They aren't for bringing air in but getting air out....they reduced the Motor temperature in the first Monster by about 75 degrees F according to the data logging
Trust me Rolf...for my application (Inrunner) they are a must.
Here is one of my inrunners...arrived today
... Mega 22/60/1E. Thanks Murdo! The Mega is 36mm by 90mm long...a BEAST
I also plan on getting a Neu of as close as possible size and kv to do some head to head tests. Should be fun! I'm sure the lowest resistance will win out
The 1515/1Y that was in my first Monster is an awesome motor...I was really glad when Steve and company fixed it (burried 8" in a field) and I got it back better than NEW no pun intended...GREAT JOB Steve! It remains to be seen how much I could put through that motor as it was still taking it and had room for more (over 270amps, 4kw, direct drive). I still had 40 degrees to go to reach max case temp!
This should be really fun...both of us building one on opposite sides of the pond