X-3, X-4: (From Condie and other books) Note angled down exhaust pipe, proto-type air washer, no 1-gallon gas starting tank, early gas Holley 234 manifold, cast spoke front wheels, squarish Holley 295 type float, 16 cleat rear wheels, smaller pulley plate
Only known 'square' hip roof contoured, valve spring cover. Also note magneto plug on right side! (only one in the world!) Note cast iron throttle control rod support. Shows commutator 'spring' different from any production models.
Dash with prototype quadrant. Note sheet metal extension for hinges on bottom side of gas tank. Notice the prototype hip-roofed tool box.
Two-piece steering rod
X-11, X-12: (Popular Mechanics, 1917) Near to a MOM, except has the prototype Holley 234.
X-13, X-14 (15)?: (The Trac Record, J/F 1978) Lord Northcliffe and Henry Ford plowing with last of X-series just prior to production, about October 1, 1917.
Mix-up of earlier uni-frame with worm on top, and 'Ford' tractor with X-body, from Dykes, 10th edition 'Ford Supplement'. Note the lower drawings are identical to the previous one in 'Real Fordson, part 1'.
X-5, X-6: (Clymer, page 291) Note 16 cleats, 'blank' fuel tank, tall stem distributor, early air washer, side-mounted choke rod, etc.
X-5, X-6: (Ford Trucks Since 1905) Note the actual working model experimented with the front cast wheels and wide rears with oversize cleats. However, these rears still didn't solve the problem of mud buildup, only aggravated it.
X-7, X-8: (picture from early magazine, property of Tom Brent of Canada) Note unusual manifold-carb system tall-stem hookup, prototype air washer, 1st X-series with a pulley shown, hinge points for louvers.
Only 'rear' oil filter in the Western Hemisphere. Note early air washer prototype.
Overhang on gas tank for hinges and side louvers, also note unusual sediment bowl.
Early air washer and gas starting tank prototypes.