Today's Message Index:
----------------------
1. 05:20 AM - Re: Permanent Gap Seal for a Mk-III (icrashrc)
2. 05:51 AM - Re: Re: Permanent Gap Seal for a Mk-III (Dana Hague)
3. 08:36 AM - Re: spacer for a warp drive (lucien)
4. 12:20 PM - Re: 503 fuel pump weep hole makes a mess (Tom Jones)
5. 03:16 PM - Re: Re: 503 fuel pump weep hole makes a mess (Richard Girard)
6. 03:27 PM - Re: Re: 503 fuel pump weep hole makes a mess (Richard Pike)
7. 04:11 PM - Stahill-Nauga Field Fly Around - July 13th, 14th, 15th (John Bickham)
8. 05:11 PM - Re: MV (Larry Bourne)
9. 08:29 PM - Re: 503 fuel pump weep hole makes a mess (Tom Jones)
10. 08:41 PM - Re: Re: Permanent Gap Seal for a Mk-III (boyd)
11. 09:34 PM - Wings needed (Mark Shimei)
12. 10:13 PM - Re: FireFly fuel tank options? (jerb)
13. 10:50 PM - Re: Re: 503 fuel pump weep hole makes a mess (jerb)
14. 11:02 PM - Re: 503 fuel pump weep hole makes a mess (R. Hankins)
Message 1
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| Subject: | Re: Permanent Gap Seal for a Mk-III |
Boyd,
I would be interested in any info you have on this as well. Thanks
--------
Scott
www.ill-EagleAviation.com
do not archive
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=118712#118712
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| Subject: | Re: Permanent Gap Seal for a Mk-III |
This is sounding interesting for my Ultrastar, too... though the previous
owner flew without any gap seal at all, apparently with no problems (I
haven't flown the plane yet).
-Dana
--
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Most politicians aren't crooks, but the ones that are sure are making the
other 10 percent look bad.
Message 3
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| Subject: | Re: spacer for a warp drive |
Probably a good thing the prop got rid of the seal in that area as it shouldn't
have too much benefit anyway ;).
I only use gap seal along the length of the aileron portion on my FS II, since
that's really where its effective. I don't see any bennie of putting it along
the non-flying part of the tube?
But yes, there's a prop extension on my titan tornado that makes the entire thing
vastly quieter.
My FS II just has a warp drive 3-blade on a C box, mere inches from the trailing
edge of the wing and it's LOUD in the air ;)......
LS
--------
LS
FS II
Read this topic online here:
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| Subject: | Re: 503 fuel pump weep hole makes a mess |
Here's an update on my weeping pulse pump.
I dismanteled both fuel pumps I have tried and both look to be in perfect shape.
I installed each pump, one at at time, and each leaked fuel out the weep hole.
I then rerouted the pulse line so it goes straight up over the carb flanges imediately
from the pulse port on the crankcase. This is about 5 or 6 inches straight
up. This change made no difference in the amount of fuel leaking out the
fuel pump weep hole. Ingot about a half ounce in 7/10 of an hour flight today.
The line is still 21 inches long. I can't figure out a way to mount the
pump closer and still have it higher than the pulse port.
I am still using automotive 30R9 rubber fuel injection hose for the pulse line.
Could the pulse line material...being rubber...have anything to do with the
leaking weep hole?
--------
Tom Jones
Classic IV, Phase one
503, Warp
Ellensburg, WA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=118752#118752
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| Subject: | Re: 503 fuel pump weep hole makes a mess |
Tom, I went into the archives to review the situation before I replied. I
have a few questions.
You said you have about 60 hours on the airplane, is this true for the
engine as well? Was the engine new when when you put it on the aircraft, or
was it rebuilt? Did you do the breakin procedure exactly per the Rotax
Installation Manual (page 21-1)? Have you had any cold seizures (to check,
pull off the exhaust manifold and examine the pistons for signs of displaced
metal)? Have you done a compression check lately?
As I understand the pulse port, it should be just that, a port for a
pressure wave to travel to the fuel pump diaphragm. No fluid should move
through this port at all.
I'll go out on a limb and suggest that your engine has excessive blow by
that is pressurizing the case when the pistons are in the compression/power
part of the stroke before the transfer ports open. I base this on your
description of the residue in your catch can is black in color suggesting it
is contaminated by compression by products.
You're lucky in that Clyde Poser is just on the other side of the Cascades
from you. If nothing anyone has offered here has helped, contact him. He has
a repair station and years of experience with the Rotax two stroke. If
anyone knows where to look for your gremlin, it'll be him.
Keep us all updated and good luck.
Rick
On 6/16/07, Tom Jones <nahsikhs@elltel.net> wrote:
>
>
> Here's an update on my weeping pulse pump.
>
> I dismanteled both fuel pumps I have tried and both look to be in perfect
> shape. I installed each pump, one at at time, and each leaked fuel out the
> weep hole.
>
> I then rerouted the pulse line so it goes straight up over the carb
> flanges imediately from the pulse port on the crankcase. This is about 5 or
> 6 inches straight up. This change made no difference in the amount of fuel
> leaking out the fuel pump weep hole. Ingot about a half ounce in 7/10 of an
> hour flight today. The line is still 21 inches long. I can't figure out a
> way to mount the pump closer and still have it higher than the pulse port.
>
> I am still using automotive 30R9 rubber fuel injection hose for the pulse
> line. Could the pulse line material...being rubber...have anything to do
> with the leaking weep hole?
>
> --------
> Tom Jones
> Classic IV, Phase one
> 503, Warp
> Ellensburg, WA
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=118752#118752
>
>
--
Rick Girard
"Ya'll drop on in"
takes on a whole new meaning
when you live at the airport.
Message 6
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| Subject: | Re: 503 fuel pump weep hole makes a mess |
I would replace the rubber hose with a length of soft aluminum 1/4" fuel
line, use a short length of rubber or urethane fuel line at each end to
attach it to the pulse port and to the fuel pump. If what is coming out of
your weep hole still continues to be black, then you have bigger problems
than just a mess on your firewall ala Rick's reply.
Richard Pike
MKIII N420P (420ldPoops)
----- Original Message -----
From: "Tom Jones" <nahsikhs@elltel.net>
Sent: Saturday, June 16, 2007 3:20 PM
Subject: Kolb-List: Re: 503 fuel pump weep hole makes a mess
>
> Here's an update on my weeping pulse pump.
>
> I dismanteled both fuel pumps I have tried and both look to be in perfect
> shape. I installed each pump, one at at time, and each leaked fuel out
> the weep hole.
>
> I then rerouted the pulse line so it goes straight up over the carb
> flanges imediately from the pulse port on the crankcase. This is about 5
> or 6 inches straight up. This change made no difference in the amount of
> fuel leaking out the fuel pump weep hole. Ingot about a half ounce in
> 7/10 of an hour flight today. The line is still 21 inches long. I can't
> figure out a way to mount the pump closer and still have it higher than
> the pulse port.
>
> I am still using automotive 30R9 rubber fuel injection hose for the pulse
> line. Could the pulse line material...being rubber...have anything to do
> with the leaking weep hole?
>
> --------
> Tom Jones
> Classic IV, Phase one
> 503, Warp
> Ellensburg, WA
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=118752#118752
>
>
>
Message 7
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| Subject: | Stahill-Nauga Field Fly Around - July 13th, 14th, 15th |
Well the first annual Starhill-Nauga Field Fly Around is on. John Hauck & John
Williamson called me yesterday from Homer's Farm to confirm. It is scheduled
for July 13th, July 14th and July 15th. This will be a get together, talk, fly,
and eat.
Friday, July 13th (that don't sound good)- Expect arrivals to start after lunch
on Friday. John Hauck has put in an order for Sandy's red beans with rice,
sausage, and cornbread for supper.
Saturday, July 14th - We'll fix some breakfast (eggs, sausage, bisquits?). Lunch
will be catfish dinners put on by local EAA Chapter 244 at False River Airpark
(HZR) about 10.5 NM west across the Mississippi River from Nauga Field. Dinners
have been about $6.00/plate plus cold drinks. Supper will be wild pig
and fixings, cooked by my landlord back at Nauga Field.
Sunday, July 15th - We'll fix some breakfast again. Anyone who hasn't left by
noon, we'll scrounge some lunch.
This is a pretty tight, friendly community. The families and kids often have gatherings
at the creek. I'm pretty sure most of the community will be around
for the pig roast.
Info on Nauga Field (LS35) -
Don't mean to sound rude or insult anyone. Just want to shoot straight. Nauga
Field is a 1550 ft grass runway with trees and power lines at both ends. Up to
now, John Hauck and I have been the only to use the field. I found it to be
no problem after I practiced for a while. The power lines are actually at or
below the tree lines. The thresoholds are displaced 450 ft from the tree line
and marked with white buckets. That leaves 1100 feet for landing. This is
not a field for a novice or anyone who is used to landing on 2500 foot plus
runways with minimal obstructions. It is no problem for people with experience,
practice, and understand what these Kolbs can really do. It is can be a little
intimidating visually if you have never attempted an approach at a smaller
rural strip. Please don't make this your first attempt.
If you will be attending, please call or email to confirm, so we can get the groceries
right. Best to call on my cell phone - 225-505-4353. Please forgive
me in advance if I don't answer and you have to leave a message. I work shift
work, which means I work when a normal person is sleeping and vice a versa.
I will return your call.
Alright, this is mid-July, in south Louisiana. It will be hot.
We'll have the use of the camp-FBO at Nauga Field. That includes AC, TV, stove,
running water, pool table, couches. Showers and serious sittings will be available
just across the road from the NE end of the runway at the Starhill Volunteer
Fire Station. We'll have some way of shuttling back and forth to the Fire
Station like four wheelers and a trailer so you don't have to walk. Not sure
how many will be coming. The camp has a bunk room that can sleep about four.
A few more can sleep on the couches at the Fire Station. I think there is
room for about 8 to sleep in the AC on a first come, first serve basis. The
rest will tent it. We have two spare bedrooms back at the house for those that
can't go anywhere without their loving wives. [Wink]
I'll have to work on the fuel supply. I have two 5 gallon jugs dedicated to the
plane. There is a Chevron gas station within 5 minutes. Self service 100LL
is available at False River (HZR). I'll get you gas for your return trips.
Maybe we can start managing that Saturday evening so there won't be a mad rush
Sunday morning.
Hope to see you there! Let me know if you are coming.
Confirmed so far:
John Hauck
John Williamson
--------
Thanks too much,
John Bickham
Mark III-C
"Using my Repairman Certificate"
St. Francisville, LA
Do Not Archive
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Message 8
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Sorry folks. Thought I was replying direct to Pat. Didn't even look.
Sending from my shiny new wireless modem (works Very Well, so far) from a
campground in Lillooet, B.C., Canada, still headed north.....and *really*
hoping the $#%^ rain will stop sometime. Lar.
Do not Archive.
Larry Bourne
Santa Fe, NM
www.gogittum.com
----- Original Message -----
From: "Larry Bourne" <gogittum@msn.com>
Sent: Friday, June 15, 2007 8:19 PM
Subject: Re: Kolb-List: MV
>
> Snail.........mail.......whazzat ?? I was starting to think I wasn't
> being spoke to. :-) Lar.
>
> Larry Bourne
> Santa Fe, NM
> www.gogittum.com
>
> ----- Original Message -----
> From: "pat ladd" <pj.ladd@btinternet.com>
> To: <kolb-list@matronics.com>
> Sent: Friday, June 15, 2007 2:16 AM
> Subject: Re: Kolb-List: MV
>
>
>>
>> Hi Lar,
>>
>> there are some pics on the way to you. Snail mail. I also have some of
>> the cottage in Devon I thought you might like which I will send .. Emjoy
>>
>> Cheers
>>
>> Pat
>>
>>
>>
>>
>>
>
>
>
Message 9
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| Subject: | Re: 503 fuel pump weep hole makes a mess |
Okay to clarify some more. The engine now has 14 flight hours on it. It was broken
in according to the rotax manual. Total engine run time including break
in, prop adjustment, taxi testing etc. is about 20 hours. The fuel pump leaked
from the beginning, that is why I put a new one on. The new pump leaks too.
No cold seisures. Compression is good. I think the leaked fuel is black because
it is the condensate rotax speaks of and thus requires the weep hole in
aircraft fuel pumps. I think it is black because it is mostly oil. I think the
fuel/oil is able to work its way up to the pump because of the weep hole.
I will replace the rubber pulse line with a plastic one to see if it helps.
--------
Tom Jones
Classic IV, Phase one
503, Warp
Ellensburg, WA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=118797#118797
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| Subject: | Re: Permanent Gap Seal for a Mk-III |
Boyd,
I would be interested in any info you have on this as well. Thanks
--------
Scott
www.ill-EagleAviation.com
do not archive
>>>>>>>>>>>>>>>>>>>>>>>>>>
I am surprised on how many request I have had for info on my gap seal
Check it out.
www.brigham.net/~byoung/gapseal.html
if you have any questions please let me know....
boyd
Message 11
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I am still looking for a set of Ultrastar or firefly wings. near FL
E-me mshimei@bellsouth.net
It is a better subject than seafoam green.
Message 12
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| Subject: | Re: FireFly fuel tank options? |
Hi Jon,
Sorry to hear you don't have time to fly.
Just curious, how far is it to your local airport - miles and flying time?
Do you have the full enclosure option - that is the wind screen that
wraps side-side, from nose cone to the leading edge of the wing? We
never installed the rear clear vinyl part as were in Texas and soft
so if its below 50 its to cold to fly any how.
We used to have a FireFly with full wind screen so I got good idea of
it flying limits on 5 gallons.
If they only want $20 for that new 6 gallon tank I would grab one in
a heart beat - cheapest extra gallon you'll get.
Do a top pick up on the tank not punched in the bottom, they leak
over time. In the top put a 1/4"OD tube held in place with a fitting
in the top of the tank to seal and secure the 1/4" copper or alum.
tubing with it extending down to within a 1/2" of the bottom - make
sure the tube can't slide up or down.
In my CGS Hawk I used a 10 gallon Challenger tank. This tank has a
female threaded port on the top for a pick up - their normal
configuration is a single brass fitting which screws into the port -
I made a alum. 5/8" dia. plug, drilled 3 clearance holes in it, (2)
for 1/4" tubes and (1) for 1/8". In the plug I mounted (T-88
epoxied) 1 short 1/4" tube short one for a vent, another 1/4"
extended to with about 1/2" of the bottom of the tank, and an 1/8"
dia tube down to about the bottom of the main pickup for primer
pickup. I tried using 1/8" alum. tube first, found that it is not
very strong. Managed to break it off right away just trying to
remove a temp. primer line hose, I was happy it happened when it
did. Had to convert to the backup using 1/8" Nylaflow tubing. It's
the stuff used for brake lines sold by Aircraft Spruce and is
supposed to be suitable for fuel line. So far this has worked
great. You might be able to accomplish the same thing with a flange
glued to the top of the tank using the proper material - Jim Baker
probably can come up with glue that will stick to polyethylene tank.
Ya, we used to have same problem as you not enough fuel to make it
round trip and sweating fuel takes fly out of it. My partner had a
2-1/2 gal. gas can that would fit down behind the seat if I recall
right. We thought a 7-1/2 gallon tank would have been perfect but
six is better than five. He also rigged up a way to carry another
2-1/2 above the normal tank if needed. With the enclosure we would
cruise between 65-70, 60 if we were not pushing it. While there has
been some debate about this our Fly had a sweet spot - kind of like
getting on step with floats where the nose would drop a little and it
would pick up speed allowing you to hold the speed at lower
RPM. Both of us have experienced it. He flew it more than I did.
Well I have rambled on enough,
jerb
Message 13
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| Subject: | Re: 503 fuel pump weep hole makes a mess |
What kind of tubing were you using, tubing made for vacuum
applications or black automotive type fuel line?
You should be using tubing for vacuum application, example what they
call pulse tubing sold by Lockwood and CPS, it has thicker walls so
as not to soften the vacuum impulses. The automotive type fuel line
is not good as it too can compress under the pulses and soften the
vacuum pulses. It also can react to the 2-stroke oil and fuel
causing its layers to separate. These then can compress and reduce
the strength of the vacuum pulses - no pulses equal no or reduced
fuel flow. A Pennzoil rep at a past safety seminar acknowledge the
2-stroke oil together with the fuel breaks down automotive type fuel
lines which is the reason you see a different type material used for
fuel lines on 2-stroke marine fuel tanks.
jerb
At 10:29 PM 6/16/2007, you wrote:
>snip...
>I will replace the rubber pulse line with a plastic one to see if it helps.
>
>--------
>Tom Jones
>Classic IV, Phase one
>503, Warp
>Ellensburg, WA
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p=118797#118797
>
>
Message 14
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| Subject: | Re: 503 fuel pump weep hole makes a mess |
> I think the leaked fuel is black because it is the condensate rotax speaks of
and thus requires the weep hole in aircraft fuel pumps. I think it is black because
it is mostly oil. I think the fuel/oil is able to work its way up to the
pump because of the weep hole.
>
Tom,
As of today I have 423.6 hrs on my 503 with the original pulse pump. My plane
is in dire need of a bath. Every drop of oil and fuel that has touched the fabric
in the last few months shows up as a dark spot that has collected bugs, dust
and grime. The weep hole on my fuel pump is clean as the wind driven snow.
I have never seen anthing come out of that weep hole and my fuel pump is mounted
a good six inches below the engine. Don't be too quick to think it is normal.
Do you know someone who is running a similar pump that is not oozing.
Could you talk them into letting you install their pump on your plane for an hour
or so? This would sure make it easy to tell if it is simply the pump or something
with the hose or engine. If you bribe them with some cold suds, you
might even convince them to actually swap pumps with you. This would really clear
things up in a hurry.
Hang in there, you will find the problem.
--------
Roger in Oregon
1992 KXP 503
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