Today's Message Index:
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1. 05:43 AM - Re: Hi CHT on the Rotax 912uls (bjones@dmv.com)
2. 06:40 AM - Re: Hi CHT on the Rotax 912uls (Roger Lee)
3. 09:11 AM - Re: Rotax 912 exhaust pipe repair (JohnE)
4. 09:16 AM - Re: Rotax 912 exhaust pipe repair (Thom Riddle)
Message 1
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| Subject: | Re: Hi CHT on the Rotax 912uls |
In a related matter, I have a Kitfox IV with 912 that has dual coolant
temp sending units and matched UMA gauges. The sending unit mounted in
the coolant line (supplied by Lockwood) reads about ten degrees cooler
than the sending unit and gauge combination mounted in the cylinder head.
I have switched wires between sending units and gauges just to make sure
there is not a discrepancy between sending units and gauges.
BJ Kitfox IV 80 hp 912
>
> A lot has been said about the 912uls cooling. I have had CHT temps over
> 240 degF for over 2 years in the summer. Not to red line but Not
> Comfortable to fly any distance with. I have over 1100 hours on my Kitfox
> S7 and my Evans "lifetime" coolant and was ready for a change. I read an
> article, (I think by Roger) about using 50/50 Antifreeze instead of Evans
> would reduce bring the temps by 25 to 30 degrees.
>
> It works!!!! My CHT and Coolant Temp are down 25 degrees today with the
> same OAT as when they were in the 240 range. I am ready to take a summer
> trip again. BTW, I chose Prestone DexCool (Orange). Thanks Roger
>
> --------
> Rich Little
> N812RL S-7 912ULS
> North Idaho
> Kiev Prop
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=402577#402577
>
>
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| Subject: | Re: Hi CHT on the Rotax 912uls |
There will be a few degrees difference. One is reading the actual water temp at
that specific point and the other the metal temp at a totally different point.
Rotax considers anything like your 10 degrees to be more or less the same.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=402609#402609
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| Subject: | Re: Rotax 912 exhaust pipe repair |
Thom Riddle wrote:
> John,
>
> After you get the tube repaired, make sure you do a pneumatic synchronization
of the carbs. Unbalanced carbs add a lot of unnecessary vibration to the whole
powerplant. Our DA20-A1 has 1100+ hours on its second engine (F3) and no cracks.
I check the balance during every annual inspection.
Hi Thom,
Thanks for the advice. I'm using the downtime to send my carbs in for overhaul
and then will do a pneumatic synch when I get them back. My engine seems pretty
smooth, but in aviation, smooth is relative. :-)
Good to hear from another DA20-A1 owner. There are not too many left in the US.
-John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=402623#402623
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| Subject: | Re: Rotax 912 exhaust pipe repair |
...There are not too many left in the US....
Quite true. Many DA20-A1 owners sold them to buyers in Europe where their excellent
fuel economy and Rotax engines are considered virtues.
--------
Thom Riddle
Buffalo, NY (9G0)
Don't worry about old age... it doesn't last very long.
- Anonymous
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=402624#402624
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