Nearly had a slapper !

[Chris G]

hmm,
On my way home tonight, left a mates house with a really long drive, accelerated full throttle thru the gears, got to just over 85 and a really strong oscillation, eased off the throttle and it went away. It proper caught me by surprise- it has done it before, but I have felt it coming on, tonight it was very instant ??


Anyone else had owt similar?

f800gs with tkc80 tyres BTW

 

[EggChaser]

Climbing Ditchling Beacon there are some ridges in the road where the steepness changes - some of them are close to bends resulting in you being leant over. I made the mistake of accelerating up these one day and as the front wheel went light over one of the ridges ended up in a really nasty tank-slapper with no warning - so guess it depends on the application of power, the road surface and the attitude of the bike at the time.

Not riding like that on that road ever again

 

[santrix]

Might be related. TKCs ridden on them many times and dif bikes and im yet to have a front that doesnt wobble over 85.... Probably not the best road tyre for those speeds. Apart from that, they're greeeaaaattt...

 

[Wreford Miles]

Only in my youth

 

[Diamaduk]

tkc80s

Same problem, front wheel wobble on tkcs on my xt 600 especially on windy days.

 

[Chris G]

Same problem, front wheel wobble on tkcs on my xt 600 especially on windy days.

Cheers for that, I had my money on the tyres, I will wear this set out, and put k60's on for a comparison, might raise the rear preload a touch to try to load the front tyre a little more

 

[Adventure Len]

hmm,
On my way home tonight, left a mates house with a really long drive, accelerated full throttle thru the gears, got to just over 85 and a really strong oscillation, eased off the throttle and it went away. It proper caught me by surprise- it has done it before, but I have felt it coming on, tonight it was very instant ??


Anyone else had owt similar?

f800gs with tkc80 tyres BTW

I've had mine in triple digits once with no bad oscillations but did get some fairly severe vibrations at that speed. Was only there momentarily and had no hard luggage mounted. In fact the only modification was a CalSci wind screen.

 

[Greggers]

Yeah me too .... hit 90ish on a good road, no luggage, no wind to speak of and the bars started to go schitzoid on me. I'm used to low-speed wobbles, but this is the first time I've had anything like it at speed - it gave me the willies for a moment until I slowed down enough for it to stop. Most likely the TKC's cos it was ok well into 3 digits on the 'Wings ..

G

 

[JohnnyBoxer]

Quality now, experience comes with age

 

[big_nige]

I've had mine in triple digits once with no bad oscillations but did get some fairly severe vibrations at that speed. Was only there momentarily and had no hard luggage mounted. In fact the only modification was a CalSci wind screen.

I had my 800gs up to an indicated 130mph last week with the topbox on & it was fine. Sever braking really does cause a lot of front wheel wobble though.

 

[Tim Cullis]

It's the TKC80s. As well as playing with the preload, try raising the pressure in the front tyre--it certainly helped me on the long ride down to the Pyrenees.

Tim

 

[everywherevirtually]

It's the TKC80s. As well as playing with the preload, try raising the pressure in the front tyre--it certainly helped me on the long ride down to the Pyrenees.

Tim

It is the TKC's as I've had mine up to 90mph just to see what they can do and I felt the wobble coming on. I had a mechanic yesterday at BMW pour cold water on the fact I had TKC80's on. I said I was off on a long trip and he implied I'd have to change them in 800 miles. I thought this was a little bit of billy bullshit considering I knew a certain Tim Cullis had ridden to the Pyrenees and back on them.

 

[santrix]

My mate 6k miles on his last summer including pyrenees, morocco and europe, dont abuse them and they go for about 6k i reckon...Full on abuse would prob get about 3-4k.. They will however flatten of very quickly to begin with with road use...

In the dry on roads they are superb, in the dry on tracks they are great, on wet tracks and mud they are pants... Luckily we didnt encounter the latter...