Replacing chain on carrer vengeance 2011

Gibbo3771

Hi,

Bike noob here xD

I was taking my bike, ironically to the shop to get the gears adjusted as its been sitting in storage for 3 month due to terrible weather and after cleaning it all, oil/lube etc etc, getting all the way to the bike shop and then him turning around and saying its a £30 service fee for gears....

I walked away and cycled half way home and bam, gear slips, chain comes off and gets stuck in the damn wee bit under the pedal after about 30 minutes of "gentle" pulling I get pissed and yank it...leaving it all buckled and out of alignment.

So long story short, to remove a chain on a mountain bike.

Does this involved wheel off, take jockey wheel outer bit off (no idea on the name) and then simple taking the chain off.

Or is there a bunch of stuff I NEED to avoid doing?

sorry for stupid question :S

Gibbo3771

Done some more googling and still cant figure it out :S

Most tutorials talk about this "master link" which does not exist on my chain lol

help?

386ka

You need at least a chain tool, it disconnects the chain by pushing out a rivet. There is no other way to remove a chain without a quick link.

cooldad

And get a new one with a masterlink - KMC are good.

The Rookie

Your current chain goes through the rear triangle, so getting it out the mech by taking jockey wheels out won't help....chain tool (about £5 if you shop around) and new chain with quicklink (KMC), adjust length (see parktools although would hope KMC chains come with instructions, SRAM and Shimano do) using tool again and fit, or most LBS will fit for nought if you buy the chain from them.

Gibbo3771

Yeah well I got a new chain with a master link, SRAM 850 it says on the box.

I didnt feel like spending £10 on a tool to remove a broken chain , so i took a blowtorch to it and snapped it with pliers xD

New chain is on.

However having a lot of issues so far

Will post screenshots of wtf is happening lol

Greer_

Have fun when your chain snaps on the trail!! That is unless you carry your blow torch with you you are best investing in a chain tool though but I wouldn't say its the most important tool I have ... wait until you see the right deal and buy one then - there's usually are some going quite cheap

Chunkers1980

Is the bike 8 spd? You generally need achain tool to fit a new chain as you need to remove links to get to the correct size.

delcol

lmao did not want to get a chain tool so used a blowtorch.

how did you remove the excess chain links on your new chain when you sized it to fit the bike... ?

please tell us you did size the chain to the appropriate size.....

and how old is the rest of the drive train as the other bits cassette and chainrings could of worn to the old chain and may need to be replaced to.. if they have worn this could cause the new chain to jump and skip..

386ka

delcol wrote:

please tell us you did size the chain to the appropriate size.....

Nope, I guess he didn't.

Gibbo3771 wrote:

However having a lot of issues so far

Will post screenshots of wtf is happening lol

Some things just can't take any shortcuts

Gibbo3771

The new chain has a masterlink, I did measure them side by side but i sorta mangled a few links on the old chain so there was easily a 10mm difference between the 2.

Yes it is an 8 speed, no i never removed links

That probably explains why when I go to the lowest gear possible the rear bit literally drops over the other bit. Hard to explain! bike is in shed atm so cant take pictures 0_0.

The bike is only around 5 month old, I dont see any wear on the cassette and rest of the setup besides cosmetic damage due to gravel and shit.

Im guessing I fker'ed up here and should resized it rather than guessing its just my old chain being mangled.

This is the new chain

http://www.sram.com/sram/mountain/products/sram-powerchain-850

Here is the exact bike

http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_810619_langId_-1_categoryId_165499#tab2

So if my old chain is a million miles away on a garbage barge, how does one get the right size

Chunkers1980

Follow decol's link above. You need the tool!

delcol

not the blow torch..

this simple equation should give you the correct chain length,
chainlength = 1+0.25*(f+r) +2* c2+{0.796 *(f-r)}2

or read the instructions that came with the chain.. or click here

Greer_

delcol wrote:

chainlength = 1+0.25*(f+r) +2* c2+{0.796 *(f-r)}2 [/url]

Wouldn't go anywhere with out shame it doesn't need differentiated .... I told my maths teachers what we did would never come in useful in real life!

The Rookie

Asks advice, ignores advice as thinks he knows better, has issues, comes back and gets same advice, goes and does it properly.....should have that in a sticky the number of times we get this.

Frankly Gibbo, your a donut and I feel sorry for your bike.

Gibbo3771

The Beginner wrote:

Asks advice, ignores advice as thinks he knows better, has issues, comes back and gets same advice, goes and does it properly.....should have that in a sticky the number of times we get this.

Frankly Gibbo, your a donut and I feel sorry for your bike.

Forum troll?

I actually asked for advice while I was figuring it out myself, happened to do it wrong. Guess you do everything flawlessly first time right?

I feel sorry for your ego.

But however I do appreciate every ones help.

Chunkers1980

No troll, just disappointment over not following advise that was all there.

Don't short cut on tools, they are an investment and should be thought of in terms of the savings they give you in the future. Their marginal cost is ever reducing.

The Rookie

A troll with 5K posts, don't ne daft.....oops sorry, dafter!

The Beginner wrote:

Your current chain goes through the rear triangle, so getting it out the mech by taking jockey wheels out won't help....chain tool (about £5 if you shop around) and new chain with quicklink (KMC), adjust length (see parktools although would hope KMC chains come with instructions, SRAM and Shimano do) using tool again and fit, or most LBS will fit for nought if you buy the chain from them.

I type all that in FOR YOU, then YOU ignore it, how do you think that makes ME feel?

Gibbo3771

Chunkers1980 wrote:

No troll, just disappointment over not following advise that was all there.

Don't short cut on tools, they are an investment and should be thought of in terms of the savings they give you in the future. Their marginal cost is ever reducing.

Ok noted, going out to buy a chain tool today.

The Beginner wrote:

A troll with 5K posts, don't ne daft.....oops sorry, dafter!

The Beginner wrote:

Your current chain goes through the rear triangle, so getting it out the mech by taking jockey wheels out won't help....chain tool (about £5 if you shop around) and new chain with quicklink (KMC), adjust length (see parktools although would hope KMC chains come with instructions, SRAM and Shimano do) using tool again and fit, or most LBS will fit for nought if you buy the chain from them.

I type all that in FOR YOU, then YOU ignore it, how do you think that makes ME feel?

Yep sorry but your post came across as a bit cheeky is all. I never ignored your advice, just never read it properly and missed the important part lol.

andrewjoseph

Gibbo, just say sorry and learn from it. Saying advice given 'sounded cheeky but you never read it properly' makes you sound a tad silly.