Model 10G - Delivery Van - 61ci V-twin, two speed rear hub, magneto ignition, 8.68 HP.Model 10F - 61ci V-twin, chain drive, two speed rear hub, magneto ignition, 8.68 HP.Model 10E - 61ci V-twin, chain drive, magneto ignition, 8.68 HP.Model 10C - 35ci F-head single-cylinder, chain drive, two speed rear hug, magneto ignition, 4.34 HP, motor numbers followed by DG or D.Model 10B - 35ci F-fead single-cylinder, chain drive, 4.34 HP, motor numbers followed by DG or D, single speed.Model 10A - 35ci F-head single-cylinder, belt drive, magneto ignition, 4.34 HP, motor numbers followed by CF.Pistons, rods, and flywheels balanced as individual unit Model G commercial delivery van model offered Starting by pedaling or running alongside Pistons, rods, and flywheels balanced as a unit Model 9G - Forecar Delivery Van - 61ci F-head V-twin, front mounted delivery box.Įngine: 35ci F-Head single (called the "5-35" because it put out 5hp from it's 35ci) with 3-5/16x4in bore and stroke.Model 9F - 61ci F-head V-twin, chain drive.Model 9E - 61ci V-twin, chain drive, magneto ignition, 8.68 HP.Model 9B - 35ci F-head single, chain drive, magneto ignition, 4.34 HP, motor numbers followed by D.Model 9A - 35ci F-head single, belt drive, magneto ignition, motor numbers followed by C.Horizontal top frame rail sloping to the rear Vertical-radial pattern cooling fins on cylinder heads Timed breather system using a slotted breather gearĬonnecting rods with roller-bearing big endsīall-bearing mainshaft with self-aligning bearings on sprocket side Tank-mounted hand-operated oil pump as main lubricationĮngine: 61ci F-Head V-twin with mechanical inlet valve and 3-5/16x3-1/2in bore and stroke Troxel saddle suspension system with Tru-form padded Ful-Floteing saddle and spring-adjustable center post.įront-fender rear section designed with a slight valanceįree-wheel cluth assembly in rear axle hub on models with "X" prefix operated by handle on gas tank Pedal cranks mounted on a hub having eccentric end pieces holding hub into frame New frame with a horizontal top frame rail sloping to the rear Production: 3,852 (detail figures not available) Model X8E - 61ci F-head V-twin, chain final drive, magneto ignition, rear wheel clutch, 7 to 8 HP, motor numbers followed by E.Model X8D - 50ci F-head V-twin single-belt drive, magneto ignition, rear wheel clutch, 6.5 HP, motor numbers followed by D.Model 8D - 50ci F-head V-twin, single-belt drive, magneto ignition, 6.5 HP, motor numbers followed by D.Model X8A - 30ci F-head single, single-belt drive, magneto ignition, rear wheel clutch, 4.34 HP, motor numbers followed by AB, BA or B.Model 8A - 30ci F-head single, single-belt drive, magneto ignition, 4.34 HP, motor numbers followed by AB, BA or B.Model X8 - 30ci F-head single, single-belt drive, battery ignition, rear wheel clutch, 4.34 HP, motor numbers followed by AB, BA or B.Model 8 - 30ci F-head single, single-belt drive, battery ignition, 4.34 HP, motor numbers followed by AB, BA or B.Things got really complicated with both chain and belt drive being offered and a clutching mechanism designated by an "X" all wheels were the 28-inch variety.Production: 5,625 (detail figures not available)įull-baffle with three 3/8" holes in each side under front cylinder and half-baffle under rear cylinderĦ0deg seats on both intake and exhaust valves Model 7D - 50ci F-head v-twin, 28" wheels, magneto ignition.Model 7C - 30ci F-head single, 26" wheels, magneto ignition.Model 7B - 30ci F-head single, 26" wheels, battery ignition.Model 7A - 30ci F-head single, 28" wheels, magneto ignition.Model 7 - 30ci F-head single, 28" wheels, battery ignition.H-D bar-and-shield logo with word "Trademark" Model 6E - Factory Stock Racer, 30ci F-head single.Model 6C - 30ci F-Head single with 26" wheels, magneto ignition.Model 6B - 30ci F-Head single with 26" wheels, battery ignition.Model 6A - 30ci F-Head single with 28" wheels, magneto ignition.Model 6 - 30ci F-Head single with 28" wheels, battery ignition.This list is unofficial and is not gospel, only what I have been able to cross in various manuals, web sites and dealerships. Harley Davidson ® VIN Identification Guide