Jeff,
Maybe it's just me, but it is supposed to be a known problem. I definitely
had trouble starting a hot engine, and the fuel is boiling or very hot.
Another heat source I would like to address is the exhaust pipes right
underneath the carburators. Maybe Graham S. can make a heatshield kit out of
that firewall material of his ?
I haven't seen the current Skydrive kit, maybe they made the collar smaller
? I will be much happier with a valve, as I still have the option to leave
it on during the colder seasons.
I didn't just install the carb heater, I have been using it for 5 years now.
Karl
>From: JEFF ROBERTS <jeff@rmmm.net>
>Reply-To: europa-list@matronics.com
>To: europa-list@matronics.com
>Subject: Re: Europa-List: Skydrive on/off control
>Date: Sun, 3 Sep 2006 11:09:25 -0500
>
>
>Karl,
>I use the Skydrive system on my 912-S and leave it on all the time. We
>haven't had any problems here in the USA mid south at 95 + degrees all
>summer. I have very long taxies at MQY. When the motors hot and I need to
>re-start, a little throttle as soon as you crank it and it takes off every
>time.
>Just my two cents,
>Regards,
>Jeff
>A258 Gold Rush 33.5 hrs of flying off the 40 and all the bugs seem to be
>gone ;)
>
>On Sep 3, 2006, at 6:09 AM, Karl Heindl wrote:
>
>>
>>
>>Tim,
>>
>>That is what I thought, but it is actually not true.
>>When on the ground, and you have a long taxi run, especially on a grass
>>field and/or on a very hot day, the hot coolant will cause the fuel to
>>boil in the carburator bowls. You can easily verify this by looking at the
>>clear carb vent tube through the stbd cowling door, and you will see the
>>fuel bubbling up into the airbox. You will not be able to start your
>>engine at this stage as the carbs are flooded. I've proven it by putting a
>>clamp on the coolant hose to stop circulation. The local Rotax agent
>>educated me about the Skydrive. He also claims that because the added
>>collar moves the carburator further from the engine, it contributes to
>>vibration problems.
>>And lastly, I don't believe that hot air and hot fuel going into the
>>combustion, does not affect engine performance. You have a 914, so you
>>wouldn't know.
>>
>>Best regards,
>>
>>karl
>>
>>
>>
>>
>>
>>>From: "Tim Ward" <ward.t@xtra.co.nz>
>>>Reply-To: europa-list@matronics.com
>>>To: <europa-list@matronics.com>
>>>Subject: Re: Europa-List: Skydrive on/off control
>>>Date: Sun, 3 Sep 2006 13:45:58 +1200
>>>
>>>
>>>Karl,
>>>Just keep the carb heat on all the time, no performance penalty. Having a
>>>switch is just another thing to go wrong and fix!
>>>Cheers,
>>>Tim
>>>Tim Ward
>>>12 Waiwetu Street,
>>>Fendalton,
>>>Christchurch, 8052
>>>New Zealand
>>>
>>>Ph +64 3 3515166
>>>Mobile 021 0640221
>>>ward.t@xtra.co.nz
>>>----- Original Message ----- From: "Karl Heindl" <kheindl@msn.com>
>>>To: <europa-list@matronics.com>
>>>Sent: Sunday, September 03, 2006 12:20 PM
>>>Subject: Europa-List: Skydrive on/off control
>>>
>>>
>>>>
>>>>
>>>>
>>>>Does anyone know of an inline valve, controlled electrically, for
>>>>controlling the coolant flow in the Skydrive carb heater ?
>>>>I know they exist for central heating systems, but are the wrong
>>>>voltage.
>>>>
>>>>thanks in advance,
>>>>
>>>>Karl
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
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