The other day, I was chasing down the problem on a slow leaking tire. In the era of tubeless tires with Cushcore, flat fixing, while rare, isn’t trivial. It’s nice when a puncture is obvious but often now, it isn’t. So we need to go to the dunk tank. Until recently this was my kitchen … Read more
I like to do an update on my bikes from time to time. Sometimes, I’m just repurposing them. Other times I’m cleaning them up and I decide it’s time to talk about them. It’s not often a designer talks about how well something is working long after it is released. Doing this gives me some … Read more
The rise of the machines… TL;DR: This isn’t just another Arctos frame fixture clone. It’s a better solution and one you’ve never seen. The rules of the game have been re-written. If I were to say where this began, it would probably be back at the 2016 NAHBS show in Sacramento. I had spent the … Read more
This is part 2 of the Greg White saga. Be careful out there. Greg may be in the Portland area now. There’s a special power in saying what you’ll do and doing what you’ve said. Action is everything and words just connect actions. That became clearer than ever for me today. After Greg White stole … Read more
This is part 1 of the Greg White saga. Be careful out there. Greg may be in the Portland area now. POST NOTE, 10:35AM: Since going live with this post late last night, I have received about a dozen emails and phone calls from people that have been victims of Gregory White. People whose lives … Read more
Warning! Some of the information below has been superseded by new information. A while back, I wrote a piece on recognizing expertise in those around us. It’s pretty good, you should check it out. In that essay, I talk about how an expert can recognize systems around them and build those systems into other systems, … Read more
“I would have written a shorter letter, but I did not have the time.” -Blaise Pascal COVID-19 is a bad thing but many of us keep trying to find and see the good things. One thing that I have enjoyed about the COVIDs is the time I can spend really savoring the design process. As … Read more
SRAM Guide and Level brakes work pretty well. I use them. In general, they do what is needed. Not perfect, but nothing seems to be right now. For flat bar all-road conversions that have flat mount calipers, we use the Level levers, not the Guide. This keeps the leverages correct. Level levers can also be … Read more
This is the time of the all-road bike. It’s been the bike to have for the past 3 months as COVID-19 has brought a whole new mode for my bike rides with my wife, Windy. Many mountain biking areas near us have been closed for a long while. At the same time, Bolinas/Fairfax Road and … Read more
Advice for the aspiring designer; Have lots of patience, keep working hard, don’t ever stop! I’m currently working on producing a new fixture for making my bicycle frames (a mandrel bender also but that is another story). I need a tool that will work better than what I have been using for modern geometries, mopeds … Read more
Back in November 2019, I posted a stream of consciousness, ending in an enlightening concept: PVD/RAD. It looked promising even in that primordial state. The problem with that post is that it was confusing and left folks with more questions about the process than the answers it could have. Six months later, I’m still excited … Read more
Today is my day to eat some crow. Attentive readers will know of my work on brake caliper mount locations and a tool for attaching flat mount caliper bosses in the correct location. I’ve been pretty proud of this work. It cleans up a big mess. Devin Bodony of Lichen Precision, a machinist bro that … Read more
After all the drama of the winter injury season has subsided and the lazy days of COVID-19 are here, I finally got back to the fork test video that I had intended to do on the day I broke my clavicle….and then big toe. Originally, I had intended to do this filming with a GoPro … Read more
2020-04-17 All-road tire test: Subject: Maxxis Velocita AR, 622-40,120TPI, 380g, tubeless. Setup: 50psi with Cushcore CX insert on both wheels, Orange Seal endurance. WTB KOM i25 rims. Tire width measures 42.25mm on the i25 rim. Bike: PVD T-47 Airspeeder All-Road. 40/10-50 gearing. Rider: PVD, 205 lbs, fat, out of shape, expert dirt. Conditions: Dry but … Read more
That’s right. Pimpin’ ain’t easy. I try to look very closely at all aspects of my riding. That’s not restricted to my bike or the trails that I’m on but also what I’m wearing. Anything can be optimized! What do you need? Make that happen. I’ve talked in the past about the need to cut … Read more
In photography and filmmaking, the joke is often made that “it can be fixed in post” to justify doing very low quality work. It’s true that there are a several small issues that can be fixed after the image has been captured. Some colors can be shifted, a smudge removed, subtle white balance changes, the … Read more
This came up in a discussion the other day. I figured that I’d bring it up here as it is current in what I’ve done in a recent design. I’ve been working with my klunker platform enthusiastically and have just produced the Supermarine Spitfire which was building on the Sopwith Camel. It makes use of … Read more
Here we are, well into 2020. The bike industry has just two products to sell: ebikes and all-road bikes. Nothing else matters. Those are the money makers and all that folks are really paying attention to. Everybody is trying to stake a claim. On February 15th, I saw a few images on someone’s Instagram that … Read more
Just touching base on what has been keeping me busy recently. After the Supermarine Spitfire crash, I took a deeper look at the materials that I use in my handlebars. A greater safety factor was needed at the cost of a little bit of flex. Some of these bars have been in service for next … Read more
Here’s a problem some may have come across when setting up a high performance bike. It’s a little tricky. I needed to actuate a OneUp dropper post using an older style BikeYoke Triggy lever that used the 4.3mm (diameter) x 4.4mm (long) derailleur cable end at the lever. Typically, for this seatpost, we will clamp … Read more
Supermarine Spitfire. Today is new bike day. I try to raise my bar when I build a new bike. Each has to be an improvement on the past. Better, faster, funner. Whatever it takes just push farther. Maximize, minimize, optimize. There’s so much room for development. This is another next level bike where few see … Read more
The current trend in bicycle marketing is to talk about frame reach, the horizontal distance from the bottom bracket axis to the center of the top of the headtube. The ‘long’ in long/low/slack is for “longer reach” or “longer top tube”. Although this is just flagging that they don’t understand much about what they are … Read more
POST: 2020/02/15 – An attempt has been made to refine the content you see here in a newer post. This should help a bit as it is clearer and more straightforward. Last year, PinkBike published an article describing Lee McCormack’s concept of fitting bikes using his Rider Area Distance (LLB-RAD) method of bike fitting. McCormack … Read more
It’s time for the Philadelphia Bike Expo! I wanted to be there this year but lots of important work got in the way. The design for this tool was done a couple of weeks ago. The tool was supposed to be finished before PBE and show to folks in real life but thanks to late … Read more
Warning! Some of the information below has been superseded by new information. Generally, I like the motto “Move fast and break things.” It’s punk rock. It’s what tech needs to do. It pushes hard, fearlessly. It’s better to take the risk now than just pudder along doing the same old thing. Move the ball forward! … Read more
I got these new brakes from the UK just before a hard BREXIT hit on Halloween. What an insane situation for a trade company. Spooky AF. #thanksobama The moving target that is mountain bikes never fails to disappoint. Everything has changed and will again. We can’t rest. Generally, things keep getting better. I’ve been saying … Read more
At Eurobike a few weeks ago, SRAM made public their Universal derailleur hanger (UDH) concept. There was a bit of hype from the marketing shills. None of it made much sense. The problems that all of the marketing people were saying it solved really aren’t legitimate problems or serious consumer problems. I didn’t think much … Read more
I use alloy nipples when I build mountain bike wheels for myself. It’s a real weight savings right where light weight really counts. They’re really the only choice for performance use. But, they break and you fix them. Your wheels are light. Simple. Over the years, I’ve learned a few tricks… It’s the details that … Read more
I had an issue a few weeks ago that I’m getting around to talk about just now. There’s a reason for that. It’s because I now have the part that I need for my all-road bike to work again….and this is bullshit. I had a pretty good crash a few weeks ago. Bad for my … Read more
