1978 Honda CB750K Quorra

Quorra has been 2 years in the making up to this point, and she’s been a reawakening of a passion that has been dormant since I put the wrenches down for the better part of a decade now. I always loved the light cycles from Tron and I am not sure who would deny that Olivia Wilde looks amazing in a black skin tight outfit. I changed the lines to red from white and Quorra the CB750 was born. I guess if I had to categorize it, it would be a cross between a cafe racer and scrambler, and as such I have entered it in both categories. If I had to pick one it would be a scrambler, but who likes labels anyway. I appreciate your consideration and I hope you enjoy the build details.

1978 Honda CB750K SOHC donor bike found after it had been sitting neglected in a shed for twenty eight years.

2007 Yamaha R6R front end completely rebuilt with all new bearings, bushings and seals throughout forks, wheels and stem. Custom throttle and clutch cables from Motion Pro and steel braided brake lines from Coremoto. I used classic Biltwell grips stuck on Renthal tracker bars, and mounted a single 2″ CRG mirror.

1988 Honda NT650 “HAWK” single sided swing-arm with custom bearings and spacers mounts perfectly in the stock frame opening. The power is transferred from the engine with a 520 chain and sprocket setup to match the HAWK swing-arm and finished off with a VFR750 5 spoke rear wheel. The swing-arm also has all new bearings and seals throughout and has been modified to run the steel braided line inside the swingarm to keep it away from the chain. All finished off with a new Bitubo shock, and Kenda Trailmaster tires on the 17″ rims.

The frame has been been stripped of any unneeded tabs and mounts and cut to accept the new seat hoop made with integrated tail and signal LED lights. The frame was reinforced around the new single shock upper mount. After all the steel and aluminum from the entire bike was sand blasted, I had it finished off with either satin or textured black powdercoating from front to back. I personally cleaned, smoothed edges and coated every nut and bolt in black oxide to complete her black theme. CognitoMoto supplied the rear sets, and I built the custom bracket and mount for the rear brake master cylinder.

The electronics are all new including a lightened and balanced flywheel, lithium battery with matching reg/rec, and digital PVL ignition. All LED lights front and back, Motogadget key-less ignition and Speedster speedo. All electronics are put together with a custom wiring harness matched up to the donor R6 hand controls.

Engine has been cleaned and media blasted, all covers removed and powdercoated and cases have been painted before being reassembled with all fresh gaskets and seals throughout. The oil tank has been eliminated in favor of a wet sump system made by Sumpthing out of the Netherlands. Carbs are stock and rebuilt after ultrasonic cleaning, and the Sidewinder exhaust was supplied by CycleXchange.

The seat is one off custom piece made from leather and waxed duck canvas shaped around a custom pan protecting the hidden battery and minimal electronics. Paint is a simple retro two tone black with red stripe clear coated in BMW “ghost” finish.

Hopefully the minimalist details come across in the picture that I have sent and the other few pictures that can be found on my Instagram profile for the bike. It has been an amazing journey and I hope you enjoy the bike.

Cheers
Kris

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