Today's Message Index:
----------------------
1. 02:49 AM - Re: AN fuel line fittings (Jay Hyde)
2. 07:08 AM - Bad Carburetor Floats (Don Maxwell)
3. 08:18 AM - Re: Bad Carburetor Floats (Roger Lee)
4. 11:39 AM - Re: AN fuel line fittings (Guy Buchanan)
5. 11:46 AM - Re: Bad Carburetor Floats (Guy Buchanan)
6. 11:55 AM - Re: Bad Carburetor Floats (Gale Derosier)
7. 11:59 AM - Re: AN fuel line fittings (FLYaDIVE)
8. 04:16 PM - Re: AN fuel line fittings (Guy Buchanan)
9. 04:41 PM - Re: AN fuel line fittings (FLYaDIVE)
10. 05:39 PM - Re: Bad Carburetor Floats (Roger Lee)
11. 07:30 PM - Re: Re: Bad Carburetor Floats (John Hauck)
Message 1
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Subject: | AN fuel line fittings |
Hello Guy,
One problem with brass is that it may corrode in such a way to block your
small orifices- although I think that with fuel it would be ok. The reason
for this is that brass will corrode in the presence of water (as do other
metals, but I have noticed that brass will do that in a pain in the arse way
in particular situations). Because you are using brass in your fuel lines
it shouldn't be a problem- except where you have small orifices.
But it looks as if you have that figured out.
Johannesburg Jay
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HH Enterprises
* Aircraft assembly, repair, wiring and avionics
* Flight instruction
* General and Electrical Engineering services
(NHD Elec Eng, BTech Elec Eng, GDE ELec Eng)
* Great dinner parties and conversation
* General adventuring, climbing, kayaking and living
Blog: <http://www.rawhyde.wordpress.com/> www.rawhyde.wordpress.com
Cel: 083 300 8675
Email: <mailto:jay@horriblehyde.com> jay@horriblehyde.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Guy
Buchanan
Sent: 05 September 2014 02:45 AM
Subject: Re: RotaxEngines-List: AN fuel line fittings
Lots of people do, indeed possibly most out there. I used them throughout,
my only question was whether to use aluminum of steel. I used steel and
brass on fuel, and used steel on a couple of the oil lines; the rest
aluminum. Hope it works, as I'm not quite flying yet.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
Now a glider pilot, too.
On 9/4/2014 3:00 PM, frank3 wrote:
<mailto:frank3phyl@comcast.net> <frank3phyl@comcast.net>
Has any one gone to the trouble (and expense) of using AN fittings on their
fuel or oil lines, i.e. used Aeroquip or Stratoflex fittings? How'd that
work out for ya?
--------
Frank McDonald
Kitfox S7
912S, Sensenich Composite 3 Blade
Acworth, GA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430002#430002
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Subject: | Bad Carburetor Floats |
Has anyone heard recently of new Rotax four-stroke engines with faulty
carburetor floats?
I'm curious because I know of three brand new engines--one 912ULS, two
914UL--that have had multiple floats fill with gasoline and sink within
the first 50 hours of operation in new airplanes. Each of these engines
has had at least two bad floats and one had 3 of 4. I don't know the
engine serial numbers, but all three engines are on brand new,
factory-fresh S-LSA Seareys, all produced within a few weeks of each other.
The sunken floats caused flooding in all three engines--so severe that
the engine wouldn't run at low throttle settings and soon the 914s
wouldn't run at all with either fuel pump on. One owner had to make an
emergency landing by turning the fuel pumps off until the engine
stumbled and then switching one on just long enough to get it running
again.
One of the 914s had fuel staining in an air box drain hose. Fuel was
discovered running from the 912 carburetor vent while burping the engine
during preflight.
Lockwood is assisting the owners, and one hopes that by now Rotax has
been informed.
But The Question is: How many more bad floats are in service?
Message 3
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Subject: | Re: Bad Carburetor Floats |
I haven't heard of any sudden failed in floats on new planes. That said it is possible
Bing got a bad batch. It is the outside coating on the float that seals
the airy foam inside from the fuel. If the outside gets a hole then fuel can
enter the inside of the float.
The floats and carbs are made by Bing here in the US. I have seen sunken floats,
but it isn't that common. I did just have a bad float on an RV12 with 60 hrs.
Symptoms are fuel smell and fuel coming out the vent. If you suspect a bad float
by a rough running engine and fuel venting then just pop the bowl off and
look at the floats in the fuel. The pins that stick out the side of the float
should be equal to the fuel level. If the float is bad that pin and float will
be down under the fuel level. These are covered by warranty if you are still
under your warranty.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430059#430059
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Subject: | Re: AN fuel line fittings |
Thankfully the brass parts are limited to 3/8" openings and I don't plan
on running alcohol fuel, so it shouldn't be a problem.
Guy
On 9/5/2014 2:47 AM, Jay Hyde wrote:
>
> Hello Guy,
>
> One problem with brass is that it may corrode in such a way to block
> your small orifices- although I think that with fuel it would be ok.
> The reason for this is that brass will corrode in the presence of
> water (as do other metals, but I have noticed that brass will do that
> in a pain in the arse way in particular situations). Because you are
> using brass in your fuel lines it shouldnt be a problem- except where
> you have small orifices.
>
> But it looks as if you have that figured out
>
> Johannesburg Jay
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> *HH Enterprises ***
>
> * Aircraft assembly, repair, wiring and avionics
> * Flight instruction
> * General and Electrical Engineering services
>
> (NHD Elec Eng, BTech Elec Eng, GDE ELec Eng)
>
> * Great dinner parties and conversation
> * General adventuring, climbing, kayaking and living
>
> Blog: www.rawhyde.wordpress.com <http://www.rawhyde.wordpress.com/>
>
> Cel: 083 300 8675
>
> Email: jay@horriblehyde.com <mailto:jay@horriblehyde.com>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> *From:*owner-rotaxengines-list-server@matronics.com
> [mailto:owner-rotaxengines-list-server@matronics.com] *On Behalf Of
> *Guy Buchanan
> *Sent:* 05 September 2014 02:45 AM
> *To:* rotaxengines-list@matronics.com
> *Subject:* Re: RotaxEngines-List: AN fuel line fittings
>
> Lots of people do, indeed possibly most out there. I used them
> throughout, my only question was whether to use aluminum of steel. I
> used steel and brass on fuel, and used steel on a couple of the oil
> lines; the rest aluminum. Hope it works, as I'm not quite flying yet.
>
> Guy Buchanan
> Ramona, CA
> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
> Now a glider pilot, too.
>
>
> On 9/4/2014 3:00 PM, frank3 wrote:
>
>
>
>
> Has any one gone to the trouble (and expense) of using AN fittings on their
fuel or oil lines, i.e. used Aeroquip or Stratoflex fittings? How'd that work
out for ya?
>
>
>
> --------
>
> Frank McDonald
>
> Kitfox S7
>
> 912S, Sensenich Composite 3 Blade
>
> Acworth, GA
>
>
>
>
>
>
>
>
>
> Read this topic online here:
>
>
>
> http://forums.matronics.com/viewtopic.php?p=430002#430002
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> * *
> * *
> http://www.matronics.com/Navigator?RotaxEngines-List
> http://forums.matronics.com
> http://www.matronics.com/contribution
> * *
> *
>
>
> *
Message 5
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|
Subject: | Re: Bad Carburetor Floats |
Sounds like having one or two in the repair kit might not be a bad idea.
Speaking of which, what 912 spares do you guys generally carry? I was
thinking:
* Float
* Needle
* Fuel filter
* Spark plug(s)
* 1 qt. oil
Can't think of anything else. Carb boot?
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
Now a glider pilot, too.
On 9/5/2014 7:08 AM, Don Maxwell wrote:
> Has anyone heard recently of new Rotax four-stroke engines with faulty
> carburetor floats?
>
> I'm curious because I know of three brand new engines--one 912ULS, two
> 914UL--that have had multiple floats fill with gasoline and sink
> within the first 50 hours of operation in new airplanes. Each of these
> engines has had at least two bad floats and one had 3 of 4. I don't
> know the engine serial numbers, but all three engines are on brand
> new, factory-fresh S-LSA Seareys, all produced within a few weeks of
> each other.
>
> The sunken floats caused flooding in all three engines--so severe that
> the engine wouldn't run at low throttle settings and soon the 914s
> wouldn't run at all with either fuel pump on. One owner had to make
> an emergency landing by turning the fuel pumps off until the engine
> stumbled and then switching one on just long enough to get it running
> again.
>
> One of the 914s had fuel staining in an air box drain hose. Fuel was
> discovered running from the 912 carburetor vent while burping the
> engine during preflight.
>
> Lockwood is assisting the owners, and one hopes that by now Rotax has
> been informed.
>
> But The Question is: How many more bad floats are in service?
>
> *
>
>
> *
Message 6
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|
Subject: | Re: Bad Carburetor Floats |
With a Rotax you could go all the way to Alaska and back without using any
oil. There is virtually no oil consumption on the road tax per Lockwood at
Oshkosh.
On Sep 5, 2014 1:50 PM, "Guy Buchanan" <gebuchanan@cox.net> wrote:
> Sounds like having one or two in the repair kit might not be a bad idea.
> Speaking of which, what 912 spares do you guys generally carry? I was
> thinking:
>
> - Float
> - Needle
> - Fuel filter
> - Spark plug(s)
> - 1 qt. oil
>
> Can't think of anything else. Carb boot?
> Guy Buchanan
> Ramona, CA
> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
> Now a glider pilot, too.
>
> On 9/5/2014 7:08 AM, Don Maxwell wrote:
>
> Has anyone heard recently of new Rotax four-stroke engines with faulty
> carburetor floats?
>
> I'm curious because I know of three brand new engines--one 912ULS, two
> 914UL--that have had multiple floats fill with gasoline and sink within the
> first 50 hours of operation in new airplanes. Each of these engines has had
> at least two bad floats and one had 3 of 4. I don't know the engine serial
> numbers, but all three engines are on brand new, factory-fresh S-LSA
> Seareys, all produced within a few weeks of each other.
>
> The sunken floats caused flooding in all three engines--so severe that the
> engine wouldn't run at low throttle settings and soon the 914s wouldn't run
> at all with either fuel pump on. One owner had to make an emergency
> landing by turning the fuel pumps off until the engine stumbled and then
> switching one on just long enough to get it running again.
>
> One of the 914s had fuel staining in an air box drain hose. Fuel was
> discovered running from the 912 carburetor vent while burping the engine
> during preflight.
>
> Lockwood is assisting the owners, and one hopes that by now Rotax has been
> informed.
>
> But The Question is: How many more bad floats are in service?
>
>
> *
>
>
> *
>
>
Message 7
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|
Subject: | Re: AN fuel line fittings |
Hi Jay & Gaggle:
Brass does not corrode. It can oxidize the same as aluminum, forming Brass
Oxide. As for small orifices - There should NOT be any small orifices in a
fuel system. There is a simple and basic requirement that the fuel line
have a diameter large enough to supply twice the full power hourly fuel
flow of the engine under a gravity feed system. Now, there are BRASS
nozzles used on many Lycoming & Continental engines for the Primer Lines
which are quite small. In the range of 0.060" Diameter. So, once again
orifice size in not an issue. MANY carburetors use brass nozzles and valve
seats internally - So, once again orifice size in not an issue.
Sorry Jay, your information is not correct.
Barry
On Fri, Sep 5, 2014 at 5:47 AM, Jay Hyde <jay@horriblehyde.com> wrote:
> Hello Guy,
>
> One problem with brass is that it may corrode in such a way to block your
> small orifices- although I think that with fuel it would be ok. The reason
> for this is that brass will corrode in the presence of water (as do other
> metals, but I have noticed that brass will do that in a pain in the arse
> way in particular situations). Because you are using brass in your fuel
> lines it shouldn't be a problem- except where you have small orifices.
>
> But it looks as if you have that figured out...
>
> Johannesburg Jay
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> *HH Enterprises *
>
> - Aircraft assembly, repair, wiring and avionics
> - Flight instruction
> - General and Electrical Engineering services
>
> (NHD Elec Eng, BTech Elec Eng, GDE ELec Eng)
>
> - Great dinner parties and conversation
> - General adventuring, climbing, kayaking and living
>
>
> Blog: www.rawhyde.wordpress.com
>
> Cel: 083 300 8675
>
> Email: jay@horriblehyde.com
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
> *From:* owner-rotaxengines-list-server@matronics.com [mailto:
> owner-rotaxengines-list-server@matronics.com] *On Behalf Of *Guy Buchanan
> *Sent:* 05 September 2014 02:45 AM
> *To:* rotaxengines-list@matronics.com
> *Subject:* Re: RotaxEngines-List: AN fuel line fittings
>
>
> Lots of people do, indeed possibly most out there. I used them throughout,
> my only question was whether to use aluminum of steel. I used steel and
> brass on fuel, and used steel on a couple of the oil lines; the rest
> aluminum. Hope it works, as I'm not quite flying yet.
>
> Guy Buchanan
> Ramona, CA
> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
> Now a glider pilot, too.
>
>
> On 9/4/2014 3:00 PM, frank3 wrote:
>
>
>
> Has any one gone to the trouble (and expense) of using AN fittings on their fuel
or oil lines, i.e. used Aeroquip or Stratoflex fittings? How'd that work
out for ya?
>
>
> --------
>
> Frank McDonald
>
> Kitfox S7
>
> 912S, Sensenich Composite 3 Blade
>
> Acworth, GA
>
>
> Read this topic online here:
>
>
> http://forums.matronics.com/viewtopic.php?p=430002#430002
>
>
> http://www.matronics.com/Navigator?RotaxEngines-List
>
> http://forums.matronics.com
>
> http://www.matronics.com/contribution
>
>
> *
>
>
> *
>
>
Message 8
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|
Subject: | Re: AN fuel line fittings |
I think I agree on the corrosion, unless it's electrolytic. As to the
orifices, there is one in the stock return line. Not sure what size it
is, but it is pretty small, certainly smaller than .06".
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
Now a glider pilot, too.
On 9/5/2014 11:59 AM, FLYaDIVE wrote:
> Hi Jay & Gaggle:
>
> Brass does not corrode. It can oxidize the same as aluminum, forming
> Brass Oxide. As for small orifices - There should NOT be any small
> orifices in a fuel system. There is a simple and basic requirement
> that the fuel line have a diameter large enough to supply twice the
> full power hourly fuel flow of the engine under a gravity feed system.
> Now, there are BRASS nozzles used on many Lycoming & Continental
> engines for the Primer Lines which are quite small. In the range of
> 0.060" Diameter. So, once again orifice size in not an issue. MANY
> carburetors use brass nozzles and valve seats internally - So, once
> again orifice size in not an issue.
> Sorry Jay, your information is not correct.
>
> Barry
>
>
> On Fri, Sep 5, 2014 at 5:47 AM, Jay Hyde <jay@horriblehyde.com
> <mailto:jay@horriblehyde.com>> wrote:
>
> Hello Guy,
>
> One problem with brass is that it may corrode in such a way to
> block your small orifices- although I think that with fuel it
> would be ok. The reason for this is that brass will corrode in
> the presence of water (as do other metals, but I have noticed that
> brass will do that in a pain in the arse way in particular
> situations). Because you are using brass in your fuel lines it
> shouldnt be a problem- except where you have small orifices.
>
> But it looks as if you have that figured out
>
> Johannesburg Jay
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> *HH Enterprises ***
>
> * Aircraft assembly, repair, wiring and avionics
> * Flight instruction
> * General and Electrical Engineering services
>
> (NHD Elec Eng, BTech Elec Eng, GDE ELec Eng)
>
> * Great dinner parties and conversation
> * General adventuring, climbing, kayaking and living
>
> Blog: www.rawhyde.wordpress.com <http://www.rawhyde.wordpress.com/>
>
> Cel: 083 300 8675
>
> Email: jay@horriblehyde.com <mailto:jay@horriblehyde.com>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> *From:*owner-rotaxengines-list-server@matronics.com
> <mailto:owner-rotaxengines-list-server@matronics.com>
> [mailto:owner-rotaxengines-list-server@matronics.com
> <mailto:owner-rotaxengines-list-server@matronics.com>] *On Behalf
> Of *Guy Buchanan
> *Sent:* 05 September 2014 02:45 AM
> *To:* rotaxengines-list@matronics.com
> <mailto:rotaxengines-list@matronics.com>
> *Subject:* Re: RotaxEngines-List: AN fuel line fittings
>
> Lots of people do, indeed possibly most out there. I used them
> throughout, my only question was whether to use aluminum of steel.
> I used steel and brass on fuel, and used steel on a couple of the
> oil lines; the rest aluminum. Hope it works, as I'm not quite
> flying yet.
>
> Guy Buchanan
> Ramona, CA
> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
> Now a glider pilot, too.
>
>
> On 9/4/2014 3:00 PM, frank3 wrote:
>
>
>
>
> Has any one gone to the trouble (and expense) of using AN fittings on
their fuel or oil lines, i.e. used Aeroquip or Stratoflex fittings? How'd that
work out for ya?
>
>
>
> --------
>
> Frank McDonald
>
> Kitfox S7
>
> 912S, Sensenich Composite 3 Blade
>
> Acworth, GA
>
>
>
>
>
>
>
>
>
> Read this topic online here:
>
>
>
> http://forums.matronics.com/viewtopic.php?p=430002#430002
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> * *
>
> * *
>
> http://www.matronics.com/Navigator?RotaxEngines-List
>
> http://forums.matronics.com
>
> http://www.matronics.com/contribution
>
> * *
>
> *
>
> ist" target="_blank">http://www.matronics.com/Navigator?RotaxEngines-List
> tp://forums.matronics.com
> _blank">http://www.matronics.com/contribution
>
> *
>
>
> *
>
>
> *
Message 9
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|
Subject: | Re: AN fuel line fittings |
Guy:
You cannot agree to the corrosion as it is nonexistent. Did you read my
post?
Just in case you missed it:-
Hi Jay & Gaggle:
Brass does not corrode. It can oxidize the same as aluminum, forming Brass
Oxide. As for small orifices - There should NOT be any small orifices in a
fuel system. There is a simple and basic requirement that the fuel line
have a diameter large enough to supply twice the full power hourly fuel
flow of the engine under a gravity feed system. Now, there are BRASS
nozzles used on many Lycoming & Continental engines for the Primer Lines
which are quite small. In the range of 0.060" Diameter. So, once again
orifice size in not an issue. MANY carburetors use brass nozzles and valve
seats internally - So, once again orifice size in not an issue.
Sorry Jay, your information is not correct.
Barry
========================
And if you wonder what my qualifications are for making my statements, I
was a QA Manager and Technical Sales Engineer for a metal coatings company
for 8 years and a QA Test Engineer for 20+ working years of my life. Add
to that the little fact about brass being used in carbs for decades you
will realize Jay in incorrect.
Barry
On Fri, Sep 5, 2014 at 7:15 PM, Guy Buchanan <gebuchanan@cox.net> wrote:
> I think I agree on the corrosion, unless it's electrolytic. As to the
> orifices, there is one in the stock return line. Not sure what size it is,
> but it is pretty small, certainly smaller than .06".
>
> Guy Buchanan
> Ramona, CA
> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
> Now a glider pilot, too.
>
>
> On 9/5/2014 11:59 AM, FLYaDIVE wrote:
>
> Hi Jay & Gaggle:
>
> Brass does not corrode. It can oxidize the same as aluminum, forming
> Brass Oxide. As for small orifices - There should NOT be any small
> orifices in a fuel system. There is a simple and basic requirement that
> the fuel line have a diameter large enough to supply twice the full power
> hourly fuel flow of the engine under a gravity feed system. Now, there are
> BRASS nozzles used on many Lycoming & Continental engines for the Primer
> Lines which are quite small. In the range of 0.060" Diameter. So, once
> again orifice size in not an issue. MANY carburetors use brass nozzles and
> valve seats internally - So, once again orifice size in not an issue.
> Sorry Jay, your information is not correct.
>
> Barry
>
>
> On Fri, Sep 5, 2014 at 5:47 AM, Jay Hyde <jay@horriblehyde.com> wrote:
>
>> Hello Guy,
>>
>> One problem with brass is that it may corrode in such a way to block your
>> small orifices- although I think that with fuel it would be ok. The reason
>> for this is that brass will corrode in the presence of water (as do other
>> metals, but I have noticed that brass will do that in a pain in the arse
>> way in particular situations). Because you are using brass in your fuel
>> lines it shouldn't be a problem- except where you have small orifices.
>>
>> But it looks as if you have that figured out...
>>
>> Johannesburg Jay
>>
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> *HH Enterprises *
>>
>> - Aircraft assembly, repair, wiring and avionics
>> - Flight instruction
>> - General and Electrical Engineering services
>>
>> (NHD Elec Eng, BTech Elec Eng, GDE ELec Eng)
>>
>> - Great dinner parties and conversation
>> - General adventuring, climbing, kayaking and living
>>
>>
>>
>> Blog: www.rawhyde.wordpress.com
>>
>> Cel: 083 300 8675
>>
>> Email: jay@horriblehyde.com
>>
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>>
>>
>> *From:* owner-rotaxengines-list-server@matronics.com [mailto:
>> owner-rotaxengines-list-server@matronics.com] *On Behalf Of *Guy Buchanan
>> *Sent:* 05 September 2014 02:45 AM
>> *To:* rotaxengines-list@matronics.com
>> *Subject:* Re: RotaxEngines-List: AN fuel line fittings
>>
>>
>>
>> Lots of people do, indeed possibly most out there. I used them
>> throughout, my only question was whether to use aluminum of steel. I used
>> steel and brass on fuel, and used steel on a couple of the oil lines; the
>> rest aluminum. Hope it works, as I'm not quite flying yet.
>>
>> Guy Buchanan
>> Ramona, CA
>> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
>> Now a glider pilot, too.
>>
>>
>>
>> On 9/4/2014 3:00 PM, frank3 wrote:
>>
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>>
>>
>> Has any one gone to the trouble (and expense) of using AN fittings on their
fuel or oil lines, i.e. used Aeroquip or Stratoflex fittings? How'd that work
out for ya?
>>
>>
>>
>> --------
>>
>> Frank McDonald
>>
>> Kitfox S7
>>
>> 912S, Sensenich Composite 3 Blade
>>
>> Acworth, GA
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>> Read this topic online here:
>>
>>
>>
>> http://forums.matronics.com/viewtopic.php?p=430002#430002
>>
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>> http://www.matronics.com/Navigator?RotaxEngines-List
>>
>> http://forums.matronics.com
>>
>> http://www.matronics.com/contribution
>>
>>
>>
>> *
>>
>> ist" target="_blank">http://www.matronics.com/Navigator?RotaxEngines-List <http://www.matronics.com/Navigator?RotaxEngines-List>
>> tp://forums.matronics.com <http://forums.matronics.com>
>> _blank">http://www.matronics.com/contribution <http://www.matronics.com/contribution>
>>
>> *
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Subject: | Re: Bad Carburetor Floats |
If you look at the shear numbers of Rotax engines with Bing carbs on them then
any failure rate is very minuscule. They tend to hold up well for long periods.
I don't know of a single person that carries carb parts as spares.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430088#430088
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Subject: | Re: Bad Carburetor Floats |
20 years ago I flew a 17,400.0 sm flight. I had a spare set of spark plugs
for my 912 80 hp. In 1993, there was no 912UL or ULS. I had 100 hours on
the oil when I got to North Pole, Alaska. Got the guys at Bradley Sky Ranch
to run me down to NAPA to pick up two qts of Mobile I and a Fram PH3614. I
dumped my spare qt of oil in the tank, and never carried any spare oil after
that. That was 3,000.0 plus hours and three 912's ago. On that flight I
flew 232.0 hours in 41 days. Averaged 8 hours per day for the 30 days I
actually flew. The only engine problem I had was occasional spark plug lead
fouling. When that happened, I would feel a periodic tapping in the
airframe. Next landing, pull the plugs, take my pen knife, clean out the
lead, put them back in and keep on flying. I was extremely impressed with
the 912 on that flight, and every long flight since then.
I did have a carb tuning problem that I encountered once I got up into BC
where the temps dropped on me. Didn't know it at the time, nor did any of
the Rotax experts from Eric Tucker right on down, what to do with me as I
sat weathered-in at Deadhorse, AK. Only on my return to Alabama, where I
had no fear of losing a carb part if I should be so club fisted, did I
finally solve my problem. On a flight down to Ronnie Smith's in Lucedale,
MS, I was flying with some slower ULs. Flying at about 4,200 rpm there was
a really rough spot. I don't know why, but I pulled on the enricher. The
engine picked up 200 rpm. Push off the enricher, the engine lost 200 rpm
and ran a rough again. When I landed I raised the fuel needles one notch.
That fixed my problem, a midrange, very lean condition. Never had that
problem with my 912ULS's. They have run great, right out of the box, hot or
cold weather.
Getting ready to fly from Alabama to my friends at the Rock House, near
Burns Junction, Oregon. Plan to depart first light Sunday morning, if I can
get up and get going that early. Route of flight is Sherman, TX, Clovis,
NM, Los Lunas, NM, Gallup, NM, Monument Valley, UT, Bryce Canyon, UT, Ely,
NV, Owyhee, NV, and finally the Rock House, OR. We are having our
annual/semi-annual Kolb (and any other airplane) Flyin. A bunch of us have
been getting together since 2003 when we had our first Monument Valley Kolb
Unplanned/Unorganized Flyin. Plan to RON Sherman, Los Lunas, MV, and Elko.
Give me a shout if you have time for a cup of coffee and I am in your neck
of the woods.
john hauck
Kolb MKIII
Titus, Alabama
334-315-2621
If you look at the shear numbers of Rotax engines with Bing carbs on them
then any failure rate is very minuscule. They tend to hold up well for long
periods. I don't know of a single person that carries carb parts as spares.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated Rotax Repair Center - Heavy Maint.
Rated Home 520-574-1080 TRY HOME FIRST Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430088#430088
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