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Marky G Men's T-Shirt

Product description

Long-Sleeve Thermal with 60% combed ringspun cotton, 40% polyester waffle thermal; 36 singles; Fabric laundered for reduced shrinkage; Raw edge bottom; Self-fabric neck and cuffs

Marky G Men's T-Shirt

Skateboard Trail

When putting a skateboard together or designing a truck, we need to understand the inherent stability of the system. Control is everything and we can influence that with our choices. Often, we will talk about trail when looking into this. The trail is simply, the length of the lever that is influenced by the ground … Read more

The Roll Center

One of the most important characteristics of a skate truck, but almost totally ignored, is the roll center. I was one of the first people to discuss this back in 2000 (20 years ago!) and I’ve seen a few people replicate my explanation but not many. As I’m wrapping up the design of the new … Read more

OGLE Center Lock Rings

This was a nice gift that showed up last week. I was talking with Josh Ogle on the phone last week, I can’t remember what started this, I think that I called him about center lock threading. I was talking to him about some nerdy detail for modeling and engineering threads using equation driven formula … Read more

The problem with water bottles and hard forks

Red rubber baby buggy bumpers bounce. Red rubber baby buggy bumpers bounce. Red rubber baby buggy bumpers bounce. In the past 5 years, I’ve been doing a lot of work with rigid forks on bikes. From klunkers to hybrids, there has been so many layers of the onion that have been pulled back within the … Read more

New Possibilities with Additive Construction

Construction of the TIE Advanced X1 (Released early July) was turning a bit frantic and wild near the end. Every build that I do seems to have new features and complexities that involve even more new tools and solutions that compound production and suck up much more time than a simple redesign shown on paper. … Read more

Swatch Bee-Droid Black Yellow Dial Aluminum Rubber Men's Quart

It’s been 2 1/2 years since the PVD T-47 Airspeeder shifted my understanding of what a narrow gauge bike could do. That bike is still well ahead of what anyone else is doing but I’d found it’s limitations and ways to improve it. During COVID, most of my riding has been on my all-road bike … Read more

The SKYNET Master Plan

“Skynet IS the virus.” – John Connor Just over a month ago, the SKYNET chassis fixture project was announced. An open source bicycle chassis fixture that exceeds in capability over anything that can be purchased. It would be based on the PVD Cyberdyne System fixture but significantly more accessible and affordable. Since then the design … Read more

The more things change, the more they’ll never be the same

I’ve been so busy over the past year and a half. I’ve done and incredible amount of work on my designs and tooling but still don’t have a finished bike to show for it. New fixtures, new designs, new everything. The new normal is ‘new’. In the background recently are projects that are large in … Read more

SKYNET

Last March, early in the COVID-19 lockdown, I set out to design and build a new frame fixture for myself. This was need-based on many levels. I wanted something amazing. Something better than anything I could buy. A fixture for a new way of doing things. The result was the PVD Cyberdyne System. I still … Draxlgon LCD Display Touch Screen Digitizer Assembly Replacement

Feynman Technique

I was doing a quick spin on the bike today. The mind clears when you’re trying to ride down narrow singletrack as fast as you can. I was bopping through Hobo Trail and I was thinking about Richard Feynman and his learning technique. Pretend to teach a concept you want to learn about to a … Read more

The cutting tool problem and Park tools

Bicycle framebuilding is a particular simple craft. Connect a few bits of material together and strap some wheels to it. What makes good framebuilding difficult is everything that happens around the build. One of the harder issues to get up to speed on when making bicycle frames on a small scale is the lack of … Read more

Engineering failures

Klunkers. Dayum. These things keep teaching me some big lessons in bike design and engineering. I have been forced to look at details in entirely new and unexpected ways to solve this riddle and that learning carries to all facets of bike design. In addition to design challenges and growth in tooling and CAD, there … Read more