Today's Message Index:
----------------------
1. 02:42 AM - Re: Post cure oven ideas (JonathanMilbank)
2. 03:22 PM - Is there any reason to have a separate battery and alt switch? (William Daniell)
3. 07:03 PM - Re: Post cure oven ideas (rparigoris)
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: | Re: Post cure oven ideas |
It's about 25 years since I did post curing of the wings and tail planes. Mine
is a Classic with wings which needed about 1000 man hours of careful effort. I
built a crude insulated "box" and placed two electric fan heaters to blow hot
air in through small ducts low down at either end, being very careful not to
allow direct blasts onto the flying surfaces.
In the early instruction manual was a warning from Ivan Shaw not to allow anything
being cured to exceed 50C, lest the blue foam inside should swell and your
carefully created masterpiece would transform itself into the proportions of
a Snickers chocolate bar. Also, if the wing was supported on trestles and left
unattended in excessive heat, the resin would soften above 50C and the wing would
sag between the trestles.
So it is highly recommended either to have thermostatic control of curing temperature,
or to place a few thermometers against the pieces being post cured and
to monitor the curing process at 15 minute intervals throughout the long hours.
This I did by briefly opening the box each time and quickly reading the thermometers.
I then adjusted the fan heaters as required, which meant that I was
being the thermostat.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=496183#496183
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: | Is there any reason to have a separate battery and alt switch? |
I know this might put the cat among the pigeons...
I have self powered back ups
- dynon has its own battery
- Back iLevil with its own battery
- hand held radio
I have a crowbar and I believe that the rotax alt will generate a maximum
of 18 amps on a very good day. The only things that dont have their own
backup power is trim and prop.
So would having everything wired into a single ON OFF switch present any
drawback?
This arises out of reaching out to my GPS and a sudden bump causing me to
miss the GPS and turn off the bat (which I immediately turned back on). I
have separate bat and alt switches .(which is probably not in an case the
best arrangement I admit but leaving that argument aside for now).
Th obvious thing to do is what is recommended by Bob N in the Z16 which is
to have an OFF - ON (BAT) - ON (BAT+ALT) switch...but Im curious.
Will
William Daniell
LONGPORT
+1 786 878 0246
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: Post cure oven ideas |
Hi Tony
I sewed up plastic sausage for tailplanes and rudder. Using a 1,500 watt electric
heater that oscillates back and forth. I had to disassemble and mutilate the
thermostat to operate at temp required. Using a muffin fan to inflate and have
several thermometers to monitor temp. Draping packaging bubbles allows yo to
get temp just right.:
http://www.europaowners.org/main.php?g2_itemId=27216
Works great and packs into a very small package when not in use. BTW check out
inflatable painting in same folder. Ron P.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=496201#496201
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! --
|