Today's Message Index:
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1. 07:49 AM - Removal Of 912 UL Gear Box (Hugh McKay)
2. 08:04 AM - Re: Removal Of 912 UL Gear Box (Roger Lee)
3. 10:45 AM - Clamp for the carb rubber socket (=?iso-8859-1?Q?J=F3hann_J=F3hannsson?=)
4. 11:14 AM - Re: Clamp for the carb rubber socket (John Hauck)
5. 01:25 PM - Re: Clamp for the carb rubber socket (Roger Lee)
6. 03:17 PM - Re: Re: Clamp for the carb rubber socket (John Hauck)
Message 1
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| Subject: | Removal Of 912 UL Gear Box |
Does the removal and reinstallation of the gear box on a 912 UL engine
require that the oil lubrication system be =9Cvented=9D
according to SI-04-1997 R3 before engine re-start?
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
Message 2
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| Subject: | Re: Removal Of 912 UL Gear Box |
No, no oil purge after a gearbox installation.
--------
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=428502#428502
Message 3
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| Subject: | Clamp for the carb rubber socket |
Hello Rotax list members.
Does anyone know where I can buy the clamp for the carburetor rubber
socket on the Rotax 912 engine. I do have the rubber sockets but no
clamp. Do not want to order the new rubber just to get the clamp.
Johann G.
Iceland.
.
Message 4
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| Subject: | Clamp for the carb rubber socket |
Johann:
Contact Ronnie Smith at South Mississippi Light Aircraft. He'll send you
one.
http://www.flysmla.com/
Hope all is well in Iceland.
john h
mkIII
Titus, Alabama
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Jhann
Jhannsson
Sent: Friday, August 15, 2014 12:45 PM
Subject: RotaxEngines-List: Clamp for the carb rubber socket
Hello Rotax list members.
Does anyone know where I can buy the clamp for the carburetor rubber socket
on the Rotax 912 engine. I do have the rubber sockets but no clamp. Do not
want to order the new rubber just to get the clamp.
Johann G.
Iceland.
.
Message 5
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| Subject: | Re: Clamp for the carb rubber socket |
How do you have new sockets without a new clamp? Rotax carb sockets come with clamps.
The old clamps are gold and the new clamps are silver. You can use the old clamp
if you put an 8mm spacer in on the screw. This will keep you from over tightening
the clamp.
I see you live in Iceland so some of the below may not apply.
I hope these new sockets aren't JBM carb sockets or some other aftermarket part.
I have seen several lately and they are not up to standard. The rubber gets
too soft when hot, the carbs do not snap into place near as well. I just had
a Sky Ranger in my shop. The clamps were down even past the 8mm safe stop. I put
my fingers against the carb while I was checking something and it came out
of the socket way to easily. I did the same to the other side and it did the same.
I showed the owner the difference on a Rotax carb flange and he made me change
his out back to a Rotax part. If you squeeze the out side ends of a JBM
socket it is very soft and squeezable when hot and the Rotax is not. The Rotax
rubber carb flange has deeper recessed groves so the carb seats in much tighter
and doesn't easily push out of the socket. The Rotax socket holds the carb
in better than the JBM even without the use of a clamp on the Rotax flange.
There will be a new article out on the Rotax-Owner forum blog shortly about liability
and aftermarket parts. It is worth reading. Even if you own an Experimental
aircraft(in the US) you can still be held liable for
sub-standard parts. It would be very easy to prove and hold you the owner up for
at least a partial liable payout. The MFG of the part will be on the hook, but
so would you.
--------
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=428526#428526
Message 6
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| Subject: | Re: Clamp for the carb rubber socket |
I hope these new sockets aren't JBM carb sockets or some other aftermarket
part. I have seen several lately and they are not up to standard.
Roger Lee
I fly a Kolb MKIII pusher with a 912S. I use JBM carb sockets and his
stainless steel exhaust springs (on a Titan exhaust system). The SS springs
are great. I bought a set of 5 (1 for a spare) several years ago to replace
the Rotax springs I had been using. Couldn't keep Rotax springs from
breaking.
The JBM sockets have been on the engine for a few years and a couple
trans-continental flights. They seem to be performing as good as the
original Rotax sockets. I had to change out the Rotax sockets after a few
years because they started failing. I first noticed black streaks on top
each intake manifold. Took a while to figure out the streaks were being
made by the decomposing Rotax sockets which had also developed deep cracks.
So far the JBM sockets are staying together.
I have to check to see if my JBM sockets are "soft and squeezable" when hot,
and if they are going to fall off when I least expect it. Getting ready to
fly from Alabama to the Rock House near Burns Junction, Oregon. I don't
want to lose a carb.
For the most part I do use Rotax repair parts. A few items I do not:
-Fram Tough Guard 3614 or 3600 oil filters (I can hear the gasps from here).
Been flying these since the beginning.
-VDO oil pressure sending units. Not the one that came in the engine.
-NGK Iridium Spark Plugs DCPR8EIX. I flew from Alabama to Sun and Fun this
year, plus local flying. Performance seems to be about the same. I haven't
had a chance to see if they help performance or not, but will get a better
look at them on my flight to Oregon and back.
I have had good luck with the 912 series engines. I have been flying them
on my present airplane since 1994. After more than 3,200.0 hours I have
never had an engine failure. Wish I could have said that about the two
strokes I flew.
john h
mkIII
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