Today's Message Index:
----------------------
1. 12:51 AM - Re: Rotax 914 Turbo Warning Lights (Alan Carter)
2. 01:36 AM - Re: Re: Rotax 914 Turbo Warning Lights (Ivor Phillips)
3. 03:19 AM - Re: Re: Rotax 914 Turbo Warning Lights (David Joyce)
4. 05:42 AM - Re: Uneven Mag Drop 912 ULS (Catz631@aol.com)
5. 06:05 AM - Re: Uneven Mag Drop 912 ULS (Roger Lee)
6. 06:11 AM - Re: Uneven Mag Drop 912 ULS (JohnF)
7. 06:16 AM - Re: Uneven Mag Drop 912 ULS (JohnF)
8. 06:24 AM - Re: Uneven Mag Drop 912 ULS (Richard Kelley)
9. 07:01 AM - Re: Uneven Mag Drop 912 ULS (Pete Christensen)
10. 07:08 AM - Re: Re: RotaxEngines-List Digest: 3 Msgs - 05/24/14 (Richard Girard)
11. 10:15 AM - Re: Re: Uneven Mag Drop 912 ULS (FLYaDIVE)
12. 10:44 AM - Re: Uneven Mag Drop 912 ULS (William Daniell)
13. 11:07 AM - Re: Uneven Mag Drop 912 ULS (JohnF)
14. 01:19 PM - Re: Re: Uneven Mag Drop 912 ULS (FLYaDIVE)
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| Subject: | Re: Rotax 914 Turbo Warning Lights |
Hello Ivor.
Looks like Lydd is going to become more active know Manston is closed.
I would like to fit an indicator the same as you have done, sounds a good idea,
is there something you can drill and attach to the filler cap.
Can you give some info on this.
Regards.
Alan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=423797#423797
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| Subject: | Re: Rotax 914 Turbo Warning Lights |
Hi alan
I drilled into the side of the plastic expansion bottle that Rotax supplied, I
put her midway so the level would need to drop to minimum before the sensor triggered,
I will try and turn up the type of float sensor I used from my records and let
you no,
It's a simple wiring job once you are through the firewall,
Regards
Ivor
Sent from my iPad
> On 26 May 2014, at 08:51, "Alan Carter" <alancarteresq@onetel.net> wrote:
>
>
> Hello Ivor.
> Looks like Lydd is going to become more active know Manston is closed.
> I would like to fit an indicator the same as you have done, sounds a good idea,
is there something you can drill and attach to the filler cap.
> Can you give some info on this.
> Regards.
> Alan
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=423797#423797
>
>
>
>
>
>
>
>
>
>
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| Subject: | Re: Rotax 914 Turbo Warning Lights |
Alan, For my money it doesn't really matter what level the
fluid is in the bottle as long as the level in the header
tank is OK, and I assume you check that frequently as part
of your preparation for flight. The bottle is just there
to make any fluid pushed out by thermal expansion
recoverable as I see it. Why add weight and complication?
regards, David Joyce, G-XSDJ
On Mon, 26 May 2014 09:35:12 +0100
Ivor Phillips <ivor.phillips@ntlworld.com> wrote:
><ivor.phillips@ntlworld.com>
>
> Hi alan
> I drilled into the side of the plastic expansion bottle
>that Rotax supplied, I put her midway so the level would
>need to drop to minimum before the sensor triggered,
> I will try and turn up the type of float sensor I used
>from my records and let you no,
> It's a simple wiring job once you are through the
>firewall,
> Regards
> Ivor
> Sent from my iPad
>
>> On 26 May 2014, at 08:51, "Alan Carter"
>><alancarteresq@onetel.net> wrote:
>>
>><alancarteresq@onetel.net>
>>
>> Hello Ivor.
>> Looks like Lydd is going to become more active know
>>Manston is closed.
>> I would like to fit an indicator the same as you have
>>done, sounds a good idea, is there something you can
>>drill and attach to the filler cap.
>> Can you give some info on this.
>> Regards.
>> Alan
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=423797#423797
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>Un/Subscription,
>http://www.matronics.com/Navigator?RotaxEngines-List
>Forums!
>Admin.
>
>
>
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| Subject: | Re: Uneven Mag Drop 912 ULS |
I doubt seriously your uneven mag drop is caused by your carbs. It most
likely is an ignition problem. I have dealt with similar problems with my old
(mid 90's) 912 UL.
During my last event I "bit the bullet" and bought new ignition wires and
caps when I was having bad mag drops. This cured the problem. Now in my case
the wires/caps were old and probably needed replacement anyway so I didn't
feel too bad about it. I was able to save on the wire /plugs thru online
vendors.
I think if you clip the wires or search out a bad plug (bomb check
them),you will find your problem.
My opinion
Dick Maddux
Fox 4
912UL
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| Subject: | Re: Uneven Mag Drop 912 ULS |
All wires should have been trimmed. All plug gaps re-checked. I would do both of
these first.
Black sooty plugs under 3500 rpm can be very normal and can move to different plugs
at times and is different for every engine.
--------
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=423804#423804
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| Subject: | Re: Uneven Mag Drop 912 ULS |
Dick,
I agree with you. The carbs are not likely to be my mag drop problem. Prior
to a lot of work during the annual condx inspection things were fine. Some
thing I probably did is causing my problem, and I am at a loss for what it
might be, so I am going back over everything I did to try to eliminate any
remote possibility. Thanks for your input.
John
----- Origin.al Message -----
From: Catz631@aol.com
To: rotaxengines-list@matronics.com
Sent: Monday, May 26, 2014 6:40 AM
Subject: Re: RotaxEngines-List: Uneven Mag Drop 912 ULS
I doubt seriously your uneven mag drop is caused by your carbs. It most l
ikely is an ignition problem. I have dealt with similar problems with my ol
d (mid 90's) 912 UL.
During my last event I "bit the bullet" and bought new ignition wires and
caps when I was having bad mag drops. This cured the problem. Now in my ca
se the wires/caps were old and probably needed replacement anyway so I didn
't feel too bad about it. I was able to save on the wire /plugs thru online
vendors.
I think if you clip the wires or search out a bad plug (bomb check them)
,you will find your problem.
My opinion
Dick Maddux
Fox 4
912UL
---
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| Subject: | Re: Uneven Mag Drop 912 ULS |
Thanks, Roger...have trimmed the A side, and doing the B side this morning and
going over the carb balance even tho I doubt it is involved, but the mag drop
was OK prior to a lot of work during the annual condx inspection, so I have to
think it was something I did.
I still may have to fly to Tuscon and drop it into your hands !!!
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=423806#423806
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| Subject: | Re: Uneven Mag Drop 912 ULS |
Please remove me for this list!!!
Sent from my iPhone
> On May 26, 2014, at 8:21 AM, "JohnF" <n29cx@ridgeviewtel.us> wrote:
>
> Dick,
>
> I agree with you. The carbs are not likely to be my mag drop problem. Prio
r to a lot of work during the annual condx inspection things were fine. Some
thing I probably did is causing my problem, and I am at a loss for what it m
ight be, so I am going back over everything I did to try to eliminate any re
mote possibility. Thanks for your input.
>
> John
> ----- Origin.al Message -----
> From: Catz631@aol.com
> To: rotaxengines-list@matronics.com
> Sent: Monday, May 26, 2014 6:40 AM
> Subject: Re: RotaxEngines-List: Uneven Mag Drop 912 ULS
>
> I doubt seriously your uneven mag drop is caused by your carbs. It most li
kely is an ignition problem. I have dealt with similar problems with my old (
mid 90's) 912 UL.
> During my last event I "bit the bullet" and bought new ignition wires and c
aps when I was having bad mag drops. This cured the problem. Now in my case t
he wires/caps were old and probably needed replacement anyway so I didn't fe
el too bad about it. I was able to save on the wire /plugs thru online vendo
rs.
> I think if you clip the wires or search out a bad plug (bomb check them),
you will find your problem.
> My opinion
> Dick Maddux
> Fox 4
> 912UL
>
>
> ist">http://www.matronics.com/Navigator?RotaxEngines-List
> ics.com
> .matronics.com/contribution
>
>
>
>
> This email is free from viruses and malware because avast! Antivirus prote
ction is active.
>
>
>
>
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
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| Subject: | Re: Uneven Mag Drop 912 ULS |
Kelly, Go here.
http://www.matronics.com/subscription/
> On May 26, 2014, at 8:23 AM, Richard Kelley <thekelleygroup@msn.com> wrote
:
>
> Please remove me for this list!!!
>
> Sent from my iPhone
>
>> On May 26, 2014, at 8:21 AM, "JohnF" <n29cx@ridgeviewtel.us> wrote:
>>
>> Dick,
>>
>> I agree with you. The carbs are not likely to be my mag drop problem. Pri
or to a lot of work during the annual condx inspection things were fine. Som
ething I probably did is causing my problem, and I am at a loss for what it m
ight be, so I am going back over everything I did to try to eliminate any re
mote possibility. Thanks for your input.
>>
>> John
>> ----- Origin.al Message -----
>> From: Catz631@aol.com
>> To: rotaxengines-list@matronics.com
>> Sent: Monday, May 26, 2014 6:40 AM
>> Subject: Re: RotaxEngines-List: Uneven Mag Drop 912 ULS
>>
>> I doubt seriously your uneven mag drop is caused by your carbs. It most l
ikely is an ignition problem. I have dealt with similar problems with my old
(mid 90's) 912 UL.
>> During my last event I "bit the bullet" and bought new ignition wires and
caps when I was having bad mag drops. This cured the problem. Now in my cas
e the wires/caps were old and probably needed replacement anyway so I didn't
feel too bad about it. I was able to save on the wire /plugs thru online ve
ndors.
>> I think if you clip the wires or search out a bad plug (bomb check them)
,you will find your problem.
>> My opinion
>> Dick Maddux
>> Fox 4
>> 912UL
>>
>>
>> ist">http://www.matronics.com/Navigator?RotaxEngines-List
>> ics.com
>> .matronics.com/contribution
>>
>>
>>
>>
>> This email is free from viruses and malware because avast! Antivirus prot
ection is active.
>>
>
>
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
Message 10
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| Subject: | Re: RotaxEngines-List Digest: 3 Msgs - 05/24/14 |
John, All the info regarding lengths of tubing and the part no. are in the
IPC. You can use the part no. to get the ID of the tubing. Pegasus Racing
has metric silicon radiator hose. Pricey, but less than Rotax, and lasts
longer.
Rick Girard
do not archive
On Sun, May 25, 2014 at 2:46 PM, John Goodings <goodings@yorku.ca> wrote:
>
> Subject: Re: Blue coolant tubing for Rotax 912S
> From: John Goodings <goodings@yorku.ca>
>
> We need to replace the large thin-walled blue coolant tubing on our Rotax
> 912S. I should be grateful if someone can tell me (a) the diameter; (b)
> the length we need, (c) possible suppliers, and (d) a Canadian supplier if
> that is possible. Our CH601HD is in Ottawa (Carp), and I have to order the
> tubing from Toronto. All I can recall is that this tubing has a rather
> special diameter, and is rather hard to find. Thanks for your help.
>
> John Goodings, C-FGPJ, CH601HD with R912S, Toronto/Ottawa/Carp
>
>
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
Message 11
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| Subject: | Re: Uneven Mag Drop 912 ULS |
John,
Easy ways just don't work! Well, they do, but only for those people that
won the lottery.
In simple terms, even if you had a exhaust leak, it very we'll Would Not
give you
a
Mag drop. Nor would
an
out of tune Carb. Nor would the point of running With or Without the
cowling on. That logic would follow checking the air pressure in your
tires for the Mag drop!
IF the Mag drop was good on one Mag, you are STILL using the SAME Carb for
the Good Mag as for the Bad Mag
, no reason why it would change for the second Mag
... Do ya see the logic there?
Next is the Exhaust System. If there was an Exhaust leak, it
would depend where the leak was... An exhaust valve leak would leak on
either Mag so No difference in Mag check
with this scenario. If it was a pipe or muffler leaking it would again
be the same leak no matter which Mag you were on,
so No difference in Mag check
with this scenario either.
This is the way you go about checking out a Mag Drop Problem:
1 - Clean the plugs.
2 - TRIPLE check the Timing.
3 - Check the condition AND resistance of the spark plug wires.
4 - Did you ever DROP a spark plug? If so - Replace it, don't think about
it, do it. OR, test it on a Pressure-Voltage Spark Plug checking station.
Those are your ONLY options when it come to plugs.
5 - This is a bit more difficult - Check the Voltage coming out of your
Mag. You will need a High Voltage Probe Volt Meter, not many people have
them.
6 - Question: Do you get a Mag drop at BOTH low RPM and high RPM? If so,
then go back to #1 and run through the steps... 1 thru 5. If it only
happens at High RPM then there could be a voltage breakdown of a component
and an overhaul is needed. Problem being - You have a Rotax and both Low
and High are both High when you consider the small delta between the two
ranges. SO... What Next? SWAP out the Mag with one of known GOOD working
condition.
These are your options. Go through the steps and I'm positive you will
find the problem.
Barry
On Sunday, May 25, 2014, JohnF <n29cx@ridgeviewtel.us> wrote:
>
> My hope of finding a easy fix to my mag drop problem faded when no exhaust
> leaks were found.. bad mag drop with or without cowling on/off.
>
> Next effort will be to recheck carb balance in case that somehow got
> screwed up. ('tho I don't really expect this is the problem, but everything
> I can think of needs to be done !)
>
> Problem was on A side ignition, then switched to B side, and is staying on
> the B side being the problem. Problem exists if mag run up is done at 3500
> or 4000, and same results if reading an MGL tach I have installed instead
> of the Dynon D-180's tach.)
>
> Failing in this, I guess the only thing left to try is to replace plugs
> and trim plug wires a bit on the remaining 4 plugs on which I have not done
> this.
>
> /John
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=423779#423779
>
>
Message 12
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| Subject: | Re: Uneven Mag Drop 912 ULS |
John
I had a similar problem, it was a bad connection in the bundle of wires
that sits on top of the engine
Will
William Daniell
LONGPORT
+57 310 295 0744
On Mon, May 26, 2014 at 8:11 AM, JohnF <n29cx@ridgeviewtel.us> wrote:
> Dick,
>
> I agree with you. The carbs are not likely to be my mag drop problem.
> Prior to a lot of work during the annual condx inspection things were fine.
> Something I probably did is causing my problem, and I am at a loss for what
> it might be, so I am going back over everything I did to try to eliminate
> any remote possibility. Thanks for your input.
>
> John
>
> ----- Origin.al Message -----
> *From:* Catz631@aol.com
> *To:* rotaxengines-list@matronics.com
> *Sent:* Monday, May 26, 2014 6:40 AM
> *Subject:* Re: RotaxEngines-List: Uneven Mag Drop 912 ULS
>
> I doubt seriously your uneven mag drop is caused by your carbs. It most
> likely is an ignition problem. I have dealt with similar problems with my
> old (mid 90's) 912 UL.
> During my last event I "bit the bullet" and bought new ignition wires and
> caps when I was having bad mag drops. This cured the problem. Now in my
> case the wires/caps were old and probably needed replacement anyway so I
> didn't feel too bad about it. I was able to save on the wire /plugs thru
> online vendors.
> I think if you clip the wires or search out a bad plug (bomb check
> them),you will find your problem.
> My opinion
> Dick Maddux
> Fox 4
> 912UL
>
> *
>
> ist">http://www.matronics.com/Navigator?RotaxEngines-List <http://www.matronics.com/Navigator?RotaxEngines-List>
> ics.com <http://ics.com>
> .matronics.com/contribution <http://matronics.com/contribution>
>
> *
>
>
> ------------------------------
> <http://www.avast.com/>
>
> This email is free from viruses and malware because avast! Antivirus<http://www.avast.com/>protection is active.
>
> *
>
>
> *
>
>
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| Subject: | Re: Uneven Mag Drop 912 ULS |
Progress on the mag drop !
Taking suggestions from you folks, I trimmed back the plug wires on the ignition
side that I had not yet done.
As expected, mag balance was perfect.
As to exhaust leak...prior experience has shown me that a serious leak, one pipe
1/2 way out of the 'socket' on the muffler...definitely and repeatedly showed
that mag drop was OK with the top cowling off, but bad with it one. An A&P and
an experienced builder working with me saw this at least three times before
I figured out what the problem was. Fixing the exhaust pipe into the muffler
fixed everything.
As to today....the mag drop, average of 10 'runs' is now only 14 rpm difference
between A and B sides. I still am not happy with the drop, its 227 rpm drop on
A side, and 241 rpm drop on B side. I have buttoned up the cowling and will
fly tomorrow, weather permitting, and run the plane hard for about 30 minutes
and see if that changes anything.
My guess now is that the wire into the boot on cyl #4, bottom, was too far back
in; trimming it as Roger and others suggested fixed the large difference in
mag drops.
My appreciation for all the help.
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=423817#423817
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| Subject: | Re: Uneven Mag Drop 912 ULS |
John,
Easy ways just don't work! Well, they do, but only for those people that
won the lottery.
In simple terms, even if you had a exhaust leak, it very we'll Would Not
give you
a
Mag drop. Nor would
an
out of tune Carb. Nor would the point of running With or Without the
cowling on. That logic would follow checking the air pressure in your
tires for the Mag drop!
IF the Mag drop was good on one Mag, you are STILL using the SAME Carb for
the Good Mag as for the Bad Mag
, no reason why it would change for the second Mag
... Do ya see the logic there?
Next is the Exhaust System. If there was an Exhaust leak, it
would depend where the leak was... An exhaust valve leak would leak on
either Mag so No difference in Mag check
with this scenario. If it was a pipe or muffler leaking it would again be
the same leak no matter which Mag you were on,
so No difference in Mag check
with this scenario either.
This is the way you go about checking out a Mag Drop Problem:
1 - Clean the plugs.
2 - TRIPLE check the Timing.
3 - Check the condition AND resistance of the spark plug wires.
4 - Did you ever DROP a spark plug? If so - Replace it, don't think about
it, do it. OR, test it on a Pressure-Voltage Spark Plug checking station.
Those are your ONLY options when it come to plugs.
5 - This is a bit more difficult - Check the Voltage coming out of your
Mag. You will need a High Voltage Probe Volt Meter, not many people have
them.
6 - Question: Do you get a Mag drop at BOTH low RPM and high RPM? If so,
then go back to #1 and run through the steps... 1 thru 5. If it only
happens at High RPM then there could be a voltage breakdown of a component
and an overhaul is needed. Problem being - You have a Rotax and both Low
and High are both High when you consider the small delta between the two
ranges. SO... What Next? SWAP out the Mag with one of known GOOD working
condition.
These are your options. Go through the steps and I'm positive you will
find the problem.
Barry
On Mon, May 26, 2014 at 2:07 PM, JohnF <n29cx@ridgeviewtel.us> wrote:
>
> Progress on the mag drop !
>
> Taking suggestions from you folks, I trimmed back the plug wires on the
> ignition side that I had not yet done.
>
> As expected, mag balance was perfect.
>
> As to exhaust leak...prior experience has shown me that a serious leak,
> one pipe 1/2 way out of the 'socket' on the muffler...definitely and
> repeatedly showed that mag drop was OK with the top cowling off, but bad
> with it one. An A&P and an experienced builder working with me saw this at
> least three times before I figured out what the problem was. Fixing the
> exhaust pipe into the muffler fixed everything.
>
> As to today....the mag drop, average of 10 'runs' is now only 14 rpm
> difference between A and B sides. I still am not happy with the drop, its
> 227 rpm drop on A side, and 241 rpm drop on B side. I have buttoned up the
> cowling and will fly tomorrow, weather permitting, and run the plane hard
> for about 30 minutes and see if that changes anything.
>
> My guess now is that the wire into the boot on cyl #4, bottom, was too far
> back in; trimming it as Roger and others suggested fixed the large
> difference in mag drops.
>
> My appreciation for all the help.
>
> John
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=423817#423817
>
>
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