Evening all,
After a successfull 80 or so miles on the new engine and with break in going smoothly I seemed to be living the dream as far as motored bikes go.
Not one issue with anything engine wise and had mega power too.
Went for one of the best rides ever and on the way home I ended up hearing a noise I didnt want to. I could tell it was the gears so stopped engine and decided to pedal home to be on the safe side. There were no issue pedaling, it was free and smooth.
- Head off first to make sure my lovely mildly broken in bore and piston/rings were ok. Top stuff there. No issues at all
- Next, come round to the clutch side and slowly take off the cover thinking I would see horror. Nope, not one single gear tooth gone or broken
- Further inspection reveals that the little screw holding the flower nut in place had come unstuck and then allowed it to do what it wanted in there while engine was running and it decided to get itself run through the little drive gear from the crankshaft and the big clutch gear.
- Ok, how do I know this? Well sadly, the little drive gear now has a wobble due to there being a little bend in the shaft that its attached to.
- It doesn't wobble out of mesh and still has a good mesh at the furthest point of where its bent to now.
- Engine still starts and I put a new piston and rings in that I had spare. Also a new small end needle bearing, clips and g.pin.
Everything is checked over and secure now so should I just ride and enjoy the engine still? There is no leaks of oil on any seals and the bearings and housings are all good with smooth action and no slop. Im not happy about it but I am making the most of what I have without creating more issues and not missing out on riding when I want to. I am sure engines people have on here have run in a worse condition with success so let me know.
Lessons learned - Threadlock that screw and check before a ride. Done now.
Thank you.
-Storm-
After a successfull 80 or so miles on the new engine and with break in going smoothly I seemed to be living the dream as far as motored bikes go.
Not one issue with anything engine wise and had mega power too.
Went for one of the best rides ever and on the way home I ended up hearing a noise I didnt want to. I could tell it was the gears so stopped engine and decided to pedal home to be on the safe side. There were no issue pedaling, it was free and smooth.
- Head off first to make sure my lovely mildly broken in bore and piston/rings were ok. Top stuff there. No issues at all
- Next, come round to the clutch side and slowly take off the cover thinking I would see horror. Nope, not one single gear tooth gone or broken
- Further inspection reveals that the little screw holding the flower nut in place had come unstuck and then allowed it to do what it wanted in there while engine was running and it decided to get itself run through the little drive gear from the crankshaft and the big clutch gear.
- Ok, how do I know this? Well sadly, the little drive gear now has a wobble due to there being a little bend in the shaft that its attached to.
- It doesn't wobble out of mesh and still has a good mesh at the furthest point of where its bent to now.
- Engine still starts and I put a new piston and rings in that I had spare. Also a new small end needle bearing, clips and g.pin.
Everything is checked over and secure now so should I just ride and enjoy the engine still? There is no leaks of oil on any seals and the bearings and housings are all good with smooth action and no slop. Im not happy about it but I am making the most of what I have without creating more issues and not missing out on riding when I want to. I am sure engines people have on here have run in a worse condition with success so let me know.
Lessons learned - Threadlock that screw and check before a ride. Done now.
Thank you.
-Storm-