Today's Message Index:
----------------------
1. 01:51 AM - Re: rotax pulse pump leaking weep hole (dwight purdy)
2. 06:06 AM - Re: Re: KitFox 2.fuel level problem,cant see fuel in tanks (Noel Loveys)
3. 06:59 AM - Re: rotax pulse pump leaking weep hole (Tom Jones)
4. 09:38 AM - Re: rotax pulse pump leaking weep hole (Noel Loveys)
5. 02:04 PM - Re: KitFox 2.fuel level problem,cant see fuel in tanks (wingnut)
6. 06:05 PM - Impulse Line (Jim Crowder)
7. 06:20 PM - Re: Impulse Line (Jim_and_Lucy Chuk)
8. 08:28 PM - Re: rotax pulse pump leaking weep hole (369PL)
9. 11:04 PM - Re: Impulse Line (Jim Crowder)
Message 1
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| Subject: | Re: rotax pulse pump leaking weep hole |
I think I can help. I had the exact the same problem when I switched from a
532 to a 503. The problem is too long of a pulse line. The port on the 532
and 582 is on the mag end close to the fire wall. On the 503 it is on the
pto end. I moved the pump to the front of the engine mount (still
horizontal) and no more weeping in 460 hours. Someone in the Rotax repair
business suggested this to me.
Dwight Purdy
Model ll
Indiana
At 12:31 PM 6/16/2007 -0700, you wrote:
>
>The pulse pump on my 503 rotax leaks fuel out the weep hole. It is
>installed according to the kitfox manual. It is mounted high on the fire
>wall in a horizontal position with the weep hole on the bottom. I tried a
>new pump and rerouting the pulse line up over the carb flanges but it did
>not even slow the amount of fuel leaking. I am using 30R9 rubber fuel
>injection hose for the pulse line. It l;eaks about 1/2 to 1 ounce per
>hour of flight.
>
>I asked this question on the Kolb list. They seem to think something is
>amiss. They don't seem to have this problem Some think the fuel pump
>diaphram is leaking. I bought a new pump but it does the same. Both
>pumps I have tried will hold a vacum in the pulse chamber. I am out of
>ideas on how to fix this.
>
>--------
>Tom Jones
>Classic IV, Phase one
>503, Warp
>Ellensburg, WA
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p=118753#118753
>
>
>--
>12:50 PM
--
Message 2
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| Subject: | Re: KitFox 2.fuel level problem,cant see fuel in tanks |
Luis:
Don't you do a flight plan and navigation before every flight that takes
you
cross country? I'm hardly ever a mile off course or a half a gallon off
on
my calculations. That's not to say a timer isn't a handy item to have
to
log airtime.
Regarding to seeing fuel in the tanks... I have the same problem. its
very
hard to see the levels in the sight tubes when I'm in the seat. I was
considering trying a couple of bicycle mirrors to try to get a better
angle
on the sight tubes.
Noel Loveys, RPP, AME intern
Campbellton, Newfoundland,
Canada
Kitfox Mod III-A, 582, B box, Ivo IFA
Aerocet 1100s
<mailto:noelloveys@yahoo.ca> noelloveys@yahoo.ca
Do not archive
> -----Original Message-----
> From: owner-kitfox-list-server@matronics.com
> [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of wingnut
> Sent: Friday, June 15, 2007 11:05 AM
> To: kitfox-list@matronics.com
> Subject: Kitfox-List: Re: KitFox 2.fuel level problem,cant
> see fuel in tanks
>
>
>
>
> > will I have to use a timer?
>
>
> Do your wing tanks not have the sight tubes or are they just
> hard to see? I find mine are difficult to see in flight. It
> helps if I rock the wings to slosh things around a little.
>
> I still use a timer though. I like to compare my actual fuel
> burn against what I expected throughout the trip. That way, I
> know way ahead of time if that 20knt head wind is going to
> add an extra stop.
>
> --------
> Luis Rodriguez
> Model IV 1200
> Rotax 912UL
> Flying Weekly
> Laurens, SC (34A)
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=118581#118581
>
>
>
>
>
>
>
>
Message 3
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| Subject: | Re: rotax pulse pump leaking weep hole |
> I moved the pump to the front of the engine mount (still
> horizontal) and no more weeping in 460 hours.
Thanks Dwight, that makes sense. I'll make the change and test it out when the
wind dies down in a couple days.
--------
Tom Jones
Classic IV, Phase one
503, Warp
Ellensburg, WA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=118868#118868
Message 4
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| Subject: | rotax pulse pump leaking weep hole |
The question I was getting ready to ask was along the same lines.
I was going to ask if the gas was coming form the fuel lines or up the
impulse line and how long the impulse line is. Heavy clear tubing is
recommended for impulse line so you can see what is going on in it.
The shorter the impulse line the better but of course vibration and heat
have to be taken into consideration. Some where it is written that the
pumps should be mounted horizontally with the impulse line entering from
the
bottom so any excess gas/oil form the base of the engine will drain out
of
the pump.
Hope this helps
Noel Loveys, RPP, AME intern
Campbellton, Newfoundland,
Canada
Kitfox Mod III-A, 582, B box, Ivo IFA
Aerocet 1100s
<mailto:noelloveys@yahoo.ca> noelloveys@yahoo.ca
Do not archive
> -----Original Message-----
> From: owner-kitfox-list-server@matronics.com
> [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of
> dwight purdy
> Sent: Sunday, June 17, 2007 6:20 AM
> To: kitfox-list@matronics.com
> Subject: Re: Kitfox-List: rotax pulse pump leaking weep hole
>
>
>
> I think I can help. I had the exact the same problem when I
> switched from a
> 532 to a 503. The problem is too long of a pulse line. The
> port on the 532
> and 582 is on the mag end close to the fire wall. On the 503
> it is on the
> pto end. I moved the pump to the front of the engine mount (still
> horizontal) and no more weeping in 460 hours. Someone in the
> Rotax repair
> business suggested this to me.
>
>
> Dwight Purdy
> Model ll
> Indiana
>
>
> At 12:31 PM 6/16/2007 -0700, you wrote:
>
> >
> >The pulse pump on my 503 rotax leaks fuel out the weep hole. It is
> >installed according to the kitfox manual. It is mounted
> high on the fire
> >wall in a horizontal position with the weep hole on the
> bottom. I tried a
> >new pump and rerouting the pulse line up over the carb
> flanges but it did
> >not even slow the amount of fuel leaking. I am using 30R9
> rubber fuel
> >injection hose for the pulse line. It l;eaks about 1/2 to 1
> ounce per
> >hour of flight.
> >
> >I asked this question on the Kolb list. They seem to think
> something is
> >amiss. They don't seem to have this problem Some think the
> fuel pump
> >diaphram is leaking. I bought a new pump but it does the
> same. Both
> >pumps I have tried will hold a vacum in the pulse chamber.
> I am out of
> >ideas on how to fix this.
> >
> >--------
> >Tom Jones
> >Classic IV, Phase one
> >503, Warp
> >Ellensburg, WA
> >
> >
> >
> >
> >Read this topic online here:
> >
> >http://forums.matronics.com/viewtopic.php?p=118753#118753
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >--
> >12:50 PM
>
>
> --
>
>
>
>
>
>
>
>
Message 5
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| Subject: | Re: KitFox 2.fuel level problem,cant see fuel in tanks |
> Don't you do a flight plan and navigation before every flight that takes you
cross country? I'm hardly ever a mile off course or a half a gallon off on my
calculations.
Yes but you never know if you're going to encounter higher head winds than you
expected. With a long cross country in a 95 knt airplane, a little bit of extra
head wind can make a huge difference in your range. Cross checking my actual
position and actual fuel level against the flight plan was part of my training.
--------
Luis Rodriguez
Model IV 1200
Rotax 912UL
Flying Weekly
Laurens, SC (34A)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=118974#118974
Message 6
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Hey you'al, what is an impulse line? It is a term I have not encountered
before. When I see something new to me, it is a chance to learn. I have
installed a lot of fuel pumps on aircraft, motor homes, etc., but none had
such a line that I am aware of.
>You wrote:
>Heavy clear tubing is recommended for impulse line so you can see what is
going on in it.
Jim Crowder
S5/3300 Jabiru (Engine swap in process)
North Front Range of Colorado
Message 7
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The impulse line goes from the crankcase to the Mikuni fuel pump on a 2
stroke engine. Perhaps some fourstrokes use one, but I don't know about
that for sure.
Jim Chuk
Avid Mk IV
>From: "Jim Crowder" <jimlc@att.net>
>To: "Kitfox List" <kitfox-list@matronics.com>
>Subject: Kitfox-List: Impulse Line
>Date: Sun, 17 Jun 2007 19:03:58 -0600
>
>
>Hey you'al, what is an impulse line? It is a term I have not encountered
>before. When I see something new to me, it is a chance to learn. I have
>installed a lot of fuel pumps on aircraft, motor homes, etc., but none had
>such a line that I am aware of.
>
>
> >You wrote:
> >Heavy clear tubing is recommended for impulse line so you can see what is
>going on in it.
>
>Jim Crowder
>S5/3300 Jabiru (Engine swap in process)
>North Front Range of Colorado
>
>
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Message 8
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| Subject: | Re: rotax pulse pump leaking weep hole |
I also had the same problem on a 503 I used to fly on a n3pup. The pule line was
to long. Their is a specification of no longer than 12". If memory serves me
well.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=119048#119048
Message 9
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What purpose does it serve? It seems a good way to get fuel into the
crankcase, something I would think was very undesirable. Please understand
I am sure it does serve a purpose, it just is not apparent to me.
Jim Crowder
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Jim_and_Lucy
Chuk
Sent: Sunday, June 17, 2007 7:18 PM
Subject: RE: Kitfox-List: Impulse Line
The impulse line goes from the crankcase to the Mikuni fuel pump on a 2
stroke engine. Perhaps some fourstrokes use one, but I don't know about
that for sure.
Jim Chuk
Avid Mk IV
>From: "Jim Crowder" <jimlc@att.net>
>To: "Kitfox List" <kitfox-list@matronics.com>
>Subject: Kitfox-List: Impulse Line
>Date: Sun, 17 Jun 2007 19:03:58 -0600
>
>
>Hey you'al, what is an impulse line? It is a term I have not encountered
>before. When I see something new to me, it is a chance to learn. I have
>installed a lot of fuel pumps on aircraft, motor homes, etc., but none had
>such a line that I am aware of.
>
>
> >You wrote:
> >Heavy clear tubing is recommended for impulse line so you can see what is
>going on in it.
>
>Jim Crowder
>S5/3300 Jabiru (Engine swap in process)
>North Front Range of Colorado
>
>
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