Harrisburg Bicycle Club

Week 1: Flat Repair, Road Repairs

MAINTENANCE CLINIC

What do I do?

Be Prepared.

What’s in the bag?

• Spare Tube• Patch Kit (with fresh glue)• Tire Levers• Tools for YOUR bike

Don’t forget to carry a pump or some other means of re-inflating your tire!

Tubes – What type do you have?

Presta Shrader

It depends on the rim!

Presta Shrader

Patch Kit – why glue?

Tire Lever or Tire Iron?

Other tools to carry

To Pump or Not to Pump?

How do I change the tire?

Step 1: Shift the bike

Front Gear Rear Gear

How do I change the tire?

Step 2: Release the brakes

Road Mountain/Hybrid

How do I change the tire?

Step 3: Open the Quick Release

How do I change the tire?

Step 4: Remove the Wheel

Rear Wheel

(shown with bike upside down)

How do I change the tire?

Step 5a: Remove the tire from the rim

With Tire Levers With Bare Hands

How do I change the tire?

Step 5b: Remove the tire from the rim

With Tire Levers With Bare Hands

How do I change the tire?

Step 5c: Remove the tire from the rim

How do I change the tire?

Step 6: Inspect the tire for the cause

How do I change the tire?

Step 7: Find the hole

What if you can’t find the hole?

You brought a spare tube?

How do I change the tire?

Step 8: Scuff and patch the Tube

Apply glue over hole location

Once glue DRIES, remove foil and apply

patch

How do I change the tire?

Step 9: Replace the tube & tire

Take care not to pinch the tube between the tire and rim…

…or between the tire iron and rim

How do I change the tire?

Step 10: Re-inflate the tire

Note: label aligned with valve

How do I change the tire?

Step 11: Put tire back on bike

Why carry a spare tube? Why carry a patch kit?

Ken Kifer: Zen and the Art of Fixing a Flat Tirehttp://www.kenkifer.com/bikepages/humor/flattire.htm

You are riding on a picturesque country road on your bicycle with the wind in your etc., and you are about to reach a Zen-like state of rapture when you start noticing your rear wheel. It seems to be bumping on the ground. Oh no, not again!

You stop your bike, remove the tire, and open the patch kit. Now, all you have to do is to find the hole.

Unfortunately, the hole is not so large. You can't see a hole, and you can't feel air escaping. You start pumping more and more air into the tube, hoping that the hole will reveal itself, but to no avail. Then you put the tube and tire back on and pump it full; the tire quickly deflates.

Hours later, after a soaking rain, you reach your home. You vow that you will never make that mistake again.

What do I do when things go wrong?

Our List of “Frequently

Found Problems”

Wheel on WRONG

Brakes Out of Whack

Brake QR Not Closed

Chain Off or On Wrong

Quick Release WRONG!

BEFORE YOU RIDE: Check Your Bike

• ABC Quick Check:– Air (does my tire have air?)– Brakes (did I reconnect the brakes?)– Chain (is the chain on properly)– Quick Release (is the QR installed correctly?)

• Helmet On?– This is the best chance for your bike to crash

Time for YOU to try

Instructors are standing by!