electronic Dura Ace

[Maxxxie]

What happens when the battery goes dead? Does the bike become unrideable (or, more to the point, a single speed)?

Max

[Bike Chick]

I wonder what would happen on a week long bike tour like RAGBRAII? We had problems trying to find a place to charge our Garmin bike computers every night. I can ride without my computer but what if my bike needs a charge and you don't have access to electricity?

[redrhodie]

I wonder what would happen on a week long bike tour like RAGBRAII? We had problems trying to find a place to charge our Garmin bike computers every night. I can ride without my computer but what if my bike needs a charge and you don't have access to electricity?

Maybe something like this would work, if you have access to a car? This charges batteries from the car's lighter:

http://www.technooutlet.com/wgn67.ht...=19-30891654-2

[wildeny]

How about DIYing the electronic shifting system on your bike for €50?



Check out these:
Homemade Electronic Shifting Bicycle From Germany - Part I
DIY Electronic Shifting Bicycle Part II

He (Norbert) even made his own bike.

[sundial]

What happens when the battery goes dead? Does the bike become unrideable (or, more to the point, a single speed)?

See that's what I am afraid of. Imagine it conking out on a long climb and you're MILES from home.

[BikeShopGirl]

The battery takes a while to die, between 600-1,000 miles is normal life of a battery charge. There are also charge lights. If you are really worried about it, the batteries are small, think old school Nokia cell phone battery. On a long ride, put it in your seatbag.

The derailleur also stays in the position it was in before it died. So if you are starting to see a red blinking light, keep it in an easier gear in case it dies.

>>>
I've only seen Di2 on a Cervelo P4 we built up in the shop. It was ubber cool and amazing to look at. The coolest thing was the self trimming feature the front derailleur has. When you are in that 3rd or 2nd to last cog, it self trims the front derailleur.

For pictures -----> http://arsbars.com/?s=di2

[Dogmama]

I just saw one in action at my Trek LBS. It is way cool. You can hear a small electronic whirring sound when it trues up the front sprocket. It would be great for my arthritic hands because it just takes a very light push. I asked him about battery life & he said "forever" - hmmm...that's a long time. After reading this thread, I'll have to grill him a tad more about that.

One of the cool things is that because it's electronic, you don't have a cable to stretch out. It's just a wire & with the Madone, it is inside of the frame.