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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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