Today's Message Index:
----------------------
1. 04:47 AM - Re: fuel cap faring (fox5flyer)
2. 05:20 AM - Re: Sprung Tailwheel (Catz631@aol.com)
3. 05:38 AM - Re: Sprung Tailwheel (Lynn Matteson)
4. 07:40 AM - Re: fuel cap faring (n85ae)
5. 07:41 AM - Re: Sprung Tailwheel (patrick reilly)
6. 08:00 AM - Re: Re: Kitfox-List Digest: 33 Msgs - 03/10/08 (DeWayne Clifford)
7. 08:09 AM - Re: Re: fuel cap faring (patrick reilly)
8. 08:26 AM - fuel cap faring (fox5flyer)
9. 09:12 AM - Re: fuel cap faring (84KF)
10. 09:25 AM - Re: Sprung Tailwheel (Michel Verheughe)
11. 09:44 AM - Re: fuel cap faring (n85ae)
12. 09:45 AM - Re: Re: Kitfox-List Digest: 33 Msgs - 03/10/08 (Marco Menezes)
13. 09:50 AM - Re: fuel cap faring (n85ae)
14. 10:38 AM - Re: Sprung Tailwheel (Chris Budd)
15. 11:08 AM - Re: Re: fuel cap faring (JC Propeller Design)
16. 11:16 AM - Re: Sprung Tailwheel (Lynn Matteson)
17. 11:23 AM - Sprung Tailwheel (fox5flyer)
18. 11:33 AM - Re: fuel cap faring (fox5flyer)
19. 11:40 AM - Re: fuel cap faring (fox5flyer)
20. 11:58 AM - Re: fuel cap faring (n85ae)
21. 12:50 PM - Re: Sprung Tailwheel (patrick reilly)
22. 12:58 PM - Re: Sprung Tailwheel (Clint Bazzill)
23. 01:00 PM - Re: fuel cap faring (patrick reilly)
24. 01:32 PM - RE : Sprung tail wheel (Jacques Voynaud)
25. 02:24 PM - Re: RE : Sprung tail wheel (patrick reilly)
26. 02:43 PM - Re: fuel cap faring (fox5flyer)
27. 02:46 PM - Re: RE : Sprung tail wheel (fox5flyer)
28. 02:55 PM - Rotax 912 80HP Idle RPM (SkySteve)
29. 03:57 PM - Re: Rotax 912 80HP Idle RPM (kerrjohna@comcast.net)
30. 04:19 PM - Re: Rotax 912 80HP Idle RPM (SkySteve)
31. 07:14 PM - Re: Rotax 912 80HP Idle RPM (James Shumaker)
32. 07:53 PM - Re: Rotax 912 80HP Idle RPM (SkySteve)
33. 07:54 PM - Re: Rotax 912 80HP Idle RPM (Sbennett3@aol.com)
34. 08:43 PM - Lord mount "pre-compression" (wadegreaves)
Message 1
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| Subject: | Re: fuel cap faring |
I made my own. It was fairly simple. Just used 3/4" blue foam carved to
shape, sanded, covered with a thin layer of glass/epoxy, paint to match,
then epoxied to the wing. Photos attached. Sorry about the photo quality.
They were taken a long time ago when digital cams were infantile.
Deke Morisse
Mikado Michigan
S5/Subaru/CAP 355+ TT
"The aim of an argument or discussion should not be victory, but progress."
- Joseph Joubert
----- Original Message -----
From: "kirk hull" <kirkhull@kc.rr.com>
Sent: Tuesday, March 11, 2008 9:37 PM
Subject: Kitfox-List: fuel cap faring
>
> When I was at osh last year I saw a # of kitfoxes with some faring behind
> the fuel caps. Does anybody know where to find these and how much they
> cost? If anybody has these installed was there any noticeable effects?
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| Subject: | Re: Sprung Tailwheel |
I too had the aluminum tailspring but found it too rough for my grass runway
(and all the breakage reports) so I sold it on EBAY and installed the 3 leaf
spring ,removed the Maule tailwheel, and installed a Matco tailwheel.The weight
difference for the combination was less than 1/2 pound. I now have a flexable
tailwheel that rides much better on grass and pavement!
Dick Maddux
Fox 4-1200
Pensacola,Fl
**************It's Tax Time! Get tips, forms, and advice on AOL Money &
Finance. (http://money.aol.com/tax?NCID=aolprf00030000000001)
Message 3
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| Subject: | Re: Sprung Tailwheel |
It's soft rubber, Jim. And you might be right about the bearings,
although when armed with the dimensions that I had, the local bearing
distributor could only supply ones with a 5/8" inner diameter. It
seems like others have found bearing that worked without the sleeve.
Just for the record, that bearing distributor that I visited has gone
belly up, but that's not surprising in Michigan.
Lynn Matteson
Grass Lake, Michigan
Kitfox IV Speedster w/Jabiru 2200
flying w/475+ hrs
On Mar 12, 2008, at 12:06 AM, Jim_and_Lucy Chuk wrote:
> Lynn, Is that tailwheel soft rubber or actually a pneumatic
> wheel? As far as the bearings go, I would bet that it wouldn't be
> to hard to find bearings that fit the wheel and have a 1/2" center
> so it would fit the Maule axle. Thanks, Jim Chuk Avids MN
>
> > From: lynnmatt@jps.net
> > Subject: Re: Kitfox-List: Sprung Tailwheel
> > Date: Tue, 11 Mar 2008 22:54:21 -0400
> > To: kitfox-list@matronics.com
> >
> >
> > That's the one. Yes, get the longlife bearings from them or from a
> > local bearing dealer, as the one's shipped with the wheel are poor
> > quality...A word of warning....the description says "bearings" but
> > that means one bearing, and you will need to order two, unless
> > they've changed their tune since I ordered mine. You'll have to make
> > a sleeve for the bearings to fit the Maule axle. I used a length of
> > 4130 tubing, Spruce part number 03-03900, which will have to be
> > polished a few thousandths (mine did anyway) to fit the bearings.
> I'm
> > pretty sure that the bore of this tubing fit the axle just right.
> > You'll have to forgive Spruce for their lack of full explanations of
> > each of their products...they try hard (I'm being kind here...), but
> > they miss the mark a lot. : )
> >
> > Lynn Matteson
> > Grass Lake, Michigan
> > Kitfox IV Speedster w/Jabiru 2200
> > flying w/475+ hrs
> >
> >
> > On Mar 11, 2008, at 6:35 PM, patrick reilly wrote:
> >
> > > Lynn, I see p/n 06-03600 Homebuilders 6" replacement wheel $29.90
> > > page 247 Aircraft spruce. Is that the one? Is it for a 1/2" axle.
> > > It lists "longlife" bearings for $4.65 and states that they are
> > > superior to the standard bearings. It doesn't state solid or
> > > pneumatic, which is odd?
> > >
> > > Pat Reilly
> > > Mod 3 Rebuild
> > > Rockford,IL
> > >
> > > > From: lynnmatt@jps.net
> > > > Subject: Re: Kitfox-List: Sprung Tailwheel
> > > > Date: Tue, 11 Mar 2008 12:57:20 -0400
> > > > To: kitfox-list@matronics.com
> > > >
> <lynnmatt@jps.net>
> > > >
> > > > I had already changed over from the solid Maule tailwheel to
> the 6"
> > > > "Homebuilders Special Tailwheel" as Spruce calls them. It is
> a much
> > > > softer tire than the Maule, weighs less, and has less contact
> area
> > > > with the ground than the Maule. The bearings that come with the
> > > > Spruce wheel are terrible though.
> > > > By the way, I like the looks of your pneumatic job, Jim.
> > > >
> > > > Lynn Matteson
> > > > Grass Lake, Michigan
> > > > Kitfox IV Speedster w/Jabiru 2200
> > > > flying w/475+ hrs
> > > >
> > > >
> > > > On Mar 11, 2008, at 10:20 AM, Jim_and_Lucy Chuk wrote:
> > > >
> > > > > I'm just wondering if those that have had the tailwheel spring
> > > > > break were all running the solid rubber Maule tailwheel. I had
> > > > > that wheel on my Avid MK IV, and you can sure feel every
> little
> > > > > bump through the fusaloge. I would guess that those sharp
> jolts
> > > > > fatigue the spring. Last summer I replaced the wheel with a
> cheep
> > > > > 6' pneumatic castor wheel and it was much smoother, the tire
> > > really
> > > > > soaks up lots of the sharp jolts. I got some better sealed
> > > > > bearings and put them in the wheel. It would have been nice if
> > > > > Maule made a replacement 6' pneumatic tire but they don't.
> This
> > > > > worked for me. Jim=====
> > > >
> > > >
> > > >
> > >
> > > http://www.matronics.com/Navigator?Kitfox-List_-
> > > =================================== _-
> > > forums.matronics.com_-
> > > =================================== _-
> > > contribution_-
> > > ==================================
> &g======================
> >
> >
> >
>
> Helping your favorite cause is as easysenger/IM/Home/?
> source=text_hotmail_join' target='_new'>Learn more._-
> ============================================================ _-
> http://www.matronics.com/Navigator?Kitfox-List_-
> ============================================================ _-
> forums.matronics.com_-
> ============================================================ _-
> contribution_-
> ===========================================================
Message 4
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| Subject: | Re: fuel cap faring |
Ah, the gas cap fairings!
The main thing is you need to install speed brakes, and a an F-4 Phantom
style drag chute for landings!
On my plane, I can switch between 6.00x6 tires, and 8.50x6 tires and barely
notice any speed change, so I'm a bit skeptical about the gas cap fairings.
My cruise speed with an IO-240B is about 120 at 2400 rpm's, and at full
power at 2800 I can hit 140 in level flight. This is pretty consistent for
me regardless of what tires I hang under it, or if I put my landing light
bar under the plane (three 6" dia. lights).
It obviously won't hurt to put them on, but I wouldn't expect to gain any
speed from it.
Regards,
Jeff.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=169234#169234
Message 5
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| Subject: | Sprung Tailwheel |
Lynn, I ordered the 3 leaf spring from John Mcbean yesterday. I have the Ma
ule 6" solid tail wheel. If the Aircraft Spruce is also solid rubber, I mig
ht as well stick with the wheel I have. I thought a pnuematic tire might be
a little lighter and give me a little more cushion.
Pat Reilly
Mod 3 Rebuild
Rockford,IL
From: thesupe@hotmail.comTo: kitfox-list@matronics.comSubject: RE: Kitfox-L
ist: Sprung TailwheelDate: Wed, 12 Mar 2008 04:06:06 +0000
Lynn, Is that tailwheel soft rubber or actually a pneumatic wheel? As far
as the bearings go, I would bet that it wouldn't be to hard to find bear
ings that fit the wheel and have a 1/2" center so it would fit the Maule ax
le. Thanks, Jim Chuk Avids MN> From: lynnmatt@jps.net> Subject: Re: Kit
fox-List: Sprung Tailwheel> Date: Tue, 11 Mar 2008 22:54:21 -0400> To: kitf
lynnmatt@jps.net>> > That's the one. Yes, get the longlife bearings from th
em or from a > local bearing dealer, as the one's shipped with the wheel ar
e poor > quality...A word of warning....the description says "bearings" but
> that means one bearing, and you will need to order two, unless > they've
changed their tune since I ordered mine. You'll have to make > a sleeve fo
r the bearings to fit the Maule axle. I used a length of > 4130 tubing, Spr
uce part number 03-03900, which will have to be > polished a few thousandth
s (mine did anyway) to fit the bearings. I'm > pretty sure that the bore of
this tubing fit the axle just right.> You'll have to forgive Spruce for th
eir lack of full explanations of > each of their products...they try hard (
I'm being kind here...), but > they miss the mark a lot. : )> > Lynn Mattes
on> Grass Lake, Michigan> Kitfox IV Speedster w/Jabiru 2200> flying w/475+
hrs> > > On Mar 11, 2008, at 6:35 PM, patrick reilly wrote:> > > Lynn, I se
e p/n 06-03600 Homebuilders 6" replacement wheel $29.90 > > page 247 Aircra
ft spruce. Is that the one? Is it for a 1/2" axle. > > It lists "longlife"
bearings for $4.65 and states that they are > > superior to the standard be
arings. It doesn't state solid or > > pneumatic, which is odd?> >> > Pat Re
illy> > Mod 3 Rebuild> > Rockford,IL> >> > > From: lynnmatt@jps.net> > > Su
bject: Re: Kitfox-List: Sprung Tailwheel> > > Date: Tue, 11 Mar 2008 12:57:
20 -0400> > > To: kitfox-list@matronics.com> > >> > > --> Kitfox-List messa
ge posted by: Lynn Matteson <lynnmatt@jps.net>> > >> > > I had already chan
ged over from the solid Maule tailwheel to the 6"> > > "Homebuilders Specia
l Tailwheel" as Spruce calls them. It is a much> > > softer tire than the M
aule, weighs less, and has less contact area> > > with the ground than the
Maule. The bearings that come with the> > > Spruce wheel are terrible thoug
h.> > > By the way, I like the looks of your pneumatic job, Jim.> > >> > >
Lynn Matteson> > > Grass Lake, Michigan> > > Kitfox IV Speedster w/Jabiru 2
200> > > flying w/475+ hrs> > >> > >> > > On Mar 11, 2008, at 10:20 AM, Jim
_and_Lucy Chuk wrote:> > >> > > > I'm just wondering if those that have had
the tailwheel spring> > > > break were all running the solid rubber Maule
tailwheel. I had> > > > that wheel on my Avid MK IV, and you can sure feel
every little> > > > bump through the fusaloge. I would guess that those sha
rp jolts> > > > fatigue the spring. Last summer I replaced the wheel with a
cheep> > > > 6' pneumatic castor wheel and it was much smoother, the tire
> > really> > > > soaks up lots of the sharp jolts. I got some better seale
d> > > > bearings and put them in the wheel. It would have been nice if> >
> > Maule made a replacement 6' pneumatic tire but they don't. This> > > >
worked for me. Jim======> > >> > >> > >> >> > http://www.matron
ics.com/Navigator?Kitfox-List_- > > =============
====================== _- > > f
orums.matronics.com_- > > ================
=================== _- > > contributi
on_- > > ======================
=============&g===========
============> > >
Helping your favorite cause is as easysenger/IM/Home/?source=text_hotmail
_join' target='_new'>Learn more.
Message 6
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| Subject: | Re: Kitfox-List Digest: 33 Msgs - 03/10/08 |
I used cordura nylon , like they use for packs , 2024T6 .025 alum ,
velcro and camlocks in the same holes that hold the turtle deck .
----- Original Message -----
From: riquenkelly@aol.com
To: kitfox-list@matronics.com
Sent: Tuesday, March 11, 2008 7:22 PM
Subject: Kitfox-List: Re: Kitfox-List Digest: 33 Msgs - 03/10/08
Trailer Experts,
I have seen outstanding info on this site for the last month or so
regarding trailering the Kitfox. What I haven't seen is any
recommendation for inclement weather. If trailering over a long
distance what has anyone seen to keep rain and road debris from invading
the cockpit?
Thanks for the advice! Lot's of great experience in this site!
Rique
-----Original Message-----
From: Kitfox-List Digest Server <kitfox-list@matronics.com>
To: Kitfox-List Digest List <kitfox-list-digest@matronics.com>
Sent: Tue, 11 Mar 2008 2:58 am
Subject: Kitfox-List Digest: 33 Msgs - 03/10/08
-------------------------------------------------------------------------
-----
Supercharge your AIM. Get the AIM toolbar for your browser.
Message 7
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| Subject: | Re: fuel cap faring |
Jeff, I can get the drag chute from JEGS or Summit. Where can I get those s
peed brakes?
Do not archieve
Pat Reilly
Mod 3 Rebuild
Rockford, IL> Subject: Kitfox-List: Re: fuel cap faring> From: n85ae@yahoo.
com> Date: Wed, 12 Mar 2008 07:38:04 -0700> To: kitfox-list@matronics.com>
as cap fairings! > > The main thing is you need to install speed brakes, an
d a an F-4 Phantom> style drag chute for landings!> > On my plane, I can sw
itch between 6.00x6 tires, and 8.50x6 tires and barely> notice any speed ch
ange, so I'm a bit skeptical about the gas cap fairings.> My cruise speed w
ith an IO-240B is about 120 at 2400 rpm's, and at full> power at 2800 I can
hit 140 in level flight. This is pretty consistent for> me regardless of w
hat tires I hang under it, or if I put my landing light> bar under the plan
e (three 6" dia. lights).> > It obviously won't hurt to put them on, but I
wouldn't expect to gain any> speed from it.> > Regards,> Jeff.> > > > > Rea
d this topic online here:> > http://forums.matronics.com/viewtopic.php?p=
==========> > >
Message 8
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Ahhh, Jeff, my old draggy friend. Skepticism is good. Nothing wrong with
that. In the past you have made it well known how you feel about fairings,
which is fine, but we all have our opinions here. The vast majority of us
don't have 125hp to play with. Most have 100hp or less. I'm a firm
believer that every little bit counts when it comes to cleaning up the
airplane. It's probably not linear, but it all adds up, no matter how small
each item is. Some things are more effective than others, depending on what
part of the airplane is causing the drag.
As for my reason for the fairings, it wasn't so much as to reduce drag, but
to clean up the top surface of the wing. A long time ago, one of our list
members did a oil drop test to see how much the air was disturbed behind the
gas caps. Oil drop is where you take a thick oil and put a bunch of drops
on top of the wing all around the spot you want to test. Then you go fly
and when you get on the ground, jump out and take a quick photo of what you
see. What he found was that immediately behind the gas cap the air was
stalled and it widened out to a point about 18" at the trailing edge of the
wing. In my opinion, when you add both wings together, that was a pretty
big chunk of lifting surface not providing any lift. So, since it was a
long winter, and nothing much else was going on, I decided to kill two birds
with one fairing, well two. Regarding the gas caps, most of the parasitic
drag and loss of lift were resolved. I can't quantify in numbers what it
adds up to, but the weight was probably less than 2oz total and they sure
don't hurt anything. The benefits are increased speed with less throttle
meaning better efficiency which translates to fuel saved. Seems like a no
brainer to me.
As for a drag chute, I can recall a couple landings when I wish I'd had one.
Would have saved a go round.
Slick is good. :-)
Deke Morisse
Mikado Michigan
S5/Subaru/CAP 355+ TT
"The aim of an argument or discussion should not be victory, but progress."
- Joseph Joubert
----- Original Message -----
From: "n85ae" <n85ae@yahoo.com>
Sent: Wednesday, March 12, 2008 10:38 AM
Subject: Kitfox-List: Re: fuel cap faring
>
> Ah, the gas cap fairings!
>
> The main thing is you need to install speed brakes, and a an F-4 Phantom
> style drag chute for landings!
>
> On my plane, I can switch between 6.00x6 tires, and 8.50x6 tires and
> barely
> notice any speed change, so I'm a bit skeptical about the gas cap
> fairings.
> My cruise speed with an IO-240B is about 120 at 2400 rpm's, and at full
> power at 2800 I can hit 140 in level flight. This is pretty consistent for
> me regardless of what tires I hang under it, or if I put my landing light
> bar under the plane (three 6" dia. lights).
>
> It obviously won't hurt to put them on, but I wouldn't expect to gain any
> speed from it.
>
> Regards,
> Jeff.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=169234#169234
>
>
>
Message 9
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| Subject: | Re: fuel cap faring |
"How many people make themselves abstract to appear profound. The most
useful part of abstract terms are the shadows they create to hide a vacuum."
Joseph Joubert......also.
Message 10
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| Subject: | Sprung Tailwheel |
> From: patrick reilly [patreilly43@hotmail.com]
> I have the Maule 6" solid tail wheel. If the Aircraft Spruce is also solid rubber,
I
> might as well stick with the wheel I have.
I had the Maule and changed to the Aircraft Spruce Homebuilders and it's a much
softer ride on my model 3, Patrick.
Cheers,
Michel Verheughe
Norway
Kitfox 3 - Jabiru 2200
<pre><b><font size=2 color="#000000" face="courier new,courier">
</b></font></pre></body></html>
Message 11
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| Subject: | Re: fuel cap faring |
Hey Deke -
You are correct, that every little bit helps. Also it is a hobby, so nothing
wrong with it in the least.
My points more come from - That in he world of basic aerodynamics,
regardless of what you do, the basic design itself IS the REAL issue. No
matter how much you tweak a Kitfox, you will only ever make minor
improvements.
I think some times from the list, you get the impression that people
think they will get a 40 mph gain from all these enhancements. You
simply can't.
The higher horsepower IO-240B really brings this to light. I have a good
bit of power however it becomes clear when I fly that the drag is very
much increasing exponentially and it hits a wall at about 120-140 mph
where you either need another 200 or so horsepower, or some pretty
significant drag reductions to go faster.
When I say significant, I mean like an entirely different wing and
fuselage.
Anyway, that's the only real point.
Regards,
Jeff
P.S. I really posted it to - antagonize Deke. But that's another story ... :)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=169283#169283
Message 12
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| Subject: | Re: Kitfox-List Digest: 33 Msgs - 03/10/08 |
DeWayne, how about some pics?
DeWayne Clifford <kitfox@bresnan.net> wrote: I used cordura nylon , like
they use for packs , 2024T6 .025 alum , velcro and camlocks in the same holes
that hold the turtle deck .
----- Original Message -----
From: riquenkelly@aol.com
To: kitfox-list@matronics.com
Sent: Tuesday, March 11, 2008 7:22 PM
Subject: Kitfox-List: Re: Kitfox-List Digest: 33 Msgs - 03/10/08
Trailer Experts,
I have seen outstanding info on this site for the last month or so regarding
trailering the Kitfox. What I haven't seen is any recommendation for inclement
weather. If trailering over a long distance what has anyone seen to keep
rain and road debris from invading the cockpit?
Thanks for the advice! Lot's of great experience in this site!
Rique
-----Original Message-----
From: Kitfox-List Digest Server <kitfox-list@matronics.com>
Sent: Tue, 11 Mar 2008 2:58 am
Subject: Kitfox-List Digest: 33 Msgs - 03/10/08
---------------------------------
Supercharge your AIM. Get the AIM toolbar for your browser.
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronhref="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c
Marco Menezes
Model 2 582 N99KX
---------------------------------
Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.
Message 13
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| Subject: | Re: fuel cap faring |
You might try http://www.jamestowndistributors.com
Look under "anchors"
Regards,
Jeff
[quote="patreilly43(at)hotmail.co"]Jeff, I can get the drag chute from JEGS or
Summit. Where can I get those speed brakes?
Do not archieve
Pat Reilly
Mod 3 Rebuild
Rockford, IL
> Subject: Re: fuel cap faring
> From: n85ae@yahoo.com
> Date: Wed, 12 Mar 2008 07:38:04 -0700
> To: kitfox-list@matronics.com
>
>
> Ah, the gas cap fairings!
>
> The main thing is you need to install speed brakes, and a an F-4 Phantom
> style drag chute for landings!
>
> On my plane, I can switch between 6.00x6 tires, and 8.50x6 tires and barely
> notice any speed change, so I'm a bit skeptical about the gas cap fairings.
> My cruise speed with an IO-240B is about 120 at 2400 rpm's, and at full
> power at 2800 I can hit 140 in level flight. This is pretty consistent for
> me regardless of what tires I hang under it, or if I put my landing light
> bar under the plane (three 6" dia. lights).
>
> It obviously won't hurt to put them on, but I wouldn't expect to gain any
> speed from it.
>
> Regards,
> Jeff.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=169234#169234
>
>
>
>
>
> >
>
>
>
>
> [b]
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=169286#169286
Message 14
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| Subject: | Re: Sprung Tailwheel |
Hi all,
I know a lot of guys out there have broken there tailwheel springs with the one
and two leaf steel springs that came with some of the older kits. My question
is. Has there been known failures of the Grove aluminum tailwheel spring? I
know Grove doesn't make them anymore. However, this doesn't mean they had failure
problems. They just might not have sold as well as the steel and therefore
discontinued them? There are a bunch of the aluminum springs out there including
the one I have on my aircraft. I agree the aluminum spring doesn't flex/give
as much as the steel ones do. Therefore giving you a rougher ride. However,
I can live with this if that is the only problem. If there have been known
failures of the aluminum springs, then I'm going to replace mine out for a 3 leaf
steel setup.
Chris Budd
Kitfox IV Speedster w/VW 2180
Flying 220+ hrs
Be a better friend, newshound, and
know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
Message 15
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| Subject: | Re: fuel cap faring |
Kitfoxers!
Even small improvement help to gain speed, or reduce fuel burn, but it all
is relative, just as intelligence is.
small wheels and wheelpants might make 2-3 miles on a kitfox, 10-15 miles on
a KR-2.
I ones read about a EUROPA that had perfect made fillets between wing and
fuselage, when sealing the fillets to fuselage with tape it was going 10
knots faster, like flying with parking brake set! This one hade a constant
speed prop!
With a fixed pitch prop, and cruising at a curtain RPM you will not notice
much improvement until you calculate your fuel consumption. at WOT you will
see increase in RPM and speed.
going from 65 hp and say 102 MPH to a 125 hp will gain 24% more speed in
theory, = 127 MPH
In practice - maybe - maybe not, the whole concept is often designed for a
predetermined speed range, wing area, airfoil and incidence is chosen for
this speed, flying with tail scraping the sky and propeller pointing towards
the earth isn't optimal. a different airfoil, smaller wing, higher weight or
little of all three will make a difference.
Weight cost speed too.
With today's fuel price aerodynamic improvement isn't all wrong, it isn't
1-2 dollar a gallon any more. but as the blond girl said: "I just buy gas
for one hundred anyway" blinked here eye and drove away!
It is easy to add drag to a airplane but difficult to reduce it!
Jan
----- Original Message -----
From: "n85ae" <n85ae@yahoo.com>
Sent: Wednesday, March 12, 2008 5:41 PM
Subject: Kitfox-List: Re: fuel cap faring
>
> Hey Deke -
>
> You are correct, that every little bit helps. Also it is a hobby, so
> nothing
> wrong with it in the least.
>
> My points more come from - That in he world of basic aerodynamics,
> regardless of what you do, the basic design itself IS the REAL issue. No
> matter how much you tweak a Kitfox, you will only ever make minor
> improvements.
>
> I think some times from the list, you get the impression that people
> think they will get a 40 mph gain from all these enhancements. You
> simply can't.
>
> The higher horsepower IO-240B really brings this to light. I have a good
> bit of power however it becomes clear when I fly that the drag is very
> much increasing exponentially and it hits a wall at about 120-140 mph
> where you either need another 200 or so horsepower, or some pretty
> significant drag reductions to go faster.
>
> When I say significant, I mean like an entirely different wing and
> fuselage.
>
> Anyway, that's the only real point.
>
> Regards,
> Jeff
>
> P.S. I really posted it to - antagonize Deke. But that's another story ...
> :)
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=169283#169283
>
>
> __________ NOD32 2838 (20080131) Information __________
>
>
>
Message 16
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| Subject: | Re: Sprung Tailwheel |
The Spruce tailwheel is pretty soft, and gives a much more gentle
ride, I and others have found. Yes it is solid, but it is softer.
I've thought about taking the helper spring out of my 3-leaf pack,
thinking it may soften the ride, and sent an email to John McBean
questioning that move, but didn't get an answer.
I don't think that removing the helper spring would hurt the safety
of the 3-leaf'er, but I could be wrong. If it was taken out, the two
main leafs would still give the redundancy that is important, I believe.
Lynn Matteson
Grass Lake, Michigan
Kitfox IV Speedster w/Jabiru 2200
flying w/480+ hrs
On Mar 12, 2008, at 10:38 AM, patrick reilly wrote:
> Lynn, I ordered the 3 leaf spring from John Mcbean yesterday. I
> have the Maule 6" solid tail wheel. If the Aircraft Spruce is also
> solid rubber, I might as well stick with the wheel I have. I
> thought a pnuematic tire might be a little lighter and give me a
> little more cushion.
>
> Pat Reilly
> Mod 3 Rebuild
> Rockford,IL
>
>
Message 17
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| Subject: | Sprung Tailwheel |
Chris, I've been on this list since long before Grove started producing
the spring. I can only recall one failure here. There was much
discussion why it failed and as I recall, the owner felt that it was due
to the way it was mounted. Others have since fabricated saddle type
mounts so that the spring can't move around. Personally, I feel that he
just happened to get a bad one. Then again, you never know how people
are going to treat their airplanes, some are very rough on them and
others are not.
With the Grove, I know of no trends that tend to make me believe that
the spring itself is at fault. One common complaint though was that it
is very stiff, and better suited for the heavier models. Also, a
pneumatic tire, as others have stated, helps whatever spring you are
using.
I don't know why Grove stopped producing them. Probably was from lack
of sales.
Deke Morisse
Mikado Michigan
S5/Subaru/CAP 355+ TT
"The aim of an argument or discussion should not be victory, but
progress."
- Joseph Joubert
----- Original Message -----
From: Chris Budd
To: KitFox List
Sent: Wednesday, March 12, 2008 1:34 PM
Subject: Kitfox-List: Re: Sprung Tailwheel
Hi all,
I know a lot of guys out there have broken there tailwheel springs
with the one and two leaf steel springs that came with some of the older
kits. My question is. Has there been known failures of the Grove
aluminum tailwheel spring? I know Grove doesn't make them anymore.
However, this doesn't mean they had failure problems. They just might
not have sold as well as the steel and therefore discontinued them?
There are a bunch of the aluminum springs out there including the one I
have on my aircraft. I agree the aluminum spring doesn't flex/give as
much as the steel ones do. Therefore giving you a rougher ride. However,
I can live with this if that is the only problem. If there have been
known failures of the aluminum springs, then I'm going to replace mine
out for a 3 leaf steel setup.
Chris Budd
Kitfox IV Speedster w/VW 2180
Flying 220+ hrs
-------------------------------------------------------------------------
-----
Be a better friend, newshound, and
Message 18
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| Subject: | Re: fuel cap faring |
Jeff, the perennial smartass, but thanks for adding some humor to this list.
:-)
Deke
do not archive
>
> You might try http://www.jamestowndistributors.com
>
> Look under "anchors"
>
> Regards,
> Jeff
Message 19
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| Subject: | Re: fuel cap faring |
Jeff, you are absolutely correct in that the Kitfox is only capable of so
much cleanup. I can't argue that. If you want lift, you gotta compromise
with drag, so it's a draggy airplane, but not as bad as many others out
there and there is room to get some more knots out of it without derogating
the mission. When it comes to buying gas, I'm a real cheapskate and if I
can get a few more miles per gallon without adding much weight, that's what
I'll do. Like you said, it's a hobby, a quest, a mission, or perhaps even
an obsession.
Antagonized in Mikado, MI
Sunny, warming up and spring is springing
Whaoo!
Deke Morisse
Mikado Michigan
S5/Subaru/CAP 355+ TT
"The aim of an argument or discussion should not be victory, but progress."
- Joseph Joubert
>
> Hey Deke -
>
> You are correct, that every little bit helps. Also it is a hobby, so
> nothing
> wrong with it in the least.
>
> My points more come from - That in he world of basic aerodynamics,
> regardless of what you do, the basic design itself IS the REAL issue. No
> matter how much you tweak a Kitfox, you will only ever make minor
> improvements.
>
> I think some times from the list, you get the impression that people
> think they will get a 40 mph gain from all these enhancements. You
> simply can't.
>
> The higher horsepower IO-240B really brings this to light. I have a good
> bit of power however it becomes clear when I fly that the drag is very
> much increasing exponentially and it hits a wall at about 120-140 mph
> where you either need another 200 or so horsepower, or some pretty
> significant drag reductions to go faster.
>
> When I say significant, I mean like an entirely different wing and
> fuselage.
>
> Anyway, that's the only real point.
>
> Regards,
> Jeff
>
> P.S. I really posted it to - antagonize Deke. But that's another story ...
> :)
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=169283#169283
>
>
>
Message 20
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| Subject: | Re: fuel cap faring |
Ah, when it comes to buying gas, my wife is a real cheapskate. When
I built mine I was single, and working as a consultant ($$$) and trying
to figure out how to put a 5000 hp Allison T-56 Turboprop on it.
Now that I'm married, I'm looking at solar power ...
Jeff
> When it comes to buying gas, I'm a real cheapskate
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=169332#169332
Message 21
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| Subject: | Sprung Tailwheel |
Mike, Thanks for the advice. Do not archieve.
Pat Reilly> Date: Wed, 12 Mar 2008 17:23:18 +0100> From: michel@online.no>
> > From: patrick reilly [patreilly43@hotmail.com]> > I have the Maule 6" s
olid tail wheel. If the Aircraft Spruce is also solid rubber, I > > might a
s well stick with the wheel I have.> > I had the Maule and changed to the A
ircraft Spruce Homebuilders and it's a much softer ride on my model 3, Patr
ick.> > Cheers,> Michel Verheughe> Norway> Kitfox 3 - Jabiru 2200> > > <pre
ref="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronics
=> > </b></font></pre>
Message 22
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| Subject: | Sprung Tailwheel |
What breakage reports. Have not heard of one using the aluminum spring. C
lint
From: Catz631@aol.comDate: Wed, 12 Mar 2008 08:14:55 -0400Subject: Re: Kitf
ox-List: Sprung TailwheelTo: kitfox-list@matronics.com
I too had the aluminum tailspring but found it too rough for my grass runwa
y (and all the breakage reports) so I sold it on EBAY and installed the 3 l
eaf spring ,removed the Maule tailwheel, and installed a Matco tailwheel.Th
e weight difference for the combination was less than 1/2 pound. I now have
a flexable tailwheel that rides much better on grass and pavement!
Dick Maddux
Fox 4-1200
Pensacola,Fl
It's Tax Time! Get tips, forms and advice on AOL Money & Finance.
Message 23
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Deke, I see your gas cap fairings have a piece in front as well as behind t
he cap. I think the ones you buy have only a piece behind the cap. Being an
old canoe builder I know that the increased lineal length to part and retu
rn the air is more efficient. Was there any "testing" done in your design o
r was it an eyeballed design?
Pat Reilly
Mod 3 Rebuild
Rockford, IL> From: fox5flyer@idealwifi.net> To: kitfox-list@matronics.com>
Subject: Kitfox-List: fuel cap faring> Date: Wed, 12 Mar 2008 11:21:36 -04
et>> > Ahhh, Jeff, my old draggy friend. Skepticism is good. Nothing wrong
with > that. In the past you have made it well known how you feel about fai
rings, > which is fine, but we all have our opinions here. The vast majorit
y of us > don't have 125hp to play with. Most have 100hp or less. I'm a fir
m > believer that every little bit counts when it comes to cleaning up the
> airplane. It's probably not linear, but it all adds up, no matter how sma
ll > each item is. Some things are more effective than others, depending on
what > part of the airplane is causing the drag.> As for my reason for the
fairings, it wasn't so much as to reduce drag, but > to clean up the top s
urface of the wing. A long time ago, one of our list > members did a oil dr
op test to see how much the air was disturbed behind the > gas caps. Oil dr
op is where you take a thick oil and put a bunch of drops > on top of the w
ing all around the spot you want to test. Then you go fly > and when you ge
t on the ground, jump out and take a quick photo of what you > see. What he
found was that immediately behind the gas cap the air was > stalled and it
widened out to a point about 18" at the trailing edge of the > wing. In my
opinion, when you add both wings together, that was a pretty > big chunk o
f lifting surface not providing any lift. So, since it was a > long winter,
and nothing much else was going on, I decided to kill two birds > with one
fairing, well two. Regarding the gas caps, most of the parasitic > drag an
d loss of lift were resolved. I can't quantify in numbers what it > adds up
to, but the weight was probably less than 2oz total and they sure > don't
hurt anything. The benefits are increased speed with less throttle > meanin
g better efficiency which translates to fuel saved. Seems like a no > brain
er to me.> As for a drag chute, I can recall a couple landings when I wish
I'd had one. > Would have saved a go round.> Slick is good. :-)> Deke Moris
se> Mikado Michigan> S5/Subaru/CAP 355+ TT> "The aim of an argument or disc
ussion should not be victory, but progress."> - Joseph Joubert> > ----- Ori
ginal Message ----- > From: "n85ae" <n85ae@yahoo.com>> To: <kitfox-list@mat
ronics.com>> Sent: Wednesday, March 12, 2008 10:38 AM> Subject: Kitfox-List
5ae@yahoo.com>> >> > Ah, the gas cap fairings!> >> > The main thing is you
need to install speed brakes, and a an F-4 Phantom> > style drag chute for
landings!> >> > On my plane, I can switch between 6.00x6 tires, and 8.50x6
tires and > > barely> > notice any speed change, so I'm a bit skeptical abo
ut the gas cap > > fairings.> > My cruise speed with an IO-240B is about 12
0 at 2400 rpm's, and at full> > power at 2800 I can hit 140 in level flight
. This is pretty consistent for> > me regardless of what tires I hang under
it, or if I put my landing light> > bar under the plane (three 6" dia. lig
hts).> >> > It obviously won't hurt to put them on, but I wouldn't expect t
o gain any> > speed from it.> >> > Regards,> > Jeff.> >> >> >> >> > Read th
is topic online here:> >> > http://forums.matronics.com/viewtopic.php?p=1
================> > >
Message 24
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| Subject: | RE : Sprung tail wheel |
Hi guys, I realize I too have the aluminium grove tail spring=2Ei'm surpri
se to hear there has been breaking problems with them=2E Skystar did recom
mend it to me after I had broke my original leaf spring with significant d
ammages to the rudder=2EI just want to make sure it does not happen again=2E
Is there any signs of fatigue to see it coming or should just go ahead an
d replace it anyway=3F I had a few rough landins with it, no problems so f
ar
thanks
Jacques Voynaud
Conseiller en formation
Cegep de l'Abitibi-T=E9miscamingue
Centre de Ville-Marie (819)629-3211
jacques=2Evoynaud@cegepat=2Eqc=2Eca
Message 25
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|
| Subject: | RE : Sprung tail wheel |
Jacque, I started the tailwheel spring posts. I have the solid Grove "sprin
g". It doesn't appear to have any, and I mean any spring properties to cush
ion the tail in a landing. I am rebuilding a mod 3. I have no flights yet,
but know what a "spring" is suposed to do, and I thought now is the time to
make that modification. One post reported a solid Grove spring broke. I Ca
n't see how that would happen unless you dropped the plane wingless tail fi
rst off a 50 story building. But, I do see how the lack of a real "spring"
on the tail could transmit the shock to the fusalage frame causing frame da
mage.
Pat Reilly
Mod 3 rebuild
Rockford, IL
From: jacques.voynaud@cegepat.qc.caTo: kitfox-list@matronics.comSubject: Ki
tfox-List: RE : Sprung tail wheelDate: Wed, 12 Mar 2008 15:26:38 -0500
Hi guys, I realize I too have the aluminium grove tail spring.i'm surprise
to hear there has been breaking problems with them. Skystar did recommend i
t to me after I had broke my original leaf spring with significant dammages
to the rudder.I just want to make sure it does not happen again. Is there
any signs of fatigue to see it coming or should just go ahead and replace i
t anyway? I had a few rough landins with it, no problems so far
thanks
Jacques Voynaud
Conseiller en formation
Cegep de l'Abitibi-T=E9miscamingue
Centre de Ville-Marie (819)629-3211
jacques.voynaud@cegepat.qc.ca
Message 26
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| Subject: | Re: fuel cap faring |
Nah, it was eyeballed. I was just bored and decided I liked the look
of putting the piece in front to make it look more aerodynamic.
Probably no measurable difference at my speeds.
Deke
----- Original Message -----
From: patrick reilly
To: kitfox-list@matronics.com
Sent: Wednesday, March 12, 2008 3:57 PM
Subject: RE: Kitfox-List: fuel cap faring
Deke, I see your gas cap fairings have a piece in front as well as
behind the cap. I think the ones you buy have only a piece behind the
cap. Being an old canoe builder I know that the increased lineal length
to part and return the air is more efficient. Was there any "testing"
done in your design or was it an eyeballed design?
Pat Reilly
Mod 3 Rebuild
Rockford, IL
> From: fox5flyer@idealwifi.net
> To: kitfox-list@matronics.com
> Subject: Kitfox-List: fuel cap faring
> Date: Wed, 12 Mar 2008 11:21:36 -0400
>
<fox5flyer@idealwifi.net>
>
> Ahhh, Jeff, my old draggy friend. Skepticism is good. Nothing wrong
with
> that. In the past you have made it well known how you feel about
fairings,
> which is fine, but we all have our opinions here. The vast majority
of us
> don't have 125hp to play with. Most have 100hp or less. I'm a firm
> believer that every little bit counts when it comes to cleaning up
the
> airplane. It's probably not linear, but it all adds up, no matter
how small
> each item is. Some things are more effective than others, depending
on what
> part of the airplane is causing the drag.
> As for my reason for the fairings, it wasn't so much as to reduce
drag, but
> to clean up the top surface of the wing. A long time ago, one of our
list
> members did a oil drop test to see how much the air was disturbed
behind the
> gas caps. Oil drop is where you take a thick oil and put a bunch of
drops
> on top of the wing all around the spot you want to test. Then you go
fly
> and when you get on the ground, jump out and take a quick photo of
what you
> see. What he found was that immediately behind the gas cap the air
was
> stalled and it widened out to a point about 18" at the trailing edge
of the
> wing. In my opinion, when you add both wings together, that was a
pretty
> big chunk of lifting surface not providing any lift. So, since it
was a
> long winter, and nothing much else was going on, I decided to kill
two birds
> with one fairing, well two. Regarding the gas caps, most of the
parasitic
> drag and loss of lift were resolved. I can't quantify in numbers
what it
> adds up to, but the weight was probably less than 2oz total and they
sure
> don't hurt anything. The benefits are increased speed with less
throttle
> meaning better efficiency which translates to fuel saved. Seems like
a no
> brainer to me.
> As for a drag chute, I can recall a couple landings when I wish I'd
had one.
> Would have saved a go round.
> Slick is good. :-)
> Deke Morisse
> Mikado Michigan
> S5/Subaru/CAP 355+ TT
> "The aim of an argument or discussion should not be victory, but
progress."
> - Joseph Joubert
>
> ----- Original Message -----
> From: "n85ae" <n85ae@yahoo.com>
> To: <kitfox-list@matronics.com>
> Sent: Wednesday, March 12, 2008 10:38 AM
> Subject: Kitfox-List: Re: fuel cap faring
>
>
> >
> > Ah, the gas cap fairings!
> >
> > The main thing is you need to install speed brakes, and a an F-4
Phantom
> > style drag chute for landings!
> >
> > On my plane, I can switch between 6.00x6 tires, and 8.50x6 tires
and
> > barely
> > notice any speed change, so I'm a bit skeptical about the gas cap
> > fairings.
> > My cruise speed with an IO-240B is about 120 at 2400 rpm's, and at
full
> > power at 2800 I can hit 140 in level flight. This is pretty
consistent for
> > me regardless of what tires I hang under it, or if I put my
landing light
> > bar under the plane (three 6" dia. lights).
> >
> > It obviously won't hurt to put them on, but I wouldn't expect to
gain any
> > speed from it.
> >
> > Regards,
> > Jeff.
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=169234#169234
> >
> >
> >
> >
> >
> >
> &=============
>
>
>
Message 27
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|
| Subject: | Re: RE : Sprung tail wheel |
As I said in my previous email. There has been only one Grove spring
failure report here on this list that I'm aware of, and that was several
years ago.
Deke
do not archive
----- Original Message -----
From: Jacques Voynaud
To: kitfox-list@matronics.com
Sent: Wednesday, March 12, 2008 4:26 PM
Subject: Kitfox-List: RE : Sprung tail wheel
Hi guys, I realize I too have the aluminium grove tail spring.i'm
surprise to hear there has been breaking problems with them. Skystar did
recommend it to me after I had broke my original leaf spring with
significant dammages to the rudder.I just want to make sure it does not
happen again. Is there any signs of fatigue to see it coming or should
just go ahead and replace it anyway? I had a few rough landins with it,
no problems so far
thanks
Jacques Voynaud
Conseiller en formation
Cegep de l'Abitibi-T=E9miscamingue
Centre de Ville-Marie (819)629-3211
jacques.voynaud@cegepat.qc.ca
Message 28
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| Subject: | Rotax 912 80HP Idle RPM |
At what RPM do you set your 80 HP Rotax 912 when the throttle is pulled all the
way back (and the engine will still run)? I understand Rotax suggests 2,000
to 2,500 RPM at idle, but I'm referring to when the throttle is all the way back
and you are about to land, without killing the engine, or when you want to
taxi slowly?
--------
Steve Wilson
Huntsville, UT
Kitfox I-IV 85DD
912A / 3 Blade Warp Drive
Convertable Nosewheel & Tailwheel
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=169388#169388
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| Subject: | Re: Rotax 912 80HP Idle RPM |
mine is set at about 1800 rpm for LGU. Should be about the same for Morgan. The
key is as slow as possible without excessive shaking and clatter from the impulse
washers.
John Kerr
-------------- Original message --------------
From: "SkySteve" <Wilson@REinfo.org>
>
> At what RPM do you set your 80 HP Rotax 912 when the throttle is pulled all the
> way back (and the engine will still run)? I understand Rotax suggests 2,000 to
> 2,500 RPM at idle, but I'm referring to when the throttle is all the way back
> and you are about to land, without killing the engine, or when you want to taxi
> slowly?
>
> --------
> Steve Wilson
> Huntsville, UT
> Kitfox I-IV 85DD
> 912A / 3 Blade Warp Drive
> Convertable Nosewheel & Tailwheel
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=169388#169388
>
>
>
>
>
>
>
>
>
>
<html><body>
<DIV>mine is set at about 1800 rpm for LGU. Should be about the same for
Morgan. The key is as slow as possible without excessive shaking and clatter
from the impulse washers.</DIV>
<DIV> </DIV>
<DIV>John Kerr</DIV>
<DIV> </DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">-------------- Original message -------------- <BR>From: "SkySteve" <Wilson@REinfo.org> <BR><BR>> --> Kitfox-List message posted by: "SkySteve" <WILSON@REINFO.ORG><BR>> <BR>> At what RPM do you set your 80 HP Rotax 912 when the throttle is pulled all the <BR>> way back (and the engine will still run)? I understand Rotax suggests 2,000 to <BR>> 2,500 RPM at idle, but I'm referring to when the throttle is all the way back <BR>> and you are about to land, without killing the engine, or when you want to taxi <BR>> slowly? <BR>> <BR>> -------- <BR>> Steve Wilson <BR>> Huntsville, UT <BR>> Kitfox I-IV 85DD <BR>> 912A / 3 Blade Warp Drive <BR>> Convertable Nosewheel & Tailwheel <BR>> <BR>> <BR>> <BR>> <BR>> Read this topic online here: <BR>> <BR>> http://forums.matronics.com/viewtopic.php?p=169388#169388 <BR>> <BR>>
<BR>&
=====
================================= <BR>> <BR>> <BR>> </BLOCKQUOTE>
<pre><b><font size=2 color="#000000" face="courier new,courier">
</b></font></pre></body></html>
Message 30
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| Subject: | Re: Rotax 912 80HP Idle RPM |
Thanks, John. I currently have mine set at 1800 RPM also, but it really taxis
fast and would like to be able to slow down without riding the brakes.
--------
Steve Wilson
Huntsville, UT
Kitfox I-IV 85DD
912A / 3 Blade Warp Drive
Convertable Nosewheel & Tailwheel
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=169411#169411
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| Subject: | Re: Rotax 912 80HP Idle RPM |
My idle is set to be able to get as low as 1500. This is only used for landing.
The minimum rpm while landing will still be about 2000 rpm until touchdown.
Then the engine will slow down to 1500 if I don't bring in a little throttle.
Sure helps on short landings. The latest from Rotax is that the minimum rpm
should be set for the needs of the aircraft and the mission which can vary from
1400 to 2000 rpm. I always taxi between 1800 and 2000 because that is smoother.
But do have to ride the brakes a bit.
Jim Shumaker
----- Original Message ----
From: SkySteve <Wilson@REinfo.org>
Sent: Wednesday, March 12, 2008 2:52:37 PM
Subject: Kitfox-List: Rotax 912 80HP Idle RPM
At what RPM do you set your 80 HP Rotax 912 when the throttle is pulled all the
way back (and the engine will still run)? I understand Rotax suggests 2,000
to 2,500 RPM at idle, but I'm referring to when the throttle is all the way back
and you are about to land, without killing the engine, or when you want to
taxi slowly?
--------
Steve Wilson
Huntsville, UT
Kitfox I-IV 85DD
912A / 3 Blade Warp Drive
Convertable Nosewheel & Tailwheel
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=169388#169388
Message 32
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| Subject: | Re: Rotax 912 80HP Idle RPM |
Thanks, Jim. I think I'll back mine down a bit and try it.
--------
Steve Wilson
Huntsville, UT
Kitfox I-IV 85DD
912A / 3 Blade Warp Drive
Convertable Nosewheel & Tailwheel
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=169466#169466
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| Subject: | Re: Rotax 912 80HP Idle RPM |
I can pull my throttle on a short final where the prop will keep the engine
idling. If I don't add throttle after my wheels touch the engine will die. I
feel THAT is perfect control. Steve Bennett
**************It's Tax Time! Get tips, forms, and advice on AOL Money &
Finance. (http://money.aol.com/tax?NCID=aolprf00030000000001)
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| Subject: | Lord mount "pre-compression" |
Anyone have trouble getting the rubber lord mount grommets to compress a little
to start the engine mount bolts?
Have a 912 and trying to get the ring mount attached to the engine mount. When
I get all the 'stuff' in line, there aren't any threads sticking out to start
the castle nut. I can compress a little and get a glimpse of a thread but with
the metal bushing inside, can't seem to get the nuts started.
Is there a secret trick or tool for 'pre-compressing' the lords to get threads
out?
And yes, I am using the proper bolts and all.
Thanks!
Wade
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=169483#169483
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