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MITCHELL COUNTER CLOCKWISE MECHANICAL TACHOMETERS

From $25.00 to $262.95
Mitchell Model Direction of
Rotation
Avg. Cruise
RPM
PN Price Buy
D1-112-5030Counter-Clockwise2300
10-24630
$262.95
Quantity
D1-112-5124Counter-Clockwise2050
10-24624
$262.95
Quantity
D1-112-5032Counter-Clockwise2566
10-24632
$262.95
Quantity
D1-112-5029Counter-Clockwise1800
10-24629
$262.95
Quantity
Subtotal $0.00
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Overview

In 1985 AC discontinued production of the popular “RT” series of mechanical tachometers. Mitchell immediately entered the market to fill the void. These tachs feature exceptional accuracy and reliability. Mitchell tachs come with a factory-direct 2 year warranty. The range on all models is 500 to 3500 RPM. Accuracy is +/- 25 RPM from 1000 to 3000 RPM. Determine the correct part number from the chart below. All Mitchell tachs are FAA approved to TSO-C49b for certified aircraft.

$56.75 for custom range marks (specify ranges, 45 day lead time).
$25.00 to set hours (specify hours, 45 day lead time).

Direction of rotation is defined as when viewing the front of the tachometer.

Reference Chart

IFR P/N MITCHELL P/N STEWART WARNER NO. AC TYPE DIR. OF ROTATION AVG. CRUISE RPM

Aero Commander: A9, A9A, A9B
Aeronca: 15AC Sedan
Alon: F1, F1A, A-2, A-4 & 415C. D, E, F, G (Including Ercoupe and Forney)
Grumman/American: AA-1, AA1A, AA-5
Beech: C35, D35, E35, F35
Bellanca/Champion: 7EC, 7FC, 7GC, 7HC,7GCB, 7K, 7ECA, 7GCAA, 7GCBC, 7KCAB, 8KCAB, 260, 14-19, Viking 300, Turbo Viking
Call: A2, A3, A4, A5, A9
Cessna: 120, 140, 170, 180, 182, 185 (with IO-470 eng.) 188, 336, 337
Culver: Cadet
Lake Aircraft: C-1, C-2, L-4, LA-4SC, LA5
Mooney: Mark 20, 20A, 20D, 21, 200, 201, 202, 220
Piper: PA12, PA16, PA18, PA20, PA22, PA23, PA24, PA25 PA28, PA30, PA32, PA39
Rockwell--112, 114
Taylorcraft: 19,15A, 20, 20AG, Zephyr
Temco: (Swift; GC-1, GA-1B)

55-35-7
D1-112-5023
P-551-AZ
RT-7
Clockwise
2300
Beech: 35, A3S, B35, 35R
55-35-8
D1-112-5122
P-551-AYZ
RT-8
Clockwise
2050
Aeronca--Champion, Chief (early models) Piper--PA15, PA18, (W/TCM eng)
55-35-9
D1-112-5030
P-551-AZH
RT-9
Counter- clockwise
2300
Aeronca--Champion, Chief (late models)Champion--7AC, 11AC, 7CCM Beech--All Musket
55-35-10
D1-112-5124
P-551-AZJ
RT-10
Counter- clockwise
2050
Bonanza Models-G35 thru V35, V35TC, 36, A36, 95, B95, B95A, D95A Cessna: 150, 152, 172, 177, 185 & 188 (with IO-520 eng), 206, 207, 210, 310, 320 Helio: H250, H391, H392, H395 Navion: E, F, G Stits: SA9A, SA9B
55-35-11
D1-112-5025
P-551-TA
RT-11
Clockwise
2566
Bellanca/Champion--7AC Stinson--105,108
55-35-12
D1-112-5032
P-551-AZK
RT-12
Counter- clockwise
2566
Aero Commander (Ayres Corp.) B1A, S2B, S2C, S2D, S2R Stearman--A75 (P & W eng.)
55-35-14
D1-112-5028
P-551-AZA
RT-14
Clockwise
1800
Cessna--175
55-35-15
D1-112-5034
P-551-AZB
RT-15
Clockwise
3000
Grumman--G164
55-35-16
D1-112-5029
P-551-AZL
RT-16
Counter- clockwise
1800
Maule--M5/6/MX7-180, M5/6/7/MX7-235
55-35-17
D1-112-5024
N/A
RT-17
Clockwise
2400

*The specific tachometer listed is best suited if the installation has this approximate cruise rpm. Direction of rotation must be compatible with the previous tachometer that was used.

Specifications

  • Instrument Size: 3-1/8”
  • Dial Range: 300 -3500 RPM
  • Weight: 13 Oz.
  • Accuracy: +/- 25 RPM, 1000 – 3000 RPM
  • Depth: 3-1/2”
  • Approval: TSO C49b
  • Warranty: 2 years Factory Direct
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Reviews

Instrument arrived alive and on time. Price was the price everything in aviation is pricey, so no opinion there. The instrument is installed but due to weather, hasnt been operated. The mechanic had a bit of trouble installing it directly into the Aeronca 7AC panel hole some modifications were required. Overall, the rating is favorably neutral until we can use it in flight---spring, perhaps. Aloha.

Paul B
January 12, 2020

Had the Tach Time set. Numbers misaligned. Shipped it back to Mitchell whose response is that is the way they are. Had markings put on the tach but they are not visible looking at the tach from the pilots seating position. I would spend the extra money and get a different tach.

Hamed M
February 11, 2017

Q&A

Q: What is the ratio on the D1-112-5030 tach?

Per the manufacturer the ratio is 2:1.

Q: With respect to tachometers does clockwise or counter clockwise refer to the sweep of the hand on the gauge face or the direction of rotation of the cable?

Direction of rotation is defined as when viewing the front of the tachometer, Direction of rotation must be compatible with the previous tachometer that was used.