On TIG Welding

Learning to weld was a massive part of my whole first gravity racer build. I've always fancied a go at it, and when I moved into a house that had a garage perfect for workshop use, I finally had the chance to get a welder and all the necessary tools and have a proper crack. … Continue reading On TIG Welding

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Final Build & Race

Well, the race has been and gone. (Scroll down for final build pics, video and blurb!) Unfortunately, I only managed one run, but it certainly could have been a lot worse... As I thought, the brakes didnt have a lot of power but that wasn't a massive problem in and of itself. At the finish … Continue reading Final Build & Race

On with the build part 2…

In my last blog I talked about how I entered a race and have thus had to get cracking with my build. You might want to jump over and read that first HERE. The next stage was the steering components and the completion of the front and rear rolling axles. I started with the front … Continue reading On with the build part 2…

So I Entered a Race…

The problem with building a gravity car in your spare time, with no clear idea of when it needs to be ready, is that it takes ages. With a family, two kids and a dog it's hard to make time to get into the workshop and get things made. Especially things like welding, where you … Continue reading So I Entered a Race…

So You Want to Be a Car Designer?

Gravity racing design and build is generally an amateur affair. Apart from the Xtreme cars of 2005 onwards (where motor manufacturers got involved) gravity racing is still the preserve of amateur (albeit very talented) individuals. As an F1 fan I have always marvelled at the design of F1 cars, and especially the way that the … Continue reading So You Want to Be a Car Designer?

Longboard Wheel Braking System

So the lack of budget has made me choose longboard wheels for my first gravity racer build - the LGR-002. They are cheap, larger than skateboard wheels (so roll better, arguably, but at least offer more ground clearance) and have simple atatchment. Basically, the wheel holds the bearings, and then you just slot the whole … Continue reading Longboard Wheel Braking System

Contact Patch Does Not Affect Grip – Discuss….

In my last blog I talked about frontal area, and how a small frontal area seems to be one of the key ingredients in making a gravity racer that can go really fast. Part of my reasoning for this was that the Bodrodz guys in the USA were the quickest out there, and this was … Continue reading Contact Patch Does Not Affect Grip – Discuss….

Frontal Area AKA How to Go Fast…

When looking at a serious gravity racer build the one thing that's often on a designer's mind is is how to make it fast. Assuming a steep hill and a smooth road (taking cornering and suspension out of the equation for a second) how can we make a gravity racer that goes as fast as … Continue reading Frontal Area AKA How to Go Fast…

How to Add Brakes to Skate Wheels?

Following on from my initial blog about using longboard/skateboard wheels on a gravity racer, there comes the sticky subject of brakes. Most regulations for soapbox races insist that you must at least have effective brakes that operate on two wheels on the same axle, i.e. both fronts, or both rears. Scrub brakes are often forbidden … Continue reading How to Add Brakes to Skate Wheels?

Skateboard Wheels on a Gravity Racer?

Well, this is the first post on the blog and it's funny that its content represents a real turnaround in the design of my first gravity racer. Unfortunately, budget is low, and if my first car is ever going to turn a wheel in anger I really need to start thinking about the cheapest possible … Continue reading Skateboard Wheels on a Gravity Racer?