gasbag
Active Member
Hello,
My bike has developed a problem and I was hoping someone might have an idea as to what may be wrong.
It is hard to explain. It is an engine/tranny rattling sound but it is not specific to engine speed, meaning it doesn't get louder as speed increases and the noise does not change pitch. It is always the same sound. The noise occurs at certain speeds but does not increase in frequency or loudness if I accelerate. The noise sounds like it is coming from under the front of the tank, maybe down low. My pipes aren't obnoxious but they are not stock and I can plainly hear the noise riding with a helmet. I had an old Triumph TR4 that had a loose timing chain tensioner. It sounds a bit like that only not as loud.
The noise occurs ONLY at these times; the speeds are approximate.
1st gear: 14 to 18 mph
2nd gear: 24 to 28 mph
3rd gear: 34 to 38 mph
4th gear: 44 to 48 mph
5th gear: 54 to 58 mph
NOTE: in between those speeds there is no unusual noise whatsoever.
As I run up the gears the noise gets more noticeable. I assume that is because as the bike gets up to cruising speed everything is quieter and the noise becomes more apparent. In first gear it is hard to hear.
If I am cruising at 56mph in 5th the noise is very apparent. If I pull in the clutch the noise goes away as I coast down the road. If I re-engage the clutch the noise returns. Also, if I decelerate the noise will change a little and get a little louder.
My dealer found a compensator sprocket loose, whatever that is. They said they tightened it. No change.
This noise is so speed specific I can actually ride around and avoid hearing it just by altering my shift pattern. There are no vibrations and I have full power. The bike runs great. Well, except for this noise.
I don't like bothering people with my problems, but this noise has me stumped, and obviously my dealer at the moment. Any help or suggestions or like experiences would be much appreciated.
Thanks for listening.
Have a good day and ride safe.
gasbag
My bike has developed a problem and I was hoping someone might have an idea as to what may be wrong.
It is hard to explain. It is an engine/tranny rattling sound but it is not specific to engine speed, meaning it doesn't get louder as speed increases and the noise does not change pitch. It is always the same sound. The noise occurs at certain speeds but does not increase in frequency or loudness if I accelerate. The noise sounds like it is coming from under the front of the tank, maybe down low. My pipes aren't obnoxious but they are not stock and I can plainly hear the noise riding with a helmet. I had an old Triumph TR4 that had a loose timing chain tensioner. It sounds a bit like that only not as loud.
The noise occurs ONLY at these times; the speeds are approximate.
1st gear: 14 to 18 mph
2nd gear: 24 to 28 mph
3rd gear: 34 to 38 mph
4th gear: 44 to 48 mph
5th gear: 54 to 58 mph
NOTE: in between those speeds there is no unusual noise whatsoever.
As I run up the gears the noise gets more noticeable. I assume that is because as the bike gets up to cruising speed everything is quieter and the noise becomes more apparent. In first gear it is hard to hear.
If I am cruising at 56mph in 5th the noise is very apparent. If I pull in the clutch the noise goes away as I coast down the road. If I re-engage the clutch the noise returns. Also, if I decelerate the noise will change a little and get a little louder.
My dealer found a compensator sprocket loose, whatever that is. They said they tightened it. No change.
This noise is so speed specific I can actually ride around and avoid hearing it just by altering my shift pattern. There are no vibrations and I have full power. The bike runs great. Well, except for this noise.
I don't like bothering people with my problems, but this noise has me stumped, and obviously my dealer at the moment. Any help or suggestions or like experiences would be much appreciated.
Thanks for listening.
Have a good day and ride safe.
gasbag