Stolle 6/40 hp

Stolle
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6/40 hp
Production period:	1924-1925
Class :	Middle class
Body versions :	Touring car , convertible , roadster , limousine
Engines:	Otto engine : ; 1.5 liters (29.4 kW)
Length:
Width:
Height:
Wheelbase :	2875 mm
Empty weight :	1400 kg

The Stolle 6/40 PS built by Vorster & Stolle Motoren was a vehicle in the upper price range. When the car was presented to the public, the specialist press spoke of a small Maybach given the technical equipment and workmanship . The price of a complete chassis was between 10,000 and 12,000 marks, with the body around 15,000 marks. Around 15 vehicles are said to have been built, two of them with slide engines .

chassis

The basis for the car was a cranked ladder frame made of U-profiles with three cross struts and an aluminum engine and gear table . This design meant that the engine and gearbox could be installed deeper than usual and the seating position was also lower. The front axle was a fork axle with semi-elliptical springs with gaiters , the rigid rear axle was also suspended from semi-elliptical springs and additional quarter- elliptical springs. The spring bolts were guided in needle bearings . Gabriel band shock absorbers were installed on the front and rear axles. A worm steering was used as the steering . The foot brake acted as an outer band brake on all four wheels , the hand brake acted as an inner shoe brake only on the rear wheels. Both brakes were built into the ribbed light metal brake drums. The brake drums were in two parts, on the outside a large, ribbed aluminum drum to which a smaller conventional brake drum was flanged on the inside. The brakes then acted on them. The spoke wheels were fitted with balloon tires measuring 775 × 145. The chassis was 287.5 cm long and had a track width of 130 cm. Complete vehicles weighed around 1400 kg.

The dashboard support was made of cast aluminum, the instrument panel was screwed to the bulkhead and equipped with a speedometer, odometer, tank pressure indicator, clock, beeper, rotary knob for mixture regulation, reserve hand pump for fuel delivery and ignition and headlight switch.

Power transmission

The drive took place via an unsynchronized four-speed gearbox with a center shift lever guided in a backdrop via a cardan shaft with two roller-bearing, permanently lubricated universal joints on the rear axle with straight-toothed bevel gear drive.

engine

The engine (W2) was a four-cylinder four-stroke in-line engine with an overhead camshaft that was driven by a vertical shaft. The gray cast iron cylinder head was removable, the piston, crankcase and oil pan were made of light metal, the cylinders were made of gray cast iron. The displacement of 1496 cm³ resulted from a 69 mm bore and 100 mm stroke . With a compression ratio of 1: 4.5, the engine developed 40 hp at 3500 rpm. The crankshaft had four bearings in roller bearings, as were the connecting rod feet. The overhead, hollow-bored camshaft with oil outlet holes had triple roller bearings. The cooling was a thermosiphon cooling with fan and Windhoff cooler. The engine had pressure circulation lubrication with a gear pump and speed-dependent additional lubrication . A Zenith flat-flow carburetor 30 UH provided the mixture . A piston pump that was driven by the camshaft was installed to deliver fuel from the 50-liter tank installed in the rear .

Two slide motors were built that had the same basic data as the W2, but an overhead control shaft for the control slide and the exhaust gas piston. The control shaft as well as the connecting rods for the slide and piston were on roller bearings.

Bodies

Vorster & Stolle only built the chassis, the bodies were supplied by various manufacturers such as Alexis Kellner, Berlin, Eugen Rupflin Jr., Munich, or Neuer & Thieme, Ulm. Touring cars , convertibles , roadsters and limousines have survived.

swell

Erik Eckermann: Munich quality automobile: the Stolle-Wagen, in: Automobil und Motorrad Chronik, issue 10/1978, pp. 24-27 and 34.