Today's Message Index:
----------------------
1. 09:21 AM - Re: Re: Missing Rotax 912S - A concern? (Randy Daughenbaugh)
2. 10:10 AM - Re: Re: Missing Rotax 912S - A concern? (JC Propeller Design)
3. 10:22 AM - Re: Missing Rotax 912S - A concern? (Av8r3400)
4. 03:25 PM - spacer at rear of cockpit roof- info needed (Dave G)
5. 05:25 PM - Re: spacer at rear of cockpit roof- info needed (Lowell Fitt)
6. 06:05 PM - Re: spacer at rear of cockpit roof- info needed (Dave G)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Missing Rotax 912S - A concern? |
Thanks John and Clint.
I haven't changed prop pitch in nearly 3 years. I should have mentioned
that I took the fuel line off where it was feeding the fuel pump and had a
fuel flow of nearly 20 gpm or about 5 times my normal fuel consumption.
I will try to drop the nose to see what happens. A related observation: At
one point I flew for a bit with it missing and at full throttle. It runs,
but with much reduced power. I should have noted the exhaust temperatures.
I have a lot of visitors coming soon who want rides. I am not giving any
rides until I get this sorted out.
Randy
912S is there, but still missing!
_____
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of KITFOXZ@aol.com
Sent: Monday, June 29, 2009 3:00 PM
Subject: Re: Kitfox-List: Re: Missing Rotax 912S - A concern?
Hello Randy,
I was doubting your loose spark plug connectors were the problem when I read
it because to actually cause a repeatable miss on that cylinder, both
connectors would have to be loose as a goose and arching enough to affect
low or no spark at the same exact time on both plugs. I am not saying a
loose connector is to be ignored at all, just that by itself, not likely to
cause a constant miss-fire at a certain load and altitude.
I don't yet think you have a fuel pump problem either. While a fuel pump
problem of not delivering full volume and full pressure would manifest
itself at high demand times, a mechanical diaphragm type fuel pump usually
does not fail in that way. They usually leak through the diaphragm and
failure is pretty bad and it won't deliver fuel at much of a pressure or
volume and would be a constant problem at many power settings.
I would like to see you de-pitch your prop a little and repeat your tests.
(I wonder what RPM you are turning when the "miss" occurs) Also, I would
like to hear that you have totally scrutinized your carb mounting boots to
be sure they are not torn or leaking air in any way.
You say the problem goes away when you throttle back a little. Try leaving
the throttle put but lower the nose to decrease loading. Does that solve
the miss?
As for fuel, be sure every path is clear of dirt and If the above test of
lower pitch on the prop doesn't solve it and your carb mounts are squared
away, try en richening your carb needles one level.
John
In a message dated 6/29/2009 2:23:09 P.M. Eastern Daylight Time,
rjdaugh@rapidnet.com writes:
Yeah, I know I am a good straight man.
The $55 spark plug caps didn't solve the missing problem. They are not
loose now, but....
What is a good way to check the fuel pump? Remember it only does this at
altitude and at full throttle.
I am also considering that it may be a problem with winter blend gas. The
change over date here is 1 May, and I may have had some winter gas in it.
Randy
_____
A Good Credit Score is 700 or Above. See
p://www.freecreditreport.com/pm/default.aspx?sc=668072%26hmpgID=62%26bcd=Jun
estepsfooterNO62> yours in just 2 easy steps!
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Missing Rotax 912S - A concern? |
Have flown 2 airplane with valve sticking, both O-200 engines but
diffrent aircraft, all of a sudden it loose power and start to shake,
then it go away.
Jan
----- Original Message -----
From: Randy Daughenbaugh
To: kitfox-list@matronics.com
Sent: Tuesday, June 30, 2009 6:17 PM
Subject: RE: Kitfox-List: Re: Missing Rotax 912S - A concern?
Thanks John and Clint.
I haven't changed prop pitch in nearly 3 years. I should have
mentioned that I took the fuel line off where it was feeding the fuel
pump and had a fuel flow of nearly 20 gpm or about 5 times my normal
fuel consumption.
I will try to drop the nose to see what happens. A related
observation: At one point I flew for a bit with it missing and at full
throttle. It runs, but with much reduced power. I should have noted
the exhaust temperatures.
I have a lot of visitors coming soon who want rides. I am not giving
any rides until I get this sorted out.
Randy
912S is there, but still missing!
-------------------------------------------------------------------------
-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of
KITFOXZ@aol.com
Sent: Monday, June 29, 2009 3:00 PM
To: kitfox-list@matronics.com
Subject: Re: Kitfox-List: Re: Missing Rotax 912S - A concern?
Hello Randy,
I was doubting your loose spark plug connectors were the problem when
I read it because to actually cause a repeatable miss on that cylinder,
both connectors would have to be loose as a goose and arching enough to
affect low or no spark at the same exact time on both plugs. I am not
saying a loose connector is to be ignored at all, just that by itself,
not likely to cause a constant miss-fire at a certain load and altitude.
I don't yet think you have a fuel pump problem either. While a fuel
pump problem of not delivering full volume and full pressure would
manifest itself at high demand times, a mechanical diaphragm type fuel
pump usually does not fail in that way. They usually leak through the
diaphragm and failure is pretty bad and it won't deliver fuel at much of
a pressure or volume and would be a constant problem at many power
settings.
I would like to see you de-pitch your prop a little and repeat your
tests. (I wonder what RPM you are turning when the "miss" occurs) Also,
I would like to hear that you have totally scrutinized your carb
mounting boots to be sure they are not torn or leaking air in any way.
You say the problem goes away when you throttle back a little. Try
leaving the throttle put but lower the nose to decrease loading. Does
that solve the miss?
As for fuel, be sure every path is clear of dirt and If the above test
of lower pitch on the prop doesn't solve it and your carb mounts are
squared away, try en richening your carb needles one level.
John
In a message dated 6/29/2009 2:23:09 P.M. Eastern Daylight Time,
rjdaugh@rapidnet.com writes:
Yeah, I know I am a good straight man.
The $55 spark plug caps didn't solve the missing problem. They are
not
loose now, but....
What is a good way to check the fuel pump? Remember it only does
this at
altitude and at full throttle.
I am also considering that it may be a problem with winter blend
gas. The
change over date here is 1 May, and I may have had some winter gas
in it.
Randy
-------------------------------------------------------------------------
-----
A Good Credit Score is 700 or Above. See yours in just 2 easy steps!
- The Kitfox-List Email Forum --->
http://www.matronics.com/Navigator?Kitfox-List - MATRONICS
WEB FORUMS - - List Contribution Web Site -
-Matt Dralle, List Admin.
__________ Information from ESET NOD32 Antivirus, version of virus
signature database 4198 (20090629) __________
The message was checked by ESET NOD32 Antivirus.
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Missing Rotax 912S - A concern? |
I'm a nooby so I know very little, but one thing that was pointed out to me on
my 912UL is the braided lines coming from the flywheel (pickup coils) to the CDI
boxes. If they are tight, they can pull loose from one or both ends only under
high torque load (high power) when the rubber mounts flex.
Maybe something else to look at?
--------
Thanks,
Av8r3400
Kitfox Model IV-1200
912UL
IVO-IFA
Grove Gear
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=250790#250790
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | spacer at rear of cockpit roof- info needed |
Due to the unusual configuration of my rear window I must place a wide
strip of aluminum over the rear of the cockpit roof which extends over
the one piece rear window plastic. I may not wish to keep the
arrangement and I want to make provision for returning to the folding
window. (if anyone has a folding window for sale now would be a good
time to speak up).
In order to do that I must replace the spacer that goes between the roof
and the support, but I do not know how thick it is or the original
material. My original Denney manual gives no specs for many pieces, just
part numbers.
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: spacer at rear of cockpit roof- info needed |
Dave,
You caught me at the perfect moment. I am in the process of straightening
up my hangar for a 4th of July breakfast here. Along with that project is
an attempt to sort through the parts for my new (1992) Model IV kit. The
part you are wondering about is .025 thick. The turtle deck is .020. The
piece I have is cut a bit shy of half inch. If you can't find such a piece
locally, I have a bit of scrap and should be able to send what you need for
postage.
Lowell
----- Original Message -----
From: "Dave G" <occom@ns.sympatico.ca>
Sent: Tuesday, June 30, 2009 3:24 PM
Subject: Kitfox-List: spacer at rear of cockpit roof- info needed
Due to the unusual configuration of my rear window I must place a wide strip
of aluminum over the rear of the cockpit roof which extends over the one
piece rear window plastic. I may not wish to keep the arrangement and I want
to make provision for returning to the folding window. (if anyone has a
folding window for sale now would be a good time to speak up).
In order to do that I must replace the spacer that goes between the roof and
the support, but I do not know how thick it is or the original material. My
original Denney manual gives no specs for many pieces, just part numbers.
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: spacer at rear of cockpit roof- info needed |
Thanks Lowell, I can come up with enough .025 to make it. The top piece I'm
using is just soft aluminum and weighs 5 oz. on top of the very heavy
window, not ideal and I expect to remove it later on.
----- Original Message -----
From: "Lowell Fitt" <lcfitt@sbcglobal.net>
Sent: Tuesday, June 30, 2009 9:23 PM
Subject: Re: Kitfox-List: spacer at rear of cockpit roof- info needed
>
> Dave,
>
> You caught me at the perfect moment. I am in the process of straightening
> up my hangar for a 4th of July breakfast here. Along with that project is
> an attempt to sort through the parts for my new (1992) Model IV kit. The
> part you are wondering about is .025 thick. The turtle deck is .020. The
> piece I have is cut a bit shy of half inch. If you can't find such a piece
> locally, I have a bit of scrap and should be able to send what you need
> for postage.
>
> Lowell
>
> ----- Original Message -----
> From: "Dave G" <occom@ns.sympatico.ca>
> To: <kitfox-list@matronics.com>
> Sent: Tuesday, June 30, 2009 3:24 PM
> Subject: Kitfox-List: spacer at rear of cockpit roof- info needed
>
>
> Due to the unusual configuration of my rear window I must place a wide
> strip of aluminum over the rear of the cockpit roof which extends over the
> one piece rear window plastic. I may not wish to keep the arrangement and
> I want to make provision for returning to the folding window. (if anyone
> has a folding window for sale now would be a good time to speak up).
>
> In order to do that I must replace the spacer that goes between the roof
> and the support, but I do not know how thick it is or the original
> material. My original Denney manual gives no specs for many pieces, just
> part numbers.
>
>
>
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|