Today's Message Index:
----------------------
1. 04:16 AM - alternative carb for 912 (Thom Riddle)
2. 05:09 AM - Re: alternative carb for 912 (Matt Tucciarone)
3. 07:24 AM - EGT Temps (george may)
4. 09:13 AM - Re: EGT Temps (Ollie Washburn)
5. 09:13 AM - 912 voltage? (Les Goldner)
6. 10:31 AM - Rotax 912 - interesting observation (Thilo Kind)
7. 10:41 AM - Re: 912 voltage? (lucien)
8. 10:46 AM - Re: Rotax 912 - interesting observation (lucien)
9. 10:55 AM - Re: 447 mid-range rough running (Dave Kulp)
10. 02:11 PM - Re: EGT Temps (george may)
11. 10:21 PM - Re: EGT Temps (Kitfox George)
Message 1
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| Subject: | alternative carb for 912 |
Has anyone on this list every tried adapting a different carburetor (single) to
the Rotax 912 series engine? If so, I'd like to hear anything/everything you've
learned in the process?
--------
Thom Riddle
Buffalo, NY
http://riddletr.googlepages.com/sportpilot-cfi
http://riddletr.googlepages.com/a%26pmechanix
A complex system that works is invariably found to have evolved from a simple system
that works.
- John Gaule
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=244342#244342
Message 2
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| Subject: | alternative carb for 912 |
There was a guy, who is form California, who sells a fuel injection bolt on
for the 912 and 914 but it cost about $8,000. I was talking to him at Sun
and Fun. He uses some of the military stuff that comes off of the predator
drones.
He says his 914 puts out 150hp.
Cool idea but if you bolt one of these things on you engine, forget about
any support from Rotax.
Has anyone on this list every tried adapting a different carburetor (single)
to the Rotax 912 series engine? If so, I'd like to hear anything/everything
you've learned in the process?
--------
Thom Riddle
Buffalo, NY
http://riddletr.googlepages.com/sportpilot-cfi
http://riddletr.googlepages.com/a%26pmechanix
A complex system that works is invariably found to have evolved from a
simple system that works.
- John Gaule
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=244342#244342
Message 3
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Can someone tell me what the expected max and min temperatures for EGT on t
he 912uls. Trying to set up my Dynon---
Thanks
George May
601XL 912s
_________________________________________________________________
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CHT----275
170-230
OIL T--265 max
190-230
OIL P--
30-73
FUEL P--
2.2--5.8
H2O--275 max/Evans
EHT--1615 max
1560 Cr max
RPM--5800
48K-5500
IDLE MIN
1600
Ollie
On Sun, May 17, 2009 at 10:23 AM, george may <gfmjr_20@hotmail.com> wrote:
>
> Can someone tell me what the expected max and min temperatures for EGT on
> the 912uls. Trying to set up my Dynon---
>
> Thanks
> George May
> 601XL 912s
>
> ________________________________
> Insert movie times and more without leaving Hotmail. See how.
>
>
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I am a sport pilot and don't fly at night, but went up in my experimental
Zenith Rotax 912 powered ship last evening. With all the extra night time
stuff on (strobe, landing light (55watt), & cabin lights) the voltage went
down to 11.9 at 3500-rpm and 12.3V at my 4900-rpm cruse. Is this normal or
do I have voltage regulation issues? Without the extra load my voltage runs
about 12.9-13.0 V and my battery is holding 12.8V when I fly during the day.
I don't have an alternator and just use the Rotax coils for power.
Thanks for your advice.
Les
Message 6
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| Subject: | Rotax 912 - interesting observation |
Hi folks,
went to the airfield today for a short flight with my Zodiac CH 601 HDS with
Rotax 912 UL. During the pre-flight two of my flying buddies came up. One of
them started to turn the prop for the oil check. He remarked how 'easy' it
was to turn the prop. His plane is also equipped with a 912 UL, but the
compression stroke is much, much more pronounced on his airplane. We
actually did a side-by side comparison.
My engine (120 hours) has been like this since new. It runs fine; the Zodiac
is one of the faster ones in this class. I haven't checked the compression
yet, but oil consumption is very low (no need to re-fill between annuals).
Fuel consumption is also in the normal range. I believe the engine is just
fine. However, does anybody have an explanation for that?
Thanks
Thilo
Message 7
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| Subject: | Re: 912 voltage? |
lgold(at)quantum-associat wrote:
> I am a sport pilot and dont fly at night, but went up in my experimental Zenith
Rotax 912 powered ship last evening. With all the extra night time stuff on
(strobe, landing light (55watt), & cabin lights) the voltage went down to 11.9
at 3500-rpm and 12.3V at my 4900-rpm cruse. Is this normal or do I have voltage
regulation issues? Without the extra load my voltage runs about 12.9-13.0
V and my battery is holding 12.8V when I fly during the day. I dont have an alternator
and just use the Rotax coils for power.
> Thanks for your advice.
> Les
>
Yep, sounds normal to me. The 912 alternator is capable of only about 250W output
and probably does less than that on a continuous basis. I get about the same
readings when I have my whelen strobes and landing light going. The lighting
coil alternator is only able to keep up with my panel/radio and my strobes and
that's about it. Once I turn on more stuff it falls behind and starts getting
into the battery (i.e. drops below 12V and into the 11's).
Keep in mind also that the stock Ducati voltage regulator that comes with the 912
is a piece of junk, it can't take continuous high duty-cycle operation for
long periods of time - at continuous loads like that it'll eventually literally
burn out. I.e. put your hand on it after a flight with all your electrics on
it and it'll be smoking hot.
I'm working on a computer fan installation to put over mine, supposedly extra cooling
will help keep it from smoking it's little garbagy, 170 buck self to death....
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=244400#244400
Message 8
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| Subject: | Re: Rotax 912 - interesting observation |
thilo.kind(at)gmx.net wrote:
> Hi folks,
>
> went to the airfield today for a short flight with my Zodiac CH 601 HDS with
> Rotax 912 UL. During the pre-flight two of my flying buddies came up. One of
> them started to turn the prop for the oil check. He remarked how 'easy' it
> was to turn the prop. His plane is also equipped with a 912 UL, but the
> compression stroke is much, much more pronounced on his airplane. We
> actually did a side-by side comparison.
>
> My engine (120 hours) has been like this since new. It runs fine; the Zodiac
> is one of the faster ones in this class. I haven't checked the compression
> yet, but oil consumption is very low (no need to re-fill between annuals).
> Fuel consumption is also in the normal range. I believe the engine is just
> fine. However, does anybody have an explanation for that?
>
> Thanks
>
> Thilo
Does your friend have the 100 horse version? I.e. the 912ULS? That motor has a
bigger bore and higher compression so it should be stiffer than the 912UL by a
fair bit.
Even so, on my 912ULS, one cylinder always feels really soft when cranking it over,
but the compressions have always measured perfect and the motor runs fine.
I'd do a leak down on it if you're concerned about it just to make sure everything's
ok....
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=244401#244401
Message 9
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| Subject: | Re: 447 mid-range rough running |
Folks,
Thanks lots for the info about the mid-range roughness. I now have some
experience to go on whereas before I had about zero. Next week I'll go
over it with the recs I've gotten from you and if it still doesn't run
well the carb comes off for overhaul.
Also, the method of installing the spring is great. That's one of those
"why didn't I think of that" deals. Thanks so much!
Best,
Dave Kulp
Message 10
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Thanks Ollie----that's what I needed
> Date: Sun=2C 17 May 2009 11:57:29 -0400
> Subject: Re: RotaxEngines-List: EGT Temps
> From: ollies7s@gmail.com
> To: rotaxengines-list@matronics.com
>
om>
>
> CHT----275
> 170-230
> OIL T--265 max
> 190-230
> OIL P--
> 30-73
> FUEL P--
> 2.2--5.8
> H2O--275 max/Evans
> EHT--1615 max
> 1560 Cr max
> RPM--5800
> 48K-5500
> IDLE MIN
> 1600
> Ollie
>
>
>
>
>
>
>
> On Sun=2C May 17=2C 2009 at 10:23 AM=2C george may <gfmjr_20@hotmail.com>
wrote:
> >
> > Can someone tell me what the expected max and min temperatures for EGT
on
> > the 912uls. Trying to set up my Dynon---
> >
> > Thanks
> > George May
> > 601XL 912s
> >
> > ________________________________
> > Insert movie times and more without leaving Hotmail=AE. See how.
> >
> >
> >
>
>
===========
===========
===========
===========
>
>
>
_________________________________________________________________
Hotmail=AE has a new way to see what's up with your friends.
http://windowslive.com/Tutorial/Hotmail/WhatsNew?ocid=TXT_TAGLM_WL_HM_Tut
orial_WhatsNew1_052009
Message 11
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EGT for 912=0A=0ARotax Installation Manual under exhaust systems section 11
.2=0A=0AEGT:=0ANormal---- 1470 f=0AMax--- ---- 1560 f
=0ATake off--- 1616 f=0AGeorge =0A=0A=0ASport Model - 914 / painting
complete 5/1/09=0Ado not archive =0A=0A=0A=0A=0A___________________________
_____=0AFrom: george may <gfmjr_20@hotmail.com>=0ATo: rotaxengines-list@mat
ronics.com=0ASent: Sunday, May 17, 2009 2:10:05 PM=0ASubject: RE: RotaxEngi
nes-List: EGT Temps=0A=0AThanks Ollie----that's what I needed=0A=0A> Date:
Sun, 17 May 2009 11:57:29 -0400=0A> Subject: Re: RotaxEngines-List: EGT Tem
ps=0A> From: ollies7s@gmail.com=0A> To: rotaxengines-list@matronics.com=0A>
il.com>=0A> =0A> CHT----275=0A> 170-230=0A> OIL T--265 max=0A> 190-230=0A>
OIL P--=0A> 30-73=0A> FUEL P--=0A> 2.2--5.8=0A> H2O--275 max/Evans=0A> EHT-
-1615 max=0A> 1560 Cr max=0A> RPM--5800=0A> 48K-5500=0A> IDLE MIN=0A> 1600
=0A> Ollie=0A> =0A> =0A> =0A> =0A> =0A> =0A> =0A> On Sun, May 17, 2009 at 1
0:23 AM, george may <gfmjr_20@hotmail.com> wrote:=0A> >=0A> > Can someone t
ell me what the expected max and min temperatures for EGT on=0A> > the 912u
ls. Trying to set up my Dynon---=0A> >=0A> > Thanks=0A> > George May=0A> >
601XL- 912s=0A> >=0A> > ________________________________=0A> > Insert mov
ie times and more without leaving Hotmail=AE. See how.=0A> >=0A> >=0A> >=0A
>====================0A> =0A> =0A>
=0A=0A________________________________=0AHotmail=AE has a new way to see wh
-========================
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