psperle

Greetings to all,

Ive recently acquired a shiny new red Schwinn meridian 7 speed trike. After a week of attempted riding i've had an issue with the secondary drive chain coming off the chain ring. After several attempts to adjust tension and double checking the alignment of the gears same issue continues. upon close scrutiny of the front secondary drive gear i can see that it is moving front to back when the hub is spinning. this indicates to me that the gear was pressed off center when it was made. any suggestions oh a fix for this. i cannot return it to the store as this was a gift from a non profit to my son so there is no receipt. this definitely is a brand new bike. I have reached out to " Schwinn support" but without proof of purchase there's no warranty work to be had.

Please advise.

Thanks P.

Iride01 

Since you posted this in the thread you started in the General sub-forum you really ought to phrase something differenty and at least address this post you made that was prior to making this new thread. Otherwise this is just blantant double posting and frowned on if not covered in the forum rules somewhere.

Schwinn Meridian 7speed trike Chain issues

No big foul though. You are still very noob. Hopefully it's not dementia from old age and you forgot the other.
I'll probably take a thrashing for being so rude! <grin>

You are still welcome here at BF!

FBinNY 

It's extremely unlikely that the sprocket was made this way. If that were the case, it would have to slip past too many people including the folks who assembled the trike and anyone who rode it before you.

My first hunch is that it's not squarely on the shaft, which would be an easy fix. It is possible that it got bent at some point, more likely the axle is bent.

You need to properly diagnose the cause, which isn't something that can be done remotely.

If this is beyond you, it's time to let a bike shop mechanic take a look.

psperle

We wnt back to the non profit, opened a new box and removed the secondary drive sub frame and replaced it on the bike. The off center gear is still on the primary drive hub and still rotating off center but after 5 + miles of riding over the weekend, the chain hasn't come off once. I will be monitoring every nut and bolt after every other ride to maintain fastenerability. Yes I said fastenerability.
so far so good. Thanks for all the suggestions.