Entries by adrian

Fixing busted head fins

I got a couple heads from a 1989 R100GS for the salt racer. These are the ones to have since they have the so-called ‘D ports’ and have larger intake spigots since they take 40mm Bings. Got them cheap because one of them was busted up: 4 broken fins, a cracked 6mm hole that takes […]

salt racer rear end

They say you can’t be brave unless you’re scared. Well, at least I’m half way there!   The thought of tearing across a granuley surface with ‘soft  spots’ at 220+ km/h is giving pause for thought so I want to make the bike as stable as I can. The up-side-down GSXR750 forks will help at […]

dyno almost complete

The dyno is almost complete. The Datamite 111 dyno system by Performance Trends is hooked up and loaded into the laptop and I have taken the first trial runs. All that remains is to calibrate the dyno and hook up the brake caliper. Oh, and the small matter of building a room around it!

airhead salt racer gets stiffed!

There’s a certain satisfaction in hacking tons of detritus and redundant bits off a frame – a bare canvas on which to plonk your own detritus and redundant bits! Effectionally known as the ‘rubber cow’ the airhead frame is well known for it’s elastic nature.  BMW, in their wisdom, took the lengendary Norton Featherbed concept […]

dyno deck

The deck frame is made from 40x40x3 angle and 40×3 box tube and the deck itself is 5mm aluminimum chequerplate. The legs can be bolted to the floor.

dyno frame – the module

he frame for the roller module gets a look-in now. The frame is made from 75x75x6 box section and will be eventually bolted to the floor. A bracket for the brake calliper was fabricated and the pillow block bearings are standard 60mm UC212 units. The deck is 5mm aluminium chequerplate. The bearings are induction heated […]

dyno roller – in the groove

ow that the shaft has been shrunk into the roller, the assembly goes into a CNC lathe to take a lick off the O.D. and to machine cross grooves using the live tooling of the machine. Not many dyno rollers have this feature (usually heavy knurl instead) and I’m exceedingly lucky to have access to […]

Big lump ‘o’ steel

he dyno roller starts off with a raw hunk of K1045 steel, 460mm in diameter and weighing 400kg. Some people turn down each end to form stub axles, but in my case, the shaft is quite long so this is not feasible.  Instead, the shaft will be made separately and shrunk into the lump.   […]