REFLECTOR: Evan's coolant

[Al Gietzen]

Don't go there.  Any engineer who understands convective heat transfer will
tell you that unless the pump and coolant system are specifically designed
for it, you're asking for trouble.  And the rotary engine system was not.
The combinations of its lower specific heat (requiring more flow for the
same heat removal); and higher viscosity (causing increased pressure drop
for the same flow) are just the most obvious issues.
 
Al
 
 -----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of nmflyer1 at aol.com
Sent: Wednesday, June 06, 2012 9:07 PM
To: reflector at tvbf.org
Subject: Re: REFLECTOR: High speed ground cont.



Chris,  

You might want to check into this.: 
http://www.evanscooling.com/products/coolants/high-performance-coolant/ 

Kurt 


-----Original Message-----
From: Chris Barber <cbarber at texasattorney.net>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Cc: reflector <reflector at tvbf.org>
Sent: Wed, Jun 6, 2012 5:48 pm
Subject: Re: REFLECTOR: High speed ground cont.


Water and coolant. 

Sent from my iPhone 4

On Jun 6, 2012, at 6:46 PM, "nmflyer1 at aol.com" <nmflyer1 at aol.com> wrote:



Chris,  

Are you using water/coolant, or all NPG+  ?


Kurt 



-----Original Message-----
From: Chris Barber <cbarber at texasattorney.net>
To: REFLECTOR <reflector at tvbf.org>
Sent: Wed, Jun 6, 2012 3:48 pm
Subject: REFLECTOR: High speed ground cont.


Just did another nose lift at about 70 kts. OAT is indicating 107 degrees on
my 

engine monitor. Coolant temps were around 200 when I took active after a
long 

taxi and waiting for a Cherokee to taxi in. Oil was lower.  Coolant went to 

about 210 when powered up at the numbers but started to drop slightly as I
built  

speed. About 205 as I left active and 215 as I got to hangar.   



I don't think that is too bad considering the conditions, Really hot and
humid.



I was also happy the temps started down as I gathered speed even though the
run 

down the runway was only several seconds. I would hope the temps will
continue 

down to preferred levels as I continue to increase speed. Impossible to know


while on the ground.



I know, go fly and find out...  Uh, yeah, but with mid-day temps at 107 on
the 

ramp I think I prefer an early morning and less wind and likely much less
bumpy. 





Chris 

Houston

Velocity SE

13b turbo rotary



Sent from my iPhone 4

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