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carl(at)flyers.freeserve. Guest
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Posted: Sun Jun 02, 2013 12:58 am Post subject: Carburettor Float Settings |
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Hi,
Has anyone used the proper Rotax tool for setting the float levels.
We have just overhauled the carburettors using the Bing overhaul kit (nearly £300 from Skydrive) – this was long overdue and should be done every 5 years. I assumed that the supplied float operating arm would be factory set but it seems this is not the case.
According to the maintenance manual, a special tool should be used which I understand can be hired from Skydrive for a nominal charge. Looking at the manual it looks as though the float arms need to be parallel to the main carb body but I could be wrong in this assumption.
The upshot of the overhaul has been a rough running engine which upon investigation looks like a weak mixture. Conrad Beales website says that if you remove the float bowls after running the engine the fuel level should be 1’8 “ (3mm) from the top of the bowl – we had nearer 8- 10 mm. Looks like we need to order up the setting tool and do the job properly.
So back to the original question – anyone used the adjustment tool and how easy was this. Failing this is there another better way.
I spoke briefly to Kevin Dilks and he suggested that the float arms should be parallel(as above) but I’m not sure this is a precise enough setting.
PS: thanks all for your comments on THROTTLE STOPS – I am inclined to agree with Duncan in his observation that the carb stops are the main ones that can be overridden by applying gentle backpressure on the throttle lever to give a usefully reduced RPM on descent – with the cockpit stop acting as the safety backup to prevent damaging the carb throttle arms etc.
From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of Duncan & Ami
Sent: 01 June 2013 08:53
To: europa-list(at)matronics.com
Subject: RE: Throttle Stops
Whilst complying with the LAA requirement for a throttle stop, it's useful to set up the cables so that the carb stops are reached first, followed closely by the stop on the throttle lever itself if the lever is deliberately pulled closed against the throttle lever stop. This limits any excess strain that can be applied to the cables, but provides a useful facility to temporarily pull down the idle speed in flight (which in any case will still always be well above the static setting, as the forward motion drives the prop). As soon as the deliberate backpressure on the lever is released, 'normal service' is resumed
This facility makes a usefully large addition to rate of descent and is helpful for landing in to short strips; it's like having an airbrake!
Duncan McF.
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rehn(at)rockisland.com Guest
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Posted: Sun Jun 02, 2013 8:37 am Post subject: Carburettor Float Settings |
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