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Re: Re: Fuel

Subject: Re: Re: Fuel
From: Grahamclk@aol.com
Date: Wed, 11 Apr 2001 11:28:35
In a message dated 11/04/2001 09:52:25 GMT Daylight Time, 
john@crixbinfield.freeserve.co.uk forwarded:


> Nigel Beale, who sells the Rotax engines here in th UK, has shown me a head
> and valves from a 912 which used 100LL.  Both were heavily contaminated with
> yellow lead deposites to the extent that the valves could not operate
> properly.

Two years ago when returning from Cranfield I topped up half a tank of 
unleaded with 100LL.   Temperatures were higher on the return flight and 
after landing the engine  "detonated"  dangerously with the ignition off 
until the carbs. emptied..  The engine seemed to have conditioned itself to 
unleaded and I have never put anything else in it since.

Graham G-EMIN



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