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Velocette K series 1925 - 31

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Make Model

Velocette KTP, KTS Mk I and KTS Mk II

Year

KTP:          1930 - 31

KTS Mk I:  1931 - 35

KTS Mk II: 1936 - 40

Engine

Four stroke, single cylinder, OHC

Capacity

348.4 cc / 21.3 cub in

Bore x Stroke

74 x 81 mm

Compression Ratio 6.5:1
Cooling System Air cooled
Lubrication Dry sump
Carburetor Amal, twist grip control

Exhaust

1-into-2, chrome plated silencers with fish tail mufflers

Ignition 

Coil in conjunction with Miller
Starting Kick start

Clutch

Wet multi-plate

Transmission 

KTP: 3 Speed, hand operated

KTS: 4 Speed, foot operated

Final Drive Chain

Gear Ratios

KTP: 1st 14.5 / 2nd 8.1 / 3rd 5.6:1

Frame

KTP, KTS Mk I: Open frame with load bearing motor to form part of the frame

KTS MkII: Single cradle frame

Wheelbase

1365 mm / 53.75 in
Seat height 711 mm / 28 in
Ground Clearance 121 mm / 4.75 in

Front Suspension

Webb fork with two friction dampers

Rear Suspension

Spring loaded seat

Front Brakes

7 in diameter drum, internal expanding

Rear Brakes

7 in diameter drum, internal expanding
Wheels Spoked

Fuel Capacity

8.5 L / 2.25 US gal

Dry Weight

133 kg / 294 lbs

Colours Black with gold pin striping
Source Wikipedia

KTP: The KN was in 1930 replaced by the KTP (Twinport). This was a sport bike with two exhaust ports and thus two outlets, but it was not successful. The double gates yielded a lack of power and the ignition coil was unreliable and therefore disappeared within a year. The KTP had the fish tail muffler, which at that time was modern.

KTS Mk I: The successor to the KTP was the Velocette KTS Mk I, which continued until 1935. Remarkably enough this machine was again fitted with an oval silencer. The machine had leg shields and wide fenders and was thus positioned more as a touring model.

KTS Mk II was produced from 1936 until 1940,