Twin City 21-32 FT / FTA
VerifiedThe Twin City 21-32 FT / FTA was built by Minneapolis Steel & Machinery Co. under the Twin City name, approximately 1929–1938. 21-32 FT (1929–34, 3,973 made) and FTA (1935–38, 2,950 made); FTA evolved into the MM GT. 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 |
|---|---|---|---|
| 1929 | 150303 – 151796 | tractor plate | Verified High |
| 1930 | 151797 – 154073 | tractor plate | Verified High |
| 1931 | 154074 – 154123 | tractor plate | Verified High |
| 1932 | 154124 – 154129 | tractor plate | Verified High |
| 1934 | 154130 – 154275 | tractor plate | Verified High |
| 1935 | 154300 – 155381 | tractor plate | Verified High |
| 1936 | 155382 – 156247 | tractor plate | Verified High |
| 1937 | 156248 – 156908 | tractor plate | Verified High |
| 1938 | 156909 – 157229 | tractor plate | Verified High |
Specifications
| Nebraska Test | No. 152 (1928) |
|---|---|
| Manufacturer | Minneapolis Steel & Machinery Co., Minneapolis, Minn. |
| Brake HP (rated) | 32.37 hp @ 1075 rpm |
| Brake HP (max) | 39.14 hp @ 1075 rpm (operating max, 98% of max load) |
| Drawbar HP (rated) | 22.58 hp @ 2499 lb pull |
| Drawbar HP (max) | 30.20 hp @ 3335 lb pull |
| Engine | Own make, 4-cylinder vertical (head 'I'), mounted lengthwise |
| Bore x Stroke | 4 1/2" x 6" |
| Rated RPM | 1075 |
| Magneto | Robert Bosch FU4 |
| Carburetor | Stromberg M3, 1 1/2" |
| Fuel | Gasoline |
| Total Weight | 6463 lb (as tested with operator) |
| Speeds | Low 2.36 mph, Intermediate 3.17 mph, High 4.45 mph, Reverse 1.74 mph |
| Tested fuel economy | 9.16 hp·hr/gal |
| Test remark | Before the maximum belt test was run, the packing gland nut on the water pump was tightened; during the maximum low-gear drawbar test the clutch was adjusted. |
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. 152 (1928) — Twin City 21-32 FT / FTA
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.
- MM-TC 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.
Carburetor
- K5A — Zenith carburetor (MM# GE6 & GE6A)
- TTX-16 — Schebler carburetor (MM# GE6B)
- TTX-5 — Schebler carburetor (MM# KE817C)
- TTX-6 — Schebler carburetor
- UT2 — Stromberg carburetor (MM# FE385C)
Hose
Oil Filter
- KE5905 — 4" cartridge oil filter
Surviving Examples (collector-reported census)
No tractors registered for this model yet. The MinnieMo registry is owner-submitted and moderator-reviewed — help start the 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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