Subject: [FlyRotary] Series vs parralel rads


 
 
Ed,
 
            You can put me down for series rads and Jim M as well.  Neither one of us could get the coolant to flow equally through parallel rads.  Jim went so far as to add ball valves on the hot core to try and limit it’s flow.  It worked to a degree but plumbing got very heavy and complicated.
   SNIP

Series rads would give a similar % drop divided by 2 for each.  215 – 8% = 199.  Then the second rad sees 199 – 8% = 184  (I rounded off the numbers cuz 1 degree isn’t an issue)  By my calculation (which may be out in left field) the difference is negligible. 
 
Neil  (Giving Rusty something else to think about)

Thanks, Neil,

    Yes, I recall the effort Jim (and you) made trying to get parallel cores to flow evenly.  My personal opinion is that if using evaporator cores with an NA 13B then
plumbing them in series saves weight and complexity.  If on the otherhand, you are need all the cooling you can get (turbocharged perhaps), then parallel cores may be required.  Both clearly work if  designed and set up properly.  Now if I could only produce so much power that I would be forced to go to parallel {:>)

Ed Anderson