Issue 46 is in the newsagents RIGHT NOW!
Inside is a write up on the Gunnedah Hill climb, The Paris Special motorkhana car, THREE Ford V8 classic targa cars, the third and final Mishok Escort article, and a brilliant Mini sports sedan to name a few of the articles in there.
Here it is! It’s taken forever, and about 20 versions due to my poor understanding of the editing software.
It is aimed at people that are interested in getting involved in motor sport and think it’s too hard or expensive, or people that should be interested! Forward it on to friends and family that should really be doing car things off public roads.
I know you love deeply technical articles and well made competition cars. This won’t be about that so much, at least not in these early days. The intention is to kick off with the absolute bare minimum, and slowly progress up the motor sport food chain starting with events with no barriers to entry, before moving into club level competition and so on. So far the first two episodes will be on track days and skid pans.
It is unpolished and I have made a number of technical errors that cannot be fixed, but hey, I have had a go and each subsequent issue should be better every time. Hopefully it will still be entertaining!
Annual subscriptions are now open! The next issue is due out on the 19th of January! Don’t miss a thing.
A 12 month subscription will get you a year’s worth of magazines ( 4 per year aka quarterly).
In issue 45, you will be able to read about Denver Parker’s wild R33 sedan Targa West car, the 2016 Queensland Sports Car Championship, part two of Danny Mishok’s gorgeous Ford Escort, a pair of Ford Capri Peranas owned by Simon Gunson and brilliant tech articles by Pat Clark.
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Home-Made Corner Weight Scales
Many years ago I went to TAFE with a friend of mine who we all knew as “Dangerous Dave”. I struggled in my Statics subjects, whereas Dave was a gun at it. He quickly worked out not only how to solve the problems in class, but how to apply the methods in real world situations.
Dangerous Dave concocted a rig to measure corner weights. While not exciting in itself, (there are after all many examples of homemade load cell systems on the internet) what made Dangerous Dave’s design so interesting to me was its simple elegance and an in-your-face use of science.
Dave’s take on corner weight scales was to take four cheap bathroom scales and work out how long the lever needed to be to allow the scales to operate within their functional range.
This turned out to be very simple. On a beam 1000mm long with a point load at 800mm and supported at each end will present a ratio of 4:1. That is, 600Kg at 800mm will cause a force of 120Kg at the long end and 480Kg at the short end. What that means for us is the use of a length of wood or metal on a pivot at one end, the weight of the cars wheel at the 800mm point will be easily measured with a 0-120kg bathroom scale at the other.
Take the measurement presented on the bathroom scales and multiply it by 5. This gives the true mass on the beam.
This can be scaled up for heavier cars, but the ratio does change. A 1200mm long beam with the load at the 1000mm point will require a ratio of roughly 6:1. That is, 100Kg on the scales will reveal a 600Kg point load at the 1m mark. It’s important with spring type scales to keep the weight at around the mid point of the total range as this is where they are at their most accurate.
Way back in issues 1 and 2, this article helped shape the future for the magazine as a technical resource for grass roots motor sport participants. It is still relevant today, though there are now newer tools and methods of thread repair available to the home user.
We have all done it; any of us that have ever picked up a spanner and tried to work on these infernal contraptions of ours. Often it happens at the start of a job, that last manifold bolt we leave because it looks rustier or more difficult to get to than all the rest. Usually though, it’s the last bolt on the job we have left to tighten before we can kick it in the guts and revel in our technical brilliance. It starts with that horrible sinking feeling in the pit of your stomach as the bolt tightens then goes slack again. It ends in a string of curse words that fly across the engine bay milliseconds before being followed by a spanner and half a bolt.
From Top Door Slammer to Ferrari F458 GT3
Words: Neil Roshier Action Images: Howard Shearing
So what does a drag racer who runs a top Doorslammer in the ANDRA series do when he wants to go circuit racing? … He buys a brand new Ferrari F458 GT3 racing car of course!
The sports coupe for a new generation? Already being compared with the E30 M3, the FT86/BRZ will soon hit Australia’s tracks and hills.
(First printed in Issue 31, Nov 2011) The Toyota FT86 and Subaru BRZ twins have hit the Australian sports car market like a small tornado, selling out in a very short amount of time and selling even more hype in the process. I think you would have to have been hiding under a large rock not to have been buffeted by the amount of media puffery.
Photography by Alex Maher
The Wakefield 300 is an interesting event for both spectators and competitors. It mixes a strange group of improved production, Excel and Pulsar challenges, Super Karts, Aussie Stockcars, Future-Racers and MX5 classes. The result is exciting to say the least.
Run over three days with Friday being practice, Saturday qualifying and class events, and Sunday being the main event divided into the B Group, and the Main Event. Unfortunately it is on the same weekend as the Canberra leg of the ARC. This means it didn’t have as many spectators as it should have, which is a real shame. It is one of the better circuits for spectators as the whole track can be seen from most places, and the Wakefield 300 in particular is exciting to watch.
What it also meant was that our usual Race Magazine photographers had all had better offers, so I asked my friend Alex Maher if he would like to help me on the day. I am not much of a photographer and was relying on Alex to get decent shots. As it turns out he is as bad as I am, and it became a competition to see who could out-ignorance each other. Thankfully, despite everything, we did manage to get some good photos.
Wakefield Park is one of those places that seem to run on extremes of weather. One day it is roasting, and the next there’s torrents of water flowing over it. I’m sure that race tracks create their own weather patterns somehow.
Words and Images : Alan Wheeley
GRASSROOTS MOTORKHANA SPECIAL Part 1.
People who look at my Motorkhana Special often ask about some of the things that are incorporated in it. When I explain what the certain parts do, they often say that they could never build something like that. I always reply,