Hummel A 65/20
Built: 1967 to approx. 1900s · Series: A
More machines from model year 1967
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Hummel A 65/20: air-cooled two-cylinder diesel engine with 1,005 cc displacement and 20 hp as a lightweight small tractor for agricultural and municipal use in the 1960s
The A 65/20 belongs to the small two-cylinder diesel tractors built during the 1960s for smaller farms and municipal use. Air-cooled two-cylinder engines of this class were a rugged, low-maintenance alternative to larger water-cooled tractors.
Read on 3 more paragraphs
The air-cooled two-cylinder diesel engine has a displacement of 1,005 cc and produces 20 hp. At an unladen weight of 1,050 kilograms, this is a light, compact tractor whose power was sufficient for smaller plots, trailer work and driving mounted implements through the power take-off.
Tractors of this class fall under driving licence category T; the power take-off on such machines runs at the standard speed of 540 or 1,000 rpm, so that mounted implements fit regardless of manufacturer. The air-cooled engine needs no radiator, water pump or antifreeze, making it robust against frost and simple to maintain.
When buying such an old two-cylinder machine, it is worth checking the cooling fins on the cylinder and head, which should be free of oily, caked deposits, as well as compression and smoke behaviour on a cold start. Bearings on the front axle and steering, the condition of the clutch and the tightness of the injection pump also belong in the inspection. The steering box and front axle bushings deserve a look too, since a machine this old and this rare can be hard to source replacement parts for.
Sources: SpecCodex-Register: Kennwerte des Modells A 65/20
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Fuel | dieselcorrect |
| Power | 20 hpcorrect |
| Power | 20 hpcorrect |
| Rated output | 20 PScorrect |
| Cylinders | 2correct |
| Displacement | 1,005 cm³correct |
| Displacement | 1005 cm³correct |
| Cooling | air-cooledcorrect |
| Cooling system | Luftcorrect |
Dimensions and weights
| Unladen weight | 1,050 kgcorrect |
|---|
Drivetrain and chassis
| Drive type | Getriebecorrect |
|---|
Origin and approval
| Production period | 1,967correct |
|---|
Other data
| Standard tyres | Motorcorrect |
|---|---|
| Traktor-herstellern verbaut | Bautzcorrect |
Where this model stands
Power-to-weight ratio: 14 kW/t (15 kW / 1.1 t)
Power class: Compact (< 40 hp)
Stronger than 7% 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 Hummel A 65/20 have?
The Hummel A 65/20 delivers 20 hp.
How much does the Hummel A 65/20 weigh?
The unladen weight is 1,050 kg.
What engine does the Hummel A 65/20 have?
2 cylinders, 1,005 cm³ displacement, Diesel.
When was the Hummel A 65/20 built?
Production years: 1967–19??.
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.
- 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 16 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
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Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.