Today's Message Index:
----------------------
1. 02:49 AM - Re: Wiring 3300 to an alternator switch (jetboy)
2. 09:40 AM - Re: Re: Wiring 3300 to an alternator switch (Noel Loveys)
3. 11:23 AM - Fuel flow test (DanM)
4. 11:54 AM - Re: Fuel flow test (Ron Shannon)
5. 12:35 PM - Re: Fuel flow test (Lynn Matteson)
6. 02:38 PM - Re: Fuel flow test (Ed D'Antoni)
7. 03:37 PM - Re: Fuel flow test (Ed D'Antoni)
8. 09:49 PM - Re: Re: Wiring 3300 to an alternator switch (Fiveonepw@aol.com)
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Subject: | Re: Wiring 3300 to an alternator switch |
Mark,
That regulator cct diagram really is difficult to follow with the transistors drawn
upside down etc. but after studying it for a few years I decided it should
work. Both the sense transistors and the ouput do get full wave rectifiers -
its just that 2 diodes of the bridge are used for both functions and each of
the SCRs forming the remainder of the bridge just supply the output -ve return.
I have not tried fitting the 'charge' lamp and in my plane it would give me
flat battery anyway.
The 85 Volts or so is allways available from the PMA if unloaded however with this
type of regulator its not likely to ever get thru to the output unless the
sense wire has become disassociated with the output. it would not be as violent
as an automotive field controlled alternator going full on however now that
all engines are fitted with the 20 amp 6 pole stator the battery may not contain
the excess for long.
Best practice is to cut off the regulator connector and crimp splice or solder
the PMA wires. This is now covered in the manuals or bulletins somewhere due to
wiring fires. Then crimp the red & yellow together and via fusible wire link
to battery. Crimp black wire to a ground lug and also to -ve wire to battery
-ve lug.
Otherwise use wiring diagram Z20
Ralph
--------
Ralph - CH701 / 2200a
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=172464#172464
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Subject: | Re: Wiring 3300 to an alternator switch |
-----Original Message-----
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of jetboy
Sent: Tuesday, March 25, 2008 7:17 AM
Subject: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
I have not tried fitting the 'charge' lamp and in my plane it would give me
flat battery anyway.
That's the reason they have the master switch on the battery lead. What I
don't like is there is no way to disconnect the feed from the regulator to
the main buss. I think I'd like to have one in case of a problem with the
rectifier/regulator.
Noel
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I'm going to try and do the initial start of my 2200a engine, Kitfox IV, in about
two weeks, I think a fuel flow test is necessary prior to the start. Anybody
out there have information or documents on this procedure?
thanks
--------
Dan Mc Intyre
Kitfox Model IV, Jab 2200
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=172578#172578
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Subject: | Re: Fuel flow test |
A flow test isn't necessary before first start, though fuel to the engine is
mandatory! :-)
To do a fuel flow test, position the airplane in max climb attitude, usually
somewhere in the neighborhood of 20-22 deg. nose high. Test fuel flow at the
carb inlet. It should be 150% of the wide open throttle (WOT) requirements
of the engine.
The 3300 is WOT flow is about 10 GPH, so we want fuel flow of about 16 GPH
to be safe. Not sure about the 2200's WOT consumption rate.
Ron
On Tue, Mar 25, 2008 at 11:19 AM, DanM <danm@gangnailtruss.com> wrote:
>
> I'm going to try and do the initial start of my 2200a engine, Kitfox IV,
> in about two weeks, I think a fuel flow test is necessary prior to the
> start. Anybody out there have information or documents on this procedure?
>
> thanks
>
> --------
> Dan Mc Intyre
> Kitfox Model IV, Jab 2200
>
>
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Subject: | Re: Fuel flow test |
I attended a forum given by Jack Dueck at Oshkosh in Summer of '05. I
think he works for the EAA at Oshkosh. I got a handout describing the
method. Maybe there's something online through EAA. I'd give them a
shout/email and see. I also think that Jabiru has a method that they
use, at least I read that somewhere. I'd give Pete, Andy or Jim a call.
Basically what you're doing is seeing if the fuel system will flow
150% of what the engine will require in a gravity-flow, high-wing
plane. The handout that I have talks in terms of weight of the fuel,
and has a graph that converts horsepower to lbs of fuel per hour.
Lynn Matteson
Grass Lake, Michigan
Kitfox IV Speedster w/Jabiru 2200
flying w/480+ hrs/down for annual
On Mar 25, 2008, at 2:19 PM, DanM wrote:
> <danm@gangnailtruss.com>
>
> I'm going to try and do the initial start of my 2200a engine,
> Kitfox IV, in about two weeks, I think a fuel flow test is
> necessary prior to the start. Anybody out there have information
> or documents on this procedure?
>
> thanks
>
> --------
> Dan Mc Intyre
> Kitfox Model IV, Jab 2200
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=172578#172578
>
>
Message 6
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Subject: | Re: Fuel flow test |
The Fuel flow test is detailed in Tony Bingelis' book Fire Wall Forward (Page 175).
A simplified version is described in EAA Experimenter, 2003 May edition.
It is probably also somewhere in FAA's Acceptable Methods --- AC43.13. Part
of the documentation for registration includes self certification that you have
carried out a fuel flow test.
Ed
Lynn Matteson <lynnmatt@jps.net> wrote:
I attended a forum given by Jack Dueck at Oshkosh in Summer of '05. I
think he works for the EAA at Oshkosh. I got a handout describing the
method. Maybe there's something online through EAA. I'd give them a
shout/email and see. I also think that Jabiru has a method that they
use, at least I read that somewhere. I'd give Pete, Andy or Jim a call.
Basically what you're doing is seeing if the fuel system will flow
150% of what the engine will require in a gravity-flow, high-wing
plane. The handout that I have talks in terms of weight of the fuel,
and has a graph that converts horsepower to lbs of fuel per hour.
Lynn Matteson
Grass Lake, Michigan
Kitfox IV Speedster w/Jabiru 2200
flying w/480+ hrs/down for annual
On Mar 25, 2008, at 2:19 PM, DanM wrote:
>
>
> I'm going to try and do the initial start of my 2200a engine,
> Kitfox IV, in about two weeks, I think a fuel flow test is
> necessary prior to the start. Anybody out there have information
> or documents on this procedure?
>
> thanks
>
> --------
> Dan Mc Intyre
> Kitfox Model IV, Jab 2200
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=172578#172578
>
>
---------------------------------
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Message 7
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Subject: | Re: Fuel flow test |
Here is the exact wording from the FAA's Amateur-Built Aircraft and Ultralight
Flight testing handbook which you can download at:
http://www.faa.gov/library/manuals/aircraft/media/ac90-89a.pdf
e. Fuel Flow and Unusable Fuel Check: This
is a field test to ensure the aircraft engine will get
enough fuel to run properly, even if the aircraft is
in a steep climb or stall attitude.
(1) First, place the aircrafts nose at an
angle 5 degrees above the highest anticipated climb
angle. The easiest and safest way to do this with
a conventional gear aircraft is to dig a hole and place
the aircrafts tail in it. For a nose gear aircraft, build
a ramp to raise the nose gear to the proper angle.
(2) Make sure the aircraft is tied-down and
chocked. With minimum fuel in the tanks, disconnect
the fuel line to carburetor. The fuel flow with a gravity
flow system should be 150 percent of the fuel
consumption of the engine at full throttle. With a
fuel system that is pressurized, the fuel flow should
be at least 125 percent. When the fuel stops flowing,
the remaining fuel is the unusable fuel quantity.
(3) Since the fuel consumption of most
modern engines is approximately .55 pounds per
brake horsepower per hour for a 100 horsepower
engine, the test fuel flow should be 82.5 pounds (13.7
gallons) per hour for gravity feed, or 68.75 pounds
(11.5 gallons) per hour for a pressurized system. The
pounds per hour divided by 60 equals 1.4 pounds
and 1.15 pounds per minute fuel rate respectively.
NOTE: Formula for fuel flow rate gravity
feed is .55 x engine horsepower x 1.50
pounds of fuel per hour divided by 60 to
get pounds per minute, divided by 6 to get
gallons per minute. For a pressurized system,
substitute 1.25 for 1.50 to determine
fuel flow rate.
f. Changing Fuel Flow or Pressure: If the
aircrafts fuel flow rate is less than planned, there
is a volume or pressure problem. An increase in the
fuel flow volume may necessitate installation of
larger fuel line fittings on the fuel tanks, fuel selector,
and carburetor in addition to larger internal diameter
fuel lines. To increase fuel pressure, install an electrically
driven or engine driven mechanical fuel
pump prior to the first flight.
Lynn Matteson <lynnmatt@jps.net> wrote:
I attended a forum given by Jack Dueck at Oshkosh in Summer of '05. I
think he works for the EAA at Oshkosh. I got a handout describing the
method. Maybe there's something online through EAA. I'd give them a
shout/email and see. I also think that Jabiru has a method that they
use, at least I read that somewhere. I'd give Pete, Andy or Jim a call.
Basically what you're doing is seeing if the fuel system will flow
150% of what the engine will require in a gravity-flow, high-wing
plane. The handout that I have talks in terms of weight of the fuel,
and has a graph that converts horsepower to lbs of fuel per hour.
Lynn Matteson
Grass Lake, Michigan
Kitfox IV Speedster w/Jabiru 2200
flying w/480+ hrs/down for annual
On Mar 25, 2008, at 2:19 PM, DanM wrote:
>
>
> I'm going to try and do the initial start of my 2200a engine,
> Kitfox IV, in about two weeks, I think a fuel flow test is
> necessary prior to the start. Anybody out there have information
> or documents on this procedure?
>
> thanks
>
> --------
> Dan Mc Intyre
> Kitfox Model IV, Jab 2200
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=172578#172578
>
>
---------------------------------
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Subject: | Re: Wiring 3300 to an alternator switch |
Ralph-
Thanks for the description- with your help, I think I have it sorted out!
Appreciate the assist-
Mark
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