Today's Message Index:
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1. 10:19 AM - Oil pressure/Flydat (Alan Twigg)
2. 12:03 PM - Rotax 912S/ULS 100hp oil consumption (JonathanMilbank)
3. 01:20 PM - Re: Rotax 912S/ULS 100hp oil consumption (Alan Burrill)
4. 02:12 PM - Re: Rotax 912S/ULS 100hp oil consumption (olihqt)
5. 04:36 PM - Re: Rotax 912S/ULS 100hp oil consumption (JonathanMilbank)
6. 09:48 PM - Re: Rotax 912S/ULS 100hp oil consumption (olihqt)
Message 1
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Subject: | Oil pressure/Flydat |
I am commissioning my engine and have an oil pressure problem.
Ie no oil pressure indicated on start.
I called CFS who appeared most helpful, telling me that I have the wrong sensor
for the Flydat. I bought the old style as recommended. No change.
I am an apprenticed Aero engine man of more than 50 years, so went back to my roots
and fitted a remote direct reading gauge. Positive 53psi at 56 degrees oil
temp. Still zero on the Flydat. What is the latest EIS, I am ready to junk the
Flydat.
Alan Twigg
Kit 463 Motorglider ( long wings) UK.
Sent from my iPad
Message 2
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Subject: | Rotax 912S/ULS 100hp oil consumption |
Today I was topping up the oil in the dry sump reservoir tank, after it had been
thoroughly and repeatedly gurgled/burped, thinking that my ULS engine uses a
lot more oil than my old UL 80hp engine did a few years ago. So I decided to
'phone a friend with an identical aircraft and engine, to ask him how much oil
he uses between 50hr oil and filter changes.
My friend in turn asked another owner and their joint reply was between 500ml and
1 litre per hour. This is about the same as what I think my engine is using,
maybe biased closer to 1 litre.
I'd be interested to know from any of you with the same engine, what you think
your average oil consumption is per 50 flying hours. Many thanks.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489768#489768
Message 3
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Subject: | Re: Rotax 912S/ULS 100hp oil consumption |
>>I'd be interested to know from any of you with the same engine, what you think
your average oil consumption is per 50 flying hours.<<
About 200ml
Alan
Sent from my iPad
> On 22 Jun 2019, at 20:02, JonathanMilbank <jdmilbank@yahoo.co.uk> wrote:
>
> I'd be interested to know from any of you with the same engine, what you think
your average oil consumption is per 50 flying hours. Many thanks.
Message 4
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Subject: | Re: Rotax 912S/ULS 100hp oil consumption |
Hi
Approximatly 8 cl for 50 hours for mine.
Olivier
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489770#489770
Message 5
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Subject: | Re: Rotax 912S/ULS 100hp oil consumption |
Olivier's answer of 80ml per 50 hours seems amazing. Should that be 800ml? Such
a low figure is what I would expect from the 912UL 80hp. But perhaps the engine
is quite new?
My engine has around 450 hours and doesn't leak oil. The spark plugs always look
dry with a light brown to white colour on the insulators. The exhaust pipe shows
a grey colour inside with no hint of oiliness. Oil pressure is very good
and oil temperature in the cruise is up around 90C.
The exhaust outlet pipe gases leave a slight light brown stain along the lower
left side of the fuselage, stretching along under and a little to the rear of
the left wing. This stain is easy to wipe off every 10 hours or so, using a rag
dampened with a little petrol. Very little oil, maybe 30ml collects in the tank
breather tube catch pot between oil changes.
In other words I can't see or understand where the oil is going. Up to 1 litre
per 50 flying hours may seem excessive to some of you but as stated already, others
seem to think that it's normal enough. 1 litre is almost exactly the same
as I US quart.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489772#489772
Message 6
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Subject: | Re: Rotax 912S/ULS 100hp oil consumption |
I confirm 80 ml max per 50 hours. I am very surprise during each check before flight.
The level is always the same. I complete the level with a syringe and
i put two times one syringe of 40 ml beetween each oil change (50 hrs).
My engine has 970 hours.
For information, Rotax say :consumption maximum of oil : 0.06 l/h...3 l per 50
hours!!
Good flight.
Olivier
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489773#489773
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