Today's Message Index:
----------------------
1. 05:15 AM - Re: Northstar F210 fuel flow gauge transducer (Catz631@aol.com)
2. 07:27 AM - Old Lexan wind shield material (Paul Morel)
3. 07:45 AM - Re: Old Lexan wind shield material (Larry Huntley)
4. 08:14 AM - Re: Old Lexan wind shield material (PMorel)
5. 09:42 AM - Re: Re: Old Lexan wind shield material (Lowell Fitt)
6. 10:10 AM - Re: Re: Old Lexan wind shield material (Larry Huntley)
7. 11:46 AM - Re: Northstar F210 fuel flow gauge transducer (Lynn Matteson)
8. 11:47 AM - Re: Old Lexan wind shield material (Lynn Matteson)
9. 04:35 PM - starter wire breaking (jerry evans)
10. 04:39 PM - Wanted a door frame for a kitfox speedster (jcpalmer)
11. 06:22 PM - Re: starter wire breaking (Tom Jones)
12. 06:43 PM - Re: starter wire breaking (Paul Franz)
Message 1
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| Subject: | Re: Northstar F210 fuel flow gauge transducer |
I had a nice flight in my Kitfox yesterday (sans fuel flow gauge). In the
afternoon as I was I was winding down from my projects I decided to have a
nice Amber ale at my work bench. As I was doing so I casually looked up and
saw that bad transducer sitting on the shelf in front of me. It wasn't any
good anymore so curiosity got the best of me. --disasemble-disasemble !
I took out my redneck opener (5 LB sledge) and whacked it a couple of
times. It didn't even crack. This is a tough mother! I grabbed a hacksaw out of
the toolbox and cut the thing in half. It is made out of a solid piece of
epoxy or some other kind of plastic stuff with imbedded wires and the tube and
rotor. As luck would have it, I cut just above one of the rotor hinge
stators so I was able to remove the rotor with a pair of needle nose pliers. I
had not damaged a thing when I cut the unit in half. I took out my magnifying
glass and examined the rotor. (which looks like a worm gear about 3/16 inch
long) I found the problem. One side of the rotor was shiny and new the
other was well worn to the point of trailing some plastic over the edge of the
rotor where it was rubbing the wall of the tube the fuel goes thru. I suspect
either a badly mfg rotor, bad alignment or wobbling rotor.
It wasn't trash that caused the problem. This thing is so small and
precision and PLASTIC ! It's pretty amazing that it worked at all. The rotor was
well stuck in the tube. It wouldn't move with high air pressure from my
compressor (last resort) BUT it did not impede the fuel flow to my 912. The
indications on the instrument when it failed was of course 0 to 0.3 fuel flow.
Maybe my next transducer will work longer.
Dick Maddux
Fox 4
Milton,Fl
Message 2
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| Subject: | Old Lexan wind shield material |
Just a note to let everyone know the problem I had with my lexan wind
shield. I just finish my Speedster last month and the lexan I installed
was .90 but came with the kit back in the early to mid 90's. Cutting
and fitting was pretty straight forward and had no problems with the
installation. Nylon cargo straps is a good way to fit the lexan and the
compound curves was a big concern but it all went together nicely.
About a week or two before I made my first flight, I got all kinds of
crazing (sp) on the lexan where the compound curves are in each of the
upper corners. I would have expected this after a few years and once
the UV rays got to it, but not right away and just after peeling the
backing off just months before.
My advice to anyone still in the building stages that still has not
installed an aged lexan sheet may want to consider getting a fresh or
new sheet of lexan to avoid this.
Paul Morel
912 Speedster
Locust Grove, GA
Message 3
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| Subject: | Re: Old Lexan wind shield material |
Paul,
I think mine was Rhino polycarbonate sent in the kit in 92. Didn't fly
it til 98. Relieved stress in those corners w/ a heat gun when I
installed it. I also cut the corner cutouts as large as I could cut them
and still be covered by the fairings. Flew it for 10 yrs 400+ hrs.
Crazed some a couple of years ago and I replaced it mostly because of
scratches and hazing. Did you heat the stressed area? Larry
----- Original Message -----
From: Paul Morel
To: kitfox-list@matronics.com
Sent: Sunday, August 30, 2009 10:33 AM
Subject: Kitfox-List: Old Lexan wind shield material
Just a note to let everyone know the problem I had with my lexan wind
shield. I just finish my Speedster last month and the lexan I installed
was .90 but came with the kit back in the early to mid 90's. Cutting
and fitting was pretty straight forward and had no problems with the
installation. Nylon cargo straps is a good way to fit the lexan and the
compound curves was a big concern but it all went together nicely.
About a week or two before I made my first flight, I got all kinds of
crazing (sp) on the lexan where the compound curves are in each of the
upper corners. I would have expected this after a few years and once
the UV rays got to it, but not right away and just after peeling the
backing off just months before.
My advice to anyone still in the building stages that still has not
installed an aged lexan sheet may want to consider getting a fresh or
new sheet of lexan to avoid this.
Paul Morel
912 Speedster
Locust Grove, GA
-------------------------------------------------------------------------
-----
Checked by AVG - www.avg.com
08/30/09 06:36:00
Message 4
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| Subject: | Re: Old Lexan wind shield material |
Larry
No, I didn't heat the corners, and looking back, that is something I should have
done. My kit was also purchased in 92' but not completed until 09'. 17 years
is a long time for lexan, hoses, bungee cords, and other plastic items to be
sitting idle. I'm not saying that these items aren't perfectly usable, but
just keep that in the back of your head as you're building.
Paul
912 Speedster
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=260474#260474
Message 5
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| Subject: | Re: Old Lexan wind shield material |
Polycarbonate sheets come in .060, .093 and .118 thickness for our purposes.
As it has been mentioned many times the higher VNE of the Speedster has to
do with the thickness of the windshield material and the lower tendency to
bend inward at high speeds. As I recall, the early thickness for the
Speedster was the .118 (1/8"). It was very difficult to install and crazed
readily. Then came the .093 for the Speedster and the long wing IV stayed
at the .060. Even the .060 will craze in time. If you look at the minimum
radius in the spec. sheet ( radius equals at least 100 times the thickness).
That means that for the original 1/8" speedster material the minimum bend
radius is a tad over 12 inches. For the .093 a bit over nine inches and the
..060 six inches. The following link is for the GE version of Polycarbonate.
Message 6
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| Subject: | Re: Old Lexan wind shield material |
Sounds like good advice. A lot of materials ( like the shock cords) have a
definite shelf life. Good luck with your Fox. It is a wonderful bird.
Larry
----- Original Message -----
From: "PMorel" <pmorel@bellsouth.net>
Sent: Sunday, August 30, 2009 11:11 AM
Subject: Kitfox-List: Re: Old Lexan wind shield material
>
> Larry
>
> No, I didn't heat the corners, and looking back, that is something I
> should have done. My kit was also purchased in 92' but not completed
> until 09'. 17 years is a long time for lexan, hoses, bungee cords, and
> other plastic items to be sitting idle. I'm not saying that these items
> aren't perfectly usable, but just keep that in the back of your head as
> you're building.
>
> Paul
> 912 Speedster
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=260474#260474
>
>
--------------------------------------------------------------------------------
Checked by AVG - www.avg.com
06:36:00
Message 7
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| Subject: | Re: Northstar F210 fuel flow gauge transducer |
I just hope they don't want the old unit back to hold up your warranty.
Geez, Dick, you're a mean drunk! : )
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062, 744.1 hrs
Sensenich 62"x46" Wood prop
Electroair direct-fire ignition system
Rotec TBI-40 injection
Status: flying
do not archive
On Aug 30, 2009, at 8:01 AM, Catz631@aol.com wrote:
> I had a nice flight in my Kitfox yesterday (sans fuel flow gauge).
> In the afternoon as I was I was winding down from my projects I
> decided to have a nice Amber ale at my work bench. As I was doing
> so I casually looked up and saw that bad transducer sitting on the
> shelf in front of me. It wasn't any good anymore so curiosity got
> the best of me. --disasemble-disasemble !
> I took out my redneck opener (5 LB sledge) and whacked it a couple
> of times. It didn't even crack. This is a tough mother! I grabbed a
> hacksaw out of the toolbox and cut the thing in half. It is made
> out of a solid piece of epoxy or some other kind of plastic stuff
> with imbedded wires and the tube and rotor. As luck would have it,
> I cut just above one of the rotor hinge stators so I was able to
> remove the rotor with a pair of needle nose pliers. I had not
> damaged a thing when I cut the unit in half. I took out my
> magnifying glass and examined the rotor. (which looks like a worm
> gear about 3/16 inch long) I found the problem. One side of the
> rotor was shiny and new the other was well worn to the point of
> trailing some plastic over the edge of the rotor where it was
> rubbing the wall of the tube the fuel goes thru. I suspect either a
> badly mfg rotor, bad alignment or wobbling rotor.
> It wasn't trash that caused the problem. This thing is so small
> and precision and PLASTIC ! It's pretty amazing that it worked at
> all. The rotor was well stuck in the tube. It wouldn't move with
> high air pressure from my compressor (last resort) BUT it did not
> impede the fuel flow to my 912. The indications on the instrument
> when it failed was of course 0 to 0.3 fuel flow.
> Maybe my next transducer will work longer.
> Dick Maddux
> Fox 4
> Milton,Fl
>
> www.matronics.com/contribution _-
> ===========================================================
Message 8
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| Subject: | Re: Old Lexan wind shield material |
Or bite the bullet and get a pre-formed windshield from LP
Aeroplastics, or through John McBean. The thicker material used in
the preformed units will give you peace of mind when you're headed
toward a flock of seagulls.
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062, 744.1 hrs
Sensenich 62"x46" Wood prop
Electroair direct-fire ignition system
Rotec TBI-40 injection
Status: flying
On Aug 30, 2009, at 10:33 AM, Paul Morel wrote:
> Just a note to let everyone know the problem I had with my lexan
> wind shield. I just finish my Speedster last month and the lexan I
> installed was .90 but came with the kit back in the early to mid
> 90's. Cutting and fitting was pretty straight forward and had no
> problems with the installation. Nylon cargo straps is a good way
> to fit the lexan and the compound curves was a big concern but it
> all went together nicely.
>
> About a week or two before I made my first flight, I got all kinds
> of crazing (sp) on the lexan where the compound curves are in each
> of the upper corners. I would have expected this after a few years
> and once the UV rays got to it, but not right away and just after
> peeling the backing off just months before.
>
> My advice to anyone still in the building stages that still has not
> installed an aged lexan sheet may want to consider getting a fresh
> or new sheet of lexan to avoid this.
>
> Paul Morel
> 912 Speedster
> Locust Grove, GA
> ============================================================ _-
> ============================================================ _-
> contribution_-
> ===========================================================
Message 9
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| Subject: | starter wire breaking |
This is the second time my starter positive wire has broke at the connectio
n on the starter bolt, has anyone had this happen to them? I'm thinking of
adding a zip tie around the wire and the starter to stop the vibration that
-makes the wire connector to break off just before the nut that tightens
it on the starter,- 582 Grey head,-any input would be great- thanks,
- Jerry-
Jerry Evans
KitfoxII
Magalia Calif.
N582'er'
kitfox 555
Message 10
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| Subject: | Wanted a door frame for a kitfox speedster |
Anyone replace there doors with the bubble lexan and want to sell there old left
side tube door frame? call 315-271-9735 or email jpalmer6389@twcny.rr.com
Thanks John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=260527#260527
Message 11
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| Subject: | Re: starter wire breaking |
Jerry, is the wire the stuff that came with the original Kit? The starter wire
that came with my kit was way too stiff. It was about 10 or 12 strands of thick
copper. Mine broke at the same spot as yours about a week after the first
flight. I replaced it with some marine wire from the boat shop. It is lots
and lots of fine copper strands and very flexible. Looks about like welding lead
but has a red jacket. 75 hours now and no more problems.
--------
Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=260551#260551
Message 12
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| Subject: | Re: starter wire breaking |
On Sun, August 30, 2009 4:31 pm, jerry evans wrote:
> This is the second time my starter positive wire has broke at the connection
on the
> starter bolt, has anyone had this happen to them? I'm thinking of adding a zip
tie
> around the wire and the starter to stop the vibration thatmakes the wire connector
to
> break off just before the nut that tightens it on the starter.
That will probably do it. If you can restrain the vibrating cable at half the
unrestrained length that will roughly double the natural frequency of vibration
as
well as restrict the amplitude. Both effects will likely extend the connector life
considerably if not totally eliminate the problem. On the downside, it might just
break in a different place next time. The restraint needs to be tight and the clamping
stress spread out enough to prevent crushing and insulation damage.
--
Paul Franz
425.440.9505 (O)
425.241.1618 (C)
"Freedom had been hunted round the globe; reason was considered as
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