Last year’s lucky draw winner at the Art of Speed festival (AOS 2018) went home with “Twin Boss” a double-engined Yamaha RXZ but for 2018, the prize is a little different, a 600 cc kapchai named Papa Jahat or “Bad Daddy”. Taking a Honda C70 as its basis, this monstrosity was put together by last year’s prize builder, Mohamad Irwann Mohd Azlan, better known as Cheng, from FNG Works of Ipoh.

The 27-year old mechanical engineer was commissioned by the organisers of AOS 2018 to put together Papa Jahat for inclusion as first prize in the festival’s lucky draw. According to Cheng, the project was difficult due to the size of the engine which necessitated butchering the C70’s frame, but still preserving the looks and profile of the donor bike.

A 39 mm PWK Keihin carburettor is mated to the 600 cc four-stroke single-cylinder air-cooled engine with the entire wiring loom replaced . Despite looking that way, Papa Jahat is not lowered but in face, raised a little in front with lengthened leading-link front and 300 mm shock absorbers at the back, along with race shift pattern for the gearbox.

The swingarm was lengthened by 50 mm over stock while the C70 monocoque frame was hacked to install a steel backbone. This then required the fuel tank to be made smaller, giving some 3-litres of capacity, or in the words of the author, “about enough to start the engine, go around the block and get arrested.”

Although the build is not quite yet complete and AOS 2018 is only three weeks away on July 28 and 29 at Malaysian Agro Exposition Park Serdang (MAEPS), Cheng has resolved to finish his work in time. On the final day of AOS, one lucky visitor will get the chance to bring home Papa Jahat, which cost almost RM45,000 to construct.

If anyone is curious, both the author and his colleague, Durrani Shahrom of paultan.org‘s BM section, took Papa Jahat out for a spin around the block. The verdict? Scary fast, easily goes sideways and heaps of fun.