The Sultans of Sprint Challenge is an acceleration & style contest opened to sprint/custom bikes powered by 4 stroke air cooled twin cylinder engine.
The ranking will be based on performance & style of the contenders.
From the mind fervent Sebastien Lorentz (who is not there I’m not even explain) was born as an idea for who he is sick of speed and to find ways to challenge himself and others.
The technical rules are simple: ….
the Sultans of Sprint challenge is opened to custom sprint bikes powered by a 4 stroke air or oil cooled 2 cylinders engine. As we want to keep the challenge fair & open to all speedfreaks we have some engine capacity limits according to engine type (2 or 4 valves) and use of supercharging (NOS, turbo, blower).
max 1400cc / 2 valves without NOS/blower/turbo
max 1200cc / 2 valves with NOS or blower or turbo
max 1000cc / 2 valves with NOS and blower or turbo
max 1000cc / 4 valves without NOS/blower/turbo
max 900cc / 4 valves with NOS or blower or turbo
max 800cc / 4 valves with NOS and blower or turbo
Frame: original or modified original frame / extended swingarm: maximum 20 % compared to original (some exception can be allowed if the bike fits the spirit).
Rear tire: maximum width: 160mm
Number plate: oval 28,1 x 23,7 cm (plates or painted on the fairing)
Mandatory brake system on both wheels
Usual safety locking wires on oil drain plugs
Full leather suit (one or two pieces) & ECE full face helmet + boots & gloves.
Many bikes (cheap or expensive !) can be used to be part of it as soon as it’s fast enough and built in a custom / sprint style. Some examples: BMW 2 valves boxer, BMW 4 valves boxer (850/900), Ducati air cooled, Suzuki Intruder (anyone ?), Yamaha (see the fast TR1 by Schlachtwerk !), Moto Guzzi, Harley-Davidson big twin & sportster, Buell, Triumph twin Hinckley or Meriden, BSA, Dniepr, Ural ….