Gooserider:
My quick drawing, I must agree would most likely be a very large airtrap

:shrug:.
The purpose of this design was to try and drive home the point that it HAS TO HAVE a larger intake hose. So I drew it up using the shortest length hose and fewest bends possible.
This is probably alot closer to what would really work
Again I state : Enhiem made the 1250 with a larger inlet for a reason, DO NOT reduce it to 1/2 inch and think it will be ok.
Aardil