Today's Message Index:
----------------------
0. 12:05 AM - Make Sure You're Listed! List of Contributors Published in December! (Matt Dralle)
1. 03:08 AM - Re: Rough running cured with carb heater (=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?=)
2. 07:49 AM - Re: Rough running cured with carb heater (Noel Loveys)
3. 08:01 AM - Re: Rough running cured with carb heater (Noel Loveys)
4. 09:51 AM - Re: Rough running cured with carb heater (=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?=)
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| Subject: | Make Sure You're Listed! List of Contributors Published |
in December!
Dear Listers,
The List of Contributors (LOC) is just around the corner! In December I post a
list of everyone that so generously made a Contribution to support the Lists.
Its my way of publicly thanking everyone that took a minute to show their appreciation
for the Lists.
Won't you take minute and assure that your name is on the upcoming LOC? Tell others
that you appreciate the Lists. Making a Contribution to support the Lists
is fast and easy using your Visa, MasterCard, or Paypal account:
http://www.matronics.com/contribution
Or, drop a personal check in the mail to:
Matt Dralle / Matronics
581 Jeannie Way
Livermore CA 94550
USA
I would like to thank everyone that has so generously made a Contribution thus
far during this year's List Fund Raiser! Remember that its YOUR support that
keeps these Lists running and improving! Don't forget to include a little comment
about how the Lists have
helped you!
Thank you!
Matt Dralle
Matronics Email List Administrator
Message 1
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| Subject: | Re: Rough running cured with carb heater |
Hello Chris.
Can you send me your message again. I did not receive any text with it.
Best regards,
Johann G.
Iceland.
On 21.11.2010, at 01:20, Chris Blackmore wrote:
>
>
Message 2
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| Subject: | Rough running cured with carb heater |
40F no doubt about it you had carb ice which obstructed the flow of fuel.
Let me guess your engine has an airbox feeding the carbs.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Jhann
Jhannsson
Sent: November 20, 2010 3:04 PM
Subject: RotaxEngines-List: Rough running cured with carb heater
=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?= <joeing701@simnet.is>
Hello list members.
I have a friend who has been having problems with the Rotax 912 UL in
a Kitfox 3. When flying today in a temp. around 40F, the engine ran
rough until he pulled the carb heat on. Ran very smooth and never as
good.
What do you think could cause this problem? We measured the carb
levels and they are very similar. 1/8 of an inch. One carb was
definitely running bad because the EGT dropped on one exhaust.
No carb ice and the carbs have been rebuild. Any ideas?
Johann G.
Iceland.
Zenith 701
Rotax 912UL.
Message 3
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| Subject: | Rough running cured with carb heater |
Apparently icing is mostly experienced with 912s which have the airbox.
Engines with direct filtration almost never experience ice... go figure.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Jhann
Jhannsson
Sent: November 20, 2010 7:55 PM
Subject: Re: RotaxEngines-List: Rough running cured with carb heater
=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?= <joeing701@simnet.is>
Thank you Gordon.
I know my friend has a new air filter and the airbox does eliminate
the cold air from the filter and only passes the hot air from the
exhaust pipe. We will look at the mixture setting.
Thanks again.
Johann G.
Iceland.
On 20.11.2010, at 22:49, Gordon wrote:
>
> Carb heat bypasses the air filter, at least on most set-ups, so
> maybe a clogged filter.
> It also introduces warm air which is less dense, so it could be that
> the mixture of one or both carbs is set to lean for the normal
> (cold) air --my guess.
> Gordon
> ----- Original Message ----- From: "Jhann Jhannsson"
<joeing701@simnet.is
> >
> To: <rotaxengines-list@matronics.com>
> Sent: Saturday, November 20, 2010 1:33 PM
> Subject: RotaxEngines-List: Rough running cured with carb heater
>
>
>> J=F3hann_J=F3hannsson?= <joeing701@simnet.is>
>>
>> Hello list members.
>>
>> I have a friend who has been having problems with the Rotax 912 UL
>> in a Kitfox 3. When flying today in a temp. around 40F, the
>> engine ran rough until he pulled the carb heat on. Ran very smooth
>> and never as good.
>> What do you think could cause this problem? We measured the carb
>> levels and they are very similar. 1/8 of an inch. One carb was
>> definitely running bad because the EGT dropped on one exhaust.
>> No carb ice and the carbs have been rebuild. Any ideas?
>>
>> Johann G.
>> Iceland.
>> Zenith 701
>> Rotax 912UL.
>>
>>
>>
>>
>
>
Message 4
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| Subject: | Re: Rough running cured with carb heater |
Hello all,
Yes Noel, my friend has the airbox on his Kitfox. He did a few checks
today as recommended by Roger and Gordon.
Carbs were adjusted and balanced. The mixture on the jet needles/
needle jets were enriched and are now in the bottom groove on the
needle.
The diaphragm is properly installed and the propeller is set for the
correct rpm. We even tried to remove the air hoses from the carbs to
eliminate carb ice. No change.
The engine runs fine on the low rpm but will not run smooth unless the
carb heat is used.
The needles are all standard as recommended by Rotax.
Any more advice will be really appreciated,
Best regards,
Johann G.
Iceland.
On 21.11.2010, at 15:57, Noel Loveys wrote:
> >
>
> Apparently icing is mostly experienced with 912s which have the
> airbox.
> Engines with direct filtration almost never experience ice... go
> figure.
>
> Noel
>
> -----Original Message-----
> From: owner-rotaxengines-list-server@matronics.com
> [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of
> Jhann
> Jhannsson
> Sent: November 20, 2010 7:55 PM
> To: rotaxengines-list@matronics.com
> Subject: Re: RotaxEngines-List: Rough running cured with carb heater
>
> =?ISO-8859-1?Q?J=F3hann_J=F3hannsson?= <joeing701@simnet.is>
>
> Thank you Gordon.
> I know my friend has a new air filter and the airbox does eliminate
> the cold air from the filter and only passes the hot air from the
> exhaust pipe. We will look at the mixture setting.
> Thanks again.
>
> Johann G.
> Iceland.
>
>
> On 20.11.2010, at 22:49, Gordon wrote:
>
>>
>> Carb heat bypasses the air filter, at least on most set-ups, so
>> maybe a clogged filter.
>> It also introduces warm air which is less dense, so it could be that
>> the mixture of one or both carbs is set to lean for the normal
>> (cold) air --my guess.
>> Gordon
>> ----- Original Message ----- From: "Jhann Jhannsson"
> <joeing701@simnet.is
>>>
>> To: <rotaxengines-list@matronics.com>
>> Sent: Saturday, November 20, 2010 1:33 PM
>> Subject: RotaxEngines-List: Rough running cured with carb heater
>>
>>
>>> J=F3hann_J=F3hannsson?= <joeing701@simnet.is>
>>>
>>> Hello list members.
>>>
>>> I have a friend who has been having problems with the Rotax 912 UL
>>> in a Kitfox 3. When flying today in a temp. around 40F, the
>>> engine ran rough until he pulled the carb heat on. Ran very smooth
>>> and never as good.
>>> What do you think could cause this problem? We measured the carb
>>> levels and they are very similar. 1/8 of an inch. One carb was
>>> definitely running bad because the EGT dropped on one exhaust.
>>> No carb ice and the carbs have been rebuild. Any ideas?
>>>
>>> Johann G.
>>> Iceland.
>>> Zenith 701
>>> Rotax 912UL.
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>
>
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