Frans Veldman wrote:
Frans
It is generally noted that Lycosaurus type engines should never be run
at low load when breaking in, it glazes the bores so that the rings do
not bed in correctly. Rounded surface on the circumference perhaps? so
they start to pump oil? I would think the same principle applies to Rotax.
Graham
>
> Hi Karl,
>
>
>> Other changes I had made since then was to increase the air exit
>> area, close the gills, reduce the round opening on the stbd side by
>> 70%, and reduce the large naca scoop by 80%.
>>
>
> The naca scoop is only for the 914. We build a closed cabinet around it,
> where only the intake air filter resides. So the engine gets somewhat
> "pressurized" air. The 914 doesn't use the naca scoop for anything else,
> so you can safely scrap it on 912's.
>
>
>> More recently I replaced
>> the large main opening with a in-flight variable flap further down
>> and back from the original.
>>
>
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