Kalt JetRanger (1972)


  Specification:

  500 600
 Length  1360 mm  1400 mm
 Rotor Head  CP model specific  
 Main Rotor Dia  1480mm  1480 mm
 Engine  .50-.60 cu (8.0-10 cc)  Enya 60/OS 60
 Gear Ratio  10.5 : 1 : 4.2  10.5 : 1 : 4.2
 Weight  4500 - 5000 g   4200 -4800g

 

Documents: 
      
plan Kalt Jet Ranger 600
Reports
 
  

 

 

 

 

Follow on model from the original Kalt Cobra 450 utilizing Kalt's flatbed mechanics for the Enya 45BB plus fixed pitch rotor head.

Nov 72 first Japanese helicopter competition

 

Kalt JetRanger 404
JetRanger with Flatbed- mechanic.

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Kalt JetRanger 500 (1979 or earlier)

1981 Catalogue photos including Flybarless head option.

By the end of the 70's, fixed pitch control had generally been assigned to 'trainers' and so the JetRanger was upgrade to take a collective pitch head and autorotation clutch.  In line with Kalt's policy the kit was provided without a rotor head and the customer chose the specification of the head themselves.  For this later model the OS 50H became the minimum size recommended engine and thus this version was given the '500' tally to differentiate from the original fixed pitch version.

Revised 500 Mechanics with modified gearbox

By 1981 the flatbed mechanics had been upgraded with autorotation and though the catalogue photo's above show a Flybarless head, the basic kit was marketed to include the K-1SB rotor head assembly as noted in the photo's below; the '500' designation was also 'dropped'.

Uprated Autorotation mechanics with K-1SB head assembly.  
OS 50H engine fitted and K-1SB head.

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1985 Circus Hobbies (USA) catalogue
with Flybarless head option in the photo but listing the standard supply head as the K-1SB.   

 

Kalt JetRanger 600

Fixed pitch helicopter with Kalt's flatbed mechanic. Fuselage almost the same as from JetRanger 500.

 

Some photos from the flat-bed mechanic with modified tail drive.

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