Many thanks Brian for the info..... I'm relieved to hear that others are
seeing the same, and that Rotax actually published something on it.
Cheers and blue skies :-)
(and I'm leaving the orifice as per the Europa size)
On Fri, Dec 4, 2020 at 8:30 AM Brian Davies <brian.davies44@gmail.com>
wrote:
> Hi Pete
>
> If you are running the latest mechanical fuel pump I think you will find
> that Rotax have published information that states a brief drop in fuel
> pressure is =9Cnormal=9D. I have never understood why this s
hould be =9Cnormal=9D
> but
>
>
> I don=99t think it is linked to the size of the return line orifice
.
>
>
> Regards
>
>
> Brian
>
>
> *From:* owner-europa-list-server@matronics.com <
> owner-europa-list-server@matronics.com> *On Behalf Of *Pete Zut
> *Sent:* 04 December 2020 12:40
> *To:* europa-list <europa-list@matronics.com>
> *Subject:* Europa-List: 912ULS fuel return line orifice size
>
>
> Hi Folks,
>
>
> I'm currently re-doing my fuel lines and configuration and have discovere
d
> my return orifice was made at 1/32" or 0.68mm which is twice the size of
> the spec'd rotax 0.33 mm or 1/64". It may explain why whenever I turned
> the electric pump off the pressure would drop to near zero for a couple
> seconds before recovering to the expected 4-5psi.
>
>
> Curious what size other folks are running? 0.33mm?
>
>
> Cheers and thanks,
>
> Pete Z.
>
>
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