Rox Lemans Posted June 11, 2016 Share Posted June 11, 2016 Was riding the Ole Scura the other day in the hills I would get some chatter at around 6000rpm in 2nd and 3rd gear ( it's at least the only gears I've had it at 6k). The flywheel and clutch assembly are brandy new. Of the reading I've done folks say numerous things from check the valves to the gear box is about to explode . Any ideas? Link to comment Share on other sites More sharing options...
docc Posted June 12, 2016 Share Posted June 12, 2016 "Pre-detonation" from ethanol fuel? Link to comment Share on other sites More sharing options...
Scud Posted June 12, 2016 Share Posted June 12, 2016 Let's have another Scura rally, then we can compare and see what's going on. This time we can actually ride Scuras instead of our LeManseseses (what is the correct plural form of LeMans?) You need to get it over 6,000 RPM in all the other gears - in the name of "research." 1 Link to comment Share on other sites More sharing options...
footgoose Posted June 12, 2016 Share Posted June 12, 2016 Possibly a contact rattle, with the rpm's providing just the right vibe. Check the head pipes where they join the crossover. They can get very close to the case. Anything else that's been removed/attached. Scud.. that be LeMens 1 Link to comment Share on other sites More sharing options...
Lucky Phil Posted June 12, 2016 Share Posted June 12, 2016 Was riding the Ole Scura the other day in the hills I would get some chatter at around 6000rpm in 2nd and 3rd gear ( it's at least the only gears I've had it at 6k). The flywheel and clutch assembly are brandy new. Of the reading I've done folks say numerous things from check the valves to the gear box is about to explode . Any ideas? How does "chatter" relate to an engine issue? The term "chatter" in the motorcycle world relates to suspension related performance issues, generally more on race bikes. Ciao Link to comment Share on other sites More sharing options...
Kiwi_Roy Posted June 13, 2016 Share Posted June 13, 2016 Do you still have the stand switch, I've heard it will bounce at some revs Sent from my shoe phone! Link to comment Share on other sites More sharing options...
Rox Lemans Posted June 15, 2016 Author Share Posted June 15, 2016 Solved my issue and it was stupid. I noticed from the seepage my gear oil was low so I topped it off and cleaned the bike off. A good wash and a layer of Hondaline cleaner. I then took her out . Chatter gone . Got it home and gear oil was oozing out the hole. I look at my Lemans ..... there's a bolt in that hole. I guess it's an overflow hole or something . A 6m x 30mm. Bought a bolt and washer and test rode . Viola. I guess the chatter was my trans telling me she was low. The leak was probably a bolt lost in service or in transit. Thankfully it was a 3$ fix instead of a 5hr fix. Link to comment Share on other sites More sharing options...
Lucky Phil Posted June 15, 2016 Share Posted June 15, 2016 Solved my issue and it was stupid. I noticed from the seepage my gear oil was low so I topped it off and cleaned the bike off. A good wash and a layer of Hondaline cleaner. I then took her out . Chatter gone . Got it home and gear oil was oozing out the hole. I look at my Lemans ..... there's a bolt in that hole. I guess it's an overflow hole or something . A 6m x 30mm. Bought a bolt and washer and test rode . Viola. I guess the chatter was my trans telling me she was low. The leak was probably a bolt lost in service or in transit. Thankfully it was a 3$ fix instead of a 5hr fix. I have absolutely no idea what you are talking about I'm afraid. Ciao Link to comment Share on other sites More sharing options...
docc Posted June 15, 2016 Share Posted June 15, 2016 Truly. Where is this mystery bolt? If yours fell out, we all ought to have a look at ours . . . Link to comment Share on other sites More sharing options...
JRD Posted June 15, 2016 Share Posted June 15, 2016 The only chatter I ever get at high RPM's is from my wonderful wife telling me to "SLOW DOWN!". 2 Link to comment Share on other sites More sharing options...
Rox Lemans Posted June 15, 2016 Author Share Posted June 15, 2016 Truly. Where is this mystery bolt? If yours fell out, we all ought to have a look at ours . . . See the hole where it seems a 6mm x 30mm hex bolt should be? Well a 6mm x 30mm hey bolt should be there... ;-) Link to comment Share on other sites More sharing options...
Scud Posted June 15, 2016 Share Posted June 15, 2016 That hole is not intended to be an oil overflow - it is meant to hold parts of the transmission together. If it vibrated out, then everything else becomes suspect. I would replace it immediately, inspect all other similar bolts, and re-torque every single one. Link to comment Share on other sites More sharing options...
Rox Lemans Posted June 16, 2016 Author Share Posted June 16, 2016 I wouldn't think it would but kind of hoped. A bit too high ..lol Nonetheless it stopped leaking so I guess that little bolt meant much. Link to comment Share on other sites More sharing options...
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