Bike Specifications

 
 

CHASSIS

Main cradle is standard Honda 500T with rear central post, cross member and all unnecessary brackets removed. Additional tubes stiffen the frame behind the engine and provide mounting s for the supercharger. Swinging arm is from a 1998 Honda CB500R narrowed at the pivot to fit. Alloy struts replace suspension units and additional bracing locks the swinging arm into the frame cradle. Ground clearance 75 mm.

FORKS

Honda CB250RS lower yoke fitted to 500T steerer tube. Lower yoke will be replaced with an alloy billet item as soon as I can find the time to make it. Kawasaki KMX200 master cylinder and caliper

FRONT WHEEL

Honda CB250RS with stainless spokes built by Turnertech.

REAR WHEEL

Honda CB500R. Sprocket carrier modified to suit chain line.

BODYWORK

One piece fibreglass.

ENGINE

Honda CB500T. Compression ratio 11:1, crankshaft rephased to 60°. Alternator and kick start mechanism removed, one off billet cylinder barrel bored to 75mm (588cc) using Wiseco forged Kawasaki pistons. Head gas flowed and fins shaved to a minimum. Cams lightened and rephased to suit crank, additional clutch plate fitted. Custom lock up clutch. Custom clutch mechanism and sprocket cover incorporating supercharger mountings and provision for outrigger bearing. Custom clutch cover incorporating external oil feeds and off board starter fitting. Oil feeds routed externally through screw on oil filter. Billet cam chain tensioner and custom off board starter.
Estimated power output 180 bhp (we hope!).

SUPERCHARGER

Eaton M45 modified to reverse direction of rotation. Manifolds fabricated mild steel, plenum chamber billet aluminium with 2 burst panels. Maximum boost 30psi.

FUEL SYSTEM

Methanol supplied to much modified 1.75" SU, main jet 3.5mm, bellmouth carved from solid. Braided -8 fuel line with custom shut off and emergency shut off valves.

IGNITION

Newtronic optical using CB500T mechanical advance with modified trigger position to accommodate new crank configuration. Full advance 42°.

EXHAUST

Fabricated from stainless steel Kawasaki ZX12R down pipes.

OTHER BITS

Rear caliper Kawasaki AR125, master cylinder ZZR400. Footrest mountings, foot controls etc. all by Turnertech.

WEIGHT

145kg. Next to a standard 500T it's a featherweight: Honda claimed 193kg dry, In reality I reckon nearer 210kg

 

First mock up using CB250RS seat cowl

Getting there, note new hand formed alloy seat

Fresh out of the paint shop, ok the shed

Fang with Shorrocks supercharger

Latest photos on the News page!