We’ve got them in all shapes and sizes this week?from a Yamaha SR500 that’s gone electric, to a BMW R nineT built for a surfer. We also take a look at Mr Martini’s latest project, and a pair of vintage flat trackers from the Mecum auction in Las Vegas.

Yamaha SR-E by Deus ex Machina It’s rare for a custom shop to have one of their builds back in for a makeover?and rarer still for the job to include an electric conversion. But that’s the story with this electric-powered Yamaha SR500 custom from Deus ex Machina.
This Yamaha belongs to a long-time friend of Deus, and was the first custom bike to roll out of their original workshop in Camperdown, Sydney. The client recently got in touch with head wrench Jeremy Tagand, and raised the idea of converting it to electric. So Deus stripped out the original motor and got to work.
A call went into the Australian electric motorcycle company, Fonz Moto, to order a custom battery and motor combo that would fit the SR’s small frame. They came back with a 72V 3000W motor, and a 3.3KwH battery. With a new controller in hand too, Deus started piecing the SR back together.
To avoid having to modify the frame too much, Deus used laser cut motor mounts that let them bolt the new bits to the existing engine attachment points. It also made it possible to hook up the new power plant to the original chain drive.

The cockpit was tweaked with a new throttle, and a regenerative braking lever where the clutch ...