Vintage RC Helicopters - Kalt Hughes 500

KALT Hughes 500D

Kalt Hughes 500D (1974)

Forth in the Kalt range and another scale model utilising the Kalt 'Flatbed' mechanics with fixed pitch rotor head.

Collective pitch upgrade

1981 Catalogue photos

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 however as the model already had the '500' tally as it was a Hughes 500 the name could not be amended to differentiate from the original fixed pitch version.

	Length (less rotor) - 49 inch
	Main Rotor diameter - 58 inch
	Rotor Head - Any Kalt CP version
	Weight - 10 to 11 Lbs
	Engine - .50/.60 cu in (8.0/10 cc)
	Reductions - 10.5 : 1 : 4.2
	Radio - Four/five channel with five servo's

1985 Circus Hobbies catalogue

By 1982 the flatbed mechanics had been upgraded with autorotation and the basic kit was marketed to include the K-1SB rotor head assembly as noted in the photo's below.

Uprated Autorotation mechanics with K-1SB head assembly.

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