Author Topic: Nankai 9T driver  (Read 4381 times)

Offline Mr News Bot

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Nankai 9T driver
« on: August 29, 2009, 09:08:31 PM »
Nankai came up with a new 9T driver that fits with 1/2" x 3/32" thin chain. Running a thin chain allows you to save some weight (50 to 100gr depending on your setting).

The driver is available for the K-Type freecoaster model now (both alloy and steel shell), it includes a 9t driver and dust cover, a cone for 9t driver and 14 cr-mo balls of 5/32".

Offline mare

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Re: Nankai 9T driver
« Reply #1 on: August 29, 2009, 11:25:35 PM »
finaly. it was about time....

Offline Flatism®

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Re: Nankai 9T driver
« Reply #2 on: August 30, 2009, 05:06:39 AM »
^you know that!
 ;D
Flat-ism

Offline Hugo @ Portugal

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Re: Nankai 9T driver
« Reply #3 on: August 30, 2009, 11:35:15 AM »
50 to 100gr? WOW!!




Offline mare

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Re: Nankai 9T driver
« Reply #4 on: August 31, 2009, 12:51:38 PM »
100grams here and there and we have 0,5 kg hehe

Offline flatlandpercy

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Re: Nankai 9T driver
« Reply #5 on: September 02, 2009, 06:55:12 AM »
some people have a ti 3/32" chain so they've been waiting
for this so they could run that crazy chain,m boyyyyyy

Offline 87master

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Re: Nankai 9T driver
« Reply #6 on: September 03, 2009, 10:38:09 PM »
Bit of a stupid question, but whats the difference between the 2 chain sizes, it it just width?

If so, could you not just thin down and sprocket/driver to fit, or are tooth placements different?

Offline slimp

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Re: Nankai 9T driver
« Reply #7 on: September 03, 2009, 11:00:50 PM »
i have heard of people filing down the teeth but it is difficult to get it to work because you would have to file down a perfect amount on either side of each tooth. Pardon my ignorance but what is a k-type nankai fc? Will this driver work on my technolite (the one with the chinese letters on it)?

Offline 87master

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Re: Nankai 9T driver
« Reply #8 on: September 03, 2009, 11:06:07 PM »
Yeah, but if its just the thickness it could be turned down on a lathe.

A file/grinder may not be the most accurate way  ;D

Offline Paradoxium

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Re: Nankai 9T driver
« Reply #9 on: September 04, 2009, 04:24:34 AM »
Yeah, but if its just the thickness it could be turned down on a lathe.

A file/grinder may not be the most accurate way  ;D

This is correct. Any driver, cog or sprocket can be machined down in a lathe. As long as you get the measurement right and copy the angles, it works.  Afterwards, its important to remove the sharp edge off each tooth with a file to prevent chain wear.

Obviously it will wear faster and isn't as strong, but everyone already knows this. Works fine for me though.  ;D

Offline out~riding

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Re: Nankai 9T driver
« Reply #10 on: September 04, 2009, 06:33:00 PM »
i have heard of people filing down the teeth but it is difficult to get it to work because you would have to file down a perfect amount on either side of each tooth. Pardon my ignorance but what is a k-type nankai fc? Will this driver work on my technolite (the one with the chinese letters on it)?

k-type means the Techno Lite 10mm f/c.
There are 2 versions of this new driver, 100AKA - aluminum and 10CKW - steel (your's)