Front suspension clunk/wander! - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 11 Old 08-26-2019, 08:24 PM Thread Starter
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Front suspension clunk/wander!

So today I really started to notice that my bike wanders or weaves down the road and if I let go of the handle bars they shake.

So I started to check stuff and the steering head bearings seems in excellent shape, the front wheel bearing is also tight and smooth.

When I hold the front brake and shove the forks down they clunk, see this video. The camera makes it sound way louder and worse than it sounds from the driver seat.

Also the front nose dives hard when I brake and feels extremely soft, I come from naked sport bikes so maybe this adventure bike suspension is supposed to be softer but its SOFT. Pre-load is one notch from all the way tight I believe if the screw heads on top of the forks are all the way down/in for tighter pre-load.

Do I have a broken spring or something?

Also the front tire is slightly weather cracked in the grooves and the tread is uneven, where ever there is a tread groove the outside part is lower than the inside, I tried to take a pic to show it.
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2007 Kawasaki KLR650 (Sold)
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post #2 of 11 Old 08-26-2019, 10:29 PM Thread Starter
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So I talked with a local suspension shop and he said that while its not impossible it is much more likely that its either the caliper or floating rotors.

2007 Kawasaki KLR650 (Sold)
2007 Yamaha FZ6 (Sold)
2006 Yamaha FZ1 (Sold)
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post #3 of 11 Old 08-26-2019, 10:32 PM
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What causes the hard nose dive? I have the same thing. Rode for years, but this bike (new to me) is putting me through my paces!
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post #4 of 11 Old 08-26-2019, 10:36 PM Thread Starter
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What causes the hard nose dive? I have the same thing. Rode for years, but this bike (new to me) is putting me through my paces!
Basically I am 260 lbs and the bike is sprung for a much much lighter rider, combine that with oil that is probably 30k old. It just needs to be sprung for me and some fresh oil.
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post #5 of 11 Old 08-26-2019, 10:52 PM
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I would first check the head baring. It's likely loos or worn out. Most of them are loose and then they tend to make noise rocking within the play they have. Google head baring stromtrooper and you will find plenty threads about it.

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post #6 of 11 Old 08-26-2019, 11:01 PM Thread Starter
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I would first check the head baring. It's likely loos or worn out. Most of them are loose and then they tend to make noise rocking within the play they have. Google head baring stromtrooper and you will find plenty threads about it.
Mine is tight, no play or notchiness

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post #7 of 11 Old 08-27-2019, 11:45 AM
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Quote:
Originally Posted by Delasangre View Post
Mine is tight, no play or notchiness
How do you KNOW it is tight, did you actually check it internally? Mine wasn't notchy or loose feeling either, yet when I actually checked them the lower main bearing locking collar was finger loose. My weave/wobble got better after I tightened mine, but it was most certainly still there. I installed tapered roller bearings, now I cannot induce a wobble/weave no matter how hard I try or how I am loaded up. So no.....you do not know they are good, this is a pretty popular upgrade on these bikes as well.

Replace your tires first and foremost as they do weird things, and yes the suspension only has .65kg springs and is extremely undersprung, plus your fork oil is likely trashed as well.
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post #8 of 11 Old 08-27-2019, 11:51 AM Thread Starter
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Originally Posted by Big B View Post
How do you KNOW it is tight, did you actually check it internally? Mine wasn't notchy or loose feeling either, yet when I actually checked them the lower main bearing locking collar was finger loose. My weave/wobble got better after I tightened mine, but it was most certainly still there. I installed tapered roller bearings, now I cannot induce a wobble/weave no matter how hard I try or how I am loaded up. So no.....you do not know they are good, this is a pretty popular upgrade on these bikes as well.

Replace your tires first and foremost as they do weird things, and yes the suspension only has .65kg springs and is extremely undersprung, plus your fork oil is likely trashed as well.
Correction: I cannot feel any play or slop in them by hand. I suppose this doesn't mean for sure they are good. I'm going to be doing wheel bearings so I might as well do the taper bearings too.
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post #9 of 11 Old 08-27-2019, 01:09 PM
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Correction: I cannot feel any play or slop in them by hand. I suppose this doesn't mean for sure they are good. I'm going to be doing wheel bearings so I might as well do the taper bearings too.
Its a very worthwhile "upgrade", not so easy to do....but the rewards and benefits are worth it IMHO.

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post #10 of 11 Old 08-27-2019, 01:17 PM Thread Starter
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Its a very worthwhile "upgrade", not so easy to do....but the rewards and benefits are worth it IMHO.
Planning to do front and rear wheel bearings and the head bearings, as well as the clutch basket and maybe even the rear sprocket spacer mod if it needs it.
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