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Speedograph Richfield

Synonymous with Quality Speed Products.

INSTRUMENT DRIVES

The table illustrates the drives which are supplied at the time of ordering. Drives with a 1:2 ratio are only used when the input speed for full scale deflection is below 250 RPM.

Description	Input axis relative to pointer axis	LH or RH Offset	Connection	Non reversing or reversing	Input drive to instrument drive ratio
Flex drive end	Concentric		1.1/4” x 20 TPI union nut		1:1
Extended spindle	Concentric		7 mm Dia spindle x 32 mm long		1:1
Angle drive (ADI)	90 degree offset	LH	1.1/4” x 20 TPI union nut	Non Rev	1:1 1:2
				Reversing	1:1 1:2
			7 mm Dia spindle x 32 mm long	Non Rev	1:1 1:2
				Reversing	1:1 1:2
		RH	1.1/4” x 20 TPI union nut	Non Rev	1:1 1:2
				Reversing	1:1 1:2
			7 mm Dia spindle x 32 mm long	Non Rev	1:1 1:2
				Reversing	1:1 1:2

INSTRUMENT DRIVES

Flex Drive End:  1.1/4 x 20 TPI Union Nut with 3.70 mm Male Square Drive.

Extended Spindle: 7 mm Dia. shaft x 32 mm long suitable for pulley or spring coupling (see accessories).

Angle drive (Code AD1) Clamps to back of instrument, has 1.1/4” x 20 TPI male thread to take flex drive

Speedograph Richfield Automotive division

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