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1. 01:19 PM - Re: Warpdrive ! Scotty! (Sacha)
2. 11:14 PM - Re: Warpdrive ! Scotty! (Stan Specht)
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| Subject: | Warpdrive ! Scotty! |
Lowell,
Thanks for the detailed info!
I=99m also leaning towards a 3-blade 68=9D. I know this is
very different from a wooden fixed pitch prop, but I=99m wondering
whether I should spend the extra money and get an in-flight adjustable
pitch since I plan to be doing some cruising around with the plane once
I get comfortable with it. If anyone has any insight/experience there,
I=99d appreciate hearing it.
Sacha
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Lowell Fitt
Sent: Saturday, 02 March, 2013 16:20
Subject: Re: Kitfox-List: Warpdrive ! Scotty!
Sacha,
Most of my numbers are very preliminary. And after flying the actual
test phases, it was mostly to put the required 40 hours on it and I
throttled back because distance was not as important as time and I
didn't want to burn more gas than was necessary. So numbers are not
finalized.
I was getting about 100 mph at 5000 RPM. During the test phase in
probably 85-90 degree days, climb was very close to 1000 fpm. The 1300
I mentioned was at a temp in the high 50s to low 60s. As I do the
longer cross country flights fuel burn will be more apparent. I chose
the 68" prop because that is what was recommended by the guys I knew
that have been running the Warp prop.
One issue I did have with the Warp Prop is that one blade would change
pitch one degree after running for a short while. I would re-pitch it
and it would change the one degree again. I contacted Warp and this is
there explanation. The aluminum collar is placed in the mold and the
resin and fabric are the inserted and cured under pressure.
Occasionally the resin will shrink away from the aluminum collar. He
explained that is the reason for the holes drilled through the collar at
180=C2=B0. The resin is supposed to run into the holes and act as a
pinning mechanism. Apparently this was not working on my prop and he
suggested I pin with aluminum pins.
I drilled two 3/16" holes through the collar and into the hub about 3/8"
deep. and about an inch from the hub end. I cut two pins of 3/16"
aluminum and glued them in the holes with a structural adhesive. I
have to say here that this is what I did as I forgot to ask him for the
factory recommended procedure. If anyone else is having this problem, I
would suggest calling for the exact recommendations.
Lowell
From: Sacha <mailto:uuccio@gmail.com>
Sent: Friday, March 01, 2013 10:41 PM
Subject: Re: Kitfox-List: Warpdrive ! Scotty!
That's great info... Lowell/All, what kind of cruise characteristics
(speed, rpm, fuel consumption) do you get out of it?
I am actually looking for a prop for a Kitfox IV - 80hp. Thinking Warp
or Ivoprop or a wooden one by a local maker. I'd also consider a second
hand one if anyone has one they want to sell?
Sacha
On Mar 2, 2013, at 4:45, "Lowell Fitt" <lcfitt@sbcglobal.net> wrote:
Toodie and bob,
My Model IV - 80 HP with 68" Warp prop is pitched at 23=C2=B0. My climb
RPM is not as great as Rick's - 5200 but and I am still fairly early in
the flying on this airplane - 45 hours. Things may change, but I often
see 1300 fpm climb and cruise is pretty good.
Lowell
From: Richard Weiss <mailto:MDKitfox@aol.com>
Sent: Friday, March 01, 2013 6:48 PM
Subject: Re: Kitfox-List: Warpdrive ! Scotty!
Toodie and Bob,
I have my Warp Drive prop set for 17 degrees. It seems the engine/plane
combination is 'comfortable' at the pitch setting. It's very smooth and
I get about 5600--5700 RPM on take off, although takeoff is so quick I
barely have time to look at the tach.
Rick Weiss
Series V (Skystar s/n 1) Speedster:-)
Rotax 912S, Dynon Sky View
Spruce Creek Fly In, FL
MDKitfox@aol.com
On Mar 1, 2013, at 6:52 PM, rtmarshall wrote:
Hello Kitfox flyers out in the hinterland, I am sure there is a segment
of the group that use's the 70" warpdrive prop on their 80HP KF. As a
starting point for pitch what seems to be the # ? I am thinking
around 21* pitch, might be too much " what does the group think? Thanks
much for your input and thoughts on the subject. Blue Skies.
Toodie & Bob Marshall
Beckwourth, CA
KF/4/1200 flying
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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| Subject: | Re: Warpdrive ! Scotty! |
Sacha-
I fly a Speedster Model IV with an 80 hp. 912 . For the past 1500 hours+ (
1947 hrs. TT) I have used a 70" IVO cabin-adjustable prop. I wouldn't fly b
ehind anything else, even though it takes a bit of maintenance once and awh
ile. I cruise around 52-5300 rpm at 115 mph, burn under 4 gph and can get 1
20 mph if I goose it up to about 4 gph. My climb out, even here in the Mile
High City, is real positive. I wouldn't be able to get this performance wi
thout this prop. Also, I fly a lot of cross country and really like this pr
op for this purpose.
Stan Specht
Denver, Colorado
-----Original Message-----
From: Sacha <uuccio@gmail.com>
Sent: Sun, Mar 3, 2013 2:19 pm
Subject: RE: Kitfox-List: Warpdrive ! Scotty!
Lowell,
Thanks for the detailed info!
I=99m also leaning towards a 3-blade 68=9D. I know this is ver
y different from a wooden fixed pitch prop, but I=99m wondering wheth
er I should spend the extra money and get an in-flight adjustable pitch sin
ce I plan to be doing some cruising around with the plane once I get comfor
table with it. If anyone has any insight/experience there, I=99d app
reciate hearing it.
Sacha
From: owner-kitfox-list-server@matronics.com [mailto:owner-kitfox-list-serv
er@matronics.com] On Behalf Of Lowell Fitt
Sent: Saturday, 02 March, 2013 16:20
Subject: Re: Kitfox-List: Warpdrive ! Scotty!
Sacha,
Most of my numbers are very preliminary. And after flying the actual test p
hases, it was mostly to put the required 40 hours on it and I throttled bac
k because distance was not as important as time and I didn't want to burn
more gas than was necessary. So numbers are not finalized.
I was getting about 100 mph at 5000 RPM. During the test phase in probably
85-90 degree days, climb was very close to 1000 fpm. The 1300 I mentioned
was at a temp in the high 50s to low 60s. As I do the longer cross count
ry flights fuel burn will be more apparent. I chose the 68" prop because t
hat is what was recommended by the guys I knew that have been running the W
arp prop.
One issue I did have with the Warp Prop is that one blade would change pitc
h one degree after running for a short while. I would re-pitch it and it
would change the one degree again. I contacted Warp and this is there expl
anation. The aluminum collar is placed in the mold and the resin and fabri
c are the inserted and cured under pressure. Occasionally the resin will
shrink away from the aluminum collar. He explained that is the reason for
the holes drilled through the collar at 180=C2=B0. The resin is supposed t
o run into the holes and act as a pinning mechanism. Apparently this was n
ot working on my prop and he suggested I pin with aluminum pins.
I drilled two 3/16" holes through the collar and into the hub about 3/8" de
ep. and about an inch from the hub end. I cut two pins of 3/16" aluminum
and glued them in the holes with a structural adhesive. I have to say her
e that this is what I did as I forgot to ask him for the factory recommende
d procedure. If anyone else is having this problem, I would suggest callin
g for the exact recommendations.
Lowell
From: Sacha
Sent: Friday, March 01, 2013 10:41 PM
Subject: Re: Kitfox-List: Warpdrive ! Scotty!
That's great info... Lowell/All, what kind of cruise characteristics (speed
, rpm, fuel consumption) do you get out of it?
I am actually looking for a prop for a Kitfox IV - 80hp. Thinking Warp or I
voprop or a wooden one by a local maker. I'd also consider a second hand o
ne if anyone has one they want to sell?
Sacha
On Mar 2, 2013, at 4:45, "Lowell Fitt" <lcfitt@sbcglobal.net> wrote:
Toodie and bob,
My Model IV - 80 HP with 68" Warp prop is pitched at 23=C2=B0. My climb RP
M is not as great as Rick's - 5200 but and I am still fairly early in the f
lying on this airplane - 45 hours. Things may change, but I often see 1300
fpm climb and cruise is pretty good.
Lowell
From: Richard Weiss
Sent: Friday, March 01, 2013 6:48 PM
Subject: Re: Kitfox-List: Warpdrive ! Scotty!
Toodie and Bob,
I have my Warp Drive prop set for 17 degrees. It seems the engine/plane co
mbination is 'comfortable' at the pitch setting. It's very smooth and I ge
t about 5600--5700 RPM on take off, although takeoff is so quick I barely h
ave time to look at the tach.
Rick Weiss
Series V (Skystar s/n 1) Speedster:-)
Rotax 912S, Dynon Sky View
Spruce Creek Fly In, FL
MDKitfox@aol.com
On Mar 1, 2013, at 6:52 PM, rtmarshall wrote:
Hello Kitfox flyers out in the hinterland, I am sure there is a segment of
the group that use's the 70" warpdrive prop on their 80HP KF. As a starti
ng point for pitch what seems to be the # ? I am thinking around 21* pit
ch, might be too much " what does the group think? Thanks much for your inp
ut and thoughts on the subject. Blue Skies.
Toodie & Bob Marshall
Beckwourth, CA
KF/4/1200 flying
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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