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Scary moment 1 year 1 month ago #31260

  • PaulD
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Ok, now my bike has always had a noisy transmission, it’s a sort of whine? When I first got the bike as I was rounding a slow corner I heard a rattling noise and felt a bang through the gear lever? It never happened again so I (foolishly) forgot about it. Shortly afterwards I was changing the final drive oil and as I was turning the real wheel by hand the whole thing locked up! I wiggled the wheel back and forth and it freed up but the final drive box felt rough so I changed it for a good used one and never had any more problems apart from the slightly noisy transmission. Coming home from a ride out tonight it happened again, it sounded like I was in between gears (that rattle you get when you miss a gear change) and again I felt a kick through the gear lever. As I was in third gear and wasn’t changing gear it wasn’t a missed gear. I pulled over and in neutral rocked the bike back and forward but she felt ok? I carried on the remaining few miles home and she was back to normal slightly noisy as usual. Any ideas guys?

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Scary moment 1 year 1 month ago #31261

  • Kawboy
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Couple of things come to mind here.
What you're describing sounds like the result of a bent shifter fork. What happens is that you're in a gear and the bent shifter fork is holding another cog gear just off of engagement and a little play in the gear box and that gear is now attempting to engage but the gear you're in is driving the bike. 2 gears can't mesh at the same time so Bang !!
Another unusual recall I have is that someone on this site was doing a total rebuild and had split the engine and came across a grenaded secondary shaft bearing (just in front of the clutch basket I believe). For some reason I think it was StanG who was doing the work???

Bottom line- As much as I hate to say it, time to pull the engine and split it. Whining is not good. Banging even worse. There have been a couple of guys on the site that did this job with no previous experience and had successful outcomes. In for a penny, in for a pound I say. We're here to help.

KB
Post Script- Found it - It was KZA13 who posted the story   Oil Pump Pickup Screen Topic

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Last edit: by Kawboy.

Scary moment 1 year 1 month ago #31262

  • dcarver220b
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PaulD, that sucks. Out of curiosity, did you shift any differently when the bank occurred? Maybe not a complete positive shift? Different RPM band? 

Have you looked for metal particles in engine/trans oil?  

Sigh.

 

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Scary moment 1 year 1 month ago #31268

  • PaulD
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PaulD, that sucks. Out of curiosity, did you shift any differently when the bank occurred? Maybe not a complete positive shift? Different RPM band? 

Have you looked for metal particles in engine/trans oil?  

Sigh.

I wasn’t changing gear at the time and the last oil change I did was less than a 1000 mile ago and there was no sign of metal particles in the oil or filter?

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Scary moment 1 year 1 month ago #31271

  • dcarver220b
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If you do have to rebuild, lots of good info and pics here .. At least you'll know what you're getting into...
The following user(s) said Thank You: PaulD

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