Anything I can do to cure a weave?

[gbrand42]

My new bike has a slight weave at around 85, which is just around the speed I like to sit at on my private test track

It only does it when I have the top box on. It's not really bad but it would be nice if I could get rid of it.

I know little about the workings of suspension but was wondering if adjusting the preload up or down a bit might help.

Anyone with any knowledge care to offer an opinion?

Cheers
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Yamaha RD50M, Honda C90, Yamaha RS100, Yamaha RD125LC, Honda XL125 V9 Varadero, Honda NT700VA, Honda VFR800X, Honda CRF1000L, Honda ST1300 Pan European

[MarJay]

I doubt adjusting your suspension will help. You need to change the weight distribution and aerodynamic properties of the bike. A screen might help, but personally I'd ditch the top box.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F; Cheap project: CBR900RR FireBlade
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[Busa1340R]

I would at least check tyre pressures and check for abnormal tyre wear. Bit more air in the rear tyre and maybe a stiffer rear spring may help. Are your head bearings smooth and correctly adjusted? And what about your rear suspension linkages.

But ultimately as above......ditch the topbox....get a tank bag if you have to carry sh1t. I have found that rucksacks can equally cause a bit of a weave at speed.

Other opinions are available........
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Current: 2010 Suzuki GSX1340R Hayabusa, 2013 Yamaha YP250R X-Max Sport - Previous: Triumph Sprint ST1050ABS, Honda XL600V Transalp, Honda NT650V Dullsville (don't ask!), Kawasaki ZX9R E1, Honda NX650 Dominator, Suzuki GSX1300RKZ Hayabusa, Honda CBR1000FM, Kawasaki GPZ500S, etc etc

[gbrand42]

Thanks guys, I thought as much. TBH I only keep the topbox on to sling my helmet in while I'm at work, can just as easily take it in with me. to you both
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Yamaha RD50M, Honda C90, Yamaha RS100, Yamaha RD125LC, Honda XL125 V9 Varadero, Honda NT700VA, Honda VFR800X, Honda CRF1000L, Honda ST1300 Pan European

[Suntan Sid]

Murray explains it all:-

https://www.bikechatforums.com/viewtopic.php?t=276208
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"Everybody needs money, that's why they call it money!"

[hachi8]

Rogain?
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K7 GSXR 1000 - The Beast!

[hachi8]

Rogain?
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K7 GSXR 1000 - The Beast!

[Carvel]

[cb1rocket]

Worn shock absorbers
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Honda H100S2 Rebuild - https://www.bikechatforums.com/viewtopic.php?t=253852

[Matt B]

[Slacker24seve...]

The top box (weight thereof or aerodynamic effects of) could be exacerbating a problem that would otherwise go unnoticed. I would thoroughly check the following:

Wheel alignment
Wheel balance and bearings
Suspension condition and function
Tyre pressures and condition

Re: Pan weave, didn't the police ditch them when they noticed they started weaving at 100+?
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Triumph Daytona 675 track bike + girlfriend's Honda Hornet 600
Selling a hack/winter bike for less than a grand? PM me.
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[Matt B]