An often asked question at rallies is 'what would these engines be able to drive?'. Here is a good answer of what and how many from the 1929 Ronaldson-Tippett Catalogue. http://www.oldengine.org/members/pml/austreg/rt_1929/rtpowerlist.jpg Patrick M Livingstone 0418 692013 Earlwood NSW http://www.oldengine.org/members/pml/Index.html