vetteman Posted October 31, 2007 Share Posted October 31, 2007 i think i have lost 6th gear, or at least some bits and pieces of it. while passing under heavy throttle i started getting a jerking like the chain was slipping. i pulled off to check the chain adjustment and all was good so i nursed it home. closer to home i started to beat on it to duplicate the problem and found that it would only do it in 6th. so i get home and check the chain and sprockets further. the 16t front was worn a little bit, didnt look like it would be bad enough for the chain to slip but i put the stock one back on anyway and went for a ride with the same results. i can beat the hell out of it in any gear and its normal but in 6th it acts like the chain is slipping. i'm thinking that a few teeth are broken off. when i got back home i drained the oil and didnt get any metal. so i fished an antenna magnet around in the pan and still got nothing. before i spend a buttload of time ripping this thing apart, do you guys have any other ideas? is there something simple that i'm missing? can i see the gears with the pan off? Quote Link to comment Share on other sites More sharing options...
airborneXX Posted October 31, 2007 Share Posted October 31, 2007 You might wanna change the title of this thread I don't know what else to say. Please keep us posted Quote Link to comment Share on other sites More sharing options...
wrgoudy Posted October 31, 2007 Share Posted October 31, 2007 I could be all wet, but you might want to check the shifter mechanism that rotates the shift drum to make sure it's adjusted correctly. I haven't looked in the shop manual yet, but assume the XX uses a shift pawl, spring loaded device to rotate the shift drum like most of the bikes I've had apart. I doubt that it's the problem, but I'd check into it anyway before I tore things apart. Could also just be wear on the gears dogs (assuming it has them on sixth gear), rather than the gear teeth themselves - a historic problem at least with Yamaha XS11's and second gear. You might try loading the shift lever when in a sixth gear romp to see if it tries to "push out of gear". Good Luck, Bill Quote Link to comment Share on other sites More sharing options...
Keith Posted October 31, 2007 Share Posted October 31, 2007 Just a thought: seems like it could be clutch slippage; hard acceleration in top gear could cause the clutch to slip if the plates are getting worn or the springs are getting weak. You could check the clutch push rod to be sure it's not gummed up and holding the clutch open. Quote Link to comment Share on other sites More sharing options...
vetteman Posted October 31, 2007 Author Share Posted October 31, 2007 airborne, change the title to what? "please confirm my bike is fucked". i thought about that one, LOL. keith, i have kinda written off the clutch since its only 1 gear. its strong in all others with no slippage. when i changed the sprocket the pushrod looked good. that will be something to check prior to ripping the engine out though. bill, i'm not familiar at all with the shifter mechanism, i'll have to check the manual on that one too. it did push out of 6th earlier that day into that false neutral thingy. i attributed it to a lazy shift, only did it once. i was hard on the gas when it did and i was thinking if there are some teeth chipped thats probably when it happened. otherwise it doesnt seem to want to push out, at least not on its own. i'll try to load it if i take it for another ride and see what happens. Quote Link to comment Share on other sites More sharing options...
kiwimack Posted October 31, 2007 Share Posted October 31, 2007 You might wanna change the title of this thread I don't know what else to say. Please keep us posted maybe because of this........ clicky Quote Link to comment Share on other sites More sharing options...
slowrideCX Posted October 31, 2007 Share Posted October 31, 2007 I would lean more toward the shifting drum or a bent shifting fork rather than a chipped gear. You would have found metal in the oil or pan with a gear. Either way you have to open the trans to make the repair. Good luck. Quote Link to comment Share on other sites More sharing options...
rockmeupto125 Posted October 31, 2007 Share Posted October 31, 2007 Quick guess is that the sixth gear dogs, rather than the gear teeth, are rounded off a bit. That sucks. Quote Link to comment Share on other sites More sharing options...
jon haney Posted November 1, 2007 Share Posted November 1, 2007 I would lean more toward the shifting drum or a bent shifting fork rather than a chipped gear. You would have found metal in the oil or pan with a gear. Either way you have to open the trans to make the repair. Good luck. +1 You have a bent shift fork. Hopefully you won't need to replace the gear also. If you have to ride it, stay out of sixth. Good Luck. Quote Link to comment Share on other sites More sharing options...
vetteman Posted November 1, 2007 Author Share Posted November 1, 2007 looks like i have one hell of a winter project one way or another. i'll keep you guys posted but this thread will probably be 10 pages back before i get around to working on it. thanks for the suggestions. i was thinking about just staying out of 6th but was afraid that if there were chunks it would lead to total devistation, for the bike and myself. not really worth risking. Quote Link to comment Share on other sites More sharing options...
Fast Eddy Posted November 1, 2007 Share Posted November 1, 2007 WOW bummer, sorry to read of this trouble. Good luck and keep us posted. Quote Link to comment Share on other sites More sharing options...
vetteman Posted November 3, 2007 Author Share Posted November 3, 2007 i started the teardown tonight. not to the point where i have pics and a parts list yet. the plastics, tank, exhaust, radiator and some misc stuff is off. i'm to the point where i need to start taking pics and marking stuff so i came in the house for masking tape and a camera and really dont feel like going back out. tomorrow is supposed to be nice. hopefully i will get some free time to go back out and work on it. i'm probably only a couple of hours away from setting the engine on the workbench. the clutch looked great and everything i can see from there (which isnt much) also looks great. while i've got the engine out i'm also going to check the valve clearances, replace spark plugs, pair elimination, big bore kit & turbo <j/k on those 2, only in my dreams. Quote Link to comment Share on other sites More sharing options...
cbrxxquad Posted November 3, 2007 Share Posted November 3, 2007 Quick guess is that the sixth gear dogs, rather than the gear teeth, are rounded off a bit. That sucks. +1 Quick guess is that the sixth gear dogs, rather than the gear teeth, are rounded off a bit. That sucks. +1 and fixable witha grinder and steady hand Quote Link to comment Share on other sites More sharing options...
vetteman Posted November 3, 2007 Author Share Posted November 3, 2007 +1 and fixable witha grinder and steady hand i have both of those. we'll see what it looks like when i get in there. Quote Link to comment Share on other sites More sharing options...
vetteman Posted November 3, 2007 Author Share Posted November 3, 2007 gear dogs it is. on m6 & m3/4, also c4 is kinda wore so that one will be replaced too. doesnt look like something i want to grind. i have pixx but they wont upload. they arent really that worn, just a little bit. i was expecting to see more damage than that the way it was jerking. the shift forks are all straight, at least to the naked eye. the center one is a bit worn i guess from the dogs pushing the gear back into it, so it will be replaced too. i havent got a complete parts list together yet. any suggestions on where to buy the parts. i have checked ron ayers, babbitt's and honda direct line (hdl) with hdl coming in with the best prices so far. thanxx for all the help so far. Quote Link to comment Share on other sites More sharing options...
Fast Eddy Posted November 3, 2007 Share Posted November 3, 2007 gear dogs it is. on m6 & m3/4, also c4 is kinda wore so that one will be replaced too. doesnt look like something i want to grind. i have pixx but they wont upload. they arent really that worn, just a little bit. i was expecting to see more damage than that the way it was jerking. the shift forks are all straight, at least to the naked eye. the center one is a bit worn i guess from the dogs pushing the gear back into it, so it will be replaced too. i havent got a complete parts list together yet. any suggestions on where to buy the parts. i have checked ron ayers, babbitt's and honda direct line (hdl) with hdl coming in with the best prices so far. thanxx for all the help so far. The University Motors in Fargo is good if you tell them you are a board member here. I have a Honda dealer here that is good to me. If you get me a parts list I will get you a quote. Quote Link to comment Share on other sites More sharing options...
nickc2s Posted November 4, 2007 Share Posted November 4, 2007 + 1 for University Motors, Mike Barth, 866-551-6478 Quote Link to comment Share on other sites More sharing options...
vetteman Posted November 4, 2007 Author Share Posted November 4, 2007 i'll get a list together and call mike this week. i have heard that name a lot on here and its always been a positive review. Quote Link to comment Share on other sites More sharing options...
Squareman357 Posted November 4, 2007 Share Posted November 4, 2007 i'll get a list together and call mike this week. i have heard that name a lot on here and its always been a positive review. I'd like to see the pics. Haven't seen the inside of a bike trans yet, or clutches, so it'd be good learning tool. Quote Link to comment Share on other sites More sharing options...
vetteman Posted November 4, 2007 Author Share Posted November 4, 2007 pm me your email addy anson. when i try to upload them on here it says upload failed. Quote Link to comment Share on other sites More sharing options...
Squareman357 Posted November 4, 2007 Share Posted November 4, 2007 pm me your email addy anson. when i try to upload them on here it says upload failed. Hmm..might be the size limitation. Try resizing them a bit? squareman15 AT yahoo DOT com Quote Link to comment Share on other sites More sharing options...
vetteman Posted November 4, 2007 Author Share Posted November 4, 2007 email on the way. i attached 6 pixx. hopefully they all make it. Quote Link to comment Share on other sites More sharing options...
vetteman Posted November 8, 2007 Author Share Posted November 8, 2007 parts are ordered through mike barth @ university motors. saved quite a bit of money over the others. should be here in about a week. great guy to deal with and fast with the quote. will post in the vendor section when everything comes in ok. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.