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Thanks Rusty,
Keep doing whatever it takes to get one of your planes flying. :) I'll
be looking at some fiberglass work myself when I figure out how I'm
going to cut up my cowling. I looked around on the link you supplied for the NPG+, and found that
comparing 10C to 80C viscosity numbers, water has a ratio of about 3,
50/50 EG/W is 5 and NPG+ is 16. Also the viscosity of NPG+ at 80C is
about 10X that of water at 80C.
Now the interesting thing is that the viscosity of water at 10C is
about the same as 50/50 EG/W at 80C, so I should be able to get a
comparison without heating. I can use 10C water to simulate 50/50 EG/W
at 80C.
It appears that you can drink as much of it as you like (if you're a
rat). Say is NPG+ green or is that just Prestone? Perfect drink for
St. Pat's. Quote from NPG+ site:
NPG+ Coolant has been determined to be non-toxic in mammalian testing.
Independent tests on laboratory rats exposed to Evans NPG+ Coolant
showed no ill effects. Bob W. On Mon, 14 Mar 2005 20:31:00 -0600
"Russell Duffy" <13brv3@bellsouth.net> wrote:
BTW Rusty, did you get your flow meter, and have you made any progress on
doing the hot water flow test? That's going to determine whether I stick
with the two WP136's or go with a single WP336.
Bob W.
Hi Bob,
Yes, I got the latest flow meter, and it looks great, but I've been so busy
with this &@%*# cowl that I haven't even had a chance to think about
checking the flow. I'm also still fiddling with the basic cooling system.
For some reason, I'm not feeling the love from this 0 psi cap that I got
from Evan's. It just doesn't seem to push out, and suck in water as it
should. Lot's of testing to do. Also, be aware that I'm running Evan's NPG-R coolant, so my flow numbers
will be different from normal water/glycol. Realistically, it's probably going to be a few weeks before I would get
around to doing this, but if you're desperate for the numbers, I'll try to
speed that up (any excuse to avoid fiberglass). Just let me know what you
need.
Rusty (covered in green foam for the next few days, in honor of St.
Patrick's Day)
--
http://www.bob-white.com
N93BD - Rotary Powered BD-4 (real soon)
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