help me solve a mystery!!

[steptoe]

bring it out here,,in the clean,, we'll knock it over it in no time

[makzy]

Yeah i got that link thanks Greg, used it when we fixed mine, all my gears were fine except for the 2nd gear that you can remove using that procedure, the main problem with mine was the selector fork, badly worn and bent, replaced both gear and fork with donors, gave gears a little touch up with grinder and dremmel but they didn't really need it, think i'll have to have another look at the clutch though, brother might have put it back together wrong!! anyway thanks for your help, Cheers.

 MAX XS1100 STD
Bundaberg.

[AussiXS11G]

that's it exactly Max.....
it only does it when I'm being a dickhead so I'm not too worried yet.....

[XSokieSPECIAL]

 You might want to read this makzy. It sounds like it might be you problem.

http://www.xs11.com/forum/showthread.php?t=5090

[makzy]

Yes Jeff< all those things have gone through my mind as well, i'm running a straight 30/40 oil, no friction modifiers, brand new cable, i've adjusted the clutch cable to a good feel, plenty of free play, the plates had a bit of rust on them when i pulled it down, they got a good buffing, and rubbed them on sandpaper on a sheet of glass, friction plates looked good, all checked for flatness, not warped, clutch hub had no serious signs of grooving where the plates sit, i do have a problem with my jetting, still got to sort that a bit more, slight flutter when it comes on the main jet, but this problem occurs when it's gone through that stage and the motor is singing sweet, sounding good, no misses, goes like a rocket, i've gone through the mechanical advance unit, checked the vacuum advance unit, all working fine, have new plug caps, tested coils and leads, new plugs, not getting an electrical miss, i've put the bike on the center stand, shuffled it up to a post, with back wheel off the ground and tried to replicate a swift takeoff using the back brake to load it up but can't get it to do what it does on the road, even to the point of nearly full revs in first with a fair amount of brake pressure, then really stand on the brake and all it does is stall the engine,,,,,,

Bryan, what your suggesting could be the culprit, i did have to adjust the clutch cable a few times when i first got it on the road, cable became tight, slackened it of, 100 k's later had to slacken if off again, thats settled down now after 400k's, i just put that down to the plates having to wear in after they were freshened up, i'm not getting any clutch slip, i'v tried to make it slip but it won't, i didn't put the clutch back together, my brother did that while i was at work one day so i didn't have a good look at what your talkin about, Does your problem feel like you've just ridden over a rail line or somethin like that when your excellerating hard and the rear wheel leaves the ground for a moment? Cheers and thanks fella's
MAX XS1100 STD
Bundaberg

[AussiXS11G]

Strangely.... Steptoe and I were talking about this prob with regard to my machine just last week....
I believe the problem is in the main shaft of the gearbox....there is a "damper assembly" on that shaft
and mine is suspect ....
http://www.benefiscal.co.uk/showpic.php?http://www.benefiscal.co.uk/images/Parts/2H7-16306-00-00%20-2.jpg

[excess.11]

As mentioned on here before...some people have experienced clutch slip if using an unsuitable engine oil.General concensus seems to be to use an oil with the least amount of engine additives trying to prevent slippage of the clutch when most under load as you are experiencing when screwing the throttle in first gear....when it grabs again..this may be the clunk your feeling through the transmission/drive.I m assuming you ve already adjusted the clutch cable and adjuster at the clutch itself. One thing i might suggest to locate the problem more precisely would be to replicate the fault whilst not out on the road but in a situation where you can hear and see better......is to put the front wheel to a brick wall or other immovable object with front brake held on and have a friend nearby to listen and see lower down than what the rider can where the clunk or other noise is generating from as you let the clutch out .If your clutch plates and or spring tension are wearing or fatigue is setting in........theres going to be clutch slippage in any gear.......also it may show this due to the wrong oil.When you ride off in 1st gear at speed....thats when your loading the bike up the most..as you select other gears you already have momentum on your side.so the problem may not show out on the road.........hence the wall test to see if the same thing happens in other gears..........ps..i hope you haven t got too good a tyre on the back because it s going to spin and smoke a little........you could also save the tyre by applying the back brake to fix the wheel in position which would also limit the testing to exclude the rear wheel rotation out of the equation and any problems it may have.  Other things to keep in mind when trying to find this fault is......it s not only the mechanical side of things that are at full load in the fault situation......it s also the electrical and fuel.......you may have 2 or more issues occuring at the same time and it may not be just one .Fixing the fault is the easy part.........in your case locating and pinpointing it or them.......... is the demon.Good luck my friend.A well adjusted clutch and reasonable plates/springs should allow you to set the clutch for the bike to start moving away at about halfway through the travel of the lever as you let it out.If your adjustment is at the start of letting the lever out before the bike moves away.....there s probably wear on the plates/stretched cable if your at the end of your adjustments etc.

[makzy]

I seem to have a problem when i screw on the gas in 1st gear, when full power comes on it seems to either jump out of gear then reengage  or something slips then grabs again making a dull clunk or thud almost like you quickly dump the clutch while under power, when i got the bike 2nd gear was not workin at all, it would engage but as soon as you tried to power on it would jump out and make a severe rattling sound bit like the clutch on a battery drill, but this is not doing that, i inspected all the gears when i fixed 2nd and all looked quite good, 2nd gear now works fine rite up to full steam, my brother says that his also does it sometimes when he really screws it on in 1st, i've removed the final drive every seem fine, no backlash or play, splines were a bit dry, cleaned them, cleaned out old grease and nipple, regreased, still does it, middle drive seems ok, nice and smooth, havn't removed driveshaft yet but don't think thats the prob,
 any ideas?? can they jump out of gear then jump straight back in again?
 My brother said to just take it easy in 1st but thats like tellin a teenager to stop wankin!!
 If anyone has had a simillar problem i'd like to know what the fix is, I really don't want to strip the gearbox again, something in the clutch perhaps???

MAKZY XS1100 STD
Bundaberg
0407628358