Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-10-05, 04:08 PM   #1
Roasted
huffy owns
Thread Starter
 
Join Date: Apr 2005
Location: Pennsylvania.
Bikes: 2004 Giant Boulder SE hardtail, 2008 Diamondback Response Sport hardtail, 2008 KHS XC 204 full sus mt bike, 2010 GT GTR Series 3 road bike.
Posts: 569
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Many questions regarding rim straightening and brake systems. Please read, I'm lost..

Okay, where to start...

So I noticed a small kink in my rim. When I held down the front brake once every rotation I would feel the brakes grab tighter, and that was due to the slight bend it had at one point. So I started tweaking the spokes a little bit to get that bend out. Well, I got it out. I probably spent a good hour or so just carefully tweaking the spokes and whatnot. Somehow, I did everything backwards at first, so the spokes were soooo loose. I guess it works in reverse from the way I was looking at the spokes (righty tighty lefty loosey is what I kept telling myself, turns out the way I was sitting made it the opposite).

Anyway, I accidently loosened all of the spokes. So, what else is there to do? Tighten them all back up THEN start tweaking the minor bends out. So I did, and I got the rim completely straight, not a slight bend in it PERIOD. The spokes weren't too tight, but weren't too loose.

Well, I noticed something a little off with my front brakes. I never noticed this before but I'm not sure. Anyway, here's a picture.

http://i2.photobucket.com/albums/y36...ikepicture.jpg

Notice the two red arrows? They are pointing at the black brake "cranks" if you will. When I hold down the brake so the front tire is completely stopped, the one black brake "crank" isn't symmetrical versus the other. This particular one sticks out a little bit more. Though they still stop the bike and stop the rim from spinning, I wasn't sure why one stuck out a bit more.

Here's what I thought: I thought maybe when I re-tightened everything with my rim that maybe one side is a lot tighter than the other, and although there's an imbalance between the right and left side being tight, perhaps I was still able to achieve the state of having NO bends in the rim, despite the fact the hub was off center due to one side being tighter than the other. Is this possible? I know it sounds like a bunch of garble, but it is incredibly hard to explain in words what I'm trying to get at.

I hope this explains it, and I look forward to some input.
Roasted is offline   Reply With Quote
Old 06-10-05, 04:16 PM   #2
Raiyn
I drink your MILKSHAKE
 
Raiyn's Avatar
 
Join Date: Jul 2002
Location: St. Petersburg, FL
Bikes: 2003 Specialized Rockhopper FSR Comp, 1999 Specialized Hardrock Comp FS, 1971 Schwinn Varsity
Posts: 15,061
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Roasted



Here's what I thought: I thought maybe when I re-tightened everything with my rim that maybe one side is a lot tighter than the other, and although there's an imbalance between the right and left side being tight, perhaps I was still able to achieve the state of having NO bends in the rim, despite the fact the hub was off center due to one side being tighter than the other. Is this possible? I know it sounds like a bunch of garble, but it is incredibly hard to explain in words what I'm trying to get at.

I hope this explains it, and I look forward to some input.
I presume you don't have a truing stand? It looks to me that the wheel is indeed off center caused by your fiddling.
Take it to the shop and have them true your wheel, it's something that can be fixed
__________________
Raiyn is offline   Reply With Quote
Old 06-10-05, 05:39 PM   #3
Roasted
huffy owns
Thread Starter
 
Join Date: Apr 2005
Location: Pennsylvania.
Bikes: 2004 Giant Boulder SE hardtail, 2008 Diamondback Response Sport hardtail, 2008 KHS XC 204 full sus mt bike, 2010 GT GTR Series 3 road bike.
Posts: 569
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Raiyn
I presume you don't have a truing stand? It looks to me that the wheel is indeed off center caused by your fiddling.
Take it to the shop and have them true your wheel, it's something that can be fixed
How much would this cost? I asked them to do that when I took it in for my 2 month free checkup, and they didn't even touch the damn thing. Although they were helpful with the sale of my bike, I now doubt their ability to do what needs done since it wasn't done right the first time.

My bike tire appears to be 110% COMPLETELY straight. I just don't see how one brake "crank" sticks out a tad bit than the other one does.

I'll take some pictures tomorrow.

edit - That picture is an old one I took RIGHT when I got the bike. Don't base your judgment on that picture, I just posted that picture so you guys could tell what I meant by the "brake cranks." I'm unsure of their regular name.
Roasted is offline   Reply With Quote
Old 06-10-05, 06:48 PM   #4
Roasted
huffy owns
Thread Starter
 
Join Date: Apr 2005
Location: Pennsylvania.
Bikes: 2004 Giant Boulder SE hardtail, 2008 Diamondback Response Sport hardtail, 2008 KHS XC 204 full sus mt bike, 2010 GT GTR Series 3 road bike.
Posts: 569
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Okay, how about this.

I'll bite my bottom lip and go to the bike shop. I looked on ebay at these truing stands and theyre mostly from like 50-100 dollars.

Going to a bike shop to have this done can't be TOO expensive... how much does it run on average?

Also, do I just take the bike wheel, or the entire bike?
Roasted is offline   Reply With Quote
Old 06-10-05, 07:09 PM   #5
nirvanaschains
Senior Member
 
Join Date: Apr 2005
Location: Chicago, IL
Bikes: 2004 GT-Idrive 3.0
Posts: 144
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My guess would be around $30, if its not to messed up.
My shop charges 50-80 for a complete wheel build. Thats building it from scratch, putting the spokes in the hub, then through the rim, tightening, truing, dishing.
nirvanaschains is offline   Reply With Quote
Old 06-10-05, 07:17 PM   #6
Dirtbike
Giggity giggity!
 
Dirtbike's Avatar
 
Join Date: Nov 2004
Location: Danville, Ca
Bikes: Yeti DJ Custom build. X.9, Marzocchi, RaceFace, Gamut, DT, Truvativ, Michelin, Hope.
Posts: 1,800
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you do decide to get a truing stand and fix it yourself, it is a great skill to have.

The problem is that your wheel is dished over to one side. You can fix this on your bike by using two zipties tied to the fork next to the rim, and measure the correct placement of the rim. Just loosen the spokes one side and tighten the other, evenly, and it should come out pretty close. Do the adjustments in small increments (like 1/2 turns). Make sure you measure correctly and get it as close as you can.
Dirtbike is offline   Reply With Quote
Old 06-10-05, 07:23 PM   #7
phantomcow2
la vache fantôme
 
phantomcow2's Avatar
 
Join Date: Aug 2004
Location: NH
Bikes:
Posts: 6,266
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
my shop charges 15 dollars per wheel for truing if you bring in just the wheels ready to true and all. 20 per wheel if you bring it in on the bike. You dont have to do it very often so its not that bad
__________________
C://dos
C://dos.run
run.dos.run
phantomcow2 is offline   Reply With Quote
Old 06-10-05, 08:26 PM   #8
Roasted
huffy owns
Thread Starter
 
Join Date: Apr 2005
Location: Pennsylvania.
Bikes: 2004 Giant Boulder SE hardtail, 2008 Diamondback Response Sport hardtail, 2008 KHS XC 204 full sus mt bike, 2010 GT GTR Series 3 road bike.
Posts: 569
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Dirtbike
If you do decide to get a truing stand and fix it yourself, it is a great skill to have.

The problem is that your wheel is dished over to one side. You can fix this on your bike by using two zipties tied to the fork next to the rim, and measure the correct placement of the rim. Just loosen the spokes one side and tighten the other, evenly, and it should come out pretty close. Do the adjustments in small increments (like 1/2 turns). Make sure you measure correctly and get it as close as you can.
Dang, that's a great idea. I'm gonna do that first thing tomorrow. I'll make sure the zipties are identicle, and that they are of proper size (aka not too big or too small). There's a nice hardware store 2 miles away loaded with that kind of crap, cause I use a lot of zipties to hold my car audio wires together. I suppose I could easily get 2 slightly bigger zipties, measure them to the exact 1/16th of an inch, and use them even though I cut them down, couldn't I?

Dirtbike, I'd GLADLY buy a truing stand... but to make a long story short, I'm trying to save as much money as I can right now because I have a nice vacation coming up and I'd rather not go to a very very nice beach and have 20 dollars to spend for the entire week. HOWEVER, I am taking this bike down with me (from pennsylvania to south carolina) so I definitely want it in tip top shape when I go down there.

Thanks for that idea about the zip ties. In my opinion I have a pretty keen eye and plenty of time to spend fixing this wheel tomorrow, so I'm sure I'll get it DAMN near perfect.
Roasted is offline   Reply With Quote
Old 06-10-05, 08:48 PM   #9
alcahueteria
Senior Member
 
alcahueteria's Avatar
 
Join Date: Mar 2005
Location: Philadelphia
Bikes: Specialized AWOL, Soma Juice
Posts: 1,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My shop charges between 12 and 18, and it's normally cheaper if you just bring the wheel. Oh and where are you going in SC?
alcahueteria is offline   Reply With Quote
Old 06-10-05, 10:20 PM   #10
Roasted
huffy owns
Thread Starter
 
Join Date: Apr 2005
Location: Pennsylvania.
Bikes: 2004 Giant Boulder SE hardtail, 2008 Diamondback Response Sport hardtail, 2008 KHS XC 204 full sus mt bike, 2010 GT GTR Series 3 road bike.
Posts: 569
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by alcahueteria
My shop charges between 12 and 18, and it's normally cheaper if you just bring the wheel. Oh and where are you going in SC?
My mountain bike has the quick release thing, I don't know if that's real common in bikes now-a-days or what, this is the first bike I had that had it. For those of you unsure, cause I know sometimes my names for things within the mountain biking world are completely off, I have a little lever, flip it up, and unscrew the other side, and just pop the cable off the brakes so they flip back and the wheel is off. So it's easy as hell to get my wheel off.

Anyway, I'm going to Myrtle Beach. It's going to be pretty damn cool. I'm going to buy my girlfriend a bike because she needs a very light duty bike while she's in physical therapy. Long story short: She was a die hard cross country runner in high school, and her pushing herself too far ended up rubbing away the cartilage within her hip socket that her leg bone rubbed against. So she's in physical therapy and needs a bike, so I'm going to buy her one next week and going to put this bike rack to use for my car. Sorry to ramble, just kind of excited. That's why I'm so pushy on getting my bike PERFECT before we go, because I won't exactly be able to take my tool set down and spend the afternoon tweaking my bike.

But I think I'll just try the wire tie thing first, I'm sure it'll work as long as I do it right. I'll call the bike shop just for a price quote in case I'm not too sure about the wire tie thing after I try it out. Either way, another day or so and it'll be 100% straight.
Roasted is offline   Reply With Quote
Old 06-11-05, 04:19 AM   #11
DMN
Middle-ground Communist
 
DMN's Avatar
 
Join Date: Nov 2004
Location: Isle of Wight - UK
Bikes:
Posts: 484
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
This site:

http://www.parktool.com/repair_help/FAQindex.shtml

Will help you gt your bike in tip top condition.
DMN is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 03:06 PM.