Ive been testing the D4 pump (Laing/DangerDen) @ 16V in my 2Loop setup and Ive noticed one thing... IT GETS HOT!
quote from Cathar over on OCUA:
"The middle rear of the motor gets pretty warm to hot when run at 16V continuously, possibly reaching upwards of 25-30C above ambient without any active cooling (say a fan) running over the pump."
after getting my 3/4" D4, i decided to do a little testing B4 installing it into the 2Loop.
the back of the pump housing "looked" (to me) like it should come off. after a few trys, it did. (it snaps in/out nothing broke)
i was happy to find an opportunity to improve what i found
so i whipped up a SIMPLE test (nothing scientific!) to see if this was true.
i ran the loop for 2 hours with the stock pump ( 12V !!). the water got to 86.0F with room temp of 66.6F. (the temp stayed @ 86.0F for 15min)
then i took the back off and removed the board from the housing (just let it hang to the side).
let it run for an hour and the temps were: 82.8F water and 67.1F room.
so by taking the "heat source" out of the housing, it went from 19.4F > room to 15.7F > room. so a 3.7F drop!
needless to say, Ive been modding the pump housing so as to have a fan cool the INSIDE of the pump... a little ghetto right now, but i think i came up with a functional way
its 40 min into the test...going to let it run all night...update soon...MUST sleep!...
UPDATE:
the fan is blowing OUT...
after 8 hours: 77.4F water, 63.9 room 13.5F > room. (5.9F lower than stock)