GuanoJuano
Member
Last fall my Speedmaster developed what I thought was a surge at lower speeds. Since then I've determined it is a harmonic vibration at 3000 rpms in 2nd gear. It doesn't seem to be strong enough to be noticeable at other rpms or gears. I took it to the shop to diagnose because I am at a loss to what would be causing it. They gave it a "tune up" and changed my clutches. I think they were trying to fix the surge. When I got it back, it was still there. Very frustrated I took it back to the shop. Apparently this time he finally realized what I was trying to get fixed. He was pretty perplexed also on this. He checked every bulletin and contacted Triumph in hopes to figure it out. He came up with 3 things he says could be causing it. A positioning sensor. But that would cause some overheating, which my bike is not doing. Timing. But that would cause low power at the lower end and overpower at the top, which my bike is not doing. The 3rd and last thing he and Triumph came up with is something moved on the lower part of the engine, I think on the crankshaft, that put it out of balance. The theory is that it only comes up on every 5th revolution. That's why it is harmonic. But the bad news it is it will take getting down to the bottom of the motor and replacing the crankshaft and many other things to fix it. Very costly. Enough for him to recommend maybe trading it in. I really like my Speedmaster. Not a fan of the newer ones. So trade in is not an option for me. So....my question after the longgg story.
Has anyone else experienced this scenario? Does anyone have any ideas what could be causing this? And of course does anyone know of a fix for it that won't cost thousands of dollars?
The shop and Triumph have still only put forth their solution as a theory that can only be proved by digging into it and costing me way too much, especially if they are wrong again.
2013 Triumph Speedmaster with 865 Bonneville motor 13k miles
Begging for help.
Has anyone else experienced this scenario? Does anyone have any ideas what could be causing this? And of course does anyone know of a fix for it that won't cost thousands of dollars?
The shop and Triumph have still only put forth their solution as a theory that can only be proved by digging into it and costing me way too much, especially if they are wrong again.
2013 Triumph Speedmaster with 865 Bonneville motor 13k miles
Begging for help.
