Courier Model D

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Courier
Courier Model D 5-Passenger Phaeton (1922)
Courier Model D 5-Passenger Phaeton (1922)
Model D
Production period: 1922-1923
Class : Middle class
Body versions : Roadster , touring car , Phaeton , sedan , coupé
Engines: Otto engine :
3.2 liters
(33.6 kW)
Length:
Width:
Height:
Wheelbase : 2921 mm
Empty weight : 1275 kg
Previous model Maibohm Model B-6

The Courier Model D was a US mid-range passenger car offered only for the 1923 model year . The manufacturer was the Courier Motors Company in Sandusky ( Ohio ).

Model history

The company was founded in 1922 as Arrows Corporation by creditors of the Maibohm Motors Company to support them and to secure previous investments. Shortly thereafter, it was reorganized as the Courier Motors Company . The intention did not materialize and the company had to give up after building only 373 cars. There does not seem to be any bankruptcy.

The draft Courier Model D goes to the Maibohm Model B , back, one in 1918 introduced six-cylinder, the same case used six-cylinder engine with another lubrication system. The Courier was produced in the former Maibohm premises and with in-house bodies. The brand slogans were: "A Good, Husky Six" and "The Most Completely and Conveniently Lubricated Car in America" .

The manufacturer of this short-term (1923) built mid-range automobile with a wheelbase of 116 inches (2921 mm) listed nine body variants, all powered by a purchased but proven and powerful six-cylinder engine with a displacement of 3.2 liters and one unusual in this class Dry sump lubrication for the engine and central chassis lubrication for the chassis.

The company planned a large-scale expansion and advertised across the US. A right-hand drive vehicle in Australia also suggests export activities.

technology

The optically and technically very similar Maibohm Model B-6 as a Phaeton with artillery wheels (1920)

Technically, the Courier Model D corresponds to the last version of the Maibohm Model B-6 except for a few details . The differences found include engine lubrication, central chassis lubrication, carburetor, steering and, in some cases, other body variants. The performance is named slightly different from different sources.

As a Phaeton, the Courier Model D weighed 1275 kg.

engine

The water-cooled six - cylinder engine was purchased from Falls . It was a modern engine with a block cast from one piece and removable cylinder head, which was taken over practically unchanged from the predecessor Maibohm Model B-6 and only had a different engine lubrication . It was also used in the Fremont R-6 and the Handley Six-40 .

This up-controlled in-line engine of the type T-8000 or X-9000 (depending on source) with triple bearing crankshaft had 195.581 ci (3205 cc) displacement of 3.13 inch bore and 4.24 inch stroke (79.38 x 107.95 mm ). In the version of the Courier Model D , it develops 45 bhp (34 kW) at 2600 rpm; another source cites 46 bhp (34 kW).

The NACC rating based on the engine bore results in a value of 23.4 HP, which in Great Britain also corresponds to the applicable tax HP (RAC rating). However, this value says little about the actual engine performance. As is typical for the time, cooling was carried out using a thermosiphon . The Tillotson carburettor from the previous year was no longer used to form the mixture ; Instead, the Stromberg carburetors that had already been installed were used again.

Said, better lubrication consisted of the replacement of the then usual and even in Maibohm used splash lubrication with oil pump through a dry sump lubrication , with lubricant under pressure to all bearings with the exception of the piston pin bearing is released.

The manufacturer stated the fuel consumption as 20 MPG (approx. 11.7 L / 100 km); accordingly, the Courier uses one quart (0.95 liters) of oil for 500 miles (approx. 800 km).

Like its predecessor, the vehicle is very likely to have a honeycomb cooler, battery ignition, 6-volt system and gasoline delivery using a vacuum.

Power transmission

The power is transmitted via a dry disc clutch to a conventional, unsynchronized three-speed gearbox with reverse gear that is interlocked with the engine, and via a cardan shaft to the differential in the rear axle. The reduction on the rear axle is 4.66: 1 or, as with the Maibohm 1922, 5.0: 1 , depending on the source .

Chassis and suspension

The wheelbase is unchanged from the previous model at 116 inches (2946 mm). The robust chassis is constructed as a conventional ladder frame . It consists of two cranked longitudinal members and five cross members, of which the second (from the front) supports the engine and transmission and the rearmost carries the fuel tank.

The rigid axles front and rear are typical of the time . In the Maibohm Model B and B-6 up to model year 1921 the rear axle is "free floating", in model year 1922 and in the Courier it is "three-quarter floating ".

A unique selling point in this class is likely to have been the aforementioned central chassis lubrication , which was otherwise only found in significantly more expensive cars of the time, such as the Packard or Pierce-Arrow . The system's lubricating oil tank is attached to the inside of the left main chassis beam between the second and third crossbeams (i.e. a little in front of the driver's seat). Its contents are sufficient for about 3000 miles (about 4800 km) of driving. In contrast to conventional centralized lubrication systems , which are operated with a central pump in their own pipeline system, the Courier's complex lubrication system uses several small pumps that are distributed throughout the system. The manufacturer called the device Automatic Chassis Lubrication . However, it only works when triggered from the dashboard, i.e. semi-automatically. All common points on the chassis and suspension, i.e. bearings, springs, steering connection parts or axles, are lubricated. Such lubrication was undoubtedly progressive in 1923 and saved the holder from having to lubricate with a grease gun and oil can, which was common up until the 1960s.

The vehicle suspension followed the then common principles with semi-elliptic leaf springs at the front and rear. Wooden spoked artillery wheels were fitted at the factory and, according to the illustrations available, were fitted with full-pane covers that were fashionable at the time. These covers are removable and are attached to the wheel using the existing wheel bolts. The wheels have the removable wheel rim introduced with the Maibohm as standard. These wheels are already used for all Maibohm from 1920 . The Courier again had No Skid Cord tires measuring 32 × 4 inches. A textile reinforcement of the carcass was sought with the cord fabric incorporated into the tire . One set of tires lasted 12-15,000 miles (19-24,000 km).

Both service and auxiliary brakes act on the brake drums on the rear axle. Front brakes did not become generally accepted until after 1925.

Unlike in later Maibohm , for which a worm steering is cited, the Courier Model D had a spindle steering .

Bodies

Courier Model D 5-Passenger Brougham (1922).

According to the manufacturer, the bodies were manufactured in-house; the predecessor company Maibohm Motors had come to car production via coach construction and Courier Motors used its systems. A sales brochure advertised Custom built in the Courier shops ("hand-made in the Courier workshops").

This brochure lists no fewer than nine body styles, while the Standard Catalog of American Automobiles 1805–1942 (1996) only lists five. This discrepancy can either mean that models were announced but not built, or, more likely, that these four are just variants. Analogous to the predecessor Maibohm Model B-6, the Sport Roadster could be a modified version of the occupied Roadster, for example with shortened "helmet" fenders (so named because their profile resembles that of an antique helmet) and steps instead of continuous ones Running boards. The Sport Phaeton and Sport would also be seen analogously , with the latter also having a different interior with four instead of five seats. The catalog picture of a Sedan with the same fenders suggests that this procedure was also used here, whereby a high price difference could also be explained by the equipment offered. For Brougham may be noted that this term sometimes for Club Coupe was used. Accordingly, this would have been an upgraded coupé version with five instead of three seats. Special structures are not known.

Furnishing

In addition to the aforementioned lubrication systems for the engine and chassis, the basic equipment included a nickel-plated radiator grille and headlights with dimming device. Open models were fitted with Spanish leather, while closed models were made from a selection of imported fabrics. The customer could choose from five colors.

Model overview

Type Bj. engine W × H
in./ mm
Cubic capacity c.i./cm³		 Power
bhp / kW 1 / min		 wheelbase body List price
US $		 Remarks
Model D
23.4 HP (NACC)		 1923 R6 OHV
Falls 		3⅛ × 4¼
82.55 × 114.3		 195.581
3205		 45 / 33.6 @ 2600 116  in (2,946.4  mm ) Roadster
3 pl.		 000000000001395.00000000001,395
Model D
23.4 HP (NACC)		 1923 R6 ohv
falls		 3⅛ × 4¼
82.55 × 114.3		 195.581
3205		 45 / 33.6 @ 2600 116  in (2,946.4  mm ) Sport Roadster
3 Pl.		 000000000001395.00000000001,395
Model D
23.4 HP (NACC)		 1923 R6 ohv
falls		 3⅛ × 4¼
82.55 × 114.3		 195.581
3205		 45 / 33.6 @ 2600 116  in (2,946.4  mm ) Phaeton
5 pl.		 000000000001395.00000000001,395
Model D
23.4 HP (NACC)		 1923 R6 ohv
falls		 3⅛ × 4¼
82.55 × 114.3		 195.581
3205		 45 / 33.6 @ 2600 116  in (2,946.4  mm ) Sport Phaeton
5 pl.		 000000000001395.00000000001,395
Model D
23.4 HP (NACC)		 1923 R6 ohv
falls		 3⅛ × 4¼
82.55 × 114.3		 195.581
3205		 45 / 33.6 @ 2600 116  in (2,946.4  mm ) Sport
4 pl.		 000000000001395.00000000001,395
Model D
23.4 HP (NACC)		 1923 R6 ohv
falls		 3⅛ × 4¼
82.55 × 114.3		 195.581
3205		 45 / 33.6 @ 2600 116  in (2,946.4  mm ) Coupé
3 pl.		 000000000001395.00000000001,395
Model D
23.4 HP (NACC)		 1923 R6 ohv
falls		 3⅛ × 4¼
82.55 × 114.3		 195.581
3205		 45 / 33.6 @ 2600 116  in (2,946.4  mm ) Brougham
4 pl.		 000000000001395.00000000001,395
Model D
23.4 HP (NACC)		 1923 R6 ohv
falls		 3⅛ × 4¼
82.55 × 114.3		 195.581
3205		 45 / 33.6 @ 2600 116  in (2,946.4  mm ) Sedan
5 pl.		 000000000002295.00000000002,295
Model D
23.4 HP (NACC)		 1923 R6 ohv
falls		 3⅛ × 4¼
82.55 × 114.3		 195.581
3205		 45 / 33.6 @ 2600 116  in (2,946.4  mm ) Special Sedan
5 pl.		 000000000002295.00000000002,295

production

According to the Standard Catalog of American Cars 1805-1942 (1996), 373 vehicles were produced in the 1923 model year. It is likely that production began as early as the 1922 calendar year.

Chassis numbers

As Ford and previously Maibohm also declined Courier on chassis numbers ; the engine number was used for this at the same time. For the Maibohm Model B four-digit number, for the Courier a five- digit number, beginning with number 10150. The badge was attached to the front spring horn (the mounting of the leaf spring on the carrier) of the left chassis side member. The use of this system is remarkable insofar as If with some certainty it should have its own engine numbers and therefore there must be two numbers.

Remarks

  1. ↑ Predecessor formula for SAE-PS . NACC ( National Automobile Chamber of Commerce ) was an association of the automobile industry founded in 1913 and the successor to the ALAM ( Association of Licensed Automobile Manufacturers ), which introduced the first standards in US automobile manufacture in 1903. The inaccurate method for measuring performance was also used by the RAC in Great Britain and was mainly used for allocation to a tax class ( RAC Horsepower ).
  2. ↑ "Free floating" designed axles have a wheel hub that is connected to the outer end of the axle body via a roller bearing . The half-waves are therefore freed from transverse forces. The outer shaft end is in the wheel hub, the torque is usually transmitted by means of a gear coupling .
  3. ↑ To make work easier after a flat tire, only the removable wheel rim and tires were replaced, the hub and wooden spokes remained on the vehicle. Such demountable rims were common in the 1910s and 1920s.
  4. ↑ No precise information. Possibly shortened fenders and steps instead of continuous running boards.
  5. ↑ No precise information. Possibly shortened fenders and steps instead of continuous running boards.
  6. ↑ No precise information. Possibly shortened fenders and steps instead of continuous running boards.

literature

Web links

Individual evidence

  1. ↑ a b c d e f g h i j k l m n o p Kimes, Clark: Standard Catalog of the American Automobile , 1996, p. 383 (Courier)
  2. ↑ American Automobiles: The Maibohm Automobile & The Maibohm Motors Co.
  3. ↑ a b c Kimes, Clark: Standard Catalog of the American Automobile , 1996, pp. 916–917 (Maibohm)
  4. ↑ a b c d e f g h i j k l m n o p q r s t u v w x y Courier Motors Company (ed.): A Good, Husky Six , Courier sales brochure (1923).
  5. ↑ a b c d e f g h i j k carfolio.com: Specifications Courier Model D (1922)
  6. ↑ a b c d e f American Automobiles: The Maibohm Automobile & The Maibohm Motors Co .; Data sheet 1922
  7. ^ Kimes, Clark: Standard Catalog of the American Automobile , 1996, p. 614 (Fremont)
  8. ^ Kimes, Clark: Standard Catalog of the American Automobile , 1996, p. 674 (Handley-Knight)
  9. ↑ a b c d e f g h i j k l m classiccardatabase.com: Standard Specifications 1923 Courier Model D
  10. ↑ NACC: Handbook of Automobiles 1915–1916 , p. 212 (HP Rating)
  11. ↑ classiccardatabase.com: Standard Specifications 1918 Maibohm Model B
  12. ↑ classiccardatabase.com: Standard Specifications 1919 Maibohm Model B-6
  13. ↑ a b classiccardatabase.com: Standard Specifications 1920 Maibohm Model B-6
  14. ↑ a b c classiccardatabase.com: Standard Specifications 1921 Maibohm Model B-6
  15. ↑ a b classiccardatabase.com: Standard Specifications 1922 Maibohm Model B-6
  16. ↑ Burness: American Car Spotter's Guide, 1920-39 (1975), p. 257 (Maibohm).