Velowander

Mon 11/27: Physics, Bike maint, Jen goes to Jeff's 'anniversary'

I skipped the 08:00 Physics 7a today, but I went to the 7b at 09:00. At the a good portion of it was interested; Prof. Irfan discussed experimental methods as well as applications of magnetic fields and materials, as well as the 3 fundamental types of magnetic materials: diamagnetism, paramagnetism, and ferromagnetism.

After class finished, I had the usual $4.50 3-item lunch special at the Little Mandarin in Downtown Berkeley, and then I met Jen at the Missing Link bicycle shop.

I tightened the spokes on the front wheel (of the Specialized Sequoia touring bike) & Jen took off the front fender. It took us a while to get the headset apart, but we bought new bearings and got it greased and put back together. Although Jen thinks her her handlebars are too low, we didn't replace the stem because it would have been quite a bit of work to take the brakes, shifters, and handlebar tape off the stem. Her 6 speed freewheel is a very narrow Suntour model where is no longer available. Replacing it with a Shimano 14-28T freewheel ($14, with tax part only) will involve adjusting the spoke tension and adding spacers to allow additional clearance on the wheel's right side for the increased thickness of the new freewheel. We made an appointment with the Missing Link service dept to install the new freewheel (about $30 labor).

Tomorrow we will go to the Tinker's Workshop. We already have the replacement Shimano freewheel, so we may be able to install it ourselves at the bike clinic (14:00 - 18:00).

Jen left for the evening to go to Jeff's 'birthday' party. He was her friend and former boyfriend who committed suicide in May of this year.

Labels: Bike Mechanical, Physics

posted by David @ 4:54 PM