{{Short description|British motorcycle manufactured by Phelon & Moore}} {{Use dmy dates|date=December 2016}} {{Use British English|date=December 2016}} {{Infobox Motorcycle | name = | image = Panther 100 600 cc 1936.jpg | image_size = 250px | aka = | manufacturer = [[Phelon & Moore]] | parent_company = | production = 1932 to 1963 | predecessor = Model 60 | successor = [[Panther Model 120|Model 120]] | class = | engine = {{cvt|598|cc}} air cooled, single cylinder, overhead valve, pushrod four stroke | bore_stroke = {{cvt|87|×|100|mm}} | top_speed = 70mph (113 km/h) | power = {{convert|23|bhp|abbr=on}} at 5,300 rpm | torque = | transmission = Four speed. Multi-plate clutch in oil | suspension = | brakes = 8in. front drum, 7in. rear drum | tires = Front tyre 3.25 × 19in., Rear tyre 3.50 × 19in. | rake_trail = | wheelbase = {{convert|54|in|mm}} | length = {{convert|83|in|mm}} | width = | height = | seat_height = {{convert|28|in|mm}} | dry_weight = {{convert|425|lb|kg}} | wet_weight = | fuel_capacity = | oil_capacity = | fuel_consumption = | turning_radius = | climbing_ability = | related = | similar = }}
The '''Panther Model 100''' is a British [[motorcycle]]. It has a 598 cc, 6.5:1 compression ratio, {{convert|87|x|100|mm|2|abbr=on}}, OHV sloper engine in a frame where the engine forms the front down-tube. [[Phelon & Moore]] made motorcycles in [[Cleckheaton]], [[Yorkshire]], from 1904 to 1967, and branded them "Panther" from the 1920s onward.<ref>{{cite web |title=The Panther Page |url= https://www.pantherownersclub.com/PantherPage/ |publisher=Panther Owners Club |access-date=4 May 2008}}</ref> Launched in 1932, the '''Model 100''' was made until 1963. While the engine and overall layout stayed essentially the same, the specifications evolved over these three decades.<ref name="BMJ">{{cite book |last=Jones |first=Barry M |year=1999 |title=The Panther Story |place= |publisher=Panther Publishing Ltd |isbn=095350980X}}{{page needed|date=January 2026}}</ref>
==Development== [[File:1937M100.jpg|left|thumb|1937 Panther Model 100]] A 598cc engine was used in the Model 85 Redwing (previously Model 80) from 1929 to 1930, and the Model 60 (previously Model 3) from 1928 to 1935. The Model 100 engine was largely a development from the Model 60. The earlier engines had compression ratios of either 5.4:1 (Model 60 pre-1930) or 7.0:1 (Model 85 and Model 60 post-1929). The frame is derived from the 1928 Panther and the tank from the 1932 Model 50. The history of the development of the Model 100 is as follows.<ref name="BMJ"/>
'''1932''' - Model 100 launched. P&M 4-speed gearbox, Webb forks.
'''1933''' - [[Sturmey-Archer]] 4-speed, hand-change gearbox introduced. Frame redesigned. Terry de luxe saddle.
'''1934''' - [[Burman and Sons Ltd|Burman]] 4-speed foot-change gearbox introduced [[File:1935M100.jpg|thumb|1935 Panther Model 100]] '''1935''' - Deeply finned sump and improved lubrication. This new bottom end remained almost unchanged for the next thirty years. This machine had a 6.5:1 compression ratio, {{convert|87|x|100|mm|2|abbr=on}}, ohv sloper engine.<ref name="BMJ"/> The 1935 Model 100 was the machine on which Miss [[Florence Blenkiron]] and Miss [[Theresa Wallach]] undertook the epic journey from London to Cape Town, crossing the Sahara: the first such journey on a motorcycle combination.<ref>{{cite book |last=Wallach |first=Theresa |year=2001 |title=The Rugged Road |place= |publisher=Panther Publishing Ltd |isbn=0-9535098-2-6 |page=}} Introduction and biography by Barry M Jones{{page needed|date=January 2026}}</ref>
'''1937''' - New fully chromed fuel tank with red and black lined cream panels and snarling Panther logo. This was the last year of the "Redwing" Model 100<ref name="BMJ"/>
'''1938''' - Kidney-shaped rocker cover introduced. Redwing designation dropped
'''1939''' - Miller Dynamag replaces [[British Thomson-Houston|BTH]] magneto. 3.5 gallon tank introduced
'''1940''' - Production ceased for [[World War II]]
'''1946''' - Production resumed after war. Lucas magneto introduced.
'''1947''' - Dowty Oleomatic forks introduced
'''1950''' - Manual advance/retard reintroduced
'''1952''' - Lucas Magdyno introduced
'''1954''' - Swinging arm Model 100 introduced. Four gallon tank. Panther forks.
'''1955''' - [[Amal (carburettor)|Amal]] 376 introduced
'''1956''' - Amal 389 introduced. Heavy duty, sidecar trail. Panther forks.
'''1957''' - Swinging arm Model 100 de luxe introduced. Last year of rigid Model 100. Dualseat as standard.
'''1963''' - Model 100 last manufactured. It was the end of the line for 600 cc four stroke heavyweights. The 650 cc Model 120 continued for another three years
[[File:Panther Logo Snarl.jpg|right|Snarling Panther logo]] [[File:Panther M100.jpg|thumb|1961 Panther Model 100]]
==Sources== {{reflist}}
==See also== *[[List of motorcycles of the 1930s]] *[[List of motorcycles of the 1940s]] *[[List of motorcycles of the 1950s]]
==External links== *[http://www.pantherownersclub.com/PantherPage/p-m-hw-m100.html Panther Model 100 at The Panther Page] *[http://www.pantherownersclub.com/PantherPage/p-ts-m100.html PANTHER Model: 598cc, 100. Technical Specs]
[[Category:Panther motorcycles|Model 100]] [[Category:Single-cylinder motorcycles]] [[Category:Motorcycles introduced in the 1930s]]