of
on and off building!
>
> Rex Rodebush
> Mark III X-tra with 912S
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=400217#400217
>
>
>
>
>
>
>
>
>
>
Message 14
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=0A=0A=0AMalcolm & Jeanne Brubaker =0AMichigan Sport Pilot Repair =0Ahttp:
//michigansportpilotrepair.com/ =0ALSRM-A, PPC, WS=0AGreat Sails - Sailmake
r =0Afor Ultralight & Light Sport=0A(989)513-3022 =0A- =0A=0A=0A=0A =0A
=0A________________________________=0A From: Rex Rodebush <jrrodebush@gmail
.com>=0ATo: kolb-list@matronics.com =0ASent: Thursday, May 9, 2013 7:22 PM
Rex Rodebush" <jrrodebush@gmail.com>=0A=0AFinally received my Airworthiness
Certificate today after about 13+ years of on and off building!=0A=0ARex R
odebush=0AMark III X-tra- with 912S=0A=0A=0A=0A=0ARead this topic online
here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=400217#400217=0A
=========================0A
===================
Message 15
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Congrats Rex
Brian Frey
----- Original Message -----
From: "Rex Rodebush" <jrrodebush@gmail.com>
Sent: Thursday, May 09, 2013 6:22 PM
Subject: Kolb-List: Finally
>
> Finally received my Airworthiness Certificate today after about 13+ years
> of on and off building!
>
> Rex Rodebush
> Mark III X-tra with 912S
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=400217#400217
>
>
>
Message 16
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| Subject: | New Purchase of Used Xtra |
I will be purchasing a used Xtra with a 912 100hp Rotax shortly as this will be
my first airplane purchase this will be unfamiliar territory. Any pointers and
suggestions on the buying process and evaluating the airplane would be appreciated.
Are there any specifics related to the Kolb/Kolb Xtra or Rotax that I
should be looking for?
I'm so excited!
Once again, thanks in advance,
Brad
Message 17
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| Subject: | Re: Firestar II stall speed... |
I had the same experience on the first few landings with my Firestar 1. If you
bring it in slow, it will just quit flying all at once about the time you expect
it to begin to settle. So far, I've found that wheel landings work better the
stall landings. That way you can bring it in a little hot and avoid that sinking
feeling when it quits flying before you're ready. That doesn't work so well
on short fields, though.
I've only got about 30 hours in the Firestar so I'm sure there's things I've yet
to learn about it, but so far it seems like a very honest little airplane with
only a few minor quirks.
--------
There is something fascinating about science. One gets such wholesale returns of
conjecture out of such a trifling investment of fact.
Mark Twain
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=400237#400237
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