Oh boy…here we go again…for those of you who remember my last catastrophic failure on the 2012 1199 bike.
So was cruising to my usual weekend spot about 8 weeks ago. Heard some metallic noise from the bike at around 50mph, steady throttle input.
Look down and RIGHT side is billowing smoke.
Pull clutch in immediately, turn off the motor and coast to side of road. Once stopped a ton of smoke from burning oil on exhaust on RIGHT side still, and I can see oil pooling on the ground…....!
Call a buddy to get me trailered home, pull fairing and find what is shown below. I’ve got metal teeth sticking out of case, near the oil cooler.
Dump oil out and get a ton of teeth and debris, both from plastic and metal gear, and what looks to be a spring (more on that later).
Everything was so jammed up behind the casing had to break the cover off in pieces to remove.
Further inspection shows timing chain was un-effected, thank goodness. Main primary sprocket looks good. Clutch gear looks good. Damage appeared confined to the idle gear and small sprocket on the primary.
Dropped oil pan (after removing rear-sets on both sides, and exhaust FML…), and found more debris.
Removed pick up screen and found debris. Cut open oil filter and metal shavings did not appear to make it past this filter so good feeling that top end of motor is good.
Pulled spark plugs and took pictures of piston tops, sidewall and intake/exhaust valves, all looked good, so no oil in top end, or blow by, or anything concerning thank goodness!
@MdDuc shipped me his left over motor from 1299 part out. Many thanks Sir by the way, hope your trip went well!
Spare motor had all the pieces I needed to replace, so that is done and now I’m just reassembling a little bit every night after work. Will time the completion to a day that is ridable.
My plan is to take a very short drive, get oil up to full temp, then dump it once more and see how much more debris or shavings are found….so that info is pending.
Should that be good, ill just pour the oil back into motor and carry on. If still getting debris I plan to flush oil completely, replace filter and repeat as many times as needed.
Overall was a good time with tare down and repair. Learned a lot about the internals of this motor. Seems this small sprocket that broke is slightly out of phase to the main primary, and there are three springs that fit into the small guy that allow the sprocket to shift and line up under power/acceleration. Seems this gear is like a shock absorbing feature, and possibly a noise reduction feature during quick shifts.
No clue what gave way first, but my money is on the idle gear (plastic).
Pics incoming next…
JAG
So was cruising to my usual weekend spot about 8 weeks ago. Heard some metallic noise from the bike at around 50mph, steady throttle input.
Look down and RIGHT side is billowing smoke.
Pull clutch in immediately, turn off the motor and coast to side of road. Once stopped a ton of smoke from burning oil on exhaust on RIGHT side still, and I can see oil pooling on the ground…....!
Call a buddy to get me trailered home, pull fairing and find what is shown below. I’ve got metal teeth sticking out of case, near the oil cooler.
Dump oil out and get a ton of teeth and debris, both from plastic and metal gear, and what looks to be a spring (more on that later).
Everything was so jammed up behind the casing had to break the cover off in pieces to remove.
Further inspection shows timing chain was un-effected, thank goodness. Main primary sprocket looks good. Clutch gear looks good. Damage appeared confined to the idle gear and small sprocket on the primary.
Dropped oil pan (after removing rear-sets on both sides, and exhaust FML…), and found more debris.
Removed pick up screen and found debris. Cut open oil filter and metal shavings did not appear to make it past this filter so good feeling that top end of motor is good.
Pulled spark plugs and took pictures of piston tops, sidewall and intake/exhaust valves, all looked good, so no oil in top end, or blow by, or anything concerning thank goodness!
@MdDuc shipped me his left over motor from 1299 part out. Many thanks Sir by the way, hope your trip went well!
Spare motor had all the pieces I needed to replace, so that is done and now I’m just reassembling a little bit every night after work. Will time the completion to a day that is ridable.
My plan is to take a very short drive, get oil up to full temp, then dump it once more and see how much more debris or shavings are found….so that info is pending.
Should that be good, ill just pour the oil back into motor and carry on. If still getting debris I plan to flush oil completely, replace filter and repeat as many times as needed.
Overall was a good time with tare down and repair. Learned a lot about the internals of this motor. Seems this small sprocket that broke is slightly out of phase to the main primary, and there are three springs that fit into the small guy that allow the sprocket to shift and line up under power/acceleration. Seems this gear is like a shock absorbing feature, and possibly a noise reduction feature during quick shifts.
No clue what gave way first, but my money is on the idle gear (plastic).
Pics incoming next…
JAG
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