How Elevation Impacts Motorcycle Performance- Colorado Springs

There’s no shortage of fun, challenging motorcycle rides in Colorado Springs. But before you take off into the mountains to chase that Rocky Mountain high, make sure you know how elevation affects motorcycle performance. If you’re not careful, your motorcycle might stall or crash, ruining your day and leading to severe injuries.

Elevation and Engines: The Basics

There are many factors affecting how elevation impacts motorcycle performance. Air pressure drops as elevation increases, which means the air contains less oxygen. Your motorcycle engine needs oxygen to burn fuel and create power. So, the engine produces less power when oxygen levels fall.

You may notice these effects more acutely if your motorcycle has a carburetor. Carbureted engines rely on a fixed air-fuel mixture, and at high altitudes, there may be too little air in the mix.

By contrast, fuel-injected motorcycles adjust more easily because their onboard systems automatically respond to changes in air density. Even so, it’s typical to feel a slower throttle response and reduced horsepower at altitude with a fuel-injected engine.

Elevation also affects engine cooling and fuel efficiency. Your bike may run warmer and use fuel differently than it does at lower altitudes.

Motorcycle Engine Performance at 6,000 Feet

Colorado Springs sits at about 6,000 feet above sea level, and surrounding areas have even higher elevations. That means the effects of altitude are particularly tough on motorcycle engines.

At 6,000 feet, your engine takes in less oxygen on every intake stroke because the air holds fewer molecules per cubic foot. That drop cuts power because your engine burns less fuel per cycle. Standard atmosphere data put air density at roughly 84 percent of sea level at this elevation. Therefore, motorcycle engines lose about 16 percent of their potential output at this altitude.

So, if your bike makes 80 horsepower at sea level, you should expect about 67 horsepower in Colorado Springs (80 × 0.84 = 67.2). Torque follows the same trend, so 55 lb-ft becomes about 46 lb-ft (55 × 0.84 = 46.2).

You will feel that loss most during passing, uphill climbs, and quick merges. Hot afternoons and storms can also raise “density altitude,” which can push the power drop even farther. If you want a more detailed explanation, Cycle World wrote about this issue a few years ago when discussing a ride up Pikes Peak.

Tips for Riding Motorcycles at High Altitudes

Because the high altitude and thinner atmosphere in Colorado Springs affect motorcycle performance, you must take proper precautions. Follow these tips to have a safe, smooth ride as you explore the Rocky Mountains on your motorcycle:

• Adjust your expectations for acceleration and passing distances, since thinner air limits engine output. The thinner air also reduces how quickly your bike responds to throttle input, so keep that in mind as well.
• Shift earlier and keep your engine in a comfortable power range. This practice is critical on long climbs, as high revs can strain performance.
• Watch your speed on downhill stretches. Reduced engine braking at elevation can cause your bike to accelerate faster than expected.
• Give yourself extra space around other vehicles. You want to give yourself sufficient maneuvering space, since motorcycles and cars may take longer to respond during merges and lane changes.
• Stay alert to changing weather, as sudden temperature drops, strong winds, and fast-moving storms are more common at higher elevations.
• Watch your bike’s temperature and fuel consumption rate, especially during slow traffic or warm afternoons. Thinner air limits natural cooling, and you don’t want your engine to overheat.
• Take frequent breaks to stay focused. The lower oxygen percentage at high altitudes can affect your concentration, reaction times, and physical comfort, particularly during longer rides.