So you have mastered the basics of gears and shifting, but one day you shifted down to the small chainring, and your chain just dropped onto the bottom bracket shell?

Or maybe you went to the big ring and the chain flew off the ring and onto your shoe?

Well, here is what you can do…

If your chain drops onto the bottom bracket shell:

If you are pedaling along, shift down to the small chainring, and immediately lose all resistance at the pedals, there’s a good chance that the chain dropped off onto the bottom bracket shell.

If this happens, the first thing you should do is relax! You don’t need to panic or screech to a halt, just roll along.

Begin pedaling easily, and gently shift the front derailleur up like you’re going back to the big ring. Typically this is enough to get the chain back onto the small ring and spinning smoothly. (You don’t want to actually shift the whole way back up to the big ring.)

However, if the chain bunches up, you have a bigger problem…

If your chain digs onto the bottom bracket shell (chainsuck):

If your attempts to shift the chain back onto the chainring fail, it’s probably because the chain got jammed into the bottom bracket shell. When this happens, the chain bunches up and completely jams. This is known as chainsuck.

When this happens, you should stop pedaling! You’ll need to slow to a stop, get off the bike, and lift the chain off the bottom bracket shell and onto the chainring. Sometimes you may need to physically pull the chain out, if it is jammed in there tightly.

If you don’t want to get your hands greasy, take a tire lever and use that to pry the chain free and drop it onto the chainring.

If your chain drops off the big ring onto your foot:

Finally, what do you do if the chain flys off the big ring and ends up hanging outside the crank arm? Or perhaps it ends up on your foot?!

In this case, you gently roll along and use a similar shifting technique, except that now you are shifting down toward the small ring. So you will pedal gently and shift down, hoping the chain comes back up and over to the big ring.

This actually happened to me in the inaugural Tour de Susquehanna. I shifted the chain right off onto my foot! I had to slow down quite a bit, but by some stroke of luck, I was able to unclip my foot and lift the chain slightly (with my foot,) then it shifted back into place!

It won’t always work that well, but it’s worth a shot.

Let’s look at cadence when it comes to mountain biking…

Speaking of cadence, which one is efficient in mt biking – maintaining 90 rpm, or high torque and less rpm?

Thanks,
Mountain Matt

Hi Matt,

The short answer is, “it depends.”

As discussed in my proper cadence article, the proper cadence differs between riders, even when road biking. However, it is generally accepted that maintaining a steady cadence of 90rpm is most efficient on the road.

At the other end of the spectrum (mountain biking,) there are many situations that call for different cadences. When mountain biking, you can disregard virtually everything I said about proper cadence for road biking!

In general, a slower cadence in a higher gear will offer more stability when negotiated rough, technical terrain. Having that extra resistance will make it much easier to go up, over, and/or around obstacles without losing momentum.

Let’s say you’re on very rutted terrain. You want a real big gear and slow cadence to put your weight on your feet, easing the pain on your butt. (The harder of a gear you’re pushing, the less your butt rests on the saddle.)

For technical hill climbs, you definitely want more torque and a lower cadence. This allows you to push yourself over obstacles and begin pedaling again, without spinning out.

If you’re cruising down dirt roads, go ahead and spin 90 rpm if you want to relax. But even then, I don’t always spin that fast. It’s partly due to the longer crank arms on my mountain bike, but partly because the high cadence just doesn’t feel right on the rough stuff. (Even on a regular dirt road, I like that torque.)

However, one thing I’ve heard from some of the local pros that also ride singlespeeds, is that they have successfully used a “singlespeed-esque strategy” while racing on geared bikes. (If you’ve never been on a singlespeed, it typically works like this: you stand and grind on the hills, then spin real easy on the flats.)

So using this strategy on a geared bike means you get in a fairly big gear and push really hard on the climbs. Then when you’re on the flats, you spin relatively easily to recover. The goal is to save your energy for the tough stuff, while conserving energy where extra effort doesn’t yield that much difference in speed (i.e. going hard on a hill can really put a gap on your competition, while spinning moderately on the flats is almost as fast as pushing really hard on the flats.)

What it boils down is that, in most cases, you’ll have a better experience if you push a bigger gear on your mountain bike instead of spinning at 90rpm.

Burpees are a very intense exercise – like squat thrusts, but harder! These will work your heart and lungs, muscular endurance, plus balance and coordination. Burpees are very efficient as well – you get a great full body workout in a short time.

Step 1: Start in a standing position with feet close together, arms at your sides.

Step 2: Now, squat down and put the palms of your hands just outside and in front of your feet.

Step 3: Support yourself with your hands, then thrust your feet backward so that you are in the traditional “up” portion for a standard pushup.

Step 4: Do a full pushup and when you return to the up position, immediately jump your feet up to your hands.

Step 5: As soon as you reach the squat position, jump up! (Instead of standing up, you do a squat jump at the end.)

This is one “rep”.

Now you’re back to the standing position and can start another rep.

Burpees video:

[video coming soon]

See more exercise guides in The Bodyweight Exercise Collection.