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Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

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Old 04-21-17, 05:07 AM   #26
sweeks
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Originally Posted by tmesis View Post
The OP bought his problematic Tern bike in December 2016. That's less than six months ago.
I'm not in the bicycle industry, so I don't know about shipping and distribution issues. But it wouldn't surprise me if some of those bikes that had the frame defect were not all sold within 6 months of manufacture.
To my knowledge, there have been no failures associated with the new design. My only source of information is the Tern Forum, but that's where most (If not all) of the failures were reported. The OP could (should, maybe?) have checked the serial number registry to see if that particular frame was affected by the recall.
Steve
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Old 04-21-17, 05:14 AM   #27
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Originally Posted by tmesis View Post
The OP bought his problematic Tern bike in December 2016. That's less than six months ago.
Depends on when the frame was manufactured, not when it was bought.
Steve
(Oops... sort of a duplicate post. Sorry!)
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Old 04-21-17, 06:09 AM   #28
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Originally Posted by jur View Post
I am guessing from what I see in the pics, that a gusset is welded as a butt weld against the hinge face plate, after which the front tube is welded to the hinge face plate. The gusset is flush with a slot in the main tube. A weld is run around the gap between the gusset and the frame slot.

...[snip]...
Ok thank you for explaining in detail.
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Old 04-21-17, 06:22 AM   #29
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Originally Posted by sweeks View Post
That's right. All the reported frame failures were at the front of the frame joint.
Steve
Yup. The Tern frame seems to have the front portion ripped off the hinges. I guess, mid frame is where the max bending occurs. Putting a gusset plate on the bottom tube will strengthen the pulling apart due to bending tension.

Adding gusset plate is, design change. The recall with certain serial numbers implied bad welding for limited runs at the factory.
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Old 04-21-17, 10:00 AM   #30
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Originally Posted by sweeks View Post
Depends on when the frame was manufactured, not when it was bought.
Steve
(Oops... sort of a duplicate post. Sorry!)
If what you're saying is the case, Tern bikes with these catastrophic problems should have been recalled and disposed of, out of the reach of consumers.
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Old 04-21-17, 10:26 AM   #31
ThorUSA
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Originally Posted by tmesis View Post
If what you're saying is the case, Tern bikes with these catastrophic problems should have been recalled and disposed of, out of the reach of consumers.

and they have


in this case back to the OP the pins failed, most likely due to loose clamp and allowing the frame to move and put undue force of the pins.
But its all good as Tern has replaced the whole frame at no cost ( actually almost twice as the color choice was not available at the time for a speedy solution ) the new frame in correct color will be forthcoming, if it hasn't yet.


Abu
as far as correspondence with a singular Tern Importer, and lack of speedy and possibly not expected positive answers, or lack theroff altogether. One can hardly blame Tern for that. Did you contact Tern directly and let them know that there would be an improvement possible ?
Otherwise contact me and I will relay the info to the peeps in charge.


Thanks Thor
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Old 04-21-17, 09:03 PM   #32
tcs
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in this case back to the OP the pins failed, most likely due to loose clamp and allowing the frame to move and put undue force of the pins.
And since the OP owned this bike just 3 (winter-time) months, I'm sure you and/or Mr. Bickerton have subsequently contacted the factory concerning their clamp mechanism assembly process.
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Old 04-24-17, 05:41 AM   #33
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If anyone needs to have confirmation about a specific bike or frame, then the first thing to do is to ask the dealer who supplied the bike, as they should be aware of any issues.... or at least they can check through their supplying national distributor.

If that isn't enough contact Tern directly through the global website ( ternbicycles.com ), and the enquiry will be routed to people who can give a definitive answer.

Lastly, and primarily for the UK, I am happy to be contacted as a last resort.... and will always do my best to help get answers and action where required.

mark . bickerton at tern bicycles . com No spaces and use an @ sign, of course!

Mark
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