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Pre-heating a Rotax?

 
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rparigor(at)suffolk.lib.n
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PostPosted: Mon Jan 23, 2006 6:51 pm    Post subject: Pre-heating a Rotax? Reply with quote

What are those flying doing to pre-heat your Rotax?

Nothing?

Forced air?

Water-heater? http://www.ultralightnews.ca/heaters/enginepreheater.htm

Some form of Tanis? http://www.tanisaircraft.com/

Or???
Thx.
Ron Parigoris


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paul.mcallister



Joined: 09 Jan 2006
Posts: 177
Location: Waukesha, WI USA

PostPosted: Mon Jan 23, 2006 7:55 pm    Post subject: Pre-heating a Rotax? Reply with quote

Ron,

I am using a Bob Reiff preheater. It has a patch on the block and a band
that goes around the oil tank. The heater on the oil tank has a thermostat
on it. With what I know now I think I would have just bought a couple of
heater pads from JC Whitney and made up a thermostat myself. I would have
cost me $90.00 instead of $200 some dollars.

With that said, the Bob Reiff product does the job quite nicely.

Paul


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europa(at)triton.net
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PostPosted: Tue Jan 24, 2006 5:36 pm    Post subject: Pre-heating a Rotax? Reply with quote

Talked to Andy about winter operations the other day. He suggested that the
Rotax is built with tolerances similar to an automobile engine and therefore
really doesn't need preheated. After all, do you preheat your car?

Also attended an aviation conference last week where it was suggested that
pulling an engine thru scrapes the oil from the cylinders - so you're better
off not doing that. Also, heating the oil will drive moisture out and it
deposits on the engine internals. Bottom line, don't do anything to the
engine. Change the oil frequently (at least each quarter of the year).

Jim Butcher
N241BW


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raimo.toivio(at)rwm.fi
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PostPosted: Thu Jan 26, 2006 7:54 am    Post subject: Pre-heating a Rotax? Reply with quote

All (on the northern hemisphere)!

---


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raimo.toivio(at)rwm.fi
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PostPosted: Fri Jan 27, 2006 2:21 am    Post subject: Pre-heating a Rotax? Reply with quote

Jeremy,

OK - of course you are technically right but same target.
When rich, catalytic converter cannot work as it should be.
In fact, it is possible to spoil it by a little but possibe amount
of rare petrol. And that is bad for your wallet and surrounding nature.
If preheated I am sure also cc gets earlier upp to operating
temperature and start to work sooner. When preheated,
the engine idle time is usually shorter and that is good for cc.
So, engine preheating also helps cc to save the world...

Wishes, Raimo (not Teimo)

---


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paul.mcallister



Joined: 09 Jan 2006
Posts: 177
Location: Waukesha, WI USA

PostPosted: Fri Jan 27, 2006 5:29 am    Post subject: Pre-heating a Rotax? Reply with quote

Guys,

For what its worth, I fly my aircraft in the winter in temperatures low as
15f. In addition to the engine heater I have a small electric blow heater
that I have connected up to domestic air-conditioning/heater thermostat
which keeps the cockpit at 50f. The main reason is so that the gyroscopic
instruments aren't being run at very cold temperatures, but is sure is nice
to get into a warm cockpit as well.

Paul


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raimo.toivio(at)rwm.fi
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PostPosted: Mon Jan 30, 2006 7:39 am    Post subject: Pre-heating a Rotax? Reply with quote

Jemmy,

my only statement was:

What so ever engine preheating is always valuable
and something what wise man should do if necessary.
And it is necessary when cold enough and he has not
heated garage...

It is like preplay with woman. Some do it and some never.
My honest recommendation - get happier life.

Regards, Raimo

do not archive

---


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Ivor Phillips



Joined: 16 Jan 2006
Posts: 253
Location: London UK

PostPosted: Thu Feb 09, 2006 3:01 am    Post subject: Pre-heating a Rotax? Reply with quote

It very similar to the kenlowe preheater i have been using on my Landrover
for the last fifteen years, Works a treat, Certainly improves battery drain
and starter motor wear!

http://www.kenlowe.com/pre-heaters/cars/index.html

Ivor Phillips
Quote:
While talking to the local Rotax dealer, he suggested a heat exchanger
instead of a thermostat and a separate oil cooler. On the attached (click
link for list users) picture is also an engine pre-heater visible. the
ribbed hose is the steel protected electrical cable. He promised me
dimensions and weight data. The exchanger in the picture is a
pre-production sample, the installation is on a 912 on an Eurostar.


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raimo.toivio(at)rwm.fi
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PostPosted: Thu Feb 09, 2006 3:39 am    Post subject: Pre-heating a Rotax? Reply with quote

Yes, I have decided to go for separate water-oil heat exchanger
with water thermostat and electric pre-heater.
System will be tested in the test-bench before final installation.
When stored in cold hangar, it can be always on.
The cockpit /panel will be also (pre)heated and that is good for
equipments. That is also what I have used to with cars.

Cheers, Raimo
---


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