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ST 400 Professional Tachometer
ST400
 

Replay - on the tachometer - up to 25 minutes of RPM data. Review your shift points, choice of gear, gearing and use of the engine’s power band.

 

ST400 3.5

 
Key Features    


ST400 dial scale Options

    

Scales optimised to suit engine's operating range

To order state model and required RPM scale, e.g. ST400 0-3-8500

 

Peak RPM Telltale memory - Playback on Tachometer

Specify either:


Product Change
All variants of the ST400 will now be supplied with a white needle, and white backlighting.

 
 

The original and still the best genuinely professional tachometer. This race-proven and award winning design guarantees exceptional accuracy and robustness over many years of use.

Professional Tachometers now feature RPM data acquisition and on-dial playback as standard recording up to 25 minutes of RPM history.

The ST400 Recording Tachometer was Stack's first product, which in its day (more than twenty five years ago) provided the only on-vehicle solution for accurate RPM display and logging. As a direct result, this unit immediately gained widespread acceptance with Formula One teams and all forms of professional motorsport.

These tachometers have a 3.5"/88mm bezel and are a direct replacement for most standard tachometers.
 
 

Specifications
ALL MODELS - Unless otherwise specified
Operating Temperature  -20 deg C to +70 deg C
Storage Temperature  -40 deg C to + 80 deg C
Accuracy Linear dials  +/- 0.6% over temperature range
Non linear dials  +/- 0.45% over temperature range
Humidity  0-95% Non-condensing
Vibration  10-55Hz 5mm pk; 55Hz-1KHz 30g 12 hours
Supply  0.25 Amperes @ 8-16 Volts D.C.
Nett Weight  ST400: 400 grams; ST430: 475 grams
Dimensions ST400 88mm (3.5in) diameter x 75mm (3.0in) deep
Dimensions ST430:  123mm (4.9in) diameter x 75mm (3.0in) deep
Fixing details ST400:  80mm (3.15in) diameter cut-out
Fixing details ST430:  80mm (3.15in) or 116mm (4.6in) diameter cut-out
Backlighting  Solid-state white LED
Shift RPM Limit  User adjustable within the range of the dial face
Electrical Outputs  Pseudo open collector type (200 mA current sink maximum switched to battery negative)
ST400-12 Min/ST430-12 Min
Record Capacity 12 Minutes
Record Interval 0.05 Seconds (20Hz)
Record Accuracy +/- 0.25% over total temperature range
ST400-25 Min/ST430-25 Min
Record Capacity 25 Minutes
Record Interval 0.1 Seconds (10Hz)
Record Accuracy +/- 0.25% over total temperature range

Download Specification Sheet (50k PDF file)

 
 
 

Frequently Asked Questions
If you haven't been able to find the information above then we can offer more help here in our FAQ section. If you are having trouble finding a solution then please contact your dealer who will be happy to assist you.

 

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Stack is a leading supplier of solutions for data acquisition in Motorsport with over 25 years of proven experience and service.

Applications including data loggers, lap timers, dash displays, tachometers, instruments and gauges, analysis software, and unique harsh environment data acquisition products for all forms of motorsport.
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