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05-11-20, 05:32 PM
#351
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Join Date: Sep 2005
Location: Greensboro, NC
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Bikes: Many Downtube Folders :)
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I don't think anything could be worse 
Thanks
Yan
Thanks
Yan
__________________
Designer of Downtube Folding Bike
Ph.D. Temple University ( Math )
Biked across the USA twice
Semi-active chess player ( two time Bahamas National Champion )
Sivananda ( Bahamas ) Trained Yoga instructor ( 2013 ) and ThetaHealer since 2013
Bicycle delivery worker for Jimmy John's. Delivering is the best workout I have ever had.
Designer of Downtube Folding Bike
Ph.D. Temple University ( Math )
Biked across the USA twice
Semi-active chess player ( two time Bahamas National Champion )
Sivananda ( Bahamas ) Trained Yoga instructor ( 2013 ) and ThetaHealer since 2013
Bicycle delivery worker for Jimmy John's. Delivering is the best workout I have ever had.
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05-12-20, 02:07 AM
#352
Senior Member
Join Date: Aug 2014
Location: UK
Posts: 742
Bikes: Dahon Jetstream p8 (sold), customized Dahon Helios x10, customzed Dahon Smooth Hound x11,customized Dahon Hammerhead 8.0 d7, Planet X Free Ranger (mullet setup 1x11), Planet X Giovanissimi 20 (1x9), Frog 52 (1x9) and Frog 48 1s
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I was just looking at the failure picture above and it seems there is very little if any penetration in the weld. To me, it looks like the bead of molten aluminium acted as a glue rather than a structural weld...
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05-12-20, 07:40 AM
#353
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That was the problem. The factories hired people with no welding experience and sold the bikes without testing the frames first. Being a welder there was no or little welding penetration of the metal parts. Roger
Last edited by rhenning; 05-12-20 at 01:04 PM.
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05-12-20, 11:38 AM
#354
Newbie
@rhenning
A bad welder can kill you (basically).
I fully agree with you.
When I obtained my certification as a car mechanic, welding was part of the comprehensive examination AND if one failed the welding test one failed ALL TESTS!
So, not everyone has a desire to fail like tern!
But anyway, I hear you, loud and clear.
I fully agree with you.
When I obtained my certification as a car mechanic, welding was part of the comprehensive examination AND if one failed the welding test one failed ALL TESTS!
So, not everyone has a desire to fail like tern!
But anyway, I hear you, loud and clear.
05-13-20, 10:43 PM
#355
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When dahon changed their dealer system in Europe, the European distributors that got pushed out were selling off their stock of naked dahon frames, but that was many years ago. You could ask some current dealers if they're willing to sell you frames.
