Mountain Bike Magazine MTB Autumn 2019 | Page 128

TECH | BUSH MECHANICS » Depending on the type Spook and Erica at a bush mechanic workshop at Trail’s End Bike Hotel screws “inwards”/tight, until gear is “jammed” on a specific gear (“righty tighty, lefty loosey”), alternatively, release or cut gear cable » Force the derailleur to your chosen gear and find a twig or stone to insert into the derailleur mechanism near the spring, this will jam it in place REPLACING BRAKE PADS » Pack a slightly used set of brake pads in your spares stash. Reason being, the pistons will have pushed out and if you fit a brand new set of brake pads, they will rub against the rotors, causing drag and resistance » Remove the wheel from bike frame » Undo the pin or bolt that keeps the brake pad/s in place » Remove old brake pads, with the spring in between the pads IMPORTANT » Remember the position of the spring and pads and replicate » Do not pull your brake levers when there is no wheel in the frame – your pistons 128 | MTB | tech talk will close down and you will not be able to put the wheel back in » Replace pads and spring and secure with pin or bolt » Put wheel back in bike and spin to check rolling resistance » If you cannot get the rotors to fit back between pads, use a flat screwdriver, knife blade or flat object – make sure the tool you’re using is clean and not oily or greasy » Insert between the brake pads and pry them open, gently If brake pads rub against the rotors: » Undo the caliper bolts (bolts that tighten brake caliper to frame/front fork) » Pull the brakes fairly hard » Now retighten the caliper bolts, one at a time, alternating between the two bolts to ensure the washers don’t move about » Release brake levers, spin wheel and check that the wheel spins freely of spoke, you might be able to remove it. If not, just bend it around the nearest attached spoke » Be careful not to puncture your rim tape while removing the broken spoke » You might want to loosen the spokes on either side of the broken one to help straighten a buckled wheel » If the wheel is tacoed to the point where it won’t fit through the fork or frame don’t be scared to use your full body weight with the wheel laid flat on the ground and the buckle point against the ground, then try to push down on either side of the rim. If that doesn’t work, you opt for brute force and bash the rim against something to try and true it enough for it to roll freely again. You’ve got nothing to lose at this stage BENT DERAILLEUR HANGER » The derailleur hanger is intended to bend in the case of a big hit to prevent damaging the derailleur » The easiest way to see the bend is to crouch down behind the mech with the bike standing straight, pry gently using the distance and angle from the wheel as a rough guide » Bending the hanger reduces its strength significantly, so be careful not to cause further damage » Your gears may still be clicking and clunking but hopefully this is enough of a fix to get you moving again DAILY CHECK If you are making use of a mechanical service, your bike will usually be stored in the official bike park. It’s in your best interest to check the following each morning before you start your stage: » Wheel axles/quick releases are tight » Tyre pressure » Stem bolts » Gears are running smoothly » Chain is lubed (we know it’s messy but ensure you use a specific “wet lube” if it is going to be a wet day) So, don’t let a broken down bike break your spirit. Every recovery from a breakdown deserves a celebration of your resourcefulness. Turn your bike upside down, crank the pedal and hold your bottle cap to the knobby tire as it spins. Popping that cap will ensure that your day just got that much better. Daisyway Coaching Systems was founded in 1999 and has been involved with the Absa Cape Epic, in many different roles, since the first race in 2004 EPIC/SPORTZPICS BROKEN SPOKE