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Old 16-03-12, 16:15
SingleMinded SingleMinded is offline
XT-Moto SuperStar
 
Join Date: Sep 2008
Location: Holten, Netherlands
Posts: 262
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A few Dutch riders (I'm one of them) have modified the sprocket-carrier such that it can take either a double Yamaha bearing or a single wide BMW wheel
bearing, with good results.

Here's a link to some photo's showing the double Yamaha bearing solution: http://www.motor-forum.nl/forum/list...46525#21446525


This is the BMW part no. 36 31 2 310 972 (used in some BMW front wheels)
inner size is 25 mm
outer size is 52 mm
with 20,6 mm (5,6 mm more then standard and with double row bearingballs)
You'd have to make a new socket!
€32,-

It's actually a INA 3205-2RS F0712 or SKF 3205-2RS

like http://www.amazon.com/32052RS-Bearin.../dp/B002HARCP2




Last time I checked the rubbers didn't show any wear after a few thousand km's. Normally you'd see rubber flakes and worn blocks.

EDIT: I only just noticed Salami's post ...

HJ
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