Today's Message Index:
----------------------
1. 12:01 AM - Re: 912ULS integrated alternator question (K Dilks)
2. 07:34 AM - Re: 912ULS integrated alternator question (pasj66)
3. 07:41 AM - Re: 912ULS integrated alternator question (pasj66)
4. 09:42 AM - Re: Re: 912ULS integrated alternator question (Craig Payne)
5. 10:37 AM - Re: 912ULS integrated alternator question (lucien)
6. 03:05 PM - Re: Re: 912ULS integrated alternator question (Pete Christensen)
7. 03:18 PM - Re: Re: 912ULS integrated alternator question (Pete Christensen)
8. 07:41 PM - Re: Re: 912ULS integrated alternator question (Noel)
9. 07:41 PM - Re: Re: 912ULS integrated alternator question (Noel)
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| Subject: | Re: 912ULS integrated alternator question |
Its ok to run the alternator with no load but to run the regulator with no load
is bad news for it.....but I think you have just found that out. It does not
blow immediately but after some time.
Kev : :)
--------
Austria .............
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| Subject: | Re: 912ULS integrated alternator question |
Hi all,
If the 22000 mF capacitor is broken the R/R can be burnt due to too much AC on
the 12 V. (fig 52 pos 25 in the installation manual)
Best regards
Patrik
--------
MCR R100, R914UL3 W/IC
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| Subject: | Re: 912ULS integrated alternator question |
Correction on capacitor size: 22 mF...
Regards
Patrik
--------
MCR R100, R914UL3 W/IC
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http://forums.matronics.com/viewtopic.php?p=242637#242637
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| Subject: | Re: 912ULS integrated alternator question |
The size stated in the installation manual is 22 thousand uF (microfarads)
(image attached). This is a fairly large electrolytic capacitor, probably
about an inch or so in diameter and 2 to 3 inches long.
"- a capacitor (Fig. 67 Pos. (25)) of at least 22 000 uF / 25 V is necessary
to protect the correct functioning of regulator and to flatten voltage. The
regulator is not designed to store any electrical charge. If for any reason
the battery or bus system is disconnected from the regulator while the
engine is running (i.e. the master switch is shut off) the capacitor will
safely absorb and dissipate the electrical charge produced by the generator.
Otherwise the regulator would be damaged."
-- Craig
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of pasj66
Sent: Monday, May 04, 2009 8:41 AM
Subject: RotaxEngines-List: Re: 912ULS integrated alternator question
Correction on capacitor size: 22 mF...
Regards
Patrik
--------
MCR R100, R914UL3 W/IC
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=242637#242637
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| Subject: | Re: 912ULS integrated alternator question |
K Dilks wrote:
> Its ok to run the alternator with no load but to run the regulator with no load
is bad news for it.....but I think you have just found that out. It does not
blow immediately but after some time.
>
> Kev : :)
Actually the R lead was still connected, looking over the plug again. I think the
thing just plain burnt out. Not too surprising tho, as I flew the plane early
one with a bad batt, had a shorted cell so was always drawing a charge, that
plus electrics. I figure it was just more than it could handle.
Stiil you'd think it would have its own protection mechanism against an open circuit
for 170 bucks - my case would have been at the plug so a capacitor to earth
wouldn't have helped me.......
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=242678#242678
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| Subject: | Re: 912ULS integrated alternator question |
Patrik,
I think you were right the first time. 22,000mF.
Pete
----- Original Message -----
From: "pasj66" <patrik@sjolund.com>
Sent: Monday, May 04, 2009 8:40 AM
Subject: RotaxEngines-List: Re: 912ULS integrated alternator question
>
> Correction on capacitor size: 22 mF...
>
> Regards
> Patrik
>
> --------
> MCR R100, R914UL3 W/IC
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=242637#242637
>
>
>
>
>
>
>
>
>
>
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| Subject: | Re: 912ULS integrated alternator question |
I put a capacitor the size of a beer can in mine. It's 57,000mF. But I had
it in my junk box.
Pete
Hell Paso
----- Original Message -----
From: "Craig Payne" <craig@craigandjean.com>
Sent: Monday, May 04, 2009 10:23 AM
Subject: RE: RotaxEngines-List: Re: 912ULS integrated alternator question
> The size stated in the installation manual is 22 thousand uF (microfarads)
> (image attached). This is a fairly large electrolytic capacitor, probably
> about an inch or so in diameter and 2 to 3 inches long.
>
> "- a capacitor (Fig. 67 Pos. (25)) of at least 22 000 uF / 25 V is
> necessary
> to protect the correct functioning of regulator and to flatten voltage.
> The
> regulator is not designed to store any electrical charge. If for any
> reason
> the battery or bus system is disconnected from the regulator while the
> engine is running (i.e. the master switch is shut off) the capacitor will
> safely absorb and dissipate the electrical charge produced by the
> generator.
> Otherwise the regulator would be damaged."
>
> -- Craig
>
> -----Original Message-----
> From: owner-rotaxengines-list-server@matronics.com
> [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of pasj66
> Sent: Monday, May 04, 2009 8:41 AM
> To: rotaxengines-list@matronics.com
> Subject: RotaxEngines-List: Re: 912ULS integrated alternator question
>
>
> Correction on capacitor size: 22 mF...
>
> Regards
> Patrik
>
> --------
> MCR R100, R914UL3 W/IC
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=242637#242637
>
>
>
Message 8
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| Subject: | Re: 912ULS integrated alternator question |
That should tell you something about solder and airplanes... If it isn't
inside a box/case don't use it!
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of lucien
Sent: 03 May 2009 11:59 AM
Subject: RotaxEngines-List: Re: 912ULS integrated alternator question
icrashrc wrote:
> I just saw a similar problem in a 912 powered Alegro. The charging system
seemed to have problems keeping the voltage up at anything less than cruise
power. Finally the charging system quit working. After the regulator was
replaced all was much better, even the low voltage at low rpm issue. I
wouldn't be surprised if your low voltage problems went away as well. The
Alegro has 2 glass panels, electric fuel pump, landing lights, strobes,
transponder, gps, etc, etc, etc. and can maintain reasonable voltage
levels... now.
In my case, it appeared some solder had dribbled into the spade connector on
one of the battery leads (the one going to B+ on the R/R) so it never
correctly connected to the R/R. I figure it finally just came off inside the
connector creating an open circuit and blowing the regulator.
BTW, is there a better quality R/R we can use instead of the Ducati one? For
170 bucks a pop, they shouldn't blow so easily and often.....
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=242490#242490
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Message 9
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| Subject: | Re: 912ULS integrated alternator question |
The Honda Gold Wing should have a dirt big and heavy duty R/R ...
connections should be the same.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Gilles
Thesee
Sent: 03 May 2009 02:47 PM
Subject: Re: RotaxEngines-List: Re: 912ULS integrated alternator question
<Gilles.Thesee@ac-grenoble.fr>
lucien a crit :
> BTW, is there a better quality R/R we can use instead of the Ducati one?
For 170 bucks a pop, they shouldn't blow so easily and often.....
>
Have you considered the Schicke GR6 ?
http://contrails.free.fr/elec_ducati_en.php
Best regards,
--
Gilles
http://contrails.free.fr
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