This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This 1966 Norton Atlas 750 was purchased by the seller 6 years ago. It has been heavily modified to match his vision of a reliable British bike with the looks and stance of a Café racer, but wrapped in raw metal, unpolished surfaces, and natural oxidization to make the result feel vintage. The build was completed two and a half years ago by the seller, who describes the bike as best enjoyed on café runs using twisty B-roads. This unique Norton is now offered with a clean Ontario title.
The build included a full tear down followed by a blasting and powder coating of the frame. It incorporates a long list of upgraded parts and yet delivers a bike that looks like it has not been rebuilt at all, with plenty of tarnish and patina.
The cosmetic touches include a custom seat pan and oil tank, LED tail light, Sprint aluminum fuel tank, and Akront alloy rims with a high flange in the rear and a low flange up front. The front drum brake is from a Suzuki GT750 4LS that has been modified to bolt right up to the Norton Roadholder forks, which have alloy internals. The Race Tech springs provide a sporty spring rate.
Instrumentation consists of a Trail Tech digital-dash for revs and speed, while the custom-fused wiring harness is negative-grounded and draws from a 12V dry cell battery. The motocross-style bars are attached to a Seeley upper triple clamp with ProTaper bar clamps.
The counter shaft sprocket was increased by 2 teeth to give the bike more legs, though the seller notes that it is not well suited for highway cruising.
The non-original 750cc engine was rebuilt by the seller and run-in on a dyno to get the set-up and jetting on the single Mikuni carb tuned correctly. The seller notes no major mechanical needs, though the transmission seal is weeping. Additional powertrain modifications include:
- Norton works racing cam
- Superblend bearings and Black Diamond valves
- Steve Maney 2-into-1 race exhaust
- Belt drive primary with a custom stand-off for high output stator
- Electronic ignition
- Spin-on oil filter
The bike has been ridden just 1000km since the rebuild, and the engine is reported to run crisply and start easily with one or two kicks.