riding along in 3rd gear around 40mph, all of a sudden a loud clunk and the motor goes dead...  i pull the clutch and coast to a stop...  this cannot be good.  pushed it home, luckily only a mile from home...  i have a feeling it will be a while before i'm riding again...

dude...

that sucks. 

Based on the symptoms and quick glace at the photos I assumed you're f__ked, but it also looks like you still have two belts on the pulleys??? 

Any details on the belts?  How many miles/months?  Were you running open covers?  Any road debris invovled?

Quote from: bigtime on August 24, 2008, 04:40:06 PM
Based on the symptoms and quick glace at the photos I assumed you're f__ked, but it also looks like you still have two belts on the pulleys??? 

Any details on the belts?  How many miles/months?  Were you running open covers?  Any road debris invovled?

belts are 2 yrs old...  maybe 5k miles.  open covers...  i assume a pebble kicked up or something, but that's just speculation.  yes, horizontal cylinder belt is shredded a bit as you can see, but still on the pulleys.  that long strand was sort of wound up in the pulleys, but it came out pretty easily.  vertical cylinder belt looks fine...

two glasses of wine, but i don't feel any better yet...

Normally I'd offer you $50 shipped to WA for the bike as is, no questions asked.  However, I'm prepared to go up to $65 for this one.  Don't ask me why, just one of those crazy days I guess.  This is a one-time offer.  Don't waste a lot of time fielding advice from forum members.  The'll just give you grief. 

That can't be good. 

Quote from: ducpainter on August 24, 2008, 06:34:22 PM
That can't be good. 

The fact that the belt didn't come off could be his savior.  If it was able to wrap around the crank pulley enough to cause it to sieze, it might not have did any head damage.  I don't if that is possible though.

I assume you didn't try to refire it.    Did it sieze up, as in back wheel locked (crank siezed) or did it just cut off (make the beast with two backsed up valves)?  Hopefully you didn't bend your crank.  I would start with taking the plugs out and try to turn the engine by hand to see what it sounds like.

At least it is the most accessible head.

Edit:  You're right though DP, that can't be good.

Quote from: Jobu on August 24, 2008, 06:39:50 PM
The fact that the belt didn't come off could be his savior.  If it was able to wrap around the crank pulley enough to cause it to sieze, it might not have did any head damage.  I don't if that is possible though.

I assume you didn't try to refire it.    Did it sieze up, as in back wheel locked (crank siezed) or did it just cut off (make the beast with two backsed up valves)?  Hopefully you didn't bend your crank.  I would start with taking the plugs out and try to turn the engine by hand to see what it sounds like.

At least it is the most accessible head.

It didn't sieze, I kept rolling along (i pulled the clutch and put it in neutral)...  i heard the clunk, the motor died, my heart stopped, and i pulled the clutch.  So it was moving for a second or so in gear i suppose, but no rear wheel lockup. 

Yup, Mark Savory just gave me the same advice...  I'm going to pull the plugs tomorrow and turn the engine by hand and take a listen.  I'll post up the results...

Thanks for the help.

Reason # 8 why I don't run open belt covers...

Best of luck.. probably can get a good look if you pull the header off too.

Quote from: wbeck257 on August 24, 2008, 06:48:11 PM
Reason # 8 why I don't run open belt covers...

Best of luck.. probably can get a good look if you pull the header off too.

 

What are the first 7 reasons?

Fook me! O man ... Good luck tomorrow 

Shit!

Good news is the belts are still on.  Bad news is the bike stalled. 

This what I would try:
   Cut frayed part from belt.
   Remove spark plugs.
   Turn over engine by hand and see if the timing marks still line up.  Do not use excessive force.
   If they do, put new belts on and pray to the Motorcycle Gods.
   

Make the beast w/ two backs!  I'm crossing my fingers for you on this one.  Well at least you are not hurt or anything.  Seriously, let us know how it goes.

 

I hope its just what it looks like and you didnt skip a tooth.

im doing hte motogod dance tonight for you man. Your bike is seriously my fav bikes of all the featured bikes (from the DML)

I'm kinda puzzled as to why the bike stalled if the belt is still on the pulleys.

How tightly wound-up was that loose strand of belt?

If it was really bound up, I guess that could be enough to stall the engine, but I'd think that would in turn lock up the rear wheel.

That gives me a sinking feeling that the belt jumped some teeth.   



Make sure to let us know what you find out after pulling the plugs and turning the mill over by hand.