February 20th, 2008 
admin Parts & Accessories On eBay
 |
 2012 Cycling Mountain Bicycle Bike Handlebar Bar End Grip  US $.99
|
 Shimano XTR Brake Lever Set M950 Vintage Nice Condition US $59.00
|
 KONA MTB Stem 254 US $7.00
|
 Risse Genesis Rear Shock US $35.00
|
 Shimano Deore XT SL M740 8 Speed Shifter 8speed US $77.00
|
 KONA DH Riser Handelbars 254 US $5.00
|
| Powered by phpBay Pro |
Mtb Brake Cable Constantly Getting Loose?
I have a Shimano ST-EF50 lever, disc brakes with the brand 'Chosen'(??) and i recently switched my brake standard cable to Teflon coated cables. It feels like its constant getting loose. I don't like to squeeze the lever all the way to the grips, but it gets closer all the time. Whats wrong? Is the cable stretching? (both the standard and Teflon cables were still new) Is there something wrong with my setup/system?
I assume that you replaced cables AND housing. If not, replace the housing with compressionless type.
Your main problem, however, is the brake calipers and the reason that you should never buy a low end bike ESPECIALLY if equipped with disc brakes.
To understand this I'll explain in general terms how a mechanical disc caliper works then explain what is going on with yours.
There are 2 brake pads in calipers. One is generally fixed (better ones are "floating", but not yours) and another one is movable on what could best be described as a ramp. The caliper body has an opposing ramp on which the movable pad moves. Squeeze the lever, the cable pulls the arm which rotates the ramp, closing the distance between disc and pad and eventualy making contact to stop the bike. Got it? Good.
On your calipers, the body is made of metal and the movable ramp is on plastic (or visa versa). Every time you squeeze the lever, the metal forces the plastic out of shape and compresses it. On extended use, say, 100 pulls of the lever or so, the plastic compresses and wears away which means the pad doesn't quite reach the disc with the same amount of force. This requires a readjustment of the cable to bring the pad back into range which in turn causes more wear to the plastic, ad nauseum, until the brake is trashed.
In the early days of mechanical discs Promax had a problem that they keyed the plastic actuating arm and fitted it to a hardened metal bolt. This setup failed almost immediately, but Promax finally got it (more or less) correct.
So, to repair your bike I strongly suggest that you get rid of the Chosen calipers and get something at LEAST of the Promax level, but Avid mechanicals would be my preference.
Formula R1 mountain bike disc brake at twohubs.com
Parts & Accessories @ Amazon
 |
Mirrycle MTB Bar End Mountain Bicycle Mirror List Price: $18.00 Sale Price: $9.70  |
|
The Mountain Bicycle Mirror from Mirrycle provides a wide view of the cars behind you, so that you don't have to turn your head as you bike. Designed to fit mountain bike style handlebars, the three-inch round mirror mounts on your handlebar's bar end in minutes with the included wrench... |
 |
Avenir Nylon Bicycle Cover (Mountain Bike) List Price: $24.99 Sale Price: $20.99 |
|
Protect your ride from the elements with this form fitting nylon bike cover! |
 |
Planet Bike Beamer 3 LED Bicycle Light with Quick Cam Bracket Mount List Price: $24.99 Sale Price: $19.99 Used From: $24.99 |
|
Whether you're a 24-hour racer or a super commuter, the Planet Bike Beamer 3 bicycle light will keep your path well lit. The Beamer 3 is equipped with three white Nichia eXtreme v2.0 LEDs, which not only illuminate your way after the sun has gone down, but also make you visible to passing cars or pedestrians... |
 |
Diamondback Response Sport Mountain Bike (2011 Model, 26-Inch Wheels) |
|
Compared to a full-suspension mountain bike, a hardtail is better suited to several situations, such as riding to class, dirt jumping, riding on smoother trails, or just cruising around the neighborhood... |
 |
Mongoose Status 3.0 Dual-Suspension Mountain Bike (26-Inch Wheels) List Price: $369.99 Sale Price: $300.00 |
|
The Mongoose Status 3.0 26-inch dual-suspension mountain bike is equipped with everything you need for trail riding. The bike features a full suspension frame that maximizes comfort and performance, along with an SR suspension fork designed to smooth bumps and increase control... |
 |
Topeak Bike Cover (Mountain Bikes) List Price: $49.95 Sale Price: $28.21 |
|
Protect your bike from the elements with the Topeak Bike Cover. It quickly folds to a compact size for storage and just as quickly unfolds to offer weather-resistant protection for your mountain bike. Specifications: Material: 190T nylon Dimensions: 70 by 24... |
 |
Topeak Pocket Rocket Master Blaster Bike Pump List Price: $21.95 Sale Price: $14.00 |
|
The Pocket Rocket Master Blaster from Topeak is a lightweight mini pump designed for road use, with an efficient design that pumps to 160 psi. Weighing in at just 4.05 ounces, the Pocket Rocket features alloy barrel construction with a soft Kraton head and plastic handle for a secure grip as you pump... |
 |
Giro Indicator Sport Bike Helmet List Price: $39.99 |
|
The Giro Indicator's confident style and superior ventilation are coupled with a modern design that complements every type of rider. As a result, the Indicator helmet is the perfect choice for riding downtown, up a technical climb, and everything in between... |
 |
Diamondback Cobra 20 Jr Boys Mountain Bike (20-Inch Wheels) |
|
With a steel frame built for speed on dirt trails but with features conducive to a beginner, The Cobra 20 Jr. Mountain Bike is Diamondback's introductory mountain bike for boys. It features a front suspension fork, and durable Shimano twist shifters and derailleurs for trouble-free, single-handed gear changes that familiarize the beginning rider with the process of shifting... |
 |
WTB Velociraptor Cross Country Mountain Bike Tire List Price: $0.00 |
|
A true classic mountain bike tire. Works well in all conditions. Designed to handle a variety of dirt conditions, this tire boasts large, directional treads that dig deep to provide you with exceptional climbing and cornering traction Front tire gives you precise steering control and soil clearance Rear tire climbs and brakes with powerful vengeance Lightweight casing rolls fast, tearing through anything in its path Sold each - specify front or rear Size: 26 x 2... |
Posted in 
Tags: 
