Today's Message Index:
----------------------
1. 01:38 AM - Overvoltage problem with regulator (Keith Hickling)
2. 03:05 AM - Bing carb corrosion (Remi Guerner)
3. 05:58 AM - Re: Overvoltage problem with regulator (jpg12305)
4. 07:44 PM - Re: Charging Problem Solved(914)maybe (Kevin Klinefelter)
5. 07:51 PM - Re: Firesleeve on a 914 Engine (Kevin Klinefelter)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Overvoltage problem with regulator |
Hello all,
After all the discussion about lack of charging, I have just developed
an
overvoltage problem after 100 hrs. The regulator has functioned fine
until
tle last couple of flights, when I noticed that the voltmeter was
flicking
up and down once or twice a second around a mean of about 13 volts. Then
today just before shutting the engine down, I noticed it was reading 16
- 17
volts on idle, and when I increased to 300 rpm it went up to 18 volts,
with
the battery ammeter showing a small charge (half amp). So I suut the
engine
down and looked under the cowl, and superficially all looked well with
the
regulator and wiring. I didn't have a voltmeter with me, but will check
the
connections tomorrow.
The regulator is wired as on the Europa diagramme, with the R, B+ and C
leads all connected together and to the + terminal of the capacitor, and
through the 30 amp fuse to the main bus via an alternator output switch.
I'd be very grateful for any suggestions / comments from the pundits -
does
this have to be a regulator problem, or can any wiring or connection
issues
cause this problem? I'll check that I have battery voltage at the C
terminal
tomorrow, but the connections looked fine.
Many thanks in anticipation,
Keith Hickling,
New Zealand.
Kit 613, 912 uls.
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Bing carb corrosion |
Hi all,
This is to share my personal experience on Bing carb corrosion.
During my annual inspection in April last year, I found some corrosion
at the bottom of both carburettor bowls. At this time, the 912ULS engine
was 4 year old and had 360 hours total, using mainly Mogas. This
corrosion had produced some black particles (supposedly zinc oxide, as
the bowls seem to be made of cast zinc-aluminum alloy) which could
partially block the nozzles and prevent the carbs to work properly. I
talked to the french Rotax distributor who said that they had never
experienced such corrosion. After a thorough cleaning I reinstalled the
bowls.
This year I decided to buy new bowls for replacement during the annual.
Surprisingly, I found that the new bowls were now nickel-plated,
certainly for a reason: preventing corrosion!
During the annual, I found some additional corrosion inside the bowls.
As I had to also replace the 5 year old diaphragms, I inspected the
piston and needle and did not find any corrosion on these components.
Conclusion: remove, clean and inspect carb bowls at least every year as
recommended by both Europa Aircraft and Rotax.
Regards
Remi Guerner
F-PGKL
XS monowheel S/N395, 740 hours
<<<<<<<<The current FAA Nuts and Bolts Newsletter has an interesting
article about
corrosion in a Bing carb on a Jabiru 3300 experimental aircraft
(possibly a
Sonex) leading to an accident.
https://www.faasafety.gov/files/notices/2010/Apr/10-01%5B1%5D.pdf
(see p. 5). There are some good thoughts Re conditional inspections on
Bing
carbs. >>>>>>>>>
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Overvoltage problem with regulator |
I had such erratic fluctuations once in the past after an annual inspection.
I took me a while... to simply discover that my ground connection to the battery
was loose. The battery was not playing its buffer role.
I understand you can see some current going to the battery, but there could be
some connection to clean or tighten.
Just my own experience.
Good luck,
Jean-Paul
Europa 332 - France
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=296461#296461
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Charging Problem Solved(914)maybe |
Hi All,
To add to Steven's experience and data points but toward our fleet's 914
installalations...
My regulator has been mounted on the passenger footwell front inside the
plenum providing fresh air via NACA to the air intake. So far so good, only
175 hours to date...
Any other 914 data out there?
P.S. Steven and Ian and Irene. It was very good to meet you all. I just flew
over the Sierra from Sacramento to Bishop Ca (over Yosemite) showing a
groundspeed of 175 knots level at 17,500'. Ok, there was a smokin' tailwind.
And yes, I am having one heck of a lot of fun.
Kevin
914 Mono-wheel
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Firesleeve on a 914 Engine |
Gidday Tony,
I have a similar installation on a monowheel and 6' worked for me.
Kevin
----- Original Message -----
From: "Tony Renshaw" <tonyrenshaw268@gmail.com>
Sent: Saturday, May 01, 2010 7:31 PM
Subject: Europa-List: Firesleeve on a 914 Engine
>
> Gidday,
> I am off to the LA in a day or two and am putting together a Spruce order.
> I'd like to know the amount of Firesleeve product I should get for my fuel
> lines from Firewall to Fuel Regulator, a run from Fuel Regulator to top of
> footwell where I will have a Differential Fuel Pressure Sensor fitted, and
> the run from Fuel Regulator to exit in firewall of fuel return line. Would
> 6' be enough, and is there anything else I should consider?
> Reg
> Tony Renshaw
> Sydney Aussie
>
>
>
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|