Current favourite GS video on youtube! Enjoy!

LBJ GSA

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yes - unfortunately he had a bad smash and was quite injured........he loved his GS and is struggling to get back on a bike i think
 
From his comments, I think he's getting there. The scary thing is, the accident is inexplicable. The dude can ride obviously. Cast wheels, not spoked. Tyres all good etc.......
 
Pads can/do get pushed back in the calipers during a voilent tank slapper......the lever would have recovered pressure but there wasn't enough time, unfortunately.
 
I will say. Looking at the video on the first post the front end does seem to be to be rather unstable. Lots of shimmering about. Mine does nothing like that. Steady like a rock
 
Looking at the bike as it flys over him i woild say a front blow out , the tyre looks deformed. I had one years ago and had very similar reaction from the bike . Luckily i was on a slightly more open corner and not going too fast.
 
LBJ GSA said:
From his comments, I think he's getting there. The scary thing is, the accident is inexplicable. The dude can ride obviously. Cast wheels, not spoked. Tyres all good etc.......
Click to expand...

He was running on spoked wheels, not cast on the day of the accident, could that have had an influence in the crash,
Considering the recent problems with loose spoke’s ?
 
The Nutty GSer said:
He recovered from the tank slipper, then steered off-road :nenau
Click to expand...

I don’t think he did recover, even without any brakes he went off the road without attempting to lean into the turn - probably being in 5th gear didn’t help. At the point he left the road the front end looked fine. To me he lost the back end first, over-compensated, lost control and went off. Doesn’t explain the lack of brakes. I guess with the heavy front end impact and the bike somersaulting it’s be hard to separate the cause from the crash damage?
 
Matty589 said:
I don’t think he did recover, even without any brakes he went off the road without attempting to lean into the turn - probably being in 5th gear didn’t help. At the point he left the road the front end looked fine. To me he lost the back end first, over-compensated, lost control and went off. Doesn’t explain the lack of brakes. I guess with the heavy front end impact and the bike somersaulting it’s be hard to separate the cause from the crash damage?
Click to expand...

Nast incident - this seems a possible explanation.
I have looked a couple of times (now feeling sick!) and not seen any warning lights on the bike nor speedy reaction by rider on brakes/throttle/clutch at the initial point of wiggle.
Given his tight nearside line is it possible that a small gravel patch caused the back to step out on power?

:Motomartin
 
LBJ GSA said:
This (South African) dude blends fast / open roads with Europop.......leading to some happy, smiley, Friday meditative viewing! Despite the title of this video, there is no accident by the way. Just a nice blue sky ride. (He did unfortunately total the GS last year and is recovering as we speak)! MirageGP. Enjoy!
https://www.youtube.com/watch?v=ptes5453vDc&feature=youtu.be&t=141&fbclid=IwAR0afN6nr74RRb1eN3nHTudBoW9KwvYWtgjNuYdEnJAvqTJx9OZBZ6pLJ10
Click to expand...

I thought the place looks familiar. Near the Golden Gate National Park. Lovely place.
 
I'm not saying this was the cause, but in the Telelever design there is flex in the coupling of the fork stanchions to the steering head which might possibly exacerbate a head shake and escalate it into a full on tank slapper.

I only realised this when looking into the detaching fork stanchion fiasco. The geometry of the suspension requires that the fork stanchions are able to slightly change their angle to the steering yoke as the suspension compresses and extends. This movement is due to the attachment point to the lower wishbone describing an arc as the suspension moves though its travel, which in turn pushes the attachment point of the stanchions to the wishbone back and forth slightly, translating to a change in angle at the top attachment. This is accommodated by a rubber bush at the top of the fork tube where it attaches to the steering yoke. This might also be why test riders tend to say the steering feel on these bikes is not as good as on bikes with conventional forks which have a completely rigid attachment to the steering, and with modern designs very little flex in the forks themselves.

When I first bought a GS I was pleased to have the Telelever design as it has some advantages, such as little or no suspension compression due to braking, which also allows more compliant suspension, and allows it to keep absorbing bumps even under hard braking. However, now that I understand it has this inherent flaw I am less keen on it.

Fred
 
Rockred said:
He was running on spoked wheels, not cast on the day of the accident, could that have had an influence in the crash,
Considering the recent problems with loose spoke’s ?
Click to expand...


I thought he had cast wheels? Pretty sure that question came up in the youtube Q&A.
 
LBJ GSA said:
I thought he had cast wheels? Pretty sure that question came up in the youtube Q&A.
Click to expand...


Sorry - I got that wrong I just re-checked the video and comments. They were indeed spoked wheels. Apparently, even after the bike had flown through the air and had that impact, the spokes and wheels are fine. This was the first thing I assumed had gone wrong, but no. Starting to think he picked up some crap / gravel when he pulled over into the hard shoulder to stop prior to that corner. It's a mystery.
 
Matty589 said:
I don’t think he did recover, even without any brakes he went off the road without attempting to lean into the turn - probably being in 5th gear didn’t help. At the point he left the road the front end looked fine. To me he lost the back end first, over-compensated, lost control and went off. Doesn’t explain the lack of brakes. I guess with the heavy front end impact and the bike somersaulting it’s be hard to separate the cause from the crash damage?
Click to expand...

Exactly my thoughts. Not helped either if his tyres were a little squared off (I had something similar happen when cornering in the dry with a badly squared off front....got so far and the front shimmied a bit before recovery. Tyres changed...problem went away). I don't think that the tank slapper lasted long enough or was violent enough to push the pads back but whatever happened at the front might be a combination of suspension/brake/tyre issues, following the back letting go first. That upset the stability of the bike mid corner. Whatever the cause, we can only speculate but the poor so-and-so sustained serious injuries from what looked like it could have been much less serious on softer ground. It isn't the falling off that damages you, it's the landing that hurts!
 
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