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GMAX GM35 Fully Dressed Adult Harley Cruiser Motorcycle Helmet -

$37

GMAX GM35 Fully Dressed Adult Harley Cruiser Motorcycle Helmet -

Product description

Lightweight, injection-molded polycarbonate shell. Clear coated, painted shell. Coolmax interior moves moisture from the head, keeps you cool and comfortable. Removable zip out rear neck curtain for added warmth. Rear neck curtain has built in speaker pockets. Detachable short visor. Adjustable forehead vent for increased ventilation. Padded chin strap. DOT approved. Meets the FMVSS 218 Standard.

GMAX GM35 Fully Dressed Adult Harley Cruiser Motorcycle Helmet -

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

The contact patch

This made my day and was very nice to see. Owen at Donard Custom Bikes in Northern Ireland posted this image to his Instagram. Three tires contact patch. Each at 70psi. The top three are with a road tire labeled 25mm (26mm actual) loaded 0kg, 35kg and 70kg. The middle three are with a road … Read more

The Return of the Jedi

I know a few things. After 51 years on earth I’d have to. Two of things that I know more than almost anyone I know is bicycle design and skateboard design. I’m pretty good with a couple other things. This is about skateboards. Sadly, while I’ve been making some serious progress with producing some important … 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

NFL Boys Outerstuff "Man in Motion" Pullover Hoodie

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

Super Ultra

Most steel tubing sold by the major brands is truly terrible for modern bicycles. The tubes were largely specified back in the 1970s for hobby builders to replicate road racing bikes. I’ve been asking tube suppliers for years for better tubes to select from. I’ve generally been ignored. Years have gone by like this. Back … 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

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

Cylindrical Seat Tube Post

Here’s a cool modification to the Cyberdyne frame fixture. While I worked to make the fixture as best I could in the initial round, I wasn’t going to be able to do everything I wanted as the project would never end. Now, when I can focus on just finer aspects of the use and refinement, … Read more

NonEcho Women Full Body Shapewear Open-Bust Underwear Waist Trai

This is an interesting bit. A week ago, PinkBike posted a video and article, Field Test: 10 Trail and Enduro Bikes Hucked To Flat at 1,000 FPS. This is cheap and easy content for them to produce and makes the little boys and girls happy. I don’t know what it really does other than that. … Read more

TJ Global Bamboo Roll Up Window Blind Sun Shade, Light Filtering

I’ve been working on my suspension bike design for about five months now. There’s no rush and I’m trying to do it right. I can prototype as much as I like in the computer and it doesn’t cost me a thing. What’s expensive is wasting money or time once I start cutting metal.  I’m nearing … Read more

Graphic Violence

Toolmaking has been a theme lately. After putting time into my frame fixture tooling and my press tooling and a lingering mandrel bending project. I’m hoping to get back to some go fast shit soon. I finished the leveling base plates for my Enerpac press a while ago. They have been an awesome improvement to … Read more