1955 Fairthorpe Atom vs. 1966 Innocenti A 40
To start off, 1966 Innocenti A 40 is newer by 11 year(s). Which means there will be less support and parts availability for 1955 Fairthorpe Atom. In addition, the cost of maintenance, including insurance, on 1955 Fairthorpe Atom would be higher. At 1,098 cc (4 cylinders), 1966 Innocenti A 40 is equipped with a bigger engine. In terms of performance, 1966 Innocenti A 40 (43 HP @ 5100 RPM) has 8 more horse power than 1955 Fairthorpe Atom. (35 HP @ 5700 RPM) In normal driving conditions, 1966 Innocenti A 40 should accelerate faster than 1955 Fairthorpe Atom. With that said, vehicle weight also plays an important factor in acceleration. 1966 Innocenti A 40 weights approximately 369 kg more than 1955 Fairthorpe Atom. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1966 Innocenti A 40 (81 Nm @ 2500 RPM) has 32 more torque (in Nm) than 1955 Fairthorpe Atom. (49 Nm @ 3750 RPM). This means 1966 Innocenti A 40 will have an easier job in driving up hills or pulling heavy equipment than 1955 Fairthorpe Atom.
Compare all specifications:
| 1955 Fairthorpe Atom | 1966 Innocenti A 40 | |
| Make | Fairthorpe | Innocenti |
| Model | Atom | A 40 |
| Year Released | 1955 | 1966 |
| Engine Position | Rear | Front |
| Engine Size | 646 cc | 1098 cc |
| Engine Cylinders | 2 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 35 HP | 43 HP |
| Engine RPM | 5700 RPM | 5100 RPM |
| Torque | 49 Nm | 81 Nm |
| Torque RPM | 3750 RPM | 2500 RPM |
| Engine Compression Ratio | 6.5:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Vehicle Weight | 431 kg | 800 kg |
| Vehicle Length | 3660 mm | 3720 mm |
| Vehicle Width | 1530 mm | 1520 mm |
| Vehicle Height | 1380 mm | 1450 mm |
| Wheelbase Size | 2270 mm | 2220 mm |
