NSU consul

NSU
consul
Manufacturer	NSU works
Production period	1951 to 1954
class	motorcycle
Motor data
1-cylinder four-stroke
349 cm 3 with 13.2 kW (18 PS) , 110 km / h 498 cm 3 of 16.2 kW (22 hp) , 125 km / h
transmission	4 courses
drive	Chain drive
Brakes	Inner jaws
Wheelbase  (mm)	1414

Engine and transmission of the consul;
on the left above the kick starter is the oil reservoir for the dry sump lubrication

Rear suspension with adjustable telescopic suspension

NSU Consul motorcycle 351 OS-T with sidecar Steib S350

The NSU Konsul (351 OS-T and 501 OS-T) is a motorcycle that the NSU works , Neckarsulm , built in versions I and II with a 349³ or 498 cm³ engine at the beginning of the 1950s. It was the last NSU model in this displacement class. 14,213 pieces were produced in total.

Engine and power transmission

The Konsul's single-cylinder four-stroke engine largely corresponds to the engines of the pre-war models 351 OSL and 501 OSL. It has diagonally opposite overhead valves in a light-metal cylinder head, the underlying two camshafts drag lever , bumpers and rocker arms are operated. Similar to the Horex Regina, the bumpers move in a common protective tube, which gives the impression of an engine with a vertical shaft and an overhead camshaft . The Konsul has a double port exhaust, which means that the outlet forks in the cylinder head and ends in two exhaust pipes and pots. To the right of the rear wheel is the oil tank for the dry sump lubrication , which externally corresponds to the tool container on the opposite side. The consul has a Noris alternator that is driven by a chain. Unlike the pre-war models of the OSL series, the ignition timing is automatically adjusted by centrifugal force depending on the engine speed .

The engine and four-speed gearbox are arranged separately in a classic design and connected by a large aluminum chain case. The chain case encapsulates the duplex primary chain and the coupling. As in the past with English motorcycles, shifting is done with the right foot and first gear up. To upshift into the other gears, the gear lever is pushed down. Different gear ratios were available for solo or sidecar operation. A fully encapsulated single roller chain on the left side transfers the power to the rear wheel.

Frame and chassis

The NSU Konsul has a closed tubular bridge frame, telescopic fork with hydraulic damping and a likewise hydraulically damped telescopic straight path suspension on the rear wheel. A special feature of the rear suspension at that time was the "preload" with which it can be adapted to operation with a driver or a pillion passenger. The saddle is a swinging saddle with tension springs.

The motorcycle is largely enamelled in black and has decorative lines; the side parts of the tank, exhaust pipes and silencers as well as the handlebar are chrome-plated.

Technical specifications

NSU consul	351 OS-T	501 OS-T
Sales description	Consul I.	Consul II
construction time	1951-1953	1951-1954
engine	Single cylinder four stroke
control	hanging valves
Displacement	349 cc	498 cc
Bore × stroke	75 mm × 79 mm	80 mm × 99 mm
Compression ratio	6.3: 1
power	18 hp (13.2 kW) at 5500 rpm	22 hp (16.2 kW) at 5000 rpm
Carburetor	Bing 2/26/13	Bing 2/27/1
Lubrication system	Dry sump with gear pump
transmission	4-speed (with foot switch)
frame	closed bridge frame
suspension	Telescopic fork and straight travel rear suspension, hydraulic damping
Brakes	Inner shoe brakes, Ø 180 mm
wheelbase	1414 mm
tires	3.50–19 (with sidecar at the rear 4.00–19)
tank	14.5 liters
Empty weight	190 kg	195 kg
Top speed	approx. 110 km / h	approx. 125 km / h
price	2290.00 DM	2,450.00 DM
number of pieces	8247	5966

Note: Specifications vary slightly depending on the source.

NSU consul for sports activities

For use in motorsport, NSU supplied an enhanced version of the Konsul II. The engine had only one exhaust duct (so-called single port system), exposed hairpin valve springs , larger valves, a modified camshaft and a larger carburetor. The power was 33 hp (24.3 kW).

See also

• German two-wheeler and NSU museum
• NSU engine works

Web links

Commons : NSU Konsul  - collection of images

Individual evidence

1. ↑ ^{a b c d} Peter Schneider: NSU 1873–1984 • From the high-bike to the automobile . 2nd Edition. Motorbuch Verlag, Stuttgart 1988, ISBN 3-613-01086-0 .
2. ↑ http://www.nsu-konsul.de/media/datenblaetter/Konsul_Ersatzteilliste.pdf
3. ↑ ^{a b c} brochure Better drive on NSU. Ext. 1068 200 101 29.
4. ↑ Catalog 100 Motorcycles . Verlag für Handel und Wirtschaft, Müller & Co., Munich 1952
5. ^ NSU website by Th. Baumgartner, accessed on June 20, 2011
6. ↑ NSU Konsul website, accessed on June 20, 2011 ( Memento of the original from October 24, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.