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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 07-29-09, 02:29 PM   #1
jco1385
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So i got this new bike...

and this is what it looks like:




lol. i bought it for a really good price, now i just need some help getting her back on her wheels. anyone that can assist in the reconstruction of this bike? I know the basics, but all the little stuff has me lost.
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Old 07-29-09, 02:42 PM   #2
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Here is a starting point to get the front forks back on.

http://www.parktool.com/repair/readhowto.asp?id=127
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Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.
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Old 07-29-09, 02:51 PM   #3
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holy crap! i don't have any of those tools. i think i'll just wing it with the tools i have. the front fork should be pretty straight forward install. what should i use for lube on the bearings?
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Old 07-29-09, 02:58 PM   #4
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Use grease on everything you screw together, slide together, or on the bearings. You can use automotive grease, or whatever. I have a tube of Park grease that has lasted for years.

If you have a degree of mechanical aptitude, putting the parts where they look like they belong should get you pretty far. Don't force anything.

To get the grips onto the handlebar, if they don't slide on easily, squirt a bit of windex inside each one. It will lubricate the grips and eventually evaporate.

I'm sure you can find instructions online if you go part-by-part.
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Old 07-29-09, 03:00 PM   #5
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Lube for the bearings, for bolts, etc: Go to your local Lowes/Home Depot and get this (dirt cheap at $3/tub, and good for almost everything on the bike):
Attached Images
File Type: jpg 4683.jpg (20.4 KB, 25 views)
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Old 07-29-09, 03:00 PM   #6
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I use WD-40 to install my grips EXCEPT for ESI silicon grips -then I use windex
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Old 07-29-09, 03:02 PM   #7
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Also, the front fork is actually probably the trickiest part of what you've got to do, as you want to make sure the headset (top and bottom bearings + races, essentially) is tightened just enough to prevent play but loose enough so you don't excessively wear the bearings.
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Old 07-29-09, 03:03 PM   #8
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I can probably get it mostly together. The parts i'm worried about are: putting the grip shifters back together, getting the brakes installed correctly, getting the "gear changer" thing back on, and the adjustment of all the cables. And i plan to use automotive wheel bearing grease.
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Old 07-29-09, 03:08 PM   #9
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i still haven't figured out what this fabled "headset" is. is it the fork, the part that holds the bar, the frame... what the he!! is it? lol

maybe a need a bike anatomy chart or something
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Old 07-29-09, 03:11 PM   #10
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i still haven't figured out what this fabled "headset" is. is it the fork, the part that holds the bar, the frame... what the he!! is it? lol

maybe a need a bike anatomy chart or something
here is a chart of the headset at least.

http://upload.wikimedia.org/wikipedi...ed_view-en.png
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Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.
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Old 07-29-09, 03:12 PM   #11
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See if the shifters have a maker and model number on them and we might be able to dig up tech docs for you.
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Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.
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Old 07-29-09, 03:15 PM   #12
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The headset is essentially all the pieces that attach the fork/steering tube to the head tube of the frame. You've got bearing races: 1 usually press-fit onto steerer tube down at the fork's crown, 1 each usually press-fit into the bottom and top openings of the frame's head tube, and 1 not press-fit into anything on top. Bearings go in the bottom and top races. There may be additional spacers/washers/etc. Depending on the style of headset and steerer tube, the top may be threaded onto the steerer tube (a "threaded" headset) or just clamped onto the steerer tube (a "threadless" headset).
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Old 07-29-09, 03:17 PM   #13
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jco - at least post clear pictures of *each* individual part you are not sure of, whether for assembly, installation, or adjustment. That will help us help you!
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Old 07-29-09, 03:21 PM   #14
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ok, so the headset is (basically) everything that has to do with the fork bearings.

i'll get as much info on everything as i can. if i start putting stuff together i'll try and get build pics and keep this updated. should be a neat project.

as far as clear pictures... i have no digicam, so i have to use my 2mp phone
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Old 07-31-09, 09:35 AM   #15
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ok, i got a little bit of progress to show. i got the headset all cleaned up in some paint thinner. also got the races on the frame cleaned up. there was no pitting and everything cleaned up really nice. got it all greased up (can you use too much grease?) and put it together exactly like THIS. i also picked up an old school road bike (schwinn 754).

here are some pics of my progress: (sorry about the quality)







also got an "inventory" pic of what i have left that i'll probably need a bit of help with. all the springs and stuff i have no idea about. is this everything i should need? still have to install front/rear brakes/cables, grip shifters, shifter cables (need to buy), der., and wheels of course.



where can i find some decent/cheap shifter cables? i just realized i didnt get them with the bike. how much am i looking to spend on that? i have a bunch of other questions also, pertaining to wheels/tires/tubes, but i'll save those until i get this figured out. thanks in advance for your help.
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Old 07-31-09, 11:08 AM   #16
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ok, i'll bump this up with my tire/wheel questions.

i need new tires and tubes for this bike, so i went looking around to see what is available. i went to the shop across the street to see what they had. the only 24" tires they had were BMX tires. kinda knobby, but not exactly what i was hoping for. But at $10 each for name brand tires (Specialized) they are tempting. And the tubes there are $7. I left there and went to Wal-Mart and Target. they have roughly the same stuff as each other, and their tires are ~$12ea and come in a box, and are FLAT.

the question i have is: should i get the BMX (name brand) tires, or should i buy the wal-mart ones? also, what is the difference in tubes? some are like $3 and others are like $8. will i be good with the cheaper ones? i also am missing the band that covers the spokes on one of the rims. What is it called, and how much are they?

sorry for all the questions, but i want this to be built right and i haven't messed with bikes since i was much younger; and i dont remember having all these options. thanks in advance

these are what i found at target/wal-mart:



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Old 07-31-09, 12:12 PM   #17
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This might help you with the shifters.

http://bicycletutor.com/grip-shift-cable/
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Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.
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Old 07-31-09, 12:17 PM   #18
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brake help

http://www.5min.com/Video/How-to-Ins...x-Way-66769889

http://bicycletutor.com/adjust-v-brakes/
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Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.
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Old 07-31-09, 12:20 PM   #19
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The long rods with the levers are your quick release wheel skewers. The 4 cone shaped springs in the upper corner of the light floor tile on the right of your picture go with them.

Remove the nut from the threaded end of the skewer. Place a cone shaped spring on the rod, wide end first. Now insert the rod into the axle on either wheel. Now install another spring, narrow end first, towards the wheel and rethread the nut onto the threaded rod.

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Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.
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Old 07-31-09, 12:23 PM   #20
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I do not like slime filled tubes. The slime tends to settle at one place and make the tire "bounce" at higher speeds due to being imbalanced. You will be fine with either tire from either store. About the same quality.
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Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.
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Old 07-31-09, 12:27 PM   #21
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I'm pretty sure you want 26" tires and tubes, as that is a mountain bike. Unless Giant made a kids' Rincon. Probably any brand tire/tube combo will be fine at this point, unless you want to get fussy.
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Old 07-31-09, 12:35 PM   #22
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That bike is going to have 24" tires?
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Old 07-31-09, 12:45 PM   #23
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Quote:
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I use WD-40 to install my grips EXCEPT for ESI silicon grips -then I use windex
<pff> Water works just as well.
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Old 07-31-09, 12:47 PM   #24
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i actually don't know exactly how big the wheels are. lol. i just assumed 24" for some reason. it's a 23.5" frame, so it's no kiddie bike. how can i look at the rim and find out?

you guys are a huge help, by the way.

how about the shifter cables? how do i know what i need?
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Old 07-31-09, 12:59 PM   #25
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The four spiral springs you know about now. To the left of them are (front?) brake arm springs.

To the right of them are two crank bolts? How are the crank arms being held on now? (Above them crank dust caps?)

Below the crank bolts the four stainless steel bolts hold the four brake arms to the frame. Each should have a washer.

The two big round rings in the bottom row (not metal) are probably spacers that go between the sections of the shifters. I don't know what the big grey round ring is - part of the headset? part of the shifters?

The chrome thing with a cam lever between the brake arms is the seat post clamp.

No you can't use too much grease.
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