StoneRoad2013's photos with the keyword: side-valve

cls[24] - Military BSA

cls[24] - Military BSA

StoneRoad2013
21 Sep 2024 4 40
BSA M20. 126,000 [approx] of these side-valve 650s saw service in WW2 The saddle was remarkably comfortable. en.wikipedia.org/wiki/BSA_M20
nmbm[23] - contrasts

nmbm[23] - contrasts

StoneRoad2013
30 Jun 2023 1 1 52
That's a 170cc "scooter" on the left, which contrasts with the size of the two flat-tankers to the right. A 1913 example of a Kynock with the JAP side-valve engine developing 4hp, and further to the right, a 1913 Lea Francis V-twin developing 3 1/2 hp.