1702 DT final

Here’s a bit of info on the bike.
The TY stands for “Trials Yamaha”. It was specifically designed
and built to take part in the European Trials championship. At
the time it was marketed as Yamaha’s first slow bike.
It was produced from 1972 to 1981
1968: A standard Yamaha DT250 is entered into the
European Trial Championship in Montbeliard France, ridden by
Swiss Hasler.
1970: Christian Rayer, six times French trials champion
suggests to Jean-Claude Olivier from Yamaha France the idea
of a Trials Yamaha.
1971: Christian Rayer, is contracted by the Japanese to help
develop a prototype Trials Yamaha. This photo shows Christian
in 1971 on a prototype trials he developed using a Yamaha 350
engine.
1972: Christian Rayer receives the first factory built TY 250.
1973: TY250 launched globally as a production Trials
Motorcycle.
1973: Yamaha recruits Mick Andrews, nicknamed ‘Magical
Mike’, 5 times winner of the Scottish Six Days Trial and twice
European champion. Mick Andrews continues the development
of the TY with Japanese engineers for the next 6 years. This
photo shows Mick Andrews riding a TY250 in Japan.
1981: Yamaha TY250 Twin Shock is discontinued and
replaced by the TY250 Monoshock. This photo shows the 1983
TY250 Monoshock.
The basic TY250 Specs
· 246cc Single cylinder 2 stroke, 17hp
· Weight 85kg in Trials version. 93kg in street version.
· 5 speed gearbox with ratios specially selected for trails
competition by ‘Magical Mike’
· Max speed 110km/h with street reduction of 53/17 on the
sprockets. Trials reduction was 53/12.
· Left rear swing arm houses an oil reservoir with automatic
chain oiler.
· Many parts such as the hubs, brakes, engine covers and fuel
tank are manufactured out of magnesium to reduce weight.
30 DIRT & TRAIL MAGAZINE FEBRUARY 2017