Twin City 40-65
VerifiedThe Twin City 40-65 was one of Minneapolis Steel & Machinery’s big prairie tractors, built roughly 1910–1924 — a heavyweight from the dawn of the gas-tractor era and among the oldest MM predecessors documented here.
Identification & configuration
Per the compiled record, the 40-65 used a large four-cylinder engine (about 7¼ × 9 bore/stroke), with later ‘A’ and ‘B’ engine variants. Its serial numbers were shared with the six-cylinder 60-90.
See the Twin City overview and predecessors guide.
Factory paint
These prairie tractors predate the documented MMCI paint tables (which begin in the late 1910s); verify original finish against period evidence rather than the later Twin City gray standard. See the full paint reference.
What to verify
- Shared serials: the 40-65 and 60-90 shared the 1001–1825 number block; the lookup returns both — confirm by engine (four- vs six-cylinder).
- Engine variant: ‘A’ vs ‘B’ affects bore/stroke; verify against the record.
Sources & Verification Notes
Serials and engine notes per Tony Thompson’s compiled Twin City record (MMCI). No horsepower or production-count figures are asserted beyond what the cited sources state.
Serial Number Ranges
| Year | Serial range | Number type | Source confidence |
|---|---|---|---|
| — | 1001 – 1825 | tractor plate | Verified High |
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.
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