Today's Message Index:
----------------------
1. 09:57 AM - Re: Problems, problems (kerrjohna@comcast.net)
2. 12:31 PM - Re: Problems, problems (Lowell Fitt)
3. 06:28 PM - Fewer Problems (Guy Buchanan)
4. 06:42 PM - Re: Fewer Problems (Lowell Fitt)
5. 07:05 PM - Re: Fewer Problems (Guy Buchanan)
Message 1
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| Subject: | Re: Problems, problems |
Replaced my polycarbonate with the same in about 4 hours. Local vendor obtained
the flat sheet for me for less than $100. Lay the old over the new and mark the
paper for trimming a little wide of necessary to allow for final fit.
I have a 20000f capacitor with the ducati behind the firewall and have no noise.
John Kerr
Logan UT
Waiting for back ordered spring gear to complete repairs. Will be selling the new
tube gear for Classic IV
----- Original Message -----
From: "Lowell Fitt" <lcfitt3@gmail.com>
Sent: Thursday, July 16, 2015 10:05:26 PM
Subject: Re: Kitfox-List: Problems, problems
Guy,
Sorry about the challenges. I know some folks who have a capacitor in the charge
circuit for noise suppression. Regarding the windshield - I personally like
the Polycarbonate windshield. by removing your old one, you have a perfect pattern
for cutting and drilling a new one and it is a half day project - material
often available locally. The Polycarbonate version is about a third the weight
of the Acrylic one. If you are going in the Acrylic direction, you can get
it direct from L P Aeroplastics - no waiting. I am pretty sure they supply Kitfox
Aircraft as that is what the guys installing them call them. Treat the Acrylic
kindly as it can crack easily during installation. Don't force it to fit.
Lowell
From: Guy Buchanan
Sent: Thursday, July 16, 2015 4:08 PM
Subject: Kitfox-List: Problems, problems
We're having some fun now!
* Monday morning pull the plane out to find fuel leaking from one of the wing
valves. Fortunately I have another in stock. (Why, I don't know.)
* Monday afternoon go flying and fry the Key West voltage regulator. I'm pulling
almost no load so it's probably due to heat. (Very hot forward of the firewall.)
Mount the Ducati that came with the engine behind the firewall. I get
some noise on the headsets but it's not too bad.
* Tuesday for a good long flight and come back to find I'm melting the PVC
aero cover on the gear leg. Bad. I had the stick on heat shield but it's really
for radiated heat, not an impinging hot jet stream. Spend the next two days
making a cool stainless heat shield.
* Today go flying and three things happen:
* The Ducati is putting out enough noise to cause the music playing intercom
(Sigtronics SPA-400 TSO) to mute. Alternator off, music; alternator on,
no music. Trivial but annoying. Questions:
* Anyone have a Ducati forward of the firewall? Does it live long there?
(I can put mine back forward, but don't want to fry it.)
* Anyone have a Ducati aft of the firewall? Do you get radio noise?
Anyone built a Faraday cage or other noise attenuation device?
* Climbing at about 13.5k I get a sudden overheat on the rear cylinder.
(Running a GRT 2000 with CHT on 1 and 4 cylinders, just like stock.) Now the
rear cylinder runs typically 40-60F hotter than the front. I assumed this was
air cooling, but I'm wondering if I have something wrong with my cooling system
that's making that rear cylinder run hotter. When I got the overheat indication
I pulled the power back and everything re-normalized happily. Back at the
hangar I discovered coolant sprayed over the inside of the engine compartment
indicating the cap vented. So I'm guessing that rear cylinder boiled momentarily,
then recovered when I pulled the power. Is that recoverable? Or am I looking
at an inspection and tear-down? Do you guys get different CHT's on 1 and 4?
* And now for the coup de gras. Running at 13.5k' where it's nice and cool
I notice a 6' crack in the windscreen, running down from the upper left corner
where everything's tight. By the time I get hangared it's 12", too long to
ignore or fix. So, new windscreen time. (Double damn.) Questions:
* Has anyone bought the LP Aero windscreen? Is it fitted? Did it fit
reasonably well?
* Is John's windscreen fitted? Or is it flat sheet?
* Anyone heat-form their windscreen? I know the guy who put mine together
did, but obviously not well enough. Anyone have a K-IV windscreen mold?
Thanks all. Sorry for the long winded post. Obviously we're not making it to Osh
this year. Very sad. We'll try again next year with a bird that's flying well
in advance.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and NO LONGER grounded
Now a glider pilot, too.
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
Message 2
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| Subject: | Re: Problems, problems |
One more thought on the Polycarbonate - make that two, or three. My
first Model IV had a single replacement in 900 hours. some have heated
the wing carry through area with a heat gun to reduce stresses. I have
never tried it as the Polycarbonate absorbs water - to a significant
degree. Heat it significantly above 212=C2=B0 and it the internal water
will boil resulting in internal bubbles. I have installed one Acrylic
windshield. It was on a Series V and the windshield was an early
version and fit very poorly. It was for someone else so I was vary
careful on the installation because the push to adjust and "CRACK"
reports of others scared me to death. It finally went on successfully,
but required some significant fiberglass work to get the wing areas
looking OK fairing wise. There are two thicknesses that guys use, the
060" and .093". Keeping in mind that the minimum cold bend radius
recommended is 100 times the thickness the .093 would be almost ten
inches, or the .060 - 6 inches., I prefer the .060" for that reason.
But, I will occasionally get a slight inward bowing of the windshield
during a rapid descent which might take me a bit over cruise speed.
Others don=99t feel comfortable with that and go with the .093".
The following link is from the brand used by Tap Plastics and gives
detailed advice for the fabrication of the plastic.
http://www.tapplastics.com/uploads/pdf/Fabrication_Guide.pdf
Lowell
From: kerrjohna@comcast.net
Sent: Friday, July 17, 2015 9:54 AM
Subject: Re: Kitfox-List: Problems, problems
Replaced my polycarbonate with the same in about 4 hours. Local vendor
obtained the flat sheet for me for less than $100. Lay the old over the
new and mark the paper for trimming a little wide of necessary to allow
for final fit.
I have a 20000f capacitor with the ducati behind the firewall and have
no noise.
John Kerr
Logan UT
Waiting for back ordered spring gear to complete repairs. Will be
selling the new tube gear for Classic IV
-------------------------------------------------------------------------
-------
From: "Lowell Fitt" <lcfitt3@gmail.com>
Sent: Thursday, July 16, 2015 10:05:26 PM
Subject: Re: Kitfox-List: Problems, problems
Guy,
Sorry about the challenges. I know some folks who have a capacitor in
the charge circuit for noise suppression. Regarding the windshield - I
personally like the Polycarbonate windshield. by removing your old one,
you have a perfect pattern for cutting and drilling a new one and it is
a half day project - material often available locally. The
Polycarbonate version is about a third the weight of the Acrylic one.
If you are going in the Acrylic direction, you can get it direct from L
P Aeroplastics - no waiting. I am pretty sure they supply Kitfox
Aircraft as that is what the guys installing them call them. Treat the
Acrylic kindly as it can crack easily during installation. Don't force
it to fit.
Lowell
From: Guy Buchanan
Sent: Thursday, July 16, 2015 4:08 PM
Subject: Kitfox-List: Problems, problems
We're having some fun now!
a.. Monday morning pull the plane out to find fuel leaking from one of
the wing valves. Fortunately I have another in stock. (Why, I don't
know.)
b.. Monday afternoon go flying and fry the Key West voltage regulator.
I'm pulling almost no load so it's probably due to heat. (Very hot
forward of the firewall.) Mount the Ducati that came with the engine
behind the firewall. I get some noise on the headsets but it's not too
bad.
c.. Tuesday for a good long flight and come back to find I'm melting
the PVC aero cover on the gear leg. Bad. I had the stick on heat shield
but it's really for radiated heat, not an impinging hot jet stream.
Spend the next two days making a cool stainless heat shield.
d.. Today go flying and three things happen:
a.. The Ducati is putting out enough noise to cause the music
playing intercom (Sigtronics SPA-400 TSO) to mute. Alternator off,
music; alternator on, no music. Trivial but annoying. Questions:
a.. Anyone have a Ducati forward of the firewall? Does it live
long there? (I can put mine back forward, but don't want to fry it.)
b.. Anyone have a Ducati aft of the firewall? Do you get radio
noise? Anyone built a Faraday cage or other noise attenuation device?
b.. Climbing at about 13.5k I get a sudden overheat on the rear
cylinder. (Running a GRT 2000 with CHT on 1 and 4 cylinders, just like
stock.) Now the rear cylinder runs typically 40-60F hotter than the
front. I assumed this was air cooling, but I'm wondering if I have
something wrong with my cooling system that's making that rear cylinder
run hotter. When I got the overheat indication I pulled the power back
and everything re-normalized happily. Back at the hangar I discovered
coolant sprayed over the inside of the engine compartment indicating the
cap vented. So I'm guessing that rear cylinder boiled momentarily, then
recovered when I pulled the power. Is that recoverable? Or am I looking
at an inspection and tear-down? Do you guys get different CHT's on 1 and
4?
c.. And now for the coup de gras. Running at 13.5k' where it's nice
and cool I notice a 6' crack in the windscreen, running down from the
upper left corner where everything's tight. By the time I get hangared
it's 12", too long to ignore or fix. So, new windscreen time. (Double
damn.) Questions:
a.. Has anyone bought the LP Aero windscreen? Is it fitted? Did it
fit reasonably well?
b.. Is John's windscreen fitted? Or is it flat sheet?
c.. Anyone heat-form their windscreen? I know the guy who put mine
together did, but obviously not well enough. Anyone have a K-IV
windscreen mold?
Thanks all. Sorry for the long winded post. Obviously we're not making
it to Osh this year. Very sad. We'll try again next year with a bird
that's flying well in advance.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and NO LONGER grounded
Now a glider pilot, too.
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matron
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
arget="_blank"
data-mce-href="http://www.matronics.com/Navigator?Kitfox-List">http://w
ww.matronics.com/Navigator?Kitfox-List
ta-mce-href="http://forums.matronics.com">http://forums.matronics.com
_blank"
data-mce-href="http://www.matronics.com/contribution">http://www.matron
ics.com/contribution
Message 3
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Thanks, everyone, for all the help. I've learned a couple of things:
* The acrylic windshield I've been flying behind is beautiful and
chemical resistant but would have turned into a bunch of Ginsu
knives had it ever been hit by a bird, or even a small rock coming
off the prop; not good. (Some interesting videos from the motorcycle
community.) I'll definitely be converting to polycarbonate; not
scratch resistant, not fuel resistant, but I least I'll keep my
pretty face, as well as living with a much easier installation. Wish
I could find a smoke or light grey in .093, but perhaps a canopy
should always be clear, for max visibility. It's also much, much,
cheaper. ($86 vs
* Looks like cylinder 3 may be getting hot water from a water inlet
hose a little too exposed to the nearby exhaust. I'll try some heat
shields.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and sorta grounded
Now a glider pilot, too.
Message 4
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| Subject: | Re: Fewer Problems |
Guy,
Tap Plastics has what they call transparent gray. They will sell a
4"X4"X1/8" sample for $2. It is a family business and have a presence
in most large towns in the North State. I don't know if they are down
your way.
Lowell
From: Guy Buchanan
Sent: Friday, July 17, 2015 6:27 PM
Subject: Kitfox-List: Fewer Problems
Thanks, everyone, for all the help. I've learned a couple of things:
a.. The acrylic windshield I've been flying behind is beautiful and
chemical resistant but would have turned into a bunch of Ginsu knives
had it ever been hit by a bird, or even a small rock coming off the
prop; not good. (Some interesting videos from the motorcycle community.)
I'll definitely be converting to polycarbonate; not scratch resistant,
not fuel resistant, but I least I'll keep my pretty face, as well as
living with a much easier installation. Wish I could find a smoke or
light grey in .093, but perhaps a canopy should always be clear, for max
visibility. It's also much, much, cheaper. ($86 vs
b.. Looks like cylinder 3 may be getting hot water from a water inlet
hose a little too exposed to the nearby exhaust. I'll try some heat
shields.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and sorta grounded
Now a glider pilot, too.
Message 5
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| Subject: | Re: Fewer Problems |
Yeah they only have 1/8", just like Ridout. I can only find the .093 in
clear. Thanks, though.
Guy
On 7/17/2015 6:42 PM, Lowell Fitt wrote:
> Guy,
> Tap Plastics has what they call transparent gray. They will sell a
> 4"X4"X1/8" sample for $2. It is a family business and have a presence
> in most large towns in the North State. I don't know if they are down
> your way.
> Lowell
>
> *From:* Guy Buchanan <mailto:gebuchanan@cox.net>
> *Sent:* Friday, July 17, 2015 6:27 PM
> *To:* Kitfox list <mailto:kitfox-list@matronics.com>
> *Subject:* Kitfox-List: Fewer Problems
>
> Thanks, everyone, for all the help. I've learned a couple of things:
>
> * The acrylic windshield I've been flying behind is beautiful and
> chemical resistant but would have turned into a bunch of Ginsu
> knives had it ever been hit by a bird, or even a small rock coming
> off the prop; not good. (Some interesting videos from the
> motorcycle community.) I'll definitely be converting to
> polycarbonate; not scratch resistant, not fuel resistant, but I
> least I'll keep my pretty face, as well as living with a much
> easier installation. Wish I could find a smoke or light grey in
> .093, but perhaps a canopy should always be clear, for max
> visibility. It's also much, much, cheaper. ($86 vs
> * Looks like cylinder 3 may be getting hot water from a water inlet
> hose a little too exposed to the nearby exhaust. I'll try some
> heat shields.
>
> Guy Buchanan
> Ramona, CA
> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and sorta grounded
> Now a glider pilot, too.
>
>
> *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 *
> http://www.matronics.com/contribution
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