Mailing List flyrotary@lancaironline.net Message #745
From: Haywire <haywire@telus.net>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: RE: [FlyRotary] Re: Ordered my EWP
Date: Sat, 28 Dec 2002 08:12:23 -0500
To: <flyrotary>
Message
Hi Ed;
    My theory is that the smaller passages in the Ford cores will allow more surface to coolant contact, which is what we are looking for. The size of the Ford cores allow for a far better mounting arrangement, which positions the cores for optimum airflow. Due to the better position I was able to build very smooth flowing composite intake ducts, which should optimize airflow through the cores. Of course none of this matters if I can't get sufficient coolant flow through them.
    I have brought home from work an industrial magnetic tube flowmeter & a transmitter. I've done a few preliminary tests with the flow through the cores in series & I've now rewelded the cores in a parallel configuration, but have not had time to plumb them for a test (had to go to the in-laws for Christmas). This week I'm concentrating on finishing prepping for painting and really hope to paint next week. After that I will be away at tech school for 2 months. I hope to return home every other weekend, at which time I will complete my flow testing and submit a full report to the list. Preliminary results look promising. I don't want to post an incomplete report, to avoid any speculating & theorizing to which I don't have time to respond to right now, due to my schedule.
 

S. Todd Bartrim
Turbo 13B rotary powered
RV-9endurance (FWF)
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm

           "If you always do what you always did, you'll always get what you always got." 

 

    Second, Todd is apparently going to try the Ford evaporator cores as they fit is cowl spacing requirements better than the GM.  However, unless Ford has changed the construction of their cores, I fear he is going to find that due to the very small cross section of the Ford core tubes that they will not flow adequate coolant to keep a 130 hp or more powerful engine within the desired temp range. However, since I have not tried the Ford cores, it will be interesting to see whether that hypothesis turns out to be correct or not
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