Chain keeps busting

Rockjaw

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Mar 19, 2014
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Location
Deltona florida
I sold a bike to someone and they wanted a 30 day warranty ..big mistake..they are 1 hour and 20 min from me..i delivered the bike.

I learned a lesson to not warranty the bikes..but i still have to get this buyer out of my way.

The Bike is a Huffy Cranbrook and I tried the factory sprocket ..i couldnt get it to work. SO I put a 48 tooth Maniac sprocket on it.. the bike rode fine for me..but when she used it..the chain snapped off..bent the back fender and flattend the back tire ..so I brought her a new bike...same bike...and 30 miles of ride time..the same thing happend.

I have examined these bikes closely..I am thinking that the sprocket was installed too far out
 
are you using an idler or just breaking these chains until they fit?
if the latter, chain might be too tight. Try using an idler OR adjusting the chain out a tad with a half link.

As for the sprocket being too far out, how much clearance is there between your chainstay and the chain? Is there a chance the chain is hitting other metal things when she's riding flat out?
 
the thing that usually snaps a chain is the teeth of the sprocket picking up a side plate of the chain rather than fitting down in the gap of the link - usually this happens at the rear, but could happen at the front if the chain is too far out of line - make sure the tensioner is aligned in/out to exactly feed the chain onto the teeth of the rear sprocket such that each tooth hits the gap in the link AND is so centered that the chain can be pushed with the fingers a bit BOTH in and out - I often grind the teeth of the back sprocket very sharp so there is no flat surface to pick up a side plate on - also, be sure the chain is not too tight in some spot of the full rotation
 
is she a bit on the heavy side? the extra load might account for you not being able to reproduce it. if that's the case try a #41 chain from tractor supply, I was breaking chains left and right before I installed that one.
 
I sold a bike to someone and they wanted a 30 day warranty

Forgive me for laughing my backside off, but you did "WHAT" - a 30 day warranty on a motorised bicycle with a chinese engine - forgive me for the tears rolling down my face :ROFLMAO:

..big mistake..

A monumental mistake of religious magnitude.

I learned a lesson to not warranty the bikes..

That's it, just sell someone a bike who believes it will be reliable and just turn your back on them in future - smells like a whole lot of personal integrity to me.

but i still have to get this buyer out of my way.

You are screwed - you will never be able to get that buyer out of your way, because you sold a bike that is (by anecdotal evidence) inherently unreliable.

but when she used it..

It's an OMG moment - you sold a motorised bicycle to a woman - what a comedy of errors we have here, and let me guess, she thought that the bike was going to be reliable. Hang on a second. Give me a chance to fall over myself laughing.

the chain snapped off..bent the back fender and flattend the back tire ..

If i were you, i'd be getting out of town real quick, because it won't be long before you get a letter in the mail from her lawyer - no amount of incentive could put me in your shoes - this post just keeps on giving.

so I brought her a new bike...

If she hasn't begun throwing the full process of the legal system at you, i'd be buying her another bike, and for gods sake don't install an engine, then give her $1,000 for her trouble.

and 30 miles of ride time..the same thing happened.

Is this a joke - you must be pulling my leg - i mean, seriously, is this a joke?

I have examined these bikes closely..I am thinking that the sprocket was installed too far out

If you examined the bike from the start, it wouldn't have happened in the first place.


My bike has been brought up to a level where it is surprisingly reliable, but there is no way; absolutely no way that i would sell my bike to a woman, because i could not give a guarantee of reliability and secondly, a woman is not prepared to spend her life chasing and fixing electrical and mechanical problems, not to mention the daily routine of maintenance; which tends to be a dirty process.

So let me recap: you sold a motorised bicycle to a woman, which must have been a real wise choice - - - - oh please, give me some air - i can't stop laughing at your attempts to """get the buyer to go away"""
 
Fabian thats some funny stuff..yeah i deserve to be picked on.
.i know right..ive done some stupid things in my life..but this was by far the dumbest..im just a beginner at selling these bikes though..see..i figured because she was so far away that if something happend...she wouldnt want to drive the bike to me because of the distance..but when she called me complaining i felt bad lol.

yes i use an idler ..i was told today from a builder that i could have the chain link clip on backwards ...but im ptiing it on the way the paper that the kit comes with says..ill post it in a different thread soon

(john doe) the sprocket is about an inch from the end
 
im just a beginner at selling these bikes

For crying out loud, this comedy of errors continues with unabated fortitude. Basically you're making mention that you have no real idea what you are doing or the issues that can (and do) go wrong with these engines & drivetrain mechanism, upon which you palm off such a problematic method off transport to a person that has even less mechanical and technical aptitude than yourself; then expecting the whole process to turn out like walking through the serenity of a lavender field.


.i know right..ive done some stupid things in my life..but this was by far the dumbest..

I would assess the situation as far worse than foolish, but much closer to reckless negligence, because a woman has absolutely no idea what she is getting herself into and the inherit level of risk to her life, based on the fact that wholesale ineptitude is providing service to the mechanically illiterate - a recipe for disaster.


i figured because she was so far away that if something happened...she wouldn't want to drive the bike to me because of the distance..

Oh my lord, that most certainly smells like a whole lot of personal integrity to me; virtually on par with a politician handing out promises with his hand on his heart.


when she called me complaining

Holy Jehoshaphat, this thread just keeps on giving and then some.
I am not surprised that she was complaining. I would have turned up with my lawyer by my side for putting my life at great risk.


i felt bad

I would have felt terrified at the potential consequences.


i was told today from a builder that i could have the chain link clip on backwards ...

Crikey, it just doesn't end.
Before even assembling the chain on the bike i would have been absolutely sure which way the joiner link & clip was to be positioned, let alone handing the bike over to a person that has absolutely no idea how the various parts should be assembled.


This has now gone past a comedy of errors, because a persons life was put at risk.
 
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