Hi Duncan,
I'm sorry, but I haven't really paid that much attention to the specific
temperature that could be used as a go/no-go threshold. I do know we
still had problems starting when the temp was just below 50 degC (the
max readable on our carb temp gauge). If I had to guess, I would say 35
degC might be a reasonable threshold.
I do know that what we have had carb ice, the carb temp has been in the
vicinity of +2 degC.
regards,
Terry
Duncan McFadyean wrote:
>
> I seem to have hot start problems at carb temps. above about 35C; what
> 'threshold' have you experienced (other than somewhere above 50C)?
>
> Duncan McF.
> ----- Original Message -----
> From: "Terry Seaver" <terrys@cisco.com>
> To: <europa-list@matronics.com>
> Subject: Re: RE : Europa-List: Carb Icing
>
>
>
>>
>>We have had problems with hot starts on hotter days, you could smell the
>>gas getting boiled out of the carbs. Starting was difficult until the
>>engine cooled down (we learned to watch the carb heat gauge). Turning
>>off the carb heat immediately after exiting the runway helped a lot with
>>the hot starting. By the time we got back to the hanger, the carb heat
>>would be down to nearly ambient, vs well above 50 degC if the carb heat
>>is left on (the carb heat gauge does not register about 50 degC). We
>>normally run auto gas, which may make the problem worse because of its
>>lower vapor pressure/boiling temp compared to 100LL.
>>
>>Terry
>>
>>JEFF ROBERTS wrote:
>>
>>>
>>>Like so many others I didn't fit a tap. Thought leaving it on couldn't
>>>hurt anything. Does it need to be off for a hot start?
>>>Jeff
>>>A258
>>>
>>>On Jan 21, 2005, at 11:19 AM, Terry Seaver wrote:
>>>
>>>
>>>
>>>>
>>>>The 912S with XS cold air plenum can DEFINITELY get carb ice, don't
>>>>doubt it for a moment, both on the ground and in the air. The Skydrive
>>>>carb heat clears the ice quickly once turned on. We only turn it off
>>>>when we expect to do a hot start after a flight, letting the carbs cool
>>>>on the taxi to the ramp after landing.
>>>>
>>>>Terry Seaver
>>>>A135 / N135TD
>>>>
>>>>NEEL Jean Philippe wrote:
>>>>
>>>>
>>>>><jeanphilippeneel@yahoo.fr>
>>>>>
>>>>>No doubt: every system works!
>>>>>Why?Because I think 912 does not know carb icing. 600h flying in the
>>>>>alps in summer and winter I never had icing troubles at low descent
>>>>>rate (1000ft/min max and 4000rpm mini.)
>>>>>I am afraid there is often confusion beteewn carb icing and misfiring
>>>>>or fuel alimentation .
>>>>>May be that's not true for 912S
>>>>>Jean Philipppe
>>>>>
>>>>>
>>>>>mau11 <mau11@free.fr> wrote:
>>>>>
>>>>>Hello,
>>>>>I know this system, the big problem is the permanent upload charge of
>>>>>electrical network during service 60w.
>>>>>
>>>>>Personnaly I use Skydrive since 250 hours (I am very happy)and the two
>>>>>main advantage are:
>>>>>1 no electrical consumption
>>>>>2 Permanent service (I had a valve into the cowling for shut down but
>>>>>I
>>>>>never used)
>>>>>
>>>>>Monowheel N145
>>>>>
>>>>>--|--
>>>>>--------(*)--------
>>>>>
>>>>>Michel AUVRAY
>>>>>
>>>>>
>>>>>-----Message d'origine-----
>>>>>De : owner-europa-list-server@matronics.com
>>>>>[mailto:owner-europa-list-server@matronics.com] De la part de Carl
>>>>>Pattinson
>>>>>Envoy : vendredi 21 janvier 2005 00:26
>>>>>: europa-list@matronics.com
>>>>>Objet : Europa-List: Carb Icing
>>>>>
>>>>>
>>>>>-->
>>>>>
>>>>>I recently commented on the Skydrive vs the ST Aviation carb heater
>>>>>option.
>>>>>
>>>>>Here is the link for the ST version. There is a photo showing how it
>>>>>is
>>>>>fitted.
>>>>>
>>>>>http://www.jabiru.co.uk/IceEliminator.htm
>>>>>
>>>>>
>>>>>
>>>>>---------------------------------
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>
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