Showing posts with label disc brakes. Show all posts
Showing posts with label disc brakes. Show all posts

Thursday, November 12, 2015

The 2016 Trek Crossrip Elite Is Everything You Need It To Be

Quick in Traffic, Sure-footed, Comfortable on Long Rides.

Who could ask for more?



Sporting a light aluminum frame and a carbon fork, this bike is lively, fast and ridiculously fun to ride.

It's 18-speed drivetrain consists of Sora front and rear derailleurs and shifters, giving you a wide range of gears for help on the steepest hills.

Hayes CX-Expert mechanical disc brakes give you all weather stopping power so you can commute all winter long and tackle the sloppiest cross courses. Built-in mounts make it easy to add racks and mudguards for added versatility.

The wheels are tubeless ready and the tires are Bontrager Hard-Cases, so flats are pretty much a thing of the past, too.

Bontrager's proprietary Race Lite IsoZone bar means more comfort, less fatigue, and more control. Integrated IsoZone pads in the alloy handlebar reduce vibration displacement by 20% without altering the bar's profile.



It's no wonder Trek challenges us with a question: What can't this bike do?


SPECS

Frame
100 Series Alpha Aluminium w/rack & mudguard mounts, internal cable routing, inboard disc brake mounts

Fork
Bontrager Satellite Plus, carbon disc w/lowrider mounts

Front hub

Formula DC20 alloy

Rear hub
Formula DC22 alloy

Rims
Bontrager Tubeless Ready

Tires
Bontrager H5 Hard-Case Ultimate, 700x32c

Shifters
Shimano Sora, 9-speed

Front derailleur
Shimano Sora

Rear derailleur
Shimano Sora

Crank
FSA Vero 50/34 (compact)

Cassette
SRAM PG 950, 11-32, 9-speed

Pedals
Nylon body w/alloy cage

Chain
KMC X9

Saddle
Bontrager Evoke 1

Seatpost
Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset

Handlebar
Bontrager Race Lite IsoZone, VR-CF, 31.8mm
1038 W. 4th St.
Ontario, CA 91762
(909) 984-9067
www.bumsteadbikes.com

Stem
Bontrager Elite, 31.8mm, 7-degree, comes w/computer & light mounts

Headset
Cartridge bearings, sealed

Brakeset
Hayes CX Expert mechanical disc brakes, Tektro alloy levers

Grips
Bontrager gel cork tape

Thursday, July 16, 2015

All New SRAM Guide Ultimate Brakes Offer More Consistent, More Reliable Braking Power

Photo from Vitalmtb.com

SRAM's Most Advanced Braking System EVER - PHOTOS



Product Photos: Ryan Palmer
bikemag.com







With its completely new, 4-piston S4 caliper, SwingLink lever cam, and carbon lever blade, the 360-gram Guide Ultimate stands alone as the new leader in its class. It has been engineered to be light and powerful, with superior heat management capabilities, which give you better, more consistent, more reliable braking. The new caliper design also incorporates a re-designed seal and aluminum piston interface for ease of setup and improved consistency, while Bleeding Edge technology makes bleeding Guide Ultimate a quick and easy task.



SRAM Guide Ultimate
The Guide Ultimate master has all the same guts as the Guide RSC, but is dressed with a carbon lever blade and titanium hardware.
SRAM Guide Ultimate Caliper







There’s a whole lot more to these new stoppers than carbon levers and fancy bolts. The real magic of the SRAM Guide Ultimate is in the all-new S4 caliper. Aside from needing to maintaining piston size and pad shape, engineers were given free reign to design the ‘ultimate’ caliper to mate with the already-impressive Guide master. SRAM’s main goal with the S4 caliper was to create a brake that feels exactly the same every time you pull the lever. This is accomplished by managing heat, creating super-consistent seal/piston rollback, and simplifying the bleed.

This little piece is a heat shield, and it’s responsible for significantly lowering the running temperature of the Guide Ultimate. SRAM experimented with heat shields around the whole pad opening, but found that the most significant gains were made in just the one location.











SRAM Guide Ultimate caliper



The black caliper on the left is the existing Guide caliper, and the one on the right belongs to the new Guide Ultimate. To make further reductions in the running temperature, engineers significantly increased the size of the pad pocket. You can barely make out the heat shield at the very upper part of the pad pocket. Between the new pistons, heat shield and wider opening, SRAM claims that the Guide Ultimate runs cooler than a Shimano XTR brake with both Ice-Tech and Freeza technology.
To simplify the bleeding process, there’s a new bleed port interface, with a new tool. The tool snaps into place and is held securely with a snap ring and rubber seal. After the connection is made, turn the knob counterclockwise to open the system for bleeding. There’s also a redesigned fluid path that allows bubbles to move through the system without getting caught up–as long as you have the pistons pushed back in, that is. To help remind you to do this, SRAM put the bleed port on the inside of the caliper so that you have to remove the wheel in order to do a bleed. Not only will it remind you to reset your pistons prior to bleeding, it’ll keep brake fluid off your rotors.

SRAM Guide Ultimate Bleed Adaptor
Here’s the bleed adapter locked into place.
SRAM Guide Ultimate

To round out this new flagship stopper, SRAM will be offering two-piece Centerline rotors in both six-bolt and Centerlock mounting and in 140-, 160-, and 180-millimeter diameters. They’ll retail between $72 and $78.


SRAM Guide Ultimate
And from the side.


Come to Bumstead's Bicycles for all your cycling needs.
We are located at 1038 W. 4th St in Ontario, CA.
You can reach us by phone at (909) 984-9067