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It is tricky to start pedaling uphill, especially with some complicating factors out there. I want to learn the proper technique.

Saddle height

For any uphill, I put my saddle at "XC height", that is, leg straight when the pedal is in it's lowest point. Is this correct?

White scenario

You are spinning up a steep slope, suddenly the rear tire shoots a large stone out you loose control. You either have to get off the saddle and put a leg down, or tilt the bike at 45 degrees and put a leg down. In both cases the bike comes to a complete stop. How do you re-attack the slope?

If you try standing on the pedals for more initial power, the back tire will spin out on the loosely-packed dirt and gravel. To si on the saddle is awkward, as the slope is adding to the saddle's height.

Black scenario

You are blazing down a 6 degree decline on an unknown trail, do a swithcback ... and are faced with a 500 meter barely rideable uphill. You try to switch gears, but do not succeed in time. Now you are at a totally wrong gear, some 10 meters up a hill, that you must ride up. What do you do?

What I do

White scenario:

  • Grab the handlebars
  • Put one leg over the bike and step on the far pedal, move it in 2 a clock position
  • Try to press the side of my butt to the saddle nose in order to apply some pressure
  • Gradually apply power to the pedal and slide back the saddle, praying that the rear tire does not spin out and to need to do the whole procedure again

Black scenario: ride back down.

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For the Black Scenario you've got to consider what's on the other side, if riding back to the trail the way you came is a decent ride then ride back down otherwise don't be too proud to push and walk to the top!! –  DWGKNZ Dec 26 '13 at 19:37

2 Answers 2

up vote 6 down vote accepted

Saddle height for MTB might need to be a bit lower... I'll skip being the expert on that though as I've heard all sorts of preferences...

Your balance steps in greatly here, how slow can you ride or how long can you stay upright when stopped; how much front tire popping up during that climb can you handle. That doesn't answer anything, but obviously it helps. For some more tangible tips (adding to your list).

Black scenario: yup, just too steep to start on. It's a fact that we can ride steeper than we can start on.

White scenario:

  • Pedal at 2 o'clock: yes, as high as you can tolerate it. Maybe even 1 o'clock, as you be a bit back on the bike (only so far back that there's still some weight on the front for steering). The front tire may very well come up as you do this, don't worry and save the steering for when the wheel is actually touching if you can.
  • Choose a place with some traction if you can. Wet tree roots are not the place :) In fact, note the next few good traction spots... and also the slippery ones.
  • Don't choose a gear too low, you won't get enough umph out of one stroke to stay up on, and it'll be harder to ease into the torque. You want to be putting all your weight on it, and pulling with bars too... one gear higher (or two?) than what you might use had you not fallen off. That will move you a bit farther on one stroke, but you'll have to push hard and be ready for the end of that first stroke (the dead spot is longer too!)
  • As you do that stroke, transition your weight forward. Forward weight is not what you want, but by transitioning forward you're pushing on the back tire. Aim to be slightly forward when you end your stroke. Imagine you're pulling the weight off the front wheel , and that action leaves you slightly forward at the end of the stroke.
  • Near the bottom of your stroke, when the torque is rolling off flick the bike forward with the handlebars to get you through that first dead spot, this will take a lot of shoulder action. (I've also seen guys do a quick 90° back pedal into that 2 o'clock position again, rather than fumble through the dead spot;). If your trail is ridden with tree roots and slippery spots you can also use the quick back pedal to align your dead spot with that tree root, and flick over it.
  • After a few strokes and some speed you might be able to coast for one pedal and shift back into a lower gear, and you can call it a successful start.
  • If you really want to improve your chances of starting, take a quick 1min breather; take a drink and a wiz. You'll need to be ready for putting in the sprinting effort required to get started again.
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"I'll skip being the expert on that though as I've heard all sorts of preferences..." - that makes you "The Expert." :) Only thing I can add is to ride at an angle to the slope as much as possible until moving. Even a few degrees across a single track can make all the difference. –  mattnz Dec 26 '13 at 19:26
    
Best comment on saddles I've seen! Set up needs someone who knows what they're doing height, position on rails and angle all need to be considered. If someone asks you to bike around a carpark to test the set up point out you ride up hills not round parks, angle is very important. –  DWGKNZ Dec 26 '13 at 20:48
    
I use a rolling start combination of both Michael and Mattnz. Set the gear I want then take one or two steps on an angle to the trail to get some momentum before throwing a leg over and pedalling. I use trail pedals so can get away with pedalling a bit before having to clip in. –  DWGKNZ Dec 26 '13 at 21:05

Along with what @Michael has stated a technique I use is to find a rock, tree root or other obstruction to keep the rear tire from sliding downhill. With the front brake applied start to pedal. When you have both feet off the ground and on the pedals release the front brake and start to pedal smoothly. A stroke that is too quick will re3sult in the rear tire beginning to spin and result in you being stopped again. It is a technique you can practice on the road or less technical incline. The key to making it work is a smooth yet powerful consistent pedal stroke.

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