2¼ h.p. Lightweight, 3 h.p., 3½ h.p., and 4¼ h.p. Models: 70x72, 79 x 82. 85x88, and 89x96 mm.; side by side m.o.v.; B. and B. carburetter; two-speed counter-shaft; belt and chain.
J. Kirby, Broadgate, Lincoln.
The four models specified above are all single-cylinder machines, the lightweight being the only model to which the two-speed gear, mentioned in our issue of the 21st inst. (page 1329), is not fitted. This counter-shaft is a remarkably compact design; it is driven from the engine by a chain, protected by a neat sheet aluminium cover, and on the high gear drives through a belt on the left side of the chain, on the low gear through a chain on the other side of the wheel. High and low gears are each fitted with a separate clutch, which is simplicity itself, consisting merely of a split bronze ring of good bearing surface, contracted by the operation of a side cam so as to grip tightly and transmit the power.
As the diameters of these rings are considerably less than four inches, the clutches are very compact, and the side cams are worked by a single lever carried up the side of the tank.
A feature in the 4¼ h.p. model is the stay brought down from a point on the seat-pillar below the tank to the bridge joining the lower back wheel stays. A coachbuilt sidecar is shown in conjunction with the 3½ h.p. Lincoln-Elk, while a 4¼ h.p. machine is fitted with a new sidecar made by Bey, of Hampstead.
In this model the sidecar wheel is practically given a separate spring suspension, working as it does on the end of a lever pivoted to the sidecar axle and controlled by strong helical springs. The design is quite new, but we have not tried it.
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