Offered from the estate of the late Clifford Jones,1991 Spondon Yamaha TZ250B Racing Motorcycle
Lot 409
Offered from the estate of the late Clifford Jones,1991 Spondon Yamaha TZ250B Racing Motorcycle
Sold for £5,175 (US$ 6,552) inc. premium

Lot Details
Offered from the estate of the late Clifford Jones,1991 Spondon Yamaha TZ250B Racing Motorcycle Offered from the estate of the late Clifford Jones,1991 Spondon Yamaha TZ250B Racing Motorcycle Offered from the estate of the late Clifford Jones,1991 Spondon Yamaha TZ250B Racing Motorcycle Offered from the estate of the late Clifford Jones,1991 Spondon Yamaha TZ250B Racing Motorcycle Offered from the estate of the late Clifford Jones,1991 Spondon Yamaha TZ250B Racing Motorcycle
Offered from the estate of the late Clifford Jones
1991 Spondon Yamaha TZ250B Racing Motorcycle
The mainstay of 250cc class racing at national and international level for many years, the twin-cylinder two-stroke Yamaha well deserved the title of 'privateer's friend'. Following its successful adoption for the 1972 works twins, water cooling first appeared on Yamaha's over-the-counter racers with the introduction of the TZ range in 1973. Power output remained the same as that of the preceding air-cooled TD/TR models, but reliability was much improved. Over the succeeding decade the TZ engine was updated with reed-valve induction, exhaust power valves, separate cylinders and a backwards-rotating crankshaft, but the layout always remained that of a parallel twin. On the chassis side, discs replaced the original drum brakes, a 'lowboy' frame was introduced and an aluminium-alloy swinging arm adopted. One of the most significant developments was the adoption of crankcase-reed induction in 1985, which was immediately followed by a totally new 'Delta-box' aluminium alloy chassis; then in 1988 the cylinders were reversed on the TZ250U and a side-loading cassette gearbox introduced. The TZ250W of 1989 represented a further, though relatively minor, revision of this new design.

Despite these advances, by this time the writing was on the wall for the traditional TZ engine and in 1991 Yamaha fell into step with rivals Honda and Aprilia by introducing a v-twin on the TZ250B (the TZ had been around for so long that Yamaha had all but exhausted the alphabet and been forced to start again at 'A' in 1990). In its new form the TZ continued on into the 1990s.

With the 250cc class now defunct at World championship level, these purpose-built Grand Prix racers are becoming increasingly collectible and this Spondon-framed TZ250B represents a wonderful opportunity to acquire one. Unfortunately, nothing is known of the history of this machine; however, the fairing carries a 'Beezumph 21' noise test sticker dated 20/21 July 2012, which is almost certainly when it was last ridden. There are also stickers for two other 2012 meetings: Auto 66 and Festival of 1000 Bikes. A box of spares is included in the sale, as is the rear-wheel paddock stand. There are no documents with this Lot.
Activities
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  1. Ben Walker
    Specialist - Motorcycles
    Bonhams
    Work
    Unit 1, Sovereign Park
    London, United Kingdom NW10 7QP
    Work +44 20 8963 2819
    FaxFax: +44 20 8963 2801
  2. James Stensel
    Specialist - Motorcycles
    Bonhams
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    Unit 1, Sovereign Park
    London, United Kingdom NW10 7QP
    Work +44 20 8963 2818
    FaxFax: +44 20 8963 2801
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