Tag Archives: tools

Please Don’t Ever Do This!

This makes it very difficult to bleed the brakes but worst of all it is down right dangerous!

I was recently tasked with reconditioning a Honda CB-500 Four that had been left in the weather for a few years. When I saw the bike one of the first things that I noticed was the “front brake reservoir delete” or in simple terms a piece of Tygon tubing with a plug in it. I wasn’t impressed but had seen something similar plenty of times on the motorbike blogs and on race bikes.
Then when I went to bleed the front brake I had one squeeze of the lever (with the bleed nipple open) and then nothing. No brakes. No pumping. Nothing and the tube was still full of fluid. Continue reading Please Don’t Ever Do This!

Motard Complete & Tested

As mentioned previously on this blog, this is a motard style conversion of a Honda CRM 250 using a 2007 model Aprilia RS-125 wheels, discs and front brake caliper.

A custom bracket was designed in Solidworks to adapt the radially mounted caliper to the original brake caliper mounting holes. Designing in 3D allowed the part to be simulated (FEA) with heavy braking loads and calculate the factor of safety, stress, strain and distortion.

One of the advantages of using the Aprilia wheels over the popular wire spoke wheels is that they incorporate a cush-drive to reduce driveline vibrations. Continue reading Motard Complete & Tested

Workshop Projects

It has been very busy here with numerous projects but the main project has been a new simple CNC router.

P1010604 This is based on the “Mostly Printed CNC” machine that has featured on Hackaday, Thingiverse and other websites. This is small 3-axis machine with belt drives on the x & y axis. The z-axis has been upgraded to a lead-screw and nut.
The purpose of this machine is to get familiar with the software & hardware before commencing work on a larger platform router and then on to a third machine which should be a solid steel frame for machining metal parts. Continue reading Workshop Projects

Replacing Obsolete Parts

This was a practical application of using 3D-printing to fabricate replacements for obsolete parts. The center caps for Holden Commodores with steel rims is a good addition to crate a tidy standard looking vehicle. These parts were commonly available and many were probably thrown away when steel rims were upgraded to alloy wheels but now a set can be from $100 – $180. Continue reading Replacing Obsolete Parts