Today's Message Index:
----------------------
1. 03:06 AM - Re: Hard start 912ULS (=?iso-8859-1?Q?J=F3hann_J=F3hannsson?=)
2. 04:32 AM - Re: Hard start 912ULS (David Weaver)
3. 05:00 AM - Re: Hard start 912ULS (Hugh McKay)
4. 06:31 AM - Re: Hard start 912ULS (David Weaver)
5. 06:52 AM - Re: Hard start 912ULS (Bob Comperini)
6. 07:30 AM - Re: Hard start 912ULS (Roger Lee)
7. 03:13 PM - ACS Ignition Switch (David Weaver)
Message 1
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| Subject: | Re: Hard start 912ULS |
Hello John.
I had the same experience with my 912 UL starting. It turned out to be the starter
like you suspect. Just to make sure, remove the starter and open it up. You
will see some burned wire windings. This could happen if you let the started
turn for too long.
I replaced the starter with the "heavy duty" starter and everything has been working
great since.
Hope this helps,
Johann G.
Iceland.
Zenith 701.
On 27.5.2013, at 03:04, johnelling wrote:
>
> Starting my 912 has been increasingly difficult. it seems as if the starter
has a hard time turning over the engine (it is a high-torque version). I thought
it was a weak battery but the problem persists even if I add battery capacity.
>
> The last two attempts it sounds like the Bendix is not engaging much at all.
Just a gear grinding sound and no prop turns.
>
> I suspect the starter motor. Anyone have another idea of something at which
I should be looking and/or testing?
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=401401#401401
>
>
>
>
>
>
>
>
>
>
Message 2
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| Subject: | Re: Hard start 912ULS |
I would highly recomend Sky Tech as a source for your starter.- They adve
rtise lower cost, lower current draw, higher torque and lighter weight.-
I am very pleased with my Sky Tech starter upgrade which was done to improv
e winter time engine start-up.
Dave Weaver N912GR
--- On Mon, 5/27/13, J=F3hann J=F3hannsson <joeing701@simnet.is> wrote:
From: J=F3hann J=F3hannsson <joeing701@simnet.is>
Subject: Re: RotaxEngines-List: Hard start 912ULS
hannsson?= <joeing701@simnet.is>
Hello John.
I had the same experience with my 912 UL starting. It turned out to be the
starter like you suspect. Just to make sure, remove the starter and open it
up. You will see some burned wire windings. This could happen if you let t
he started turn for too long.
I replaced the starter with the "heavy duty" starter and everything has bee
n working great since.
Hope this helps,
Johann G.
Iceland.
Zenith 701.
On 27.5.2013, at 03:04, johnelling wrote:
com>
>
> Starting my 912 has been increasingly difficult.- it seems as if the st
arter has a hard time turning over the engine (it is a high-torque version)
.- I thought it was a weak battery but the problem persists even if I add
battery capacity.-
>
> The last two attempts it sounds like the Bendix is not engaging much at a
ll.- Just a gear grinding sound and no prop turns.-
>
> I suspect the starter motor.- Anyone have another idea of something at
which I should be looking and/or testing?
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=401401#401401
>
>
>
>
>
>
>
>
>
>
le, List Admin.
Message 3
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| Subject: | Re: Hard start 912ULS |
Dave,
Is the Sky Tech firm you recommend located at the Rock Hill airport in
SC?
Hugh G. McKay III, P.E.
Senior Consultant
Worldwide Engineering Inc.
4090 North NC Hwy. 16
Denver, NC 28037
Ph. 704-661-8271
Fax 704-483-5466
email hgmckay@bellsouth.net
http://www.wwegeo.com
From: David Weaver
Sent: Monday, May 27, 2013 7:31 AM
Subject: Re: RotaxEngines-List: Hard start 912ULS
I would highly recomend Sky Tech as a source for your starter.
They advertise lower cost, lower current draw, higher torque and lighter
weight. I am very pleased with my Sky Tech starter upgrade which was
done to improve winter time engine start-up.
Dave Weaver N912GR
--- On Mon, 5/27/13, J=F3hann J=F3hannsson <joeing701@simnet.is>
wrote:
From: J=F3hann J=F3hannsson <joeing701@simnet.is>
Subject: Re: RotaxEngines-List: Hard start 912ULS
To: rotaxengines-list@matronics.com
Date: Monday, May 27, 2013, 5:06 AM
=?iso-8859-1?Q?J=F3hann_J=F3hannsson?= <joeing701@simnet.is>
Hello John.
I had the same experience with my 912 UL starting. It turned out
to be the starter like you suspect. Just to make sure, remove the
starter and open it up. You will see some burned wire windings. This
could happen if you let the started turn for too long.
I replaced the starter with the "heavy duty" starter and
everything has been working great since.
Hope this helps,
Johann G.
Iceland.
Zenith 701.
On 27.5.2013, at 03:04, johnelling wrote:
<jelling@newmexico.com>
>
> Starting my 912 has been increasingly difficult. it seems as
if the starter has a hard time turning over the engine (it is a
high-torque version). I thought it was a weak battery but the problem
persists even if I add battery capacity.
>
> The last two attempts it sounds like the Bendix is not
engaging much at all. Just a gear grinding sound and no prop turns.
>
> I suspect the starter motor. Anyone have another idea of
something at which I should be looking and/or testing?
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=401401#401401
>
>
>
>
>
>
>
>
>
> ?RotaxEngines-List"
target=_blank>http://www.matronics.com/Navigator?Rotasp;
- MATRONICS WEB FO/" ; -Matt Dralle, List
Admin=========
Message 4
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| Subject: | Re: Hard start 912ULS |
I ordered my Sky Tech starter through Air Spruce.- I do not know where th
e compay is located but use of on-line search engine will disclose that.-
My 912-UL engine cranks like it is on steroids.
Dave Weaver
--- On Mon, 5/27/13, Hugh McKay <hgmckay@bellsouth.net> wrote:
From: Hugh McKay <hgmckay@bellsouth.net>
Subject: Re: RotaxEngines-List: Hard start 912ULS
Dave,
-
Is the Sky Tech firm you recommend located at the Rock Hill airport in SC?
-
Hugh G. McKay III, P.E.
Senior Consultant
Worldwide Engineering Inc.
4090 North NC Hwy. 16
Denver, NC 28037
Ph. 704-661-8271
Fax 704-483-5466
email hgmckay@bellsouth.net
http://www.wwegeo.com
-
From: David Weaver
Sent: Monday, May 27, 2013 7:31 AM
Subject: Re: RotaxEngines-List: Hard start 912ULS
-
I would highly recomend Sky Tech as a source for your starter.- They adve
rtise lower cost, lower current draw, higher torque and lighter weight.-
I am very pleased with my Sky Tech starter upgrade which was done to improv
e winter time engine start-up.
Dave Weaver N912GR
--- On Mon, 5/27/13, J=F3hann J=F3hannsson <joeing701@simnet.is> wrote:
From: J=F3hann J=F3hannsson <joeing701@simnet.is>
Subject: Re: RotaxEngines-List: Hard start 912ULS
hannsson?= <joeing701@simnet.is>
Hello John.
I had the same experience with my 912 UL starting. It turned out to be the
starter like you suspect. Just to make sure, remove the starter and open it
up. You will see some burned wire windings. This could happen if you let t
he started turn for too long.
I replaced the starter with the "heavy duty" starter and everything has bee
n working great since.
Hope this helps,
Johann G.
Iceland.
Zenith 701.
On 27.5.2013, at 03:04, johnelling wrote:
com>
>
> Starting my 912 has been increasingly difficult.- it seems as if the st
arter has a hard time turning over the engine (it is a high-torque version)
.- I thought it was a weak battery but the problem persists even if I add
battery capacity.-
>
> The last two attempts it sounds like the Bendix is not engaging much at a
ll.- Just a gear grinding sound and no prop turns.-
>
> I suspect the starter motor.- Anyone have another idea of something at
which I should be looking and/or testing?
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=401401#401401
>
>
>
>
>
>
>
>
>
> ?RotaxEngines-List" target=_blank>http://www.matronics.com/Navigator?Ro
tasp;------------- - MATRONICS WEB FO/" ;--
------------ -Matt Dralle, List Admin====
=====
href="http://www.matronics.com/Navigator?RotaxEngines-List">http://www.ma
tronics.com/Navigator?RotaxEngines-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 5
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| Subject: | Re: Hard start 912ULS |
On 06:31 AM 5/27/2013, David Weaver wrote:
>I ordered my Sky Tech starter through Air Spruce. I do not know where the compay
is located but use of on-line search engine will disclose that. My 912-UL
engine cranks like it is on steroids.
http://www.skytecair.com/LSA.htm
--
Bob Comperini
e-mail: bob@fly-ul.com
WWW: http://www.fly-ul.com
Message 6
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| Subject: | Re: Hard start 912ULS |
The other item that would help is what year engine Mfg is this and its hours? Did
you actually try a new battery? Does it sound like the starter whirls, but
the engine kind of lags behing or stops turning even when the starter is still
turning.
If the starter is turning fine then it is your sprag clutch associated with the
starter and engine start. If people ever get kick back or turn their props backward
it will trash the sprag clutch. The higher torque Rotax starter is gold
in color and the older style is black. The black one isn't bad for the UL, but
the ULS should have the high torque gold one. Changing the sprag will will encompass
removal of the electrical end assembly.
--------
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=401411#401411
Message 7
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| Subject: | ACS Ignition Switch |
During a take off run, following a mag check for normal RPM drop, the engin
e miss-fired continuously following rotation and lift off.- I immediately
pulled back on throttle and let the 912 XP settle for landing.- I-ran
off-the end of runway (2,400 Feet)-with no damage.- Transition-from
runway end to-farmer's freshly planted field was smooth (large wheel opt
ion on Pulsar).- The problem turned out to be my failure to return the ig
nition switch to full right position detente between "left" and "both" posi
tions.- Though I initially had full power at the beginning of the take-of
f run, vibration may have caused enough of a change in switch contact posit
ion to-lead to-the problem.- When the Pulsar rolled to a stop, I sat
quietly and reviewed my procedure and discovered the problem with the key p
osition.- The problem has not reoccurred since that eventful flight.- I
t seems logical that spring loading in the switch, if provided,-should ca
use-the
selector to-prefer one detente or-the nearest-and not settle on a mi
d-position between detentes?
Dave Weaver N912GR
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