![]() However, they have limited use in mainstream street bikes. Such expensive materials improve the performance of powerful racing machines, like the ones in MotoGP. Unfortunately, these are even more costly. Some manufacturers also use composites made of these materials and newer materials. As a result, manufacturers use exotic and expensive materials such as carbon fiber, magnesium, and titanium for these motorcycle frames. However, some high-performance sports bikes need even lighter and stiffer materials. Aluminum and alloys deliver high performance to most mainstream motorcycles. ![]() ![]() Hence, modern motorcycles make use of aluminum and alloys for the purpose. Besides, they should also look aesthetically better than traditional steel tubes. However, modern motorcycles need their chassis to be stiffer & more lightweight. It is reasonably strong, cost-effective, and appropriate for its frames. Motorcycles with low to moderate performance parameters use steel. They bend or weld tubes together to suit a specific purpose/design. Conventionally, manufacturers use steel for budget-oriented motorcycles such as commuter bikes & mopeds. The frame’s rigidity, cost, and capability all these qualities depend upon its material. ![]() The material is an essential quality of the structure. We’ll take a look at the mocked up bike in the next update.Firstly, let’s know what makes a motorcycle frame. We used my frame jig to hold the parts in alignment for tack welding (the plans are a free download) After gathering dust under my bandsaw for a year (a lot of dust, a lot of grinding, sanding, polishing and machining went on in the meantime!), we pulled it out and started mocking it up. We printed out full size plans, bent the tubing, cut, fit and welded until it looked like the drawings. I had a few pictures that I took at the workshop, but this one tells the story. Long story short, Ron built the frame in a weekend class. I offered to provide a set of plans, the neck and all of the brackets pre-cut. A while later Ron Covell was putting together a workshop on building frames. No surprise there with Mark pushing the mouse. Mark van der Kwaak has been helping with CAD design on some of our products, and I asked him to assemble a complete bike in CAD to show off some of our products. ![]() Frame Fabrication Building The Frame The beginnings of this bike go back several years. ![]()
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