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venting cooling system 912S

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graeme bird

Joined: 15 Jul 2010
Posts: 434

Posted: Sun Sep 25, 2011 10:58 am Post subject: venting cooling system 912S

I seem to recall seeing somewhere how to vent the cooling system to remove potential air bubbles but cant find it. I have been doing some engine runs while waiting for permission to test fly and it seems to be getting pretty warm - water to 120 C after around 20 mins at 2200 rpm and I wondered if there is air in the system or if that is normal.



Am I right in thinking you slip up the port side radiator connection rubber and drill a small hole on the rad flange?

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_________________
Graeme Bird
kit4 (Wagstaff) TBD
Kit3 G-CLXU (Gregory) mono 914 xs Woodcomp
Kit2 G-PATS - (kesterton) Mono Classic 912 warpdrive
Kit 1 G-UMPY - Mono Classic/XS 912S, Woodcomp G(@)gdbmk.co.uk

grahamsingleton(at)btinte
Guest

Posted: Sun Sep 25, 2011 3:09 pm Post subject: venting cooling system 912S

Graeme

yes you are right, if memory serves it was referred to as "Nev's Orifice"

If the swirl pot is higher than the radiator you won't need it but it's awkward on a Classic

Graham



From: graeme bird <graeme(at)gdbmk.co.uk>

To: europa-list(at)matronics.com

Sent: Sunday, 25 September, 2011 19:58:05

Subject: Europa-List: venting cooling system 912S



--> Europa-List message posted by: "graeme  bird" <graeme(at)gdbmk.co.uk (graeme(at)gdbmk.co.uk)>



I seem to recall seeing somewhere how to vent the cooling system to remove potential air bubbles but cant find it. I have been doing some engine runs while waiting for permission to test fly and it seems to be getting pretty warm - water to 120 C after around 20 mins at 2200 rpm and I wondered if there is air in the system or if that is normal.



Am I right in thinking you slip up the port side radiator connection rubber and drill a small hole on the rad flange?



--------

Graeme Bird

G-UMPY

Mono Classic/XS FWFD 912ULS/Warp drive FP

Build nearing completion





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graeme bird

Joined: 15 Jul 2010
Posts: 434

Posted: Mon Sep 26, 2011 9:10 am Post subject: Re: venting cooling system 912S

Graham, I have XS FWFD, and the rad is under the engine, and filler pot on top, so presumably I dont need to worry?

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