Posts Tagged ‘#windmachines

25
Jan
17

Wind Machines

Well I never for a moment realised how much was involved in a wind machine, or how hard it is to find any information regarding them and their use.

I will provide you all with a simple comparison between a range of the units that we hire. Anyway below is my take on the subject and the technical details.

I guess the most important thing that I have learned regarding wind machines is that it’s not all about power and the amount of air moved.

We need to think about wind machines in terms of spread and power, much like a light.

For example do you want your wind machine to blow the hair of just one model or are you trying to flutter a group? Obviously if you are just aiming at one model then a narrow channel of wind is great but if you are going for a group “blow” then a wider spread would be better.

Power is obvious, the harder it blows the more movement you will get in the subject but control is the key here, what you are looking for is the ability to vary the intensity of the wind from a gentle breeze to a full on hurricane and varying levels in between.

There are other factors to consider such as the method of control; use a DMX or a remote? The size, weight, and the amount of noise it makes during operation need to be thought about in relation to your project.

Also a rapid on or off “bump/gust” feature is useful. For example, in a film scene when a door is opened or closed, a rapid on/off feature would be useful.

And finally, the ability to disperse smoke, fog, fake snow, or dust (normally fullers earth) without destroying the machine is a bonus.

Personally I am a great enthusiast for waving a ½ poly board up and down for most “normal” looking movements in a models hair, its very basic but also very cheap and very effective for a one-off breeze of air. Having said that we are in the business of getting equipment out on hire so lets not recommend that too often and needless to say wind machines are far more consistent and precise and also don’t complain about having aching arms by lunchtime.

Detailed tech specs for our stocked units can be found at the end of this article.

The Bowens units are a “point and shoot”; they are neat and compact and have variable speed but do not allow for adjusting the spread of wind. The basic unit (now discontinued) has a corded remote and its two bigger brothers have wireless remotes.

The Reel EFX Turbo units both have an adjustable spread facility and a burst function, but no remote control.

The Mole Richardson is the big daddy of our range and has a bump function to rapidly increase the power and produce a blast above the set output. A DMX control and an “almost instant-off function” are standard features. It also has an integrated radial-vein collimator that narrows the spread of the wind but can be removed for a wider dispersal. This is the only unit we have that is actually recommended for the dispersal of dust. Exhaust fans from a plant hire store are great for this but are far less controllable.

1. Bowens Jet stream

Power Requirements 120V, 50/60 Hz, 2.5 Amps
Maximum Power 2,500 RPM, 940 CFM

 

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2. Bowens Jetstream 250

Output at 1 m 8MPS
Max Power 240V
Control Cable Length Wireless Remote
Length 315mm
Width 260mm
Height 260mm
Weight 9.6kg

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3. Bowens Jetstream 350

Output at 1 m 7MPS
Max Power 240V
Control Cable Length Wireless Remote
Length 390mm
Width 365mm
Height 365mm
Weight 13.3kg

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4. Reel EFX Turbo 2

Motor: Brushless, AC, Ball bearing

Power: 110 – 125v/4 amp or 220v/2 amp (50 – 60) cycle.  RPM 3450  CFM 2000

Controls: Solid state speed control, one touch blast

Weight: 20lbs

Mounting: Floor stand with adjustable tilt and universal mount, C stand, Junior stand

Dimensions: 14″L x 19″W x 22″H

Peak Velocity: (Focused Beam): 20mph at 10ft

Focused Beam: 10 degrees (3.5foot diameter beam at 10ft)

Flood: 45 degrees (8ft beam at 10ft)

 

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5. Reel EFX Turbo 4

 

Motor: 2 HP Baldor® Premium Efficient 3-Phase

Power: 110 – 125v/4 amp or 220v/2 amp (50 – 60) cycle.  RPM 3450  CFM 2000

Speed Control: Solid-state variable-frequency drive with active silent smart-switching & active power-factor correction

DMX Control: USITT-compliant DMX 512 w/5-pin XLR

Weight: 54 lbs

Mounting: steel floor stand with spud mount

Dimensions: 22″ x 24″

 

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6. Mole Richardson

Construction Sheet, Tubular Steel, 3 Blade Fan, 15′ power cable

Removable 1-1/8″ yoke pin

Rating 110-240VAC or DC, 3.25 Amps, on-off toggle switch on housing side

6″ Rheostat fan speed control switch

Rectifier with capacitor for AC or DC operation

Dimensions Housing: 26.25″ Diameter x 20″ Long (66.6 x 50.8 cm)
  Weight 88 lbs (40 kg)

 

 

 

 

 

 

 

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