Week 1 Clinic
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Transcript of Week 1 Clinic
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!