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Old 06-21-08, 01:42 PM   #1
ponderz
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Dahon Kenitix Neutron Front Hub problem

Update and correction.

The 2.3cm bearing tube is forced fit to the end cap not the bearing. There is a stopper inside the hub body which should prevent the bearing tube from slide out of the end cap. However, there is a gap of 0.7 to 0.8cm which allowing this sliding. Design error?? So what I do is cut a piece of tin foil of 0.7cm, rap around the skewer. Do this for both sides.

I will update in a few months if this does the trick.

Ponder

Quote:
The 2.3cm bearing tube which have a force fit on the cartridge bearing started to slide into the hub body after about 1 year of use. When this happens the aluminum end cap rub the hub body. I have discovered it early enough so I just use a vise to press it back. A week later, the tube got loose again. I reversed the end ( for a titter fit) and press it back.

There is a tube inside the hub body that should keep this from happening but it is not working. The tub is too large (I think). It should be the same size.

Possible fix that I will try next is use a puncher to enlarge the bearing tube. This should give it a tighter fit and keep it from sliding.

I found on the web one site which sells the kenitix neutron hub, http://airportshop.com/bikes/neutron_front_hub.html

It cost 94 USD. I am tempted to use an older regular bearing hub. I don't mind a little more weigh but more reliable hub. Does any one have one for sale? 74 to 75mm OLD, 28H, black preferred.

It is possible that I do wheelly and often land harshly to cause it to fail early?

Ponder

Last edited by ponderz; 07-03-08 at 10:50 PM. Reason: For information
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Old 06-22-08, 02:51 AM   #2
OrangeClownBike
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i've had trouble with the front hub on my hammerhead. It was fine for about 9months then started to fail. I had the bearing replaced by my LBS and it lasted 5 days! The LBS replaced the bearing again and i managed 1 day before it started clicking. At this point i'd lost faith in the hub as it seemed designed for light weight before longevity. So the solution was a brompton (7) hub laced into new rim. Weighs 100g more then the stock hub, spokes and rims. So far running well.
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Old 12-23-11, 10:12 PM   #3
ponderz
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Update. After 4 years or about 4000km of riding. The fix that I did was good. The wheel has no play. My dahon helios is great.
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