Grabouw XTERRA 2014SA Champs XTERRAFebruary 23rd, 20142 months to go.
Fundraising for Songo.info
- my daily is out! paper.li/Steve_Bryant Stories via @Bicycling_SA 2 hours ago
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This is sickening. How can anyone willingly be involved in the hunting and desecration of a species?
Thanks to Chainreaction Hub for this post:
Category: Latest News
Published on Monday, 28 October 2013 12:09
Written by Matt Cole
We’re big fans of concept bikes, gadgets and general innovation in the cycling industry, and we know you are too.
This concept bike dubbed ‘Transport’ is the latest to capture our interest. It’s a commuter bicycle design project sponsored by SRAM and developed by three Georgia Tech students, Matthew Campbell, Edwin Collier and David Hotard. It has a hubless front wheel and uses the freed up space for transporting cargo.
Why? We spoke to one of the project’s creators, David Hotard – a keen triathlete and regular cyclist – to find out…
“Although panniers and saddle bags are on the market to make commuting easier, we found that many cyclists prefer to ride with a traditional backpack. This doesn’t mean that a backpack is comfortable; it\’s just more practical than the panniers that clip to a rack.
“We discovered that many commuters didn’t want a bag that felt like a dedicated commuting bag but rather a bag that would work in any scenario. We started to look at what we do with bags when we’re traveling by car, plane, train, and other means and realised that there is almost always a compartment for them. We realised that what commuters wanted was that compartment… on their bike.”
The making of Transport
Before the final prototype was made, the team produced a number of 1/8-scale models using laser-cut chipboard, foam, MDF as well as full-scale cardboard/foam models.
Testing the storage compartment theory on an existing bike.
The storage compartment was made using PET-G, vacuum-formed over a sign foam mold.
The wooden hubless wheel takes shape.
This is a foam model of the hubless wheel prototype.
Similar to the Lunartic design seen here, the wheel rotates around a system of six bearings.
Sticking with the ‘low maintenance, aimed at commuters’ brief, the rear wheel is built around an internally geared hub.
The team added plasma-cut steel supports in high-stress areas, then applied Bondo body filler and used lots of elbow grease to sand it all smooth.
The frame was painted with filler primer and automotive paint. Here are some more pics of the as-yet unrideable prototype…
What’s the feedback been like so far?
“The general consensus has been both positive and negative. Many people are enthusiastic about the idea of adding some practicality to a hubless/spokeless bicycle wheel and believe that this kind of functionality could justify the cost and engineering required to produce it.
“On the other hand, there has been uproar from ‘experts’ who disagree about the feasibility of the design. Their concerns generally include the placement of the bag, steering, crosswinds, and geometry.
“I greatly appreciate the constructive criticism and am looking forward to addressing many of these in a redesign. Often times as a designer, especially in student work, we look to push the boundaries by challenging arenas such as material, function, and emotion. In our prototype, we aimed to illustrate the idea that a commuter bike may not necessarily have to look like a loaded down mule, but rather a speedy bike with the bags tucked away. This idea was driven by user research that exposed serious cyclists who wanted to maintain the same bike geometry on their commuter bike, look and feel fast, and avoid bulky add-ons. I think as technology advances we will constantly be pushing the boundaries of bicycle design.
“My team is happy about the discussion our design is generating and I\’m looking forward to progressing the project along.”
Are there plans to make a rideable model?
“Given the attention the project has received, there are some preliminary plans to build a rideable model. Most likely this would be in the form of a fork/wheel subsystem that I will install on my own commuter bike. I am also considering making the trunk easily detachable when not in use.”
Thanks to David for taking the time to tell us more about the Transport bike, and we\’ll be keeping an eye out for more developments in the future.
This is another great article fro BikeRadar. If you don’t already subscribe, I would highly recommend that you do so.
SRAM X01 groupset – first look
Pricing, Weights And Details For Second Tier 11-speed Mountain Bike Drivetrain – BikeRadar
Over the past few months, BikeRadar has gleaned bits and pieces of information on the new SRAM X01 groupset, through early launches of 2014 bikes. Today SRAM has unveiled complete details, including pricing and claimed weights, for its second tier 11-speed mountain bike drivetrain.
X01 and XX1 crankset comparisons
Like the SRAM XX1 crankset, the new X01 has carbon fiber crank arms. The primary difference between the two sets is their bolt circle diameter, or BCD. The X01 crank uses a slightly larger BCD than XX1, making the chainrings the only items that aren’t cross-compatible between SRAM’s two 11-speed mountain bike groupsets.
According to SRAM, the 76mm BCD rings and spiders used on XX1 are significantly more expensive to produce. To keep the price in check, SRAM opted to use a simpler and easier-to-produce 94mm BCD for X01. The aluminum X1 cranks we’ve seen specced on 2014 bikes such as the Scott Genius LT 700 650b also share this 94mm bolt pattern.
You’d also better start working on your hill intervals, as there will be no 28T chainring option for the new group. X01 chainrings sizes will be 30, 32, 34, 36 and 38.
While we’re on the subject of chainrings, it appears that SRAM has taken note of the growing number of companies (including Race Face and e*thirteen) producing aftermarket chainrings with a stepped tooth profile similar to the X-Sync design.
Not one to sit by and lose out on sales, SRAM will offer X01 level chainrings in the very common 104mm BCD pattern. This should be good news for riders looking to piece together a 1x drivetrain using cranks they already own.
Claimed weight for the X01 crankset (with BB30 bottom bracket and 32T chainring) is 655g, a 5g increase over XX1.
X01 shifters – nothing to see here
There’s not much to report on the new SRAM X01 shifter; all the pertinent technologies carry over from XX1. The X01 trigger uses the same cable pull and has the same ZERO LOSS design, allowing you to fire off successive shifts with ease. The X01 shifters are also MatchMaker X compatible.
The primary difference is that the XX1 shifter has a carbon cover, while the X01 version uses an aluminum shield that allows access to the shift cable and other internals. Claimed weight for the X01 trigger shifter is 91g.
The story with X01 Grip Shift is similar, the so-called SPEED METAL indexing and ball bearing design carrying over from XX1. Like the X01 trigger, the X01 Grip Shift uses aluminum in place of carbon for part of the lever body.
Claimed weight of the X01 Grip Shift is 143g (including handlebar clamp cable, and lock-on grip).
XX1 and X01 derailleur comparisons
The X01 groupset’s one and only derailleur shares the technologies that make the XX1 model the most critical piece of the 1x puzzle.
The X01 derailleur has two 12T pulley wheels that spin on cartridge bearings. The upper pulley is offset to maintain proper spacing between the chain and cassette as the chain moves from one end of the cassette to the other.
The two mechanisms that keep chain slap to an absolute minimum – the horizontal parallelogram design and roller bearing clutch – are also present. The construction of the derailleur body appears to differ slightly, although the X01 model does get a carbon cage.
Claimed weight for the X01 rear derailleur is 252g.
XG-1195 cassette – new black lasts longer
Perhaps the most noticeable component in the X01 group is the blacked-out cassette (we’d call it stealthy if it weren’t for its massive size). The black color comes from a surface treatment intended to extend the life of the cassette. SRAM claims this is less costly than the coating used on XX1.
Cassette range is the same as for XX1: 10-12-14-16-18-21-24-28-32-36-42. SRAM claims the manufacturing process is identical to that for the XX1 cassette. Both start life as a block of 4130 chromoly steel and are CNC’d into a 10-speed cassette. The massive 42T cog is constructed from aluminum and press-fit onto the cassette via 16 mounting pins to complete the 11-speed sprocket.
Not surprisingly, X01 uses the XD driver body. A list of companies offering wheelsets compatible with this design can be found at www.xddriverbody.com.
Claimed weight for the XG-1195 cassette is 275g.
PC-XX1 chain – same chain for both 11-speed groups
We’ve been told by SRAM that both the XX1 and X01 groups will use the same 11-speed chain. The 11-speed chain previously used for XX1 had cutouts in the outer plates to shave weight. The new PC-XX1 chain does away with these cutouts.
Claimed weight for the PC-XX1 chain is 252g.
SRAM X01 US/UK/European pricing (no ZAR pricing just yet)
|Item||MSRP (US)||RRP (UK)||RRP (Europe)|
|X01 cassette, 10-42T, 11-speed||$399||£299.99||€359|
|PC-XX1 Hollow Pin chain, 118 links, 11-speed||$63||£49.99||€57|
|X01 cranks (chainring and GXP cups not included)||$279||£199.99||€251|
|X01 Grip Shift, available in black or red with locking grips||$129||£99.99||€116|
|X01 rear derailleur, available in black or red||$269||£199.99||€242|
|X01 X-Sync chainring 30T||$98||£74.99||€88|
|X01 X-Sync chainring 32T||$105||£74.99||€95|
|X01 X-Sync chainring 34T||$113||£79.99||€102|
|X01 X-Sync chainring 36T||$120||£84.99||€108|
|X01 X-Sync chainring 38T||$127||£94.99||€114|
|X01 X-Sync chainring 32T 104BCD||$105||£74.99||€95|
|X01 X-Sync chainring 34T 104BCD||$113||£79.99||€102|
|X01 X-Sync chainring 36T 104BCD||$120||£84.99||€108|
|X01 X-Sync chainring 38T 104BCD||$127||£94.99||€114|
We’ll have to wait until we get our hands on a compete SRAM X01 group to find out how the claimed weights stack up against those of XX1 in the real world (curiously, several of the claimed X01 weights are lower than our actual XX1 numbers). For now, at least, it appears that the marginal increase in the weight of X01 is offset by the reduction in price.
Performance should be quite similar to that of XX1, given the fact that the drivetrain’s critical technologies – the X-Horizon rear derailleur with SRAM’s Type 2 Roller Bearing Clutch, X-Sync tooth profiles, and the 10-42T cassette – have all carried over to X01.
While still a high-end group with a substantial price tag, X01 promises to bring 1×11 performance to a broader audience. And if the recent development of 1x specific mountain bike frames is any indication, both of SRAM’s 1×11 groups will be extensively featured on mountain bikes in the coming years.
This raises the question of whether SRAM will continue to adapt its 1×11 technology to the more affordable X9 and X7 levels. SRAM spokespeople wouldn’t comment on the possibility, but given the company’s level of investment we’re optimistic that the 1×11 trickle-down will continue.
X01 is already available on select 2014 mountain bikes; it will be available aftermarket by mid-September. For more information visit www.sram.com.
We are putting a team together again for the 2014 XTERRA. We’re hoping to raise ZAR50,000 for 2014.
The money raised will be used to contribute to the facilities for the children at Songo.info. One of the projects on the go is to build a computer room, study and library facility in the new clubhouse.
This year the Songo.info charity team had 6 full and 13 teams with 12 Songo.info mountain bikers that took part in the Grabouw XTERRA 2013, and we raised over ZAR36,000, more than double what I originally hoped to raise?
If you want join the team, please let me know! I’m always looking for individuals, swimmers and runners and once there are no more Songo.info riders, then mountain bikers too.
How many times have you wished this existed! I for one regularly wish I had a mechanic in my pocket! Well now you can have a mechanic in your pocket. Chec out this post shamelessly copied from Bike198.
BIKE DOCTOR – iPhone, iPad and Android Bike Maintenance App By Robb Sutton | on July 15, 2013 | Bike Maintenance, Mountain Biking, Road Biking.
A friend of ours Andreas over at London Cyclist has been hard at work perfecting his bike maintenance app Bike Doctor. As you can see by these shots below, it has become a highly refined bike maintenance app for your iOS or Android device that is separated out into mountain, road and commuter sections.
- Designed To Be Easy To Follow – Bike Doctor was created after a frustration with bike maintenance manuals that make it far more complicated to maintain your bike yourself, than it really is. We’ve written Bike Doctor in a way that even a complete beginner could follow the instructions. We’ve got pictures for each step and we’ve been careful to not skip out any important details. Basically, bike maintenance guides don’t come better than this.
- Never More Than A Few Taps Away – Bike Doctor works on iPhone, iPad, iPod Touch and Android devices. Whether you are pedalling down a mountain, on your way in to work or sat at home, you are never more than a few taps away. Whenever you have a problem with your bike, load up the app, tap the part of your bike with an issue and follow the detailed instructions.
- The End Of Squeaky Brakes – From replacing a gear cable, to truing a wheel and bleeding disk brakes. All the common bike repairs are covered, but Bike Doctor goes beyond that. There are also additional guides that show you how to avoid the most common maintenance errors, how to stop bike squeaks and prevent punctures. With Bike Doctor you’ll never put up with a squeaky bike again.
There are a lot of apps out there especially on the Android platform that really don’t deliver in terms of quality and performance. Bike Doctor really does come through on a polished, professional look that is also incredibly functional for cyclists looking to wrench on their own bikes. At Bike198, we believe that every rider should have a working knowledge on routine and necessary bike maintenance. This app is great because you can even pull it out on the trail if you run into mechanical issues. Who doesn’t have their phone with them 24/7 these days? And I don’t know about you…but I hate sifting through manuals, printing out directions or searching around all of the time. Having everything in one place sure does make things easier.
WHAT DO YOU THINK?