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


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 10-29-12, 12:41 AM   #1
Afrothunderkat
Newbie
Thread Starter
 
Afrothunderkat's Avatar
 
Join Date: Oct 2012
Bikes: 2007 Trek 3700, 2007 DK General Lee
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hey all! Keep snaping axles

First post, site looks awesome.

Well, I have a 2006 Trek 3700. I keep snapping/bending the rear quick release axles. I ride dirtbikes quite often, so I enjoy rough trails HOWEVER my trek's cheapness is killing me. Is there a more rugged bike out there that I could get on a budget that has solid axles that can take more of a beating? Craigslist special? Or... can I replace my axles with solid ones? I know my bike is all show no go, cheap parts bottom of the line but there has to be another option or something I can do... local bike shop recommended a $2200 freestyle/downhill hybrid. SCAM.


Riding style: I do dirt road riding, very little tar ridding, lots of woods, single track, a few jumps here and there nothing serious.



Thanks!
Afrothunderkat is offline   Reply With Quote
Old 10-29-12, 12:59 AM   #2
Bill Kapaun
Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
Posts: 9,496
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 125 Post(s)
Dol you have a Free Wheel or free Hub?
If Free Wheel, you'll either bend or break them without much effort.

http://sheldonbrown.com/free-k7.html
Bill Kapaun is offline   Reply With Quote
Old 10-29-12, 01:12 AM   #3
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 22,229
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1153 Post(s)
I suspect freewheel hub..

Freehubs have wide axle support.. if you are breaking those, you have problems beyond the scope of talk, here..

get to a Bike Shop.


Freewheel? rebuild around a Freewheel hub From California made
Phil Wood, in San Jose.or Pauls in Chico,, both sealed bearing hubs have very strong
axles..
I used a Phil FW hub on my Touring bike on many Bike tours with full camp load.


though on the cheap budget interim a solid axle and nuts are made matching the thread of QR ones
cant ride with you to know how hard you are on stuff.
you may be OK or trash those too..

Last edited by fietsbob; 10-29-12 at 02:27 PM.
fietsbob is offline   Reply With Quote
Old 10-29-12, 01:14 AM   #4
cale
Senior Member
 
cale's Avatar
 
Join Date: Oct 2004
Location: Seattle
Bikes: Kuota Ksano. Litespeed T5 gravel - brilliant!
Posts: 3,250
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by Afrothunderkat View Post
First post, site looks awesome.

Well, I have a 2006 Trek 3700. I keep snapping/bending the rear quick release axles. I ride dirtbikes quite often, so I enjoy rough trails HOWEVER my trek's cheapness is killing me. Is there a more rugged bike out there that I could get on a budget that has solid axles that can take more of a beating? Craigslist special? Or... can I replace my axles with solid ones? I know my bike is all show no go, cheap parts bottom of the line but there has to be another option or something I can do... local bike shop recommended a $2200 freestyle/downhill hybrid. SCAM.


Riding style: I do dirt road riding, very little tar ridding, lots of woods, single track, a few jumps here and there nothing serious.



Thanks!
Sounds like you'd benefit from a full suspension bike. Either that or work on your riding technique so you aren't landing those jumps so hard. I'd go with the second suggestion and see if it works for you. You could end up breaking rear axles on a full suspension bike for all I know.
cale is offline   Reply With Quote
Old 10-29-12, 01:18 AM   #5
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 22,229
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1153 Post(s)
Quote:
You could end up breaking rear axles on a full suspension bike for all I know.
well a cheap bike that only looks like it has suspension , there may be some truth ..
fietsbob is offline   Reply With Quote
Old 10-29-12, 02:47 AM   #6
jimc101
Senior Member
 
Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
Bikes:
Posts: 4,884
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 54 Post(s)
Quote:
Originally Posted by Afrothunderkat View Post
HOWEVER my trek's cheapness is killing me.
The 3700 is a very cheap bike, no point in saying that it's Treks cheapness, a good AM MTB rear wheel will be the same price range as your complete bike.
jimc101 is offline   Reply With Quote
Old 10-29-12, 03:52 AM   #7
MichaelW
Senior Member
 
Join Date: Feb 2001
Location: England
Bikes:
Posts: 12,936
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Do the Formula hubs have a freehub with the axle fully supported by bearings at each end?
Some cartridge bearing hubs place the driveside bearing inboard of the freehub, leaving a lot of axle hanging out unsupported, ready to bend and break.
All Shimano hubs have a fully supported axle with bearings close to the ends. They solved the issue of bent axles for tourists in the 1980s. I don't think you need to go all the way to a Phil Woods hub, any low end Shimano (eg Altus FH-RM30) will be fine.
MichaelW is offline   Reply With Quote
Old 10-29-12, 05:14 AM   #8
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Bikes: Several, mostly not name brands.
Posts: 16,797
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 224 Post(s)
Quote:
Originally Posted by Afrothunderkat View Post
Well, I have a 2006 Trek 3700. I keep snapping/bending the rear quick release axles.
Quote:
Originally Posted by Bill Kapaun View Post
Dol you have a Free Wheel or free Hub?
If Free Wheel, you'll either bend or break them without much effort.

http://sheldonbrown.com/free-k7.html
A 2006 model bike is unlikely to have a freewheel. OP should check dropout alignment to start.
JohnDThompson is online now   Reply With Quote
Old 10-29-12, 06:14 AM   #9
bradtx
Senior Member
 
Join Date: Jun 2010
Location: Pearland, Texas
Bikes: Cannondale, Trek, Raleigh, Santana
Posts: 6,870
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 112 Post(s)
Afrothunderkat, Welcome to the forum.

Your 3700 is spec'd like my sister's Trek Skye. A really good and proven frame, but down market components that aren't really up to the task of rough mountain biking. You can have your rear wheel built with a Shimano LX or XT hub or look on the internet for a replacement wheel.

Learning how to "ride light" is also important, basically use your legs as shock absorbers when you land. What is your weight?

Brad
bradtx is offline   Reply With Quote
Old 10-29-12, 07:12 AM   #10
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 29,124
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 181 Post(s)
Quote:
Originally Posted by JohnDThompson View Post
A 2006 model bike is unlikely to have a freewheel. OP should check dropout alignment to start.
I don't know if that's right. A lot of lowest line bikes, even from well regarded makers, still use freewheels. It could indeed have a freewheel.
HillRider is offline   Reply With Quote
Old 10-29-12, 07:47 AM   #11
Dan Burkhart 
Senior member
 
Dan Burkhart's Avatar
 
Join Date: Oct 2004
Location: Oakville Ontario
Bikes:
Posts: 6,065
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 61 Post(s)
Quote:
Originally Posted by HillRider View Post
I don't know if that's right. A lot of lowest line bikes, even from well regarded makers, still use freewheels. It could indeed have a freewheel.
Indeed. freewheels abound at the low end of the market.
__________________
Gearhubs demystified and other cool stuff.


WANTED: Dead or broken gearhubs for failure analysis.

Like the shop
Dan Burkhart is online now   Reply With Quote
Old 10-29-12, 09:14 AM   #12
oldbobcat
Senior Member
 
oldbobcat's Avatar
 
Join Date: Jul 2005
Location: Boulder County, CO
Bikes: '79 Gios, '80 Masi, '06 Felt, early '60s Frejus
Posts: 2,926
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Quote:
Originally Posted by JohnDThompson View Post
A 2006 model bike is unlikely to have a freewheel. OP should check dropout alignment to start.
The 2006, 2007, 2008, 2009, 2010, 2011, and 2012 models of the 3700 all have 7-speed freewheels. To get a cassette you need to get the 8-speed 3900.

The 3700 is a fine bike for commuting and light off-road use. That is, cinder paths, fire roads, and maybe some slow and easy singletrack.
oldbobcat is offline   Reply With Quote
Old 10-29-12, 09:39 AM   #13
bobotech
Senior Member
 
Join Date: Jan 2012
Location: Spokane, WA
Bikes: Specialized Sequoia Elite/Motobecane Fantom Cross Team Ti/'85 Trek 520
Posts: 2,253
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
That bike is NOT a mountain bike in the sense that you are using it. Like others have said, it is designed for light offroad use like smooth gravel, pavement, streets that might not be paved all that smooth, that kind of thing. If you are doing jumps and rock climbs or downhill runs or anything remotely like that, you will kill the bike.

I also suspect that it has a freewheel and freewheels can hardly handle the stress of an abused bike that is being used for tasks far above its abilities. Freewheel wheels are fine for light duty use or smooth commuting but not for hard core mountain biking, otherwise you WILL break/bend axles.
bobotech is offline   Reply With Quote
Old 10-29-12, 09:56 AM   #14
Afrothunderkat
Newbie
Thread Starter
 
Afrothunderkat's Avatar
 
Join Date: Oct 2012
Bikes: 2007 Trek 3700, 2007 DK General Lee
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thank you all for the responses, seems like I need a new bike as I purchased the 3700 when I didn't know much about quality components.

What would be a good budget bike? Common bike that I can find on craigslist?
Afrothunderkat is offline   Reply With Quote
Old 10-29-12, 10:51 AM   #15
bobotech
Senior Member
 
Join Date: Jan 2012
Location: Spokane, WA
Bikes: Specialized Sequoia Elite/Motobecane Fantom Cross Team Ti/'85 Trek 520
Posts: 2,253
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Quote:
Originally Posted by Afrothunderkat View Post
Thank you all for the responses, seems like I need a new bike as I purchased the 3700 when I didn't know much about quality components.

What would be a good budget bike? Common bike that I can find on craigslist?
The problem is that the riding you are doing/describing doesn't bode well with cheap bikes. HOwever if you want to go the CL way, I would look for an older high end rigid/hardtail mountain bike from the '90s. Something like a Specialized Rockhopper/Stumpjumper. Those were pretty good strong mountain bikes that have nice sturdy chromoly steel frames and should have fairly decent components. If you wanted to buy new, for the riding you are describing, you would not want to spend much less than 1000-1500. Anything less costly but new will probably not be up to the task of jumping, rough off roading, etc. You mentioned your riding and said "nothing serious" but your riding does sound pretty serious.
bobotech is offline   Reply With Quote
Old 10-29-12, 11:50 AM   #16
IthaDan 
Senior Member
 
IthaDan's Avatar
 
Join Date: Jan 2012
Location: Ithaca, NY
Bikes: Click on the #YOLO
Posts: 4,874
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Quote:
Originally Posted by Afrothunderkat View Post
Thank you all for the responses, seems like I need a new bike as I purchased the 3700 when I didn't know much about quality components.

What would be a good budget bike? Common bike that I can find on craigslist?
Where are you? What's your local craigslist? How tall are you?

I really get a kick out of looking at craigslists across the country.
__________________

Shimano : Click :: Campy :: Snap :: SRAM : Bang
IthaDan is offline   Reply With Quote
Old 10-29-12, 12:08 PM   #17
garage sale GT
Banned
 
Join Date: May 2009
Bikes:
Posts: 2,078
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The online retailers sometimes have entry level wheelsets with Shimano freehubs and decent rims for a good price. I got a set from Performance for $119 with 525 hubs and Rhynolite rims.

If the 3700 has a freewheel hub you might need to upgrade your rear shifter to an 8 or 9 speed and buy a cassette and new chain.

Or, you could just find the chrome moly steel solid axles that Niagara has and use one of those. It would still need periodic replacement. I personally feel a slight preload on the cone adjustment helps them last but some others seem to disagree.
garage sale GT is offline   Reply With Quote
Old 10-29-12, 12:42 PM   #18
ThermionicScott 
Gratuitous glib and snark
 
ThermionicScott's Avatar
 
Join Date: Aug 2011
Location: CID
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers)
Posts: 14,107
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 418 Post(s)
I would just try to find a used 7-speed cassette MTB rear wheel. If that's the only part that's breaking, you don't need a whole new bike. At least yet.
__________________
Quote:
Originally Posted by chandltp View Post
There's no such thing as too far.. just lack of time
RUSA #7498

Last edited by ThermionicScott; 10-29-12 at 12:56 PM. Reason: clarity
ThermionicScott is offline   Reply With Quote
Old 10-29-12, 01:21 PM   #19
LarDasse74
Guest
 
Join Date: Jul 2008
Location: Grid Reference, SK
Bikes: I never learned to ride a bike. It is my deepest shame.
Posts: 3,769
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ThermionicScott View Post
I would just try to find a used 7-speed cassette MTB rear wheel. If that's the only part of your bike that's breaking, you don't need a whole new one. At least yet.
+1. A new replacement wheel with an 8 speed cassette body (will need a spacer to make a 7 speed cassette fit) can cost less than $100. Since the OP has only indicated that he has problems with the rear axle, and not snapping forks and handlebars and seatposts, I would think the rear axle is the only part of the bike that is truly insufficient for his use.
LarDasse74 is offline   Reply With Quote
Old 10-29-12, 01:53 PM   #20
LarDasse74
Guest
 
Join Date: Jul 2008
Location: Grid Reference, SK
Bikes: I never learned to ride a bike. It is my deepest shame.
Posts: 3,769
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by fietsbob View Post
Just that in a 126 frame, there is extra axle width of 130 or 135 as standards now..
Cold-set, spreading the frame , makes wheel replacements with each puncture repair less of a PIA.

and dish is less.. wider is better..
Bike is from 2006. Very very unlikely to be 126mm spacing in that frame. Probably 135 mm.
LarDasse74 is offline   Reply With Quote
Old 10-29-12, 02:33 PM   #21
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 22,229
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1153 Post(s)
Quote:
What would be a good budget bike? Common bike that I can find on craigslist?
for hammering on Off Road, get a hardtail MTB which will usually come with a front suspension fork..

good bike will be starting, new at $500 at your Trek dealer,
since you have one that sold what you have.

Dual suspension, double that $..
fietsbob is offline   Reply With Quote
Old 10-29-12, 02:44 PM   #22
garage sale GT
Banned
 
Join Date: May 2009
Bikes:
Posts: 2,078
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ThermionicScott View Post
I would just try to find a used 7-speed cassette MTB rear wheel. If that's the only part that's breaking, you don't need a whole new bike. At least yet.
Or you could get a modern wheel with an 8/9/10 freehub and put a 7 speed cassette and spacer on it.
garage sale GT is offline   Reply With Quote
Old 10-29-12, 02:53 PM   #23
LesterOfPuppets
cowboy, steel horse, etc
 
LesterOfPuppets's Avatar
 
Join Date: Sep 2008
Location: Rock Springs, WY
Bikes: My War
Posts: 27,217
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 577 Post(s)
I'm with thermionic and gsgt, just get yourself a nice wheel, or even wheelset +1 spacer + 7-speed1 cassette. Rim brake wheels continue to get rarer but are still around. I bend/snap solid or QR axles on 7-spd FW setups all the time, the rest of my almost-as-lowend Trek 4000 was up to the task, tho.

Last edited by LesterOfPuppets; 10-29-12 at 02:57 PM.
LesterOfPuppets is offline   Reply With Quote
Old 10-29-12, 03:01 PM   #24
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 22,229
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1153 Post(s)
Having friction shifting and a newer cassette wheel
the 8th cog instead of the spacer filling in the width is another option..

sort it out when you take the bike in to the Bike Shop to have the dropout alignment checked.
fietsbob is offline   Reply With Quote
Old 10-29-12, 03:06 PM   #25
RubeRad
Keepin it Wheel
 
RubeRad's Avatar
 
Join Date: Aug 2011
Location: San Diego
Bikes: Surly CrossCheck, Moto Fantom29 ProSL hardtail
Posts: 5,715
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
I agree with the above; your cheapest option is to spend maybe $100-200 on a rear wheel and 7-speed cassette (or 8-speed cassette, replacing one cog with a spacer, or just leave it on and know that one of your cogs never gets used!) Others at this forum are better qualified than me to talk about 7/8-speed cassette/derailleur spacing/compatibility.

For a CL option I would take a look at mountain bikes on your local CL for $200 and up. You'll want to aim in maybe the $400-600 range, or you can probably even do well in the $200-400 ballpark, but looking at the wider range will help you get familiar with what is better or worse than your target. Post some proposed CL links here, somebody will drop in, take a peek, and give you an opinion.

But I totally agree, $2200 for a brand new downhill bike? If you have $2200 to throw away, fine. But there are so many ads on CL that start with "I bought this really awesome bike and thought I was going to ride it a lot, but...". Don't be that guy, take advantage of that guy. Don't pay retail for a new bike from a store, pay half or less for a "new" bike off CL.
RubeRad 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 01:13 PM.