Since I started steamlocomotive.info I've developed a kind of growing fondness for the odder locomotives that existed, were steam powered and occassionally got preserved. Among them are a group of British locomotives whose wheel arrangement is described in the subject of this post. Graham Williams, a frequent contributor to steamlocomotive.info provided the image below:
The boiler is indeed vertical and contained within the area just forward of the cab wall, the narrow barrel where a boiler would be expected is a tank for the locomotive's water, and I'm assuming the mechanism that drives the thing is in the area where a smokebox would traditionally be.
Does anybody have a source of more information about these little Sentinel built critters?
Regards,
Doug