Today's Message Index:
----------------------
1. 04:14 AM - Re: Low voltage output from the Ducatic regulator (Brian Ellis)
2. 05:11 AM - Re: Low regulator output voltage (MacDonald Doug)
3. 06:50 AM - Re: Low regulator output voltage (Roger Lee)
4. 07:32 AM - Re: Low voltage output from the Ducatic regulator (Roger Lee)
5. 11:07 AM - E15 (Thom Riddle)
6. 12:11 PM - Re: Re: How to mount a tire the easy way. (bjones@dmv.com)
7. 12:35 PM - Re: Re: How to mount a tire the easy way. (Pete Christensen)
Message 1
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| Subject: | Re: Low voltage output from the Ducatic regulator |
hi=0A=0Aon our stratomaster the voltage readout is 13.8 - 14.2 (occasionall
y peak but =0Afalls back)=0A=0Ai have a crowbar curcuit-to monitor the ra
il voltage so when it reaches 16v it =0Adrops a relay that disconnects the
supply from the engine to the regulator and =0Athe on-board electrics then
run on the aircraft batt.--in other words high volt =0Aprotection.-
=0A=0A=0Aconsidering the amount of electrical stuff now on-board it really
needs =0Aprotecting as burnt out stuff is v expensive to repair.-=0A=0Ai
am trying to locate-male and female-plugs, that will allow me to interc
ept the =0Aregulator wiring at the existing plug and patch all wires across
, except the- =0Aengine power supply (the 2 yellows) to the regulator, wh
ich i can-then wire-via =0Athe relay break contacts.=0A=0Aare-there a
ny such plugs about?=0A=0Ais there a similar circuit on offer anywhere that
can be patched in, save me =0Asome work.=0A=0Acheers=0A=0ABrian =0A=0AG-CG
EZ=0A=0A=0A=0A=0A________________________________=0AFrom: Roger Lee <ssadiv
er1@yahoo.com>=0ATo: rotaxengines-list@matronics.com=0ASent: Sat, February
19, 2011 2:02:12 AM=0ASubject: RotaxEngines-List: Low voltage output from t
ee" <ssadiver1@yahoo.com>=0A=0AHow many of you only have about 13.1V - 13.3
V charge output to the battery? (I =0Ahave a fix if enough people have an i
ssue)=0A=0AHow many have at least 13.8V+?=0A=0A--------=0ARoger Lee=0ATucso
n, Az.=0ALight Sport Repairman - Maintenance Rated=0ARotax Repair Center=0A
Home 520-574-1080- TRY HOME FIRST=0ACell 520-349-7056=0A=0A=0A=0A=0ARead
this topic online here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=
- - - - - - - - - - - - -Matt Dralle, List Admin.
======0A=0A=0A
Message 2
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| Subject: | Re: Low regulator output voltage |
The good news is Roger that the common failure mode for diodes is a short rather
than an open. If the diode were to fail, it would most likely act as though
the original wire was back in place.
Doug MacDonald
CH-701 C-GBQX
NW Ontario, Canada
> Time: 06:00:24 PM PST US
> Subject: RotaxEngines-List: Low regulator output voltage
> From: "Roger Lee" <ssadiver1@yahoo.com>
> What is the down side? If the diode were to fail some day
> then your voltage would
> climb to 15 volts and be in an over charge state at the
> battery.
> Roger Lee
> Tucson, Az.
> Light Sport Repairman - Maintenance Rated
> Rotax Repair Center
> Home 520-574-1080 TRY HOME FIRST
> Cell 520-349-7056
Message 3
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| Subject: | Re: Low regulator output voltage |
Hi Doug,
I did not know that.
Thanks
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331510#331510
Message 4
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| Subject: | Re: Low voltage output from the Ducatic regulator |
Hi All,
One of our electrical engineer members came up with this and if he wants to step
forward for the credit he can.
Have you a low voltage output around 13.1V - 13.3V from the Rotax Ducati regulator?
Many have for years. Our battery never gets to a full charge as it needs 13.9V
- 14.2V. My voltage on my system is only 13.1V - 13.2V normally. When I turn on
my landing light my voltage drops to 11.8V on my Dynon at low rpms whether at
idle or coming in for landing, plus the light is not near as bright. There is
a fix, but you technically need an LOA if you have an SLSA from the aircraft
Mfg. Here is a picture below. You use a 1 amp 200V diode which is available at
any electronics store. The number for the diode is 1N4001 thru 1N4007. If you
only need only a .4V increase then a 1N5817 diode 1 amp 20V. The band on one
end will face up. It goes between the Regulator Rectifier "R" terminal slot and
the "Charge" terminal slot. There is a small white wire already between these
two terminals and this is what you are replacing and then that small wire needs
to be clipped in half. This will raise your output charging voltage .8 volts
or .4V depending on the diode used. When I tried this mod it went from 13.2V
to 14.1V. When I turn on my running lights and all other electrical (other
than the landing light) the voltage drops .1V - .2V. When I turn on the landing
light it drops to 13.2V, but at least it doesn't drop to 11.7V any more. We
all know most battery's require 13.9VV - 14.2V to charge fully and that's one
reason for the right type of charger in the hanger. When you have a battery that
only gets charged 60% - 70% (13.2V) things don't work as well. Lately my electric
flaps were running slow and once in a while blinked for a few seconds.
Now they are quick and crisp again. My plane starts up much faster and easier
with a fully charged battery. You have 2 options for a connection. Solder the
diode in place or use something like a Molex connector crimped on each end of
the diode. Use a wire tie to secure this diode or jumper wire in place to help
protect against any vibration.
What is the down side? If the diode were to fail some day then your voltage would
climb to 15 volts and be in an over charge state at the battery. The quick
and easy fix is to manage voltage until you land by pulling the generator breaker
and let the battery discharge for a while then turn it back on for a while
until you land. If it were me I would use the crimp method on the diode and make
up a 2.5" plain wire jumper with Molex connector on each end. In an emergency,
all you would have to do is unplug the diode and plug the jumper wire in
place then you are right back to a stock set up. Keep the little jumper in your
tool kit. I'll try to take a picture of the jumper wire and post it here this
weekend.
p.s.
Since electrical engineering is not my expertise by any stretch of the imagination
I was just informed that if the diode were to fail the system would go back
to stock on its own through the diode wire.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331515#331515
Attachments:
http://forums.matronics.com//files/ducati_2_775.jpg
Message 5
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To USA Rotax operators:
No current worries concerning our auto-gas increasing to 15% ethanol.
http://www.detnews.com/article/20110219/AUTO01/102190386/1148/House-votes-to-block-E15-from-gas-pumps
--------
Thom Riddle
Buffalo, NY (9G0)
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x32
Don't accept your dog's admiration as conclusive evidence that you are wonderful.
Ann Landers
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331548#331548
Message 6
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| Subject: | Re: How to mount a tire the easy way. |
I gave up trying to demount two really old tires on roughly 1991 vintage
Kitfox (Douglas) wheels and resorted to cutting a section of the tire down
to the wheel rim then cutting thru the metal wires in the bead of the tire
with a carbide bur in a dremel tool.
The wires in the bead made a serious "pop" as I cut thru the last one.
Being a retired dentist this seemed prettly easy to do without damaging
the aluminum wheel but it ruined the carbide bur.
BJ
Kitfox IV N143K
PA 39 N626NR
> <riddletr@gmail.com>
>
> That is clever.
>
> I have had tires so difficult to remove from the rim half that my 280 lb
> mechanic partner standing on the tire could not break the bead. So we
> built a tool using pieces of 5/8" plywood with a circular hole just larger
> than the wheel rim diameter plus a piece of all-thread, plus clamp bars
> and nuts to squeeze the tire off the rim. Works well but this seems a bit
> simpler.
>
> --------
> Thom Riddle
> Buffalo, NY (9G0)
> Kolb Slingshot SS-021
> Jabiru 2200A #1574
> Tennessee Prop 64x32
>
>
> Don't accept your dog's admiration as conclusive evidence that you are
> wonderful.
> Ann Landers
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=331397#331397
>
>
Message 7
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| Subject: | Re: How to mount a tire the easy way. |
Here's how I dismounted some difficult tires. I removed the wheel and
tire from the plane. Then I took them to a tire shop. That was so easy.
(I just can't help being a smart ass.)
Pete
Leander Tx
Kitfox III, 912,
On 2/19/2011 2:01 PM, bjones@dmv.com wrote:
> --> RotaxEngines-List message posted by: bjones@dmv.com
>
> I gave up trying to demount two really old tires on roughly 1991 vintage
> Kitfox (Douglas) wheels and resorted to cutting a section of the tire down
> to the wheel rim then cutting thru the metal wires in the bead of the tire
> with a carbide bur in a dremel tool.
>
> The wires in the bead made a serious "pop" as I cut thru the last one.
> Being a retired dentist this seemed prettly easy to do without damaging
> the aluminum wheel but it ruined the carbide bur.
>
> BJ
> Kitfox IV N143K
> PA 39 N626NR
>
>> --> RotaxEngines-List message posted by: "Thom Riddle"
>> <riddletr@gmail.com>
>>
>> That is clever.
>>
>> I have had tires so difficult to remove from the rim half that my 280 lb
>> mechanic partner standing on the tire could not break the bead. So we
>> built a tool using pieces of 5/8" plywood with a circular hole just larger
>> than the wheel rim diameter plus a piece of all-thread, plus clamp bars
>> and nuts to squeeze the tire off the rim. Works well but this seems a bit
>> simpler.
>>
>> --------
>> Thom Riddle
>> Buffalo, NY (9G0)
>> Kolb Slingshot SS-021
>> Jabiru 2200A #1574
>> Tennessee Prop 64x32
>>
>>
>> Don't accept your dog's admiration as conclusive evidence that you are
>> wonderful.
>> Ann Landers
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=331397#331397
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
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