Today's Message Index:
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0. 10:15 AM - Just 3 Days Left - Please Make Your List Contribution Today! (Matt Dralle)
1. 10:52 AM - Re: Leaky carburetor (Lynn Matteson)
2. 08:48 PM - Rotax 582 and MGL EFIS (Ella Palamarek)
3. 08:53 PM - 25 year old club (Malcolm Brubaker)
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| Subject: | Just 3 Days Left - Please Make Your List Contribution Today! |
There are only three days left until the end of this year's List Fund Raiser.
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Thank you in advance for your support of these List services!
Matt Dralle
Matronics Email and Forum Administrator
Message 1
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| Subject: | Re: Leaky carburetor |
Actually, Lowell, there are at least 3 different float needles, and
they are color-coded on the spring end of the needle. The coloring is
very faint, and you almost have to have them all in front of you to
compare the colors. The one with the weakest spring is the silver
one, the middle strength spring is gold, and the one with the
strongest spring is black. The spring strengths are about 4 oz.,
about 6 oz., and about 16 oz. When I had a Bing on my Jabiru engine,
I ended up using the black-coded needle, along with a larger float
needle seat (3.7 mm), and that proved to be the best for my gravity-
feed fuel system.
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062
Prince prop 64 x 30, P-tip
Electroair direct-fire ignition system
Rotec TBI-40 injection (sleeved to 36mm)
Status: flying with 1395 hrs... (since 3-27-2006)
On Nov 27, 2012, at 3:30 PM, Lowell Fitt wrote:
> <lcfitt@sbcglobal.net>
>
> John,
> This has been a mystery to me and it is a problem that is
> frequently discussed. The only time I experienced it was when I
> rebuilt my carburetors and put In the new float needles among the
> other things. I was told that there are two different needles, one
> for the bouncier ULS - at least on start-up and shut down - and one
> for the 912 UL. I went back to the old needles and no further
> problems. Others have suggested out of balance carburetors - don't
> know about that one. My new Model IV has a 1994 engine and there
> are no such issues which makes me think it just might be the float
> needles. Sorry for just opinions and nothing really helpful.
> Lowell
>
> --------------------------------------------------
> From: "John Kerr" <kerrjohna@comcast.net>
> Sent: Tuesday, November 27, 2012 10:39 AM
> To: <kitfox-list@matronics.com>
> Subject: Kitfox-List: Leaky carburetor
>
>>
>> New 912ul. Fuel tends to leak from Vent tube and filter. Valve
>> does not appear to leak when actuated by light finger pressure.
>> Have checked float arms adjusted lever to valve slightly but still
>> leaks.
>>
>> Suggestions
>>
>> John Kerr
>> Classic 4 800+ hrs
>>
>> Sent from my iPad
>>
>>
>>
>
>
Message 2
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| Subject: | Rotax 582 and MGL EFIS |
This was just received via one of our Canadian associations and I think it
is worth forwarding to the Kitfox list as I believe a number of fellows are
using these engines and possibly the MGL EFIS.
Ted Palamarek
Edmonton Alberta
KF IV/912
RAA Canada has received a letter from Canada Transport Safety Board
concerning a fatal UL crash this past summer. On climb out the Rotax 582
engine abruptly lost power and it appears that the pilot attempted to turn
back, and the plane stalled and crashed. Mention is made of the MGL Enigma
EFIS and its fuel flow transducer that has a 1 mm ID jet installed. A Rotax
582 requires 0.45 litres per minute of fuel flow, and it appears that with
the usual pulse pump there was no more than .24 litres per minute available
when the 1 mm orifice was used. Allowing for the fuel in the float bowls
this meant that full power would not be possible for more than 20 seconds.
It is noteworthy that Rotax specifies a fuel line with an ID of no less than
5 mm, and they caution never to restrict the fuel flow. MGL now has a safety
notice on this and they are now recommending a 2 mm orifice.
Please take the time to check with MGL if you are using one of their fuel
flow measuring systems, and if you know of any pilots using these please
encourage them to do the same.
Message 3
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| Subject: | 25 year old club |
this club has a great news leter it will be 25 years old next year check it out
http://www.michiganultralight.com/newsletter/DEC12/Dec12evers.PDF
Malcolm & Jeanne Brubaker
Michigan Sport Pilot Repair
http://michigansportpilotrepair.com/
LSRM-A, PPC, WS
Great Sails - Sailmaker
for Ultralight & Light Sport
(989)513-3022
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