Mar 27, 2013 · The lip allows the incomming air to flow around the edge of the fan without turbulating..with out the lip the air will trip over the edge and cause a turbulant wake which will make the fan think the intake is smaller diameter than it really is.

Jul 21, 2021 · I am doing a 70mm edf fan to 90mm edf fan conversion in a jet. But inorder to make it fit, I will need to grind off the lip of the edf fan unit. Is this an absolutely wrong thing to do, as in it would cripple the plan badly ?

Intake Lip for Wemotec 90mm EDF Midi Fan (classic & evo) or Ejets Jetfan 90 and other 90mm EDF units.

The E-Jets Jetfan 120mm intake ring for the Jetfan 120mm EDF Unit only. This inlet lip is designed specifically for our Impeller Jetfan-120 ECO and 120 Pro! You can use this new lip for “Open Duct Systems” in your models, but also on the test bench for testing.

Straight Intake ring for the E-Jets Jetfan 100mm EDF Unit only. This inlet lip is designed specifically for our Impeller Jetfan-90 in a closed air system to help fit the front of the edf unit to a former or bulkhead.

Fan Jets USA offers this intake ring to provide an efficient way to streamline the airflow into the fan unit. This inlet lip is needed when the edf unit is in the open air to help streamline the airflow into the edf unit. A reduction of 20% of thrust can be expected if an intake lip is not used.

Apr 7, 2009 · There are a variety of emerging electric motor designs that will prove important however incremental testing should be done after your first successful EDF design. The inlet lip has been discussed very frequently and many have different approaches to the design.

Apr 5, 2007 · I'm about to finish up the EJF/Sapac Red Arrows Hawk and I need to install the fan. I was wondering how to attach the lip to the fan. Is simply snapping on good enough? Doesn't seem an extremely tight fit. Is it normal to glue the intake lip to the fan? How do you normally secure the lip to the fan? SoCal, Year Round Flying!

Intake Ring for EDF JP Hobby 70mm. This is an Open Duct inlet lip especially for the use in the JP Hobby 70mm. Can be used for "Open Duct Systems" in your models, as also for testing your JP Hobby-70 unit at the bench! Specifications. Material: Aluminium; Shape: "trumpet" Weight: 12.1gr; Inside diameter: 71mm; Outside diameter (lip): 83mm

Aug 24, 2020 · The sharp edge around the EDF intake causes turbulence and reduced performance. You want a nice rounded intake lip like this , with a lip radius of at least 6% of the fan diameter. This will improve static thrust by a large amount.