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'Stepper Motor' Racing Gauges and Tachs
The next generation in instrumentation

SMi™ Stepper motor gauges use a small electronic motor that only turns a tiny fraction of a rotation to drive the pointer. It is electronically controlled and is much more precise than the traditional mechanical instruments whose accuracy can be affected by many factors. Many professional race teams - NASCAR™, etc. – are switching to this style of gauge for the improved accuracy (see the in-car cameras). Approved for use by IMCA™.

Built-in Warning Lights – Ultra Bright 2 Stage LED
2 set points are easily adjusted to your needs (critical oil pressure has 3 set points). For example set water temp for just above normal running temp (if you run 215° set it at 230°). Above that the LED comes on to let you know the motor is starting to get warm. Set the second one at the max temp your engine can tolerate (say 250°). At this point the LED flashes to attract your attention, possibly saving motor damage.

Since oil pressure is so critical it has 3 set points.
You can set the first just below normal running pressure (say normal is 60 psi – set it at 50 psi – no damage there). At this point the LED comes on. Set the second at 35 psi. The LED flashes – you need to know here, possible damage. Set the third at 20 psi. Engine damage is likely here. At this third set point the LED continues to flash PLUS the gauge backlight starts to flash. It’s hard to miss this – day or night. It allows you to get the engine shut down before it blows up, saving you $$.

The Gauges

• 3 Gauge panel with OP 0–100 psi, WT 100°-280° and OT 100°-340°
• Gauges are 2-5/8” and have a molded polycarbonate / ABS case (virtually unbreakable)
• An electronic sensor (incl.) is installed on the motor to drive the gauge - no oil or fuel in the driver’s compartment for safety.
• Thru-the-dial LED backlights and an illuminated pointer make these easy to read at any speed
• ”Presentation” at turn-on - Gauges go through a self test. Pointers swing full scale and all LEDs come on
• Great looking Aluminum Panel - black anodized with clean, modern graphics - pre-wired and ready for installation
• Can be used with 12 & 16 Volt negative ground systems with or without an Alternator

The Tach

• Maximum RPM recall - Just push the Recall button
• High RPM Warning light - 2 stage - First warning can be set for just over your normal maximum RPM, the second stage at the redline. You get a warning of too many revs before you blow an engine. Can also be used as a 2 stage shift light.
• LED back light - Back light shows through the dial face PLUS the pointer is LED illuminated to make this the easiest tach to read - and super sharp looking too
• Stepper motor precision tach at an affordable price

 

NOTE: These electronic gauges are not intended to be waterproof. Cover the gauges if the car interior is to be washed down.

 

 

Specifications
Gauges
	Brand:	AccuTech™ SMi™
	Style:	Stepper Motor
	Type:	Electronic
	Size:	2 5/8" diameter
	Face Color:	Black
	Bezel Color:	Black
	Pointer Color:	Red LED illuminated
	Oil Pressure Included:	Yes
	Oil Pressure Range:	0-100 psi
	Oil Pressure Sensor Wiring:	5' lead length
	Oil Pressure Sensor Fitting:	1/8" NPT
	Oil Pressure Power Draw:	61mA @ 12v
	Water Temperature Included:	Yes
	Water Temperature Range:	100º-280º F
	Water Temperature Sensor Wiring:	6' lead length
	Water Temperature Sensor Fitting:	1/2" NPT
	Water Temperature Power Draw:	62mA @ 12v
	Oil Temperature Included:	Yes
	Oil Temperature Range:	100º-340º F
	Oil Temperature Sensor Wiring:	6' lead length
	Oil Temperature Sensor Fitting:	1/2" NPT
	Oil Temperature Power Draw:	62mA @ 12v
	Fuel Pressure Included:	No
	Voltage Gauge Included:	No
	Tachometer Included:	Yes
	Gauge Backlights:	Blue
	Gauge Warning Lights:	Yes
	Run on 12v System:	Yes
	Run on 16v System:	Yes
	Waterproof:	No
Tachometer:
	Brand:	AccuTech™ SMi™
	Style:	Stepper Motor
	Range:	0-10K RPM
	Memory:	Yes
	Size:	4 1/2" diameter
	Face Color:	Black
	Bezel Color:	Black
	Pointer Color:	Red LED illuminated
	Backlight:	Yes
	Tachometer Power Draw:	106mA @ 12v
	Waterproof:	No
Panels:
	Material:	Aluminum
	Finish:	Black anodized
	Gauge Panel Dimensions:	15" x 4 5/8"
	Sensors Included:	Yes
	Wiring Included:	Yes