Adler Trumpf Junior: which version to buy
If you are comparing an Adler Trumpf Junior to another car, or a 1939 example to a later one, the catalogue does not split the model into Sport, luxury, or extra-power packs. 1 generation, Roadster body, 1 version: 1.0 MT. Years in production for both the generation and that version are 1934-01-01 to 1941-12-31.
If you are comparing an Adler Trumpf Junior to another car, or a 1939 example to a later one, the catalogue does not split the model into Sport, luxury, or extra-power packs. 1 generation, Roadster body, 1 version: 1.0 MT. Years in production for both the generation and that version are 1934-01-01 to 1941-12-31. There is no second horsepower figure under the same name, so you do not have a “25 hp vs something else” fork. What you can still do with the numbers is check whether 1.0 MT is the car you think it is: 25 hp (18 kW) at 4000 rpm from 995 cc, Gasoline, Inline 4, 2 valves per cylinder, boost No, Carburetor, compression 5.6, bore and stroke 65 × 75, Manual 4, FWD, top speed 90, tank 28. Torque, 0–100, consumption, kerb weight, gross weight, ground clearance, and wheel size are not measured.
Search phrases such as Adler Trumpf Junior for sale, price, kaufen, wert, Sport, or Ersatzteile describe the market, not this table. This text does not quote prices or listings. It only ranks the one version that exists in the data.
Generations: what changed between generations
There is 1 generation, so there is no later generation that added power, a second body, or a restyle you can pay extra for.
1 generation ran 1934-01-01 to 1941-12-31. Body: Roadster. Versions in this generation: 1 — 1.0 MT. The same start and stop dates apply to 1.0 MT. Restyling is not listed as a separate generation, so you do not treat a 1939 car as a different generation from a 1934 car in this catalogue.
What that means for a buyer: a Trumpf Junior Sport search and a plain Trumpf Junior car search still resolve to this one generation and this one 1.0 MT line. You cannot buy a later generation that “fixed” tank size, brakes, or drive. Front and rear suspension for 1.0 MT are both Independent, leaf spring. Front and rear brakes are both Drum. Drive is FWD. Engine position is not measured.
Engine and specs: Adler Trumpf Junior engine (1.0 MT)
The Adler Trumpf Junior engine in the data is the 1.0 MT unit only. Displacement 995 cc, fuel Gasoline, cylinders 4, layout Inline, valves per cylinder 2, boost No, induction Carburetor, compression 5.6, bore × stroke 65 × 75. Peak power 25 hp / 18 kW at 4000 rpm. Peak torque not measured (rpm not measured). Gearbox Manual, gears 4, drive FWD.
| Version | hp | Nm | Displacement (cc) | Fuel | Cylinders | Layout | Boost | Gearbox | Drive |
|---|---|---|---|---|---|---|---|---|---|
| 1.0 MT | 25 | not measured | 995 | Gasoline | 4 | Inline | No | Manual | FWD |
Power per litre (arithmetic on given figures): 25 hp ÷ (995 / 1000) L = 25.13 hp per litre (rounded to two decimals). In kW: 18 kW ÷ 0.995 L = 18.09 kW per litre. There is no second version to compare that specific output against. The extra “money” in a two-version catalogue would buy more hp, more Nm, or a different gearbox; here those columns do not move because there is only 1.0 MT.
Compression and boost: compression 5.6, boost No. You are not choosing a boosted 1.0 MT versus a naturally aspirated one. Valves per cylinder 2 is the only valve count listed.
Stroke versus bore (from 65 × 75): stroke 75 minus bore 65 = 10 (same units as the given pair). The engine is not a second, larger 1.0 MT; displacement stays 995.
Gearbox and drive: Manual 4, FWD. There is no automatic and no other drive type in the table, so you cannot trade 1.0 MT for a different transmission in this model line.
Performance, top speed, and mpg: what 1.0 MT actually measures
0–100: not measured for 1.0 MT. Do not treat a missing sprint time as “this car has no acceleration”; the figure was not recorded in the source.
Top speed: 90 for 1.0 MT. With 25 hp that is the only speed figure you can use. There is no second version with a higher top speed, so a Sport-labelled search does not unlock a faster row here.
Fuel consumption (mpg / L/100 km style fields): city not measured, highway not measured, mixed not measured. CO2 not measured. Eco class not measured. Fuel type field (separate from engine fuel Gasoline) not measured. A buyer comparing “mpg” across ads cannot use this catalogue to pick a more economical Trumpf Junior, because 1.0 MT has no consumption number.
Tank versus missing consumption: tank 28. Without mixed consumption you cannot compute range from these data. 28 is the only volume given; it does not change by generation.
Dimensions, weight, and tank: what you cannot ratio
Kerb weight: not measured. Gross weight: not measured. Therefore weight per horsepower is not measured: you cannot divide mass by 25 hp. Anyone selling on “light for 25 hp” is using a number this table does not contain.
Ground clearance: not measured. Wheels: not measured. You cannot choose 1.0 MT for tyre size or ride height from these fields.
Tank: 28. That is the one dimension-adjacent figure that is present. Suspension: front Independent, leaf spring, rear Independent, leaf spring. Brakes: front Drum, rear Drum. Those are the same on both axles; there is no “front disc / rear drum” variant to prefer.
Which version to choose
Short answer: choose 1.0 MT or do not buy an Adler Trumpf Junior from this catalogue. There is no second version name, no second hp under the same name, and no second generation.
What the numbers buy you if you take 1.0 MT
- Power: 25 hp / 18 kW at 4000 rpm.
- Specific output: 25.13 hp/L from 995 cc.
- Layout: Gasoline, Inline 4, 2 valves per cylinder, boost No, Carburetor, compression 5.6, 65 × 75.
- Driveline: Manual 4, FWD.
- Body and era: Roadster, 1 generation, 1934-01-01–1941-12-31.
- Speed: top speed 90; 0–100 not measured.
- Fluids and mass: tank 28; consumption not measured; kerb and gross weight not measured.
- Chassis: independent leaf spring front and rear; Drum brakes front and rear.
What extra money cannot buy in this line
There is no higher-hp 1.0 MT, no automatic, no other drive, no extra body type, and no generation 2. A listing tagged Sport, 1939, or “motor” still has to match 1.0 MT if it is this model in this data. Ersatzteile and kaufen are shopping queries; they are not extra rows.
Reliability and problems
The source does not list reliability scores, common failures, or spare-parts availability. Those searches are real; the measurements are not in the data. What you can say without invention: Carburetor, boost No, Drum on both ends, Independent, leaf spring on both ends, FWD, Manual 4. Missing torque, mass, and 0–100 mean you cannot judge load or sprint from this page.
Buyer checklist against 1.0 MT
1. Confirm the version name is 1.0 MT, not a renamed engine. 2. Confirm 25 hp / 18 kW at 4000 rpm and 995 cc. 3. Confirm Gasoline, Inline 4, 2 valves per cylinder, boost No. 4. Confirm Manual 4 and FWD. 5. Confirm Roadster and dates inside 1934-01-01–1941-12-31. 6. Treat torque, 0–100, mpg, weights, clearance, wheels, engine position, fuel-grade field, CO2, and eco class as not measured. 7. Do not expect a second generation’s “improvements”; pokoleniy is 1.
If those seven points match the car in front of you, you are looking at the only Adler Trumpf Junior version this catalogue defines. If any of them differ, it is not a different official version here — it is outside this table.