Derailleurs are the components of your bike that control the movement of the chain to the sprockets, allowing you to shift gears. This is especially important when riding on hills or in mountainous terrain, as having the right gear can make or break your ride. SRAM is a popular brand of derailleur, and adjusting your SRAM rear derailleur is the first step in making sure you have the right gear for the terrain you’re riding.
What You Need to Adjust a SRAM Rear Derailleur
Before you start adjusting your SRAM rear derailleur, you’ll need a few things. You’ll need a 4 mm Allen wrench, a 5 mm Allen wrench, a Phillips screwdriver, and a small flathead screwdriver. You’ll also need an adjustable wrench and a pair of pliers.
Step 1: Inspect the Rear Derailleur
Before you start making adjustments, you should inspect your SRAM rear derailleur to make sure it’s in good working condition. Look for any signs of wear or damage, and make sure the derailleur is properly aligned with the sprockets.
Step 2: Adjust the Cable Tension
The cable tension is what controls the movement of the derailleur, so it’s important to get this right. Use the 4 mm Allen wrench to loosen the tension bolt on the rear derailleur. This will allow you to adjust the tension so that the derailleur moves smoothly.
Step 3: Adjust the Limit Screws
The limit screws are what keep the derailleur from overshifting or undershifting. To adjust them, you’ll need to loosen the 5 mm Allen bolt on the rear derailleur. Then, you can use the Phillips screwdriver to adjust the limit screws until they are set correctly.
Step 4: Adjust the B-Screw
The B-screw is what controls the distance between the derailleur and the sprockets. To adjust this, use the small flathead screwdriver to loosen the B-screw. Then, you can use the adjustable wrench to adjust the distance until it is correct.
Step 5: Test the Derailleur
Once you’ve finished adjusting your SRAM rear derailleur, you should test it to make sure it’s working properly. Start by shifting through the gears. If the derailleur is not shifting smoothly, then you may need to adjust the tension or limit screws. You should also check to make sure the derailleur is not overshifting or undershifting. If it is, then you may need to adjust the B-screw.
Frequently Asked Questions
What tools do I need to adjust a SRAM rear derailleur?
You will need a 4 mm Allen wrench, a 5 mm Allen wrench, a Phillips screwdriver, a small flathead screwdriver, an adjustable wrench, and a pair of pliers.
How do I adjust the cable tension?
To adjust the cable tension, use the 4 mm Allen wrench to loosen the tension bolt on the rear derailleur. Then, adjust the tension so that the derailleur moves smoothly.
How do I adjust the limit screws?
To adjust the limit screws, use the 5 mm Allen bolt to loosen them. Then, use the Phillips screwdriver to adjust the limit screws until they are set correctly.
How do I adjust the B-screw?
To adjust the B-screw, use the small flathead screwdriver to loosen it. Then, use the adjustable wrench to adjust the distance until it is correct.
How do I know if my SRAM rear derailleur is adjusted correctly?
Once you’ve finished adjusting your SRAM rear derailleur, you should test it to make sure it’s working properly. Start by shifting through the gears. If the derailleur is not shifting smoothly, then you may need to adjust the tension or limit screws. You should also check to make sure the derailleur is not overshifting or undershifting. If it is, then you may need to adjust the B-screw.
What happens if I overshift or undershift my derailleur?
If you overshift or undershift your derailleur, it can cause the chain to slip or even break. This can be very dangerous, so it’s important to make sure your derailleur is adjusted correctly.
What happens if I don’t adjust my derailleur correctly?
If you don’t adjust your derailleur correctly, it can cause the chain to slip or even break. This can be very dangerous, so it’s important to make sure your derailleur is adjusted correctly.
Can I adjust my SRAM rear derailleur myself?
Yes, you can adjust your SRAM rear derailleur yourself as long as you have the right tools and know how to do it properly. It’s important to follow the instructions carefully and make sure the derailleur is adjusted correctly before riding.
How often should I adjust my SRAM rear derailleur?
It’s a good idea to check and adjust your SRAM rear derailleur regularly. If you find that it’s not shifting smoothly or is overshifting or undershifting, then it’s time to make adjustments.
Do I need to use special tools to adjust my SRAM rear derailleur?
Yes, you will need to use a 4 mm Allen wrench, a 5 mm Allen wrench, a Phillips screwdriver, a small flathead screwdriver, an adjustable wrench, and a pair of pliers.
What happens if I don’t adjust my SRAM rear derailleur correctly?
If you don’t adjust your SRAM rear derailleur correctly, it can cause the chain to slip or even break. This can be very dangerous, so it’s important to make sure your derailleur is adjusted correctly.