Headset clearance
#1
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Thread Starter
Headset clearance
My Dahon Vybe has the standard front mounting holes (3 hole pattern ), but only the upper and middle are threaded.
My question is if I pull the front headset apart, is there enough clearance inside the tube to slide a nut in so I have something to screw into?
My question is if I pull the front headset apart, is there enough clearance inside the tube to slide a nut in so I have something to screw into?
#2
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I picked up a tap and thread set, 5m thread, and am going to attempt to create threads in the pre-existing hole.
This is my first "ding" concerning this Dahon product because there is no excuse to only thread two out of three holes.
This seems to be a better option than ripping the headset apart.
This is my first "ding" concerning this Dahon product because there is no excuse to only thread two out of three holes.
This seems to be a better option than ripping the headset apart.
#3
Member
Perhaps the hole was missed and not tapped in the factory?
#4
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That's all I can think of. I threaded the hole with mixed results. The screw would not go in without a lot of force, it's almost all the way in and is at a slight angle, but holding tight. Not perfect but it's the bottom screw below the Brompton block, so hopefully it suffers less stress than the top hole.
#5
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Clearly that was a mistake at the factory.
Thanks
Yan
Thanks
Yan
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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.
#6
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And... why would three threaded holes be needed anyway? That would seem to be a strange design, as two bolts would provide attachment and resistance to rotation.
I couldn't find any images of the attachment mechanism on the Dahon site, so I could be wrong.
Steve
EDIT: If the unthreaded hole is on one end, it might be for a peg so the attachment can only be installed one way. Just thinkin' out loud...
#7
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The middle hole was just holding the cover in. The 2 holes used to attached accessories are holes 1 and 3. The adapter fit perfectly over them. I added the Brompton block and a buddy loaned me a bag to test. It has a little bit of side to side wiggle but that could be the fit with the adapter. Will add some weight and see how it holds up on the way back from work. It is odd at best that Dahon would provide the holes needed to add attachments and only thread one of them.
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they are not really designed for the Brompton stuff ... hence the middle hole doesn't do anything. Having said that the bikes I inspected had threads in all 3 holes
thor
thor