1970-1972 Pride of Pay 'n Pak Specifications
General
| Original Owner | Dave Heerensperger (Pay 'n Pak Corporation) | |
| Designer | Ron Jones | |
| Constructor | Ron Jones | |
| Lap Speed | Approx 125 MPH | |
| Maximum Speed | 180 MPH+ | |
| Electrical System | 24V |
Hull Specifications
| Length | 28' 6" | |
| Beam | 12'8" | |
| Weight | 6,000 lbs (Racing Trim) | |
| Material | Wood, Aluminum, Fiberglass |
Engine Specifications (modified for racing)
| Manufacturer | Rolls-Royce/Packard | |
| Model | V-1650-9 (Merlin) V-12 | |
| Displacement | 1,650 cu-in | |
| Bore x Stroke | Bore: 5.4" x Stroke: 6.0" | |
| Compression Ratio | 6.0:1 | |
| Power | Over 3,000 HP | |
| Racing RPM | Approx 3,600-4,000 RPM | |
| Fuel System | Bendix-Stromberg Injection Carburetor w/ADI | |
| Supercharger | Two-stage two-speed with intercooler & ADI tube (no aftercooler), 120-130" Hg Abs Boost | |
| Engine driven supercharger: 12.0" first stage, 10.1" second stage, 6.391:1 low ratio, 8.095:1 high ratio (normally not used) | ||
| Fuel: | 115/145 octane aviation fuel (118+ octane race fuel now used) | |
| ADI | 50/50 water/alcohol anti-detonation injection at boost above 50 in hg (approx 0.5 lb ADI per 1.0 lb fuel) | |
| Lubrication System | Dry sump system w/15 gal tank, engine driven pressure and scavange pumps, gearbox scavange pump | |
| Cooling | Total loss water system, rudder pickup feeds water/oil cooler, block, and shaft logs; seperate rudder pickup for intercooler | |
| Ignition | Dual high tension rotating magnet-type magneto's (one intake, one exhaust), w/provisions for starting booster coils |
Propeller/Gearbox
| Gearbox | Western Gear 2.85:1 ratio gearbox, replaces original Merlin reduction gear | |
| Propeller | 2 blade |