Rotrex Superchargers

Uncategorised

Rotrex supercharges work on a principal of a turbine the same way that turbochargers operate. For this principle to work the turbine spins at very high speed.

Rotrex achieves speeds of up to 250,000 rpm using planetary gears and its own oil system, the result being high pressure from a compact unit the size of an alternator.

This produces a linear increase in boost pressure and power band right to the red-line using very little crankshaft power so what is done with the throttle is transmitted directly to the rear wheel. There is no heat build up so components run cooler which reduces fatigue,exhaust temperatures are lower, efficiency over a turbocharger can be up to 10%.

Other Advantages:

  • Wilder camshafts can be used to take advantage of the boost increase
  • Lower compression means easier engine starting cam chains and shafts less stressed
  • Less cost as $ per hp cheaper than normally aspired engines
  • Progressive power means no stressed engine parts
  • Nitrous injection cools the intake charge reducing knocking effect.
Software now available for the Gen 3 Hayabusa!

Software now available for the Gen 3 Hayabusa!

After much anticipation, Woolich Racing have launched their latest performance software for the Gen 3 Hayabusa. This comprehensive setup will allow us to have full control over tuning the GSX1300 engine, to make the most of our Kit. So not only will it deliver savage...

NZ Motorcycle Show 2022

NZ Motorcycle Show 2022

May 2022 saw us attending the first NZ motorcycle show since 2018. What a blast to be there. Both days were jam packed with people and activities. We were so thrilled to receive First place award for best production bike modified for our Triumph Thunderbird. It was...

Finished Bike

Finished Bike

Dyno results above. 140 h.p at the wheel, very happy with that performance. Now she makes a great road bike. Looks great standing still Rides like a normal bike if the revs are kept below 4000rpm At 100km/hr 3600rpm producing only 2psi of boost giving 5.4 litres per...

Engine Start

Engine Start

So with the crankshaft not timed correctly i had to dismantle top of the engine again. Fortunately I could re-use the gaskets as engine had not been fired up. I made up a tool that allowed the crankshaft to align correctly without having to split it again. What I also...

The Re-build

The Re-build

Few months later the forged pistons and Carrillo forged rods arrived from the states. Also I added to the mix was Hayabusa injectors as the standard ones had a flat spot in middle rpm range. Lack of fuel I think. The first new lesson was understanding what bolt...

Going Home Early

Going Home Early

What do i do with a dead bike? I had access to a workshop in Invercargill so made a plan. Visited a few bike shops managed to scrounge some old steel frame parts. Out with the Mig Welder and made myself a frame to protect the bike getting home. Around to my mates at...

Teretonga Park Twilight Drags

Teretonga Park Twilight Drags

Road Flooding delayed my arrival for the Harley Davidson Twilight Drag Racing. A quick Bike clean, through the scrutineers then on to the track. Never done this before could be interesting. Sky Sport spied the bike so a short interview was taped on my journey so far....

Invercargill Bound

Invercargill Bound

Next on the list was to enter the bike in the Burt Munroe Bike rally. This annual event located at bottom of the South island in Invercargill is a mecca for bikers. The targeted event amongst the many choices was the Teretonga night ¼ mile drag racing. My plan was set...