Posts in the category Hacks

Hack! Custom Di2 Buttons Paired with Magura RT8TT Hydraulic Brakes on Triathlon Bike

Alexs Bicycle Pro Shop Di2 hack with remote buttons on a Cervelo P5 triathlon bike with Magura RT8 hydraulic brakes

What happens when you want hydraulic brakes with electronic shifting on a top end triathlon bike? Well, you could use Shimano’s stock bar end and climber’s shifter pods. Or, for about the same price or less, you could take your existing parts to Alex’s Bicycle Pro Shop and have them create some very slick stealth buttons placed right where you need them by the Magura RT8 hydraulic brake levers. Here’s what Julian Da Silva from the shop had to say:

I wanted to show you guys a cool little project I worked on for a customer who wanted to utilize Di2 shifters on his hydraulic brakes that came with his Cervelo P5 Six. The customer had a spare sprinter switch that he wanted me to use, so naturally from my experience playing with the di2 components, I was able to take it apart and make some modifications. The circuit board is a simple design with a common ground and positive switch. I tapped into the circuit and utilized a tactile momentary push button to act as the independent buttons on the brakes. The customer requested that he only wanted to operate the rear shifter, but if someone wanted to do front and rear, it would be no problem. This technology can be outfitted to work for disabled riders as para-athletes or take it a step further as another form of customization.

We charged $150 to do this service, this is of course if the customer has a spare shifter already.

Photos of the process below…


Absolute Black Unveils 4-Cog 40-Tooth Oversized Cassette Adapter


The oversized cassette hacks brigade just keeps on rolling, this time with a unique entry from Absolute Black.

Rather than replace just the single top cog, AB’s offering adds a 40t large cog onto a single piece of machined aluminum containing your 28, 32 and 36 cogs, too. Founder Marcin says the benefits are three-fold. First, it’s a stiffer unit as a cluster, so shifting should be very precise. Second, there’s more surface contact area on the freehub body, so less likely to dig into it and get stuck.

Third, it’ll weigh a lot less. How much so? Shift down and see…


NAHBS 2014: Brad Bingham Builds Eriksen a Full Custom Fatty, Gives Marzocchi Bombers New Life

Eriksen Bradti fat bike suspension fork Mike Curiak (2)

This was one of my favorite bikes of the show. Yeah, yeah, I love fat bikes – but I am also a total bike geek and projects like this make me happy. Called the BradTi, this is the creation of Kent Eriksen’s master welder and there is much more than meets the eye. Obviously, it’s a fat bike with a suspension fork, but it’s the amount of custom fabrication that it took to achieve which is really impressive…


Exclusive First Look: OneUp Components’ 16-Tooth Cassette Adapter Cog Splits the Difference!

OneUp Components 16t replacement cog for cassette upgrades to oversized large cogs

When SRAM first introduced their 11-speed Red22 group, they made a big deal about it having a 16t cog in the mix. Sure, it was tongue in cheek, but indeed, 16 seems to be the magic number now that oversized large cog cassette adapters are all the rage. Fortunately, you don’t need to pull apart a perfectly good road cassette to get your 16-tooth fix.

OneUp Components has just introduced a 16-tooth cog to slot in between the 13 and 19, smoothing out the jump to just three teeth on either side. It replaces both the 15 and 17 when adding their (or any other) oversized 40t or 42t large cog. The result is an even transition at the smaller end of the cassette, eliminating any 4-tooth gap.

We mated it and their new 40t cog to an XTR 10-speed cassette. Tech details, weights and first impressions below…


Weekend Group Ride: Fabvelo, Yuba, Profile Designs, Rock Guardz & More


Industrial Design lecturer Mark Richardson used off the shelf parts and salvaged items (like a weed whacker, shower stool, wheelchair and an old road bike) plus a few 3D printed parts to assemble the Fabvelo velomobile.

The design was made to be both safe and easy to replicate and hack. Richardson built it tall and stable, so it’d be easy to see by car drivers and able to easily move along with normal traffic. The covered design allows use in any weather. Richardson wanted to make it easy to build from standard parts, and eventually will probably have open source plans for anyone looking to make their own.

Check out some of the bits, and lots more, below…


Two Fat Fronts are Better Than One with the new Rungu Juggernaut Bullfrog Trike



Sometimes you need more than just a standard bike. Maybe you just want to channel your inner chariot racer or feel like pedaling around mountain biking’s equivalent of a 2 headed cerberus. Either way, Rungu’s new bullfrog trikes have you covered. Why bullfrog? Well, we suppose if the quick, streamlined recumbent 3 wheeled trikes are called tadpoles, the aggressive upright stance and large footprint of the Rungu trikes is deserving of the name. So just what is a bullfrog trike and why would you want one? Built with a fatbike rear end and a split, dual head tube design, the Juggernaut and the Kilimanjaro use dual head tubes with identical front wheels and forks that are steered through a connected handle bar. Which of course is equipped with bar ends. Rungu claims this adds additional stability thanks to the shoulder width front wheel spacing and combined with low gearing, they also claim this can get you places your standard bike or car just won’t go.

Want a front suspension bull frog? Catch one after the break…


Found: Vecnum Moveloc Long Travel Dropper Seatpost & Leveloc Universal Fork Travel Adjuster

vecnum moveloc lightweight long travel dropper seatpost

Vecnum is a German brand that’s making some pretty solid looking dropper posts and perhaps the most unique (only?) universal fork travel adjust add-ons we’ve seen. Let’s start with the post:

What sets it apart is the length of travel and the weight. Three models are available, giving you maximum drop of 140mm, 170mm and a whopping 200mm. Claimed weights are 490g, 525g and 560g respectively…and respectable. They have four fixed drop points, stopping on a push-pin cylinder system that locks the slider in place and keeps it there even if the internal gas piston or the adjusting hardware happens to fail.

Inside, two brass rails prevent twisting, keeping your saddle pointing straight forward. Drop down for plenty more tech…


Problem Solvers Offers A Number of New Problem Solving Mounts for Shifters, Lights, Di2 Batteries and more

Problem solvers new 2015 (2)

True bike nerds rejoice – Problem Solvers has a new crop of widgets perfect for dialing in your current project. Problem Solvers is one of those companies that most cyclists probably don’t know exist, but when you have well, a problem that needs to be solved their products can prove invaluable. You may be familiar with the Problem Solvers MisMatch adapters which allow you to pair Shimano levers with SRAM brakes or vice versa. New for this year is the Shimano I-spec-B lever compatible model. Yes, apparently there is a new I-Spec standard. So whenever those make it to market, PS will have you covered for $39.95-49.95.

If you love to tinker around with new frames, components, and accessories, you’ll probably dig the other products PS has in store.


Avalanche Downhill Racing Releases Cartridge Upgrade for Rockshox Pike

Pike with Avalanche Cartirdge

Avalanche Downhill Racing has a long history of offering premium tuning services and after market kits for mountain bike forks and shocks. So it’s no surprise that they recently began to offer several tuning kits for the new Rockshox Pike.

The first kit is a $375 Open Bath Cartridge and Adapter Kit. The whole shebang drops in and replaces the stock damper assembly, but not before it’s custom valved and setup for rider weight, ability, and riding style. That may seem like an extreme upgrade, but Avalanche promises this is the best performance modification you will ever do to your fork. That’s a bold claim considering the high praise virtually every rider and media outlet has levied on the Charger damper since it’s introduction. READ MORE ->