Bike parts needed for BM project

Sync · Post by **Sync** » Wed Dec 27, 2006 3:10 pm

I'm building an electric art car project in the SF bay area and am looking for some bike parts to get welded/cut ect for it. Looking for two matched mtn bike frames or front forks. Project will create small transport using stepper motors, electric wheelchair and bike parts. Two track hubs would also be usefull. So, if you have a pile of old parts and can spare some to be seen reborn on the playa as something newer and stranger, let me know. Perhaps we can trade some cutting and welding. Thanks.

unjonharley · Post by **unjonharley** » Wed Dec 27, 2006 5:01 pm

I pick up bikes from Goodwill for cheap. Some as low as $3.00. A good moution bike could run 15 or so.. I go to the back of the pile. When I get home I cut the parts I need out and throw the rest.. Any one know where a cheap crank puller can be found ?

timburly · Post by **timburly** » Thu Dec 28, 2006 10:18 am

use a bigger hammer :-p

Teo del Fuego · Post by **Teo del Fuego** » Thu Dec 28, 2006 10:26 am

Crank puller for a bicycle? Im confused.....reverse-threaded retaining nut, washer, and reverse-threaded bearing race and your done (after removing reverse-threaded left pedal), n'est pas?

And what is a "two track" hub?

unjonharley · Post by **unjonharley** » Thu Dec 28, 2006 10:32 am

Teo del Fuego wrote:Crank puller for a bicycle? Im confused.....reverse-threaded retaining nut, washer, and reverse-threaded bearing race and your done (after removing reverse-threaded left pedal), n'est pas?

And what is a "two track" hub?

Newer cheap bikes cranks are a S O B to get out without a puller. Had to take then to the bike shop. The sports stores want $25 and the bike shop wants my first born +.

Sync · Post by **Sync** » Thu Dec 28, 2006 12:55 pm

Two as in two of them, not as in two tracks. A track hub is used in closed banked course racing. A common hub has a rachett inside that allows the wheel to be driven by the chain in one direction, but freewheel in the other. A track hub has no freewheel action, it moves the wheel in either direction depending solely on the direction the chain rotates, the hub dosen't have the ability to coast.

What I'm trying to create has a direct chain loop from the stepping motors to the wheels. The motors turn in either direction and act as the brakes as well. To do this, which also allows the thing to turn on it's own axis, the wheels can not have a freewheeling action. Thus using a pair of track hubs mounted to moutain bike tires instead of racing tires would be ideal.

Good Will is a good idea. Went there last night, but didn't find what I needed yet. Thanks.

Bob · Post by **Bob** » Thu Dec 28, 2006 7:13 pm

The thrift shop at 17th & Mission always has bikes of some sort.