One off late 1920's style Brooklands racer
I specialise in making custom parts for classic bikes, vintage motorcycles and racing motorcycles. From manufacturing obsolete and no longer available parts to general classic bike engineering and fabrication. Motorcycle engineering from a special bolt to a complete custom motorcycle from our engineering workshop in Wiltshire. Above is my Brooklands Sprint Special. Inspired by the classic racing motorcycles of the late 1920's that competed at the Brooklands banked circuit in Surrey, it will be a racing showcase of what we can produce. The entire vintage racing custom motorcycle was designed and made in my Wiltshire engineering workshop where I specialise in one off parts for classic bikes and modern, racing and road motorcycles. Check out Turnertech Engineering on Instagram for the latest updates. June 2018: My Brooklands SS 500 wins 'Most Interesting Motorcycle' at the Bath Festival of Motoring.
Honda CB125S racing frame created in Turnertech Engineering workshop

A new project for the winter of 2018: To complement our very successful Honda CB125T twin cylinder racer, I have begun building a single cylinder version using a 1970's Honda CB125S engine. The one off frame, based on early Honda Grand Prix racers, is now complete and a set of CB125T forks shortened to suit. A twin leading shoe Honda SL350 front hub awaits adapting and an aluminium petrol tank is the latest component to emerge from my engineering workshop. Hopefully the bike will be on it's wheels in the Spring of 2019, check out Turnertech Engineering on Instagram for the latest updates.

The new Wardill Motorcycle

In June 2017 I was approached to recreate a lost motorcycle from the 1920's: The unique Wardill supercharged 2-stroke. Not to be confused with the Dunelt, which might appear superficially similar, the Wardill featured a special phased charging piston and in competition tests proved very successful, sadly the company was a victim of the Great Depression.

Very soon the project changed to initially producing a batch of replicas with a modern engine, Turnertech to design and manufacture the prototype of the new bike, following the original as closely as possible.

Some of the major components such as the frame and girder forks were manufactured by 3rd party suppliers. Despite setbacks with some suppliers the bike was largely complete in time for the Brooklands Museum Motorcycle Show on 1st July 2018 where it was very well received by show goers and 2 preliminary orders taken. It has been a great pleasure working with Mr. Wardill, who's boundless enthusiasm for the project has driven it on so rapidly.

Suzuki GS400 bratbike

A really fun project completed for a customer in Dec 2016; this Suzuki GS400 Brat Style bike has emphasis on practicality for Summer fun:

Shortened fork stanchions, taper roller head bearings, custom fork brace, rebuilt caliper, power coated hubs and rims, aftermarket silencers fitted with more efficient stainless steel baffles and pipe adaptors, cut down rear sub frame and custom seat, modified custom rear light, tiny digital speedo and modified Honda CB100N headlamp with custom brackets, hand formed custom front mudguard, CNC machined mirror, ignition switch re located under the petrol tank and host of other small modifications and improvements.

Customer's comment after the first ride: ".. absolutely fantastic, feels so spritely and grin inducing."

Early 1920's Scott front brake replica

Replica of an early 1920's Scott Squirrel front brake backplate, torque arm, wheel spindle and nuts.

Triumph Tiger Cub crankcase repair

Typical example of the work I do is repairing this Triumph Tiger Cub crankcase; The oil feed union retaining stud hand been replaced with a high tensile steel bolt, subsequently broken and then attacked with a hammer. I successfully removed the broken stud without damaging the thread in the case and faced off the flange.

BMW bratbike
In 2015 I was approached to assist with the build of a BMW R80/7 custom bike in the Brat Style in our Wiltshire engineering workshop. After discussion with the owner extensive modifications included shortened rear subframe, relocation of battery under the gearbox, electronic ignition with coils and electrics located in the airbox. New billet aluminium top yoke, headlamp brackets, Smiths speedometer, new exhausts, brake master cylinder and hoses, Honda petrol tank, custom seat and a host of subtle details. The bike has now been returned to it's owner for cleaning and painting.
Pre war Triumph front drum

In November 2014 we made this new front brake drum for a rare 1937 Triumph Tiger 90 500cc single in our Wiltshire engineering workshop. The original part had cracked where the brake surface joins the rear face of the drum and was in a very dangerous condition. Investigation revealed that the casting was under 3mm thick in this critical area. The new one was made in a medium carbon steel with slightly shallower fins to increase material thickness of the braking surface.

Parilla front brake

New improved Parilla 175 front brake plate carved from billet. The standard back plate anchor is very weak and known to break off. This new plate is much stronger and includes a larger air scoop plus modified outer cable anchor.

Scott rear hub

Machined from solid bar this rear hub was made for an early 1920's Scott motorcycle. The hubs at this time owed much to bicycle technology and were rather flimsy so during the design stage I took the opportunity to increase the thickness of the hub where the L/H and R/H threads for rear sprocket and retaining nut are a weak point. At the customer's request the hub was also designed to accept taper roller bearings.

Billet aluminium rear chain adjusters

Billet aluminium chain adjusters made for our own Honda CB125T racing motorcycle, 35% weight of the original steel Honda components with cool looks too!

Welding repairs on site

Modifications to a Norton 'doll's head' gearbox end cover to replicate the Pre War racing version including blanking off the kickstart shaft hole. In this photo the selector stop holes are machined to accept shouldered inserts as the original threads were stripped badly.

OZ Moto2 rear sprocket carrier modifications

OZ motorcycle racing rear wheel sprocket carrier modified to suit a Moto2 racing motorcycle, also made a complete set of captive axle spacers to suit front and rear OZ forged racing wheels.