Big Lou Posted July 29, 2013 Share #1 Posted July 29, 2013 (edited) WHY? Rode a passenger last two days, ,,,experienced. Rider.. says it wobbles in the a curve at any speed We did clean pavement to raggedy roads that scraped the borrom Another thing is it seemed like i fought a lean to the left so much,,,i asked if he was sitting on one side Was easier then i thought to ride a passenger Picked me a good crash test dummy,,,,now i can ride somebody i care about:rotf: Oh, ,,new tires, ,,swing arm was just off,inspected greased,,,new brakes,, Edited July 29, 2013 by Big Lou Link to comment Share on other sites More sharing options...
djh3 Posted July 29, 2013 Share #2 Posted July 29, 2013 Hmm tire pressures up?? I'd say put on lift and check sterring head bearings. Dont know if that is an issue with the first gen or not. Link to comment Share on other sites More sharing options...
Flyinfool Posted July 29, 2013 Share #3 Posted July 29, 2013 Yup, check steering bearings. Install brace from Condor. Tire pressure. shock pressure, front and rear Link to comment Share on other sites More sharing options...
dingy Posted July 29, 2013 Share #4 Posted July 29, 2013 Run your finger around the front tire edge, just a little off center. If you feel some dips, very slight, you have cupping on the front tire. This will be a little difficult to feel till once you get the hang of it, take a gentle rapid sweep around the circumfrence of the tire. Gary Link to comment Share on other sites More sharing options...
IronMike Posted July 29, 2013 Share #5 Posted July 29, 2013 The alignment could be off. If its way off at speed in a turn it will make one turn easier than the other. Too many ways to align to explain plenty info on a goolge. Happened to me once. On a trip, many stops and adjustments to get it right on the way to the Tail. It was scary in a right curve and zipped right around a left no problem. And that would also cup the front tire, as its fighting to plant. It could be one thing AND a combination so try one thing at a time. Starting with cheapest and easiest first of course. OR, Just go by a Road Glide! Link to comment Share on other sites More sharing options...
Big Lou Posted July 29, 2013 Author Share #6 Posted July 29, 2013 old front tire had cups on it WHAT IS THE CAUSE??? ,I HAVE A NEW TIRE WITH LESS THAN 1000 ON IT Link to comment Share on other sites More sharing options...
djh3 Posted July 29, 2013 Share #7 Posted July 29, 2013 Which side of tire had the cupping. This could help start a place to look. If its on the right I would have to guess if an alignment issue it has to have pressure on the left to make straight. Shocks pressure could make it do also if pressures are not even. One would work differently than the other. What pressures are you running in the tires? What kind of tires also. Link to comment Share on other sites More sharing options...
Big Lou Posted July 29, 2013 Author Share #8 Posted July 29, 2013 Both sides cupped in opposite spots like a cup here turn tire then a cup there so cups were like bumps all the way around it was an e3 dunlop if i hadnt cut that tire i would not have changed it cups arent real deep just , so you can see them in light , you can feel them Link to comment Share on other sites More sharing options...
Condor Posted July 29, 2013 Share #9 Posted July 29, 2013 Both sides cupped in opposite spots like a cup here turn tire then a cup there so cups were like bumps all the way around it was an e3 dunlop if i hadnt cut that tire i would not have changed it cups arent real deep just , so you can see them in light , you can feel them The only way you can get tire cupping is to run the tires underinflated... Link to comment Share on other sites More sharing options...
Big Lou Posted July 29, 2013 Author Share #10 Posted July 29, 2013 so I understand now the cupping why does it wobble in a curve , he called it a wobble it did seem squiggley some . only thing i could tell was with his weight the headlight changed adjustment and pointed up some , will check air pressure today , im fixing to wax it for florida this weekend .. going swimming only had Van Halen tape , he said he is Van Halened out:rotf: Link to comment Share on other sites More sharing options...
Venturous Randy Posted July 29, 2013 Share #11 Posted July 29, 2013 WHY? Rode a passenger last two days, ,,,experienced. Rider.. says it wobbles in the a curve at any speed Another thing is it seemed like i fought a lean to the left so much,,,i asked if he was sitting on one side QUOTE] Was he holding a gas can? You do know that if you are riding another GUY on the back that he is supposed to be holding a gas can, don't you? RandyA Link to comment Share on other sites More sharing options...
Guest tx2sturgis Posted July 29, 2013 Share #12 Posted July 29, 2013 Was he holding a gas can? You do know that if you are riding another GUY on the back that he is supposed to be holding a gas can, don't you? RandyA Link to comment Share on other sites More sharing options...
Big Lou Posted July 29, 2013 Author Share #13 Posted July 29, 2013 He was a crash test dummy, so I could learn to ride a passenger,,,not a regular occurance,,,dont worry,,I aint changing sides Link to comment Share on other sites More sharing options...
djh3 Posted July 29, 2013 Share #14 Posted July 29, 2013 Sounds like underpressure. It get the scallops in the tread and then in corners they will rise and fall with the scallops and it makes it feel like a wobble. Make sense? My rear was starting to show that pattern. I think PO didnt maybe keep press up. I belive 39 front 40 rear is where they should be. Check a few threads I'm sure its listed. I'm running a Michelein Commander 2 and thats where I'm at. Link to comment Share on other sites More sharing options...
Condor Posted July 29, 2013 Share #15 Posted July 29, 2013 I think PO didnt maybe keep press up. I belive 39 front 40 rear is where they should be. Check a few threads I'm sure its listed. I'm running a Michelein Commander 2 and thats where I'm at. Always keep the psi at the max cold posted on the tire just to be sure. Link to comment Share on other sites More sharing options...
Rick Butler Posted July 30, 2013 Share #16 Posted July 30, 2013 No Jack, Cupping tires is always a sign of a poor suspension with little or no compression or rebound dampening in the forks and/or rear shock. When fork oil get forced through a small orfice long enough, your suspension basically says "this aint oil" and quits working like it should. Kinda like your truck when the shocks get worn out and goes bouncing down the road. Rick The only way you can get tire cupping is to run the tires underinflated... Link to comment Share on other sites More sharing options...
Condor Posted July 30, 2013 Share #17 Posted July 30, 2013 No Jack, Cupping tires is always a sign of a poor suspension with little or no compression or rebound dampening in the forks and/or rear shock. When fork oil get forced through a small orfice long enough, your suspension basically says "this aint oil" and quits working like it should. Kinda like your truck when the shocks get worn out and goes bouncing down the road. Rick We're going to have to disagree on this issue Rick. Cupping is caused by sidewall flex due to low tire pressure. Suspension can cause a lot of handling problems, but tire cupping isn't one of them. Link to comment Share on other sites More sharing options...
friesman Posted July 30, 2013 Share #18 Posted July 30, 2013 (edited) We're going to have to disagree on this issue Rick. Cupping is caused by sidewall flex due to low tire pressure. Suspension can cause a lot of handling problems, but tire cupping isn't one of them. The back Metz on my bike was just changed because it was cupped badly. the bike wandered in left corners and had a vibration and made noise. I had the suspension checked when the new tire went in and all the bearings and joints are fine. As soon as I put the new Michelin C2 tire on it I can now pick any line thru a corner and it is solid. When I bought my bike up it had 25 lbs of air in the back tire and about 30 in the front. The previous owner liked a softer ride, I guess, but it did cup the tire badly. IMHO Brian Edited July 30, 2013 by friesman Link to comment Share on other sites More sharing options...
Condor Posted July 30, 2013 Share #19 Posted July 30, 2013 The back Metz on my bike was just changed because it was cupped badly. the bike wandered in left corners and had a vibration and made noise. I had the suspension checked when the new tire went in and all the bearings and joints are fine. As soon as I put the new Michelin C2 tire on it I can now pick any line thru a corner and it is solid. When I picked my bike up it had 25 lbs of air in the back tire and about 30 in the front. The previous owner liked a softer ride, I guess, but it did cup the tire badly. IMHO Brian Here's a great tire wear article written in great detail. Scroll down to the cupping section and do some reading. Actually the whole thing is really worth looking at to understand tire wear and what causes it. http://www.rattlebars.com/tirewear/index.html Link to comment Share on other sites More sharing options...
Big Lou Posted July 31, 2013 Author Share #20 Posted July 31, 2013 on big trucks I have seen, where ,cheap chinese tires will cup and when i change the shocks they did do better ,,wore evenly,, that particular truck was a nickel an dime thing ,, will change fork oil soon . dont want to take it apart twice I will do steering head bearings at same time .. kill 2 birds with one stone Link to comment Share on other sites More sharing options...
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