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


Go Back   > >

BMX Dirt, vert, flatland or street? Drop in the BMX forum to talk to other 20" riders around the world. What is the best BMX bicycle for you? Learn all about it here.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-05-05, 02:06 PM   #1
dain84
Retarded Monkey
Thread Starter
 
Join Date: Oct 2004
Location: klamath falls, oregon
Bikes: Specialized Vegas
Posts: 62
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
my chain always comes off!

I'm racing this year, and I have a major problem: my chain comes off whenever I go fast! It has come off 6 times in 3 weeks. It only has a half inch of slack, which is ideal for racing. How do I keep it from coming off? It's making me develop a fear of going fast.
dain84 is offline   Reply With Quote
Old 03-05-05, 02:45 PM   #2
bmichaelx
Senior Member
 
Join Date: Nov 2004
Location: Rosmeount Minnesota
Bikes: I own 1 custom bike, and i'm to lazy to list parts
Posts: 877
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Make sure that your sprocket isn't bent and that you chainring bolt and pinch bolts(on your crank, if you have a 3 piece) are all tight. If they're loose your sprocket could wobble side to side making it out of line with your chain.
bmichaelx is offline   Reply With Quote
Old 03-05-05, 03:10 PM   #3
easternbikes
Senior Member
 
Join Date: Jan 2005
Location: CT
Bikes: Raw Eastern Jane with Ody. cassette hub and chrome Ody Midway rim laced 4 cross with black Primo Spokes. A Black Tree Sprocket. I run 36/13 Not enough room to put my race bike in but its sick ask if you want me to tell you about it
Posts: 90
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
that sounds like to much slack for me
easternbikes is offline   Reply With Quote
Old 03-05-05, 10:01 PM   #4
CMcMahon
member
 
Join Date: Oct 2004
Location: San Jose, CA
Bikes: Solid AA
Posts: 4,751
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
One would assume that the answer for how to fix this problem would be obvious.
CMcMahon is offline   Reply With Quote
Old 03-05-05, 10:51 PM   #5
edmej123
Haro Monocoque
 
Join Date: Aug 2004
Location: North Highlands, CA
Bikes: Haro Monocoque, GT Vertigo.......
Posts: 382
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Tighten It!!!
edmej123 is offline   Reply With Quote
Old 03-05-05, 11:13 PM   #6
dain84
Retarded Monkey
Thread Starter
 
Join Date: Oct 2004
Location: klamath falls, oregon
Bikes: Specialized Vegas
Posts: 62
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I di but you see, on my bike when it is way tight it's hard to pedal. And I'm racing.
dain84 is offline   Reply With Quote
Old 03-05-05, 11:39 PM   #7
queensrider86
Senior Member
 
Join Date: Dec 2004
Location: jamaica queens nyc
Bikes: standard sta-r ox mark4
Posts: 1,734
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I would think it's gonna be hard to pedal with your chain tight.Isn't it better to have your chain tight
queensrider86 is offline   Reply With Quote
Old 03-05-05, 11:39 PM   #8
CMcMahon
member
 
Join Date: Oct 2004
Location: San Jose, CA
Bikes: Solid AA
Posts: 4,751
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It's not any harder to pedal with your chain tight; if anything, it's easier.
CMcMahon is offline   Reply With Quote
Old 03-05-05, 11:43 PM   #9
queensrider86
Senior Member
 
Join Date: Dec 2004
Location: jamaica queens nyc
Bikes: standard sta-r ox mark4
Posts: 1,734
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i never have my chain too tight, it messes me up with kickflips
queensrider86 is offline   Reply With Quote
Old 03-05-05, 11:44 PM   #10
CMcMahon
member
 
Join Date: Oct 2004
Location: San Jose, CA
Bikes: Solid AA
Posts: 4,751
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I should probably make a comment about how gay crankflips are, but I won't.
CMcMahon is offline   Reply With Quote
Old 03-05-05, 11:48 PM   #11
queensrider86
Senior Member
 
Join Date: Dec 2004
Location: jamaica queens nyc
Bikes: standard sta-r ox mark4
Posts: 1,734
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i dont really like kickflips if you're not doing anything else, but if you do it out of a grind or during a spin, it could be cool. these little ****** kids near my house do crankflips down stairs.
queensrider86 is offline   Reply With Quote
Old 03-06-05, 12:11 AM   #12
sewupnut
Senior Member
 
sewupnut's Avatar
 
Join Date: Jan 2005
Location: Mountains and Plains of Colorado
Bikes: Seven Odonata, Trek 950, 86 Stumpjumper, MASI 3V, Schwinn LeTour
Posts: 170
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Wow, I've not heard of this problem, at least not as severe. In more years of racing
than I care to admit, I can count on one hand the numbet of times I've dropped a chain - always when shifting from the small to the large chain ring to sprint over the top of a hill. That was with the old Sedis chains and friction shifters.

It's gotta be a bent chain ring or frame or something that is causing misalignment
of the drive train. When's that last time you replaced the chain or for that matter
the cog set? Does the bike shift smoothly otherwise?

sun

ps: With decent derailluers chain slack shouldn't be an issue here unless it's
really slack. Used to cut them down from 120 to 108 links for racing. Worked for all
but big - big combination.
sewupnut is offline   Reply With Quote
Old 03-06-05, 12:13 AM   #13
queensrider86
Senior Member
 
Join Date: Dec 2004
Location: jamaica queens nyc
Bikes: standard sta-r ox mark4
Posts: 1,734
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by sewupnut
Wow, I've not heard of this problem, at least not as severe. In more years of racing
than I care to admit, I can count on one hand the numbet of times I've dropped a chain - always when shifting from the small to the large chain ring to sprint over the top of a hill. That was with the old Sedis chains and friction shifters.

It's gotta be a bent chain ring or frame or something that is causing misalignment
of the drive train. When's that last time you replaced the chain or for that matter
the cog set? Does the bike shift smoothly otherwise?

sun

ps: With decent derailluers chain slack shouldn't be an issue here unless it's
really slack. Used to cut them down from 120 to 108 links for racing. Worked for all
but big - big combination.

this forum is about bmx, and i don't think he has to shift gears
queensrider86 is offline   Reply With Quote
Old 03-06-05, 12:14 AM   #14
CMcMahon
member
 
Join Date: Oct 2004
Location: San Jose, CA
Bikes: Solid AA
Posts: 4,751
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You realize that BMX bikes don't use derailluers or multiple gears, right?
CMcMahon is offline   Reply With Quote
Old 03-06-05, 12:18 AM   #15
sewupnut
Senior Member
 
sewupnut's Avatar
 
Join Date: Jan 2005
Location: Mountains and Plains of Colorado
Bikes: Seven Odonata, Trek 950, 86 Stumpjumper, MASI 3V, Schwinn LeTour
Posts: 170
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Gee,

Should've checked the forum. I'm old and rode (at race pace)about 70 miles in the mountains today. So I'm tired too.

sun
sewupnut is offline   Reply With Quote
Old 03-06-05, 09:26 AM   #16
haro_rider09
very very confused
 
haro_rider09's Avatar
 
Join Date: Aug 2004
Bikes: Haro F3, new 2005 DK Cincinnati
Posts: 445
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
have yall noticed that if someone from the mountain bike forums or the road bike forums comes and does something here and makes an honest mistake that they just take it and its all cool but if one of the bmx people makes a mistake and someone says something they bring up and attitude? dont wanna start nothing with no one but i just wanted to point it out
haro_rider09 is offline   Reply With Quote
Old 03-06-05, 09:41 AM   #17
dain84
Retarded Monkey
Thread Starter
 
Join Date: Oct 2004
Location: klamath falls, oregon
Bikes: Specialized Vegas
Posts: 62
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Beerman
It's not any harder to pedal with your chain tight; if anything, it's easier.
Well, on my bike it creates a ton of resistance. Plus it's easier to break completely when it's real tight. That's how I broke my last chain.
dain84 is offline   Reply With Quote
Old 03-06-05, 01:35 PM   #18
twahl
Tom (ex)Builder
 
twahl's Avatar
 
Join Date: Jul 2004
Location: Manassas, VA
Bikes: Specialized Allez
Posts: 2,814
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chaim should be fairly tight, 1/2" is more than I'd want racing. Is your chainring centered, meaning does it get looser/tighter depending on which point in the rotation the crank is?
__________________
Tom

"It hurts so good..."
twahl is offline   Reply With Quote
Old 03-06-05, 07:53 PM   #19
easternbikes
Senior Member
 
Join Date: Jan 2005
Location: CT
Bikes: Raw Eastern Jane with Ody. cassette hub and chrome Ody Midway rim laced 4 cross with black Primo Spokes. A Black Tree Sprocket. I run 36/13 Not enough room to put my race bike in but its sick ask if you want me to tell you about it
Posts: 90
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by dain84
Well, on my bike it creates a ton of resistance. Plus it's easier to break completely when it's real tight. That's how I broke my last chain.
get some lube or chain grease at a bike shop
easternbikes is offline   Reply With Quote
Old 03-06-05, 08:06 PM   #20
bmexican
bmxracer
 
Join Date: Oct 2004
Location: new egypt, some hick town in new jersey
Bikes: i own a gt ricochet hardtail mtb, a cannondale road, and full suspension mtb, a haro tr 2.1, a diamondback viper that i rebuilt painted and rebuilt with lighter parts, a brand new H&H race group race bike, and a eastern metalhead
Posts: 121
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
turn the bike over and make sure the chain is going in a straight line between the freewheel and chainwheel (no curving between em). this was haunting me all last season in fact. the countless hours i put into messing with that chain. oy. anyway straighten out the chain by adding spacers to the cranks (moving them out more, hopefully alighned the gears). make sure ur backwheel is tensioned straight (not pointing to one side). u may also try gettin a good chain like the ACS one, which won't flex as much. oh and btw, for racing you should be able to run close to an inch of chain play. hope that helps dain, as i said i had to put up with that chain crap too.
bmexican is offline   Reply With Quote
Old 03-07-05, 08:10 AM   #21
easternbikes
Senior Member
 
Join Date: Jan 2005
Location: CT
Bikes: Raw Eastern Jane with Ody. cassette hub and chrome Ody Midway rim laced 4 cross with black Primo Spokes. A Black Tree Sprocket. I run 36/13 Not enough room to put my race bike in but its sick ask if you want me to tell you about it
Posts: 90
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by bmexican
btw, for racing you should be able to run close to an inch of chain play.
i disagree with running a bike with that much slack in your chain
easternbikes is offline   Reply With Quote
Old 03-07-05, 08:25 AM   #22
KinetikBiker
Dig.
 
KinetikBiker's Avatar
 
Join Date: Mar 2005
Location: VA
Bikes: S&M, Nishiki
Posts: 6,168
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
get chain tensoiners.....or take links off your chain.... but if you race you want your chain just a little loose compaired to your street or dirt rig...
-taylor-
KinetikBiker 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 06:02 PM.