Allgaier AP22S
Built: 1952–1956 · Series: AP
More machines from model year 1952
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Allgaier AP 16 to AP 22 (1950s) – the two-cylinders from Uhingen before the Porsche-Diesel: AP as range, the number as hp class, S as upgrade, air-cooled two-cylinder diesels to Porsche design of 1.4 to 1.5 litres
Allgaier of Uhingen near Göppingen is the origin of the Porsche-Diesel: the metalware maker built tractors from 1946, acquired the licence for Ferdinand Porsche's people's tractor design in 1949 and from 1950 built the AP 17 – the first tractor with a Porsche engine – before Porsche-Diesel Motorenbau GmbH in Friedrichshafen took over production in 1956. The type logic: AP stands for Allgaier-Porsche, the number for the hp class – AP 16 about 16 hp, AP 17 17 hp, AP 22 22 hp – S for the upgrade with improvements to gearbox and equipment, AP17-51 for the 1951 model year. The engines are the air-cooled two-cylinder diesels to Porsche design of 1.4 to 1.5 litres at 2,000 rpm, with the hydraulic clutch that gave the Porsche tractors their jerk-free starting and which the Allgaier models were the first to carry.
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The register lists 6 versions with 11.7 to 16.1 kW from two-cylinders of 1,374 to 1,531 cm³, unladen weights from 900 to 1,320 kg, lengths from 2,500 to 2,740 mm, widths from 1,052 to 1,460 mm and heights from 1,420 to 1,555 mm.
The Allgaier APs are the most sought-after collectors' pieces of the Porsche-Diesel scene because they embody the brand's prehistory; Allgaier built about 25,000 tractors up to 1955 and then turned to tooling and plant engineering.
On used tractors, originality, engine condition (Porsche-Diesel parts are reproduced), hydraulic clutch, gearbox and sheet metal count; parts run through Porsche-Diesel clubs and specialists.
Sources: SpecCodex register, model data: Allgaier AP, Allgaier (Unternehmen) (Wikipedia)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 22 hp (16.1 kW)correct |
| Rated speed | 2,000 rpmcorrect |
| Cylinders | 2correct |
| Displacement | 1,531 cm³correct |
| Cooling | air-cooledcorrect |
Dimensions and weights
| Length | 2,550 mmcorrect |
|---|---|
| Width | 1,052 mmcorrect |
| Height | 1,420 mmcorrect |
| Wheelbase | 1,620 mmcorrect |
| Unladen weight | 900 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 5/1-Getriebecorrect |
| Forward gears | 5correct |
| Reverse gears | 1correct |
| Front tyres | 5.00-16correct |
| Rear tyres | 8-24correct |
| Top speed | 20 km/hcorrect |
Origin and approval
| Construction | frameless unit constructioncorrect |
|---|
Where this model stands
Power-to-weight ratio: 17.9 kW/t (16 kW / 0.9 t)
Power class: Compact (< 40 hp)
Stronger than 9% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Allgaier AP22S have?
The Allgaier AP22S delivers 22 hp.
How much does the Allgaier AP22S weigh?
The unladen weight is 900 kg.
What engine does the Allgaier AP22S have?
2 cylinders, 1,531 cm³ displacement, Diesel.
How fast does the Allgaier AP22S go?
Top speed is 20 km/h.
What are the dimensions of the Allgaier AP22S?
2,550 mm × 1,052 mm × 1,420 mm.
When was the Allgaier AP22S built?
Production years: 1952–1956.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 21 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.