Junak B20 (1960-65) vs GIMA Gima 125-3 and 125-3SA (1950-51) vs GIMA Gima 175-4 CR and 175 SA (1949-55) vs Velocette Valiant (1957-64)
Comparison technical specifications
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| Make: | Junak | GIMA | GIMA | Velocette |
| Model: | B20 | Gima 125-3 and 125-3SA | Gima 175-4 CR and 175 SA | Valiant |
| Years: | 1960-65 | 1950-51 | 1949-55 | 1957-64 |
| Engine: | Four stroke, single cylinder, OHV | AMC engine, four stroke, single cylinder | AMC engine, four stroke, single cylinder | Four stroke, flat twin cylinder |
| Capacity: | 349 cc / 21.3 cub. in. | 125 cc / 7.6 cu in | 175 cc / 10.7 cu in | 192 cc / 11.7 cub in |
| Bore x Stroke: | 75 x 79 mm | 48 x 69 mm | 56 x 69 mm | 50 x 49 mm |
| Starting: | Kick-start | Kick | Kick | Kick start |
| Max Power: | 14 kW / 19 hp @ 6000 rpm | 4.3 kW / 5.8 hp | 6.3 kW / 8.5 hp | 8.8 kW / 12 hp @ 6000 rpm (from 1958 @ 7000 rpm) |
| Transmission: | Four-speed constant-mesh | 3 Speed | 4 Speed | 4 Speed constant mesh |
| Final Drive: | Chain | Chain | Chain | Shaft |
| Front Suspension: | Fork with coil springs telescopic shock absorbers | Telescopic forks | Telescopic forks | Telescopic fork |
| Rear Suspension: | Independent rear wheel suspension on single wishbone , cooperating with 7- leaf spring positioned transversely; | Plunger, saddle springs | Plunger, saddle springs | Woodhead-Monroe springs with hydraulic damping |
| Front Brakes: | Full hub width, of expander shoe type, hand operated | Drum, ∅150 mm | Drum | 5 x 1" drum |
| Rear Brakes: | Full hub width, of expander shoe type, foot operated | Drum, ∅150 mm | Drum | 5 x 1" drum |
| Wheels: | Wire type, with full width hubs made of light alloy, interchangeable (also with side-car wheel). Both wheels with quick-detachable spindles | Steel, laced wire spokes | Steel, laced wire spokes | Spoked |