Twin City 21-32
Verified
The Twin City 21-32 was built by Minneapolis Steel & Machinery Co. under the Twin City name, approximately 1926–1928, with about 302 built. FE (21-32) engine in a 17-28 chassis. After the 1929 merger that created Minneapolis-Moline, the later Twin City designs were assembled under the MM banner.
The serial ranges below are from Tony Thompson’s compiled Twin City serial record (hosted by the Minneapolis-Moline Collectors Inc.), drawn from factory archives. Use them to date a tractor, and confirm against the machine’s own number. We do not assert horsepower or other specifications here until confirmed against factory literature.
Serial Number Ranges
| Year | Serial range | Number type | Source confidence |
|---|---|---|---|
| 1926 | 150001 – 150062 | tractor plate | Verified High |
| 1928 | 150063 – 150302 | tractor plate | Verified High |
Specifications
| Nebraska Test | No. 127 (1926) |
|---|---|
| Manufacturer | Minneapolis Steel & Machinery Co., Minneapolis, Minn. |
| Brake HP (rated) | 32.34 hp @ 1004 rpm |
| Brake HP (max) | 35.875 hp @ 999 rpm |
| Drawbar HP (rated) | 22.30 hp @ 2661 lb pull |
| Drawbar HP (max) | 31.05 hp @ 5092.5 lb pull |
| Engine | Own make, 4-cylinder, valve-in-head |
| Bore x Stroke | 4 1/2" x 6" |
| Rated RPM | 1000 |
| Magneto | American Bosch ZR4 Ed26 |
| Carburetor | Zenith U6 |
| Fuel | Kerosene |
| Total Weight | 6189 lb (as tested with operator) |
| Speeds | Low 2.2 mph, High 2.9 mph (advertised) |
| Tested fuel economy | 9.64 hp·hr/gal |
| Test remark | During the limber-up run and the high-gear maximum test the clutch was adjusted, and during the maximum low-gear test the gear shift lever was locked in place. |
Specifications per the cited source below. Manufacturer-advertised figures can differ from tested values — confirm restoration-critical specs against factory literature.
Source: Nebraska Tractor Test No. 127 (1926) — Twin City 21-32
Factory Paint Colors
Body, wheel, and powertrain colors documented for this model's era by the MMCI Paint Committee. The exact part-by-part configuration, year breaks, and footnotes are in the full paint reference. Individual tractors vary — special orders and regional exceptions were common, so confirm against your own machine.
- Battleship Gray (body)
Finding Parts
We don't publish part numbers we can't verify against factory literature. The authority for this model's part numbers is its factory parts catalog; interchange is serial- and configuration-dependent, so always confirm against the parts book before buying.
Documented parts
Cataloged Minneapolis-Moline part numbers documented for this model. Applications vary by serial, year, and configuration — confirm against your parts book before ordering.
Clutch
- FT408 — Clutch friction disc, 11.5" OD x 6.25" ID x 0.155"
Surviving Examples (collector-reported census)
Owner-submitted survivors, reviewed before publishing. Collector-reported — these corroborate, but do not establish, the documented serial ranges above.
- 1 known survivor
- Serials observed: 153,672–153,672
Add your Twin City 21-32 to the registry → Browse the full census →
Sources & Verification Notes
Status: Verified
Primary source: Twin City Tractor Serial Numbers — Tony Thompson (MMCI) tier 2
Last checked: 2026-05-31
Where this model fits in the Minneapolis-Moline history & timeline →
Owner Notes & Questions
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