Today's Message Index:
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1. 01:34 AM - Re- Gas Spring (p-a.austin)
2. 11:23 AM - Coolant airlock? (Frans Veldman)
3. 01:10 PM - Spraying questions (graeme bird)
4. 01:13 PM - Re: 912 new oil pressure sender and gauge wiring (graeme bird)
5. 04:16 PM - Warp Drive blades (GRAHAM SINGLETON)
Message 1
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Paul,
Why replace your gas struts?
Just get them recharged, unscrew the connection at the back of the cylinder
and there is a valve in there, must be someone local who will recharge them,
try an automotive place, be cheaper, have had my done once so far, works
fine.
Peter
ZK-ZEB
Message 2
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| Subject: | Coolant airlock? |
Hi everyone,
After a few months of not flying and installation of a oil-to-water heat
exchanger, I experience unexpected cooling problems.
It is easy to blame the newly installed heat exchanger, but the same
heat exchanger works flawless for other builders.
The problem I have looks like insufficient coolant flow. Before I toss
out a system that seems to work for some others very well, I would like
to know if anyone has experienced improper coolant flow due to emptying
and refilling the coolant system.
If there is an airlock, will it survive loading on a trailer,
transportation to the airfield, a 6 minute test flight (in which the
water reached red line) and some boiling afterwards?
What is the proper way to get rid of an airlock and/or filling of the
coolant system?
There seems to be some coolant flow (so it is not a total pump
malfunction) but it looks like it is insufficient. The coolant heats up
slowly but the temp keeps increasing and never tops off.
Does anyone know of individual differences of cooling pump capacity of
the Rotax family of engines?
Frans
Message 3
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| Subject: | Spraying questions |
I am preparing to spraying the top coats (underside of elevators, then wings first!)
and have a couple of simple questions I am using 2K acrylic Octoral PF131
high build primer and Dellfleet 350 top coat:
a) how to spray large areas like wings - whether better to work in squares or walk
down the wing each time? My paint says cross coats and I am using the slow
thinner.
b) do I need to let the primer dry ie 24 hours or is it better to spray sooner
and get a better bond. I would guess dry would be best and fine sand off any tiny
blemmishes.
Thanks
--------
Graeme Bird
G-UMPY
Mono Classic/XS FWFD 912ULS/Warp drive FP
Build nearing completion
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=338146#338146
Message 4
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| Subject: | Re: 912 new oil pressure sender and gauge wiring |
Thanks Richard, that is very helpful and has saved me some rewiring. Clearly the
sensor can be either a current sink or source.
--------
Graeme Bird
G-UMPY
Mono Classic/XS FWFD 912ULS/Warp drive FP
Build nearing completion
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=338147#338147
Message 5
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| Subject: | Warp Drive blades |
Has anyone got any damaged but visibly acceptable blades? G-YURO is on disp
lay =0Ain the Yorkshire Air Museum at Easingwold airfield but has a cardboa
rd replica =0Aof a prop installed which looks rather unconvincing at the mo
ment. It would be =0Anice if we could find some scrap blades that could be
fitted. I have a set of =0Aslightly bent castings which I will donate, all
we need now is three blades.=0AGraham
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