2¾ h.p. T.T. Model : 65 x 100 mm.; overhead m.o.i.v.; Bosch magneto; B. and B. carburetter; belt; Hutchinson tyres.
Hobart Bird and Co., Ltd., Coventry.
The 2¾ h.p. T.T. machine is quite a new model. The engine is fitted with very accessible overhead valves having adjustable tappet rods and very strong rockers. The tank is of the torpedo shape, and lubrication by automatic drip-feed. This machine is said to be capable of 50 m.p.h.
The popular ladies' model 2½ h.p. has a new frame in which the engine is fitted vertically instead of being inclined as before. The engine is improved in detail and is slightly larger (300 c.c.) than before (292 c.c). The three-speed is a Sturmey-Archer. All controls, including the magneto (an enclosed Bosch), are on the handle-bar.
3½ h.p. Model: J.A.P., 85.5x85 mm. (488cc); overhead valve; Bosch magneto; B. and B. carburetter; belt; Hutchinson tyres.
The motive power of the 3½ h.p. model is an improved J.A.P. engine with over-head inlet valve. The Villiers F.E. hub is standard on this machine. A front wheel stand is fitted, and the carrier is provided with pannier plates to carry the toolbags. Large glass-topped filler caps take the place of gauges. By loosening two screws the back mudguard can be turned back to facilitate tyre repairs.
4 h.p. Model: Twin Hobart engine, 68 x 76 mm.; Bosch magneto: B. and B. carburetter; belt; Hutchinson tyres.
The sidecar machine, a 4 h.p. twin, has been brought quite up-to-date and the size of the valves and exhaust pipes increased. The fittings are the same as in the other models. An Armstrong side-car gear is standard (this gear starts with the back wheel on the ground). The petrol consumption is said to be quite moderate.
N.B. The 4hp model is a 552cc sidevalve twin.