The figures 95 and 105 indicate the top speed of this car in miles per hour (144/152 km/hour). The B95 and B105 had 4-stroke 692cc Royal Enfield 'Constellation' parallel twin engines and, since the B105 had 50bhp in a car which weighed less than 800lb, it achieved some competition success.
Further information submitted:
These cars do need TLC. Slack worn neglected chains will cause transmission snatch. This may shear the Woodruff keys in the taper fit drive shafts. If the tapers are lapped to a mirror finish so that they grip properly one may find that the wheel hub splines shear instead. Another Achilles heel needing attention is the rubber ring on the feed bolt that supplies the big end bearings. The main bearings are ball and roller lubricated by splash, hence cannot be used to feed oil to the big ends. If the rubber ring splits the big ends can (will) seize. Good points are that the car was extremely rapid for its day. The Enfield piston-type oil pumps do however have a drooping characteristic unlike gear pumps hence over-tuning of the engine is not a good idea.