Karl,
That's interesting, many thanks. Firstly I do have the Rotax 912S.
Now I have seen evidence of fuel stains in the Plenum chamber and flowing up
the vent pipes. THAT MUST BE WHERE THE FUEL SMELL IS COMING FROM! The plenum
chamber has drain holes (for water) so it must be leaking out of those. I
have my Plenum chamber secured from underneath to the engine mount, (Classic
Monowheel engine mount) to help with the vibration problem. I that case I
think I will do as you have done and fix a cable to the on/off switch.
This hopefully will fix the fuel smell problem.
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>
Sent: Sunday, September 03, 2006 11:09 PM
Subject: Re: Europa-List: Skydrive on/off control
>
>
> 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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