How long will Connors new gearbox last?
Simple question, no? But nobody seems to know! Here's the story....
While in Iran (about 12000 miles ago) my bike (1990 XT 600Z with 30,000 miles on the clock at that time) started making a whirring noise, in 5th gear only, at about 3500 revs.
Some very clever people told me that it was likely to be pitting of the 5th gear, and that I should replace it very soon. Well, 10,000 miles later I got round to it, and guess what? They were right. Sure enough both 4th and 5th gears were badly pitted and in need of replacement.
I used Yamaha genuine parts, bought here in Australia.
So my question is, how long will the new gears last? I appreciate that its difficult to tell, and depends on how harshly the bike is treated - but I mean, roughly how far should I expect? My original gearbox had 30,000 miles on the clock when it started playing up. So am I to expect the problem to return in another 30,000 miles? Seems like a pretty serious design flaw, if so.....or was I just unlucky first time around?
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