BMW on twisty and crash - Page 3 - Suzuki Burgman Forum
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post #21 of 43 (permalink) Old 05-16-2016, 10:27 AM
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But doesn't that pretty much make the case that if he wanted to avoid crashing, he should have ridden more slowly? That, really, that's pretty much all he had to do? That it isn't a "brake issue" at all, it was a "rider is going too damned fast issue" ?
Oh I agree, he was overriding the bike trying to prove he could hang with the big boys.

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post #22 of 43 (permalink) Old 05-16-2016, 10:51 AM
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I believe that is coming from motorcycle people who never rode a scooter. I think he hit some gravel or debris and slid out. It would have been interesting to see his speeds but he was passing everything in sight.
This seems the most logical explanation to me.

Tuna canyon is 15 miles from my house, dead ends at the beach. It is an AWESOME canyon to ride; one-way, little traffic, tight Twisties, never any cops. But it has lots of debris. It's not well travelled (just local residents mostly) or maintained. So especially after a rain, there's ALWAYS cr4p on the road, always. My guess is he just hit a patch and low sided.

All this stuff about over-cooked brakes, and MCs surviving it better is just BS. It actually didn't look that bad, he popped back up and was on his way in less than a minute. Just a dumb, over sped corner, hit some gravel and went down. No big deal. We should all be so lucky when we crash.
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post #23 of 43 (permalink) Old 05-16-2016, 11:30 AM
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I love Tuna Canyon Rd. it is a oneway technical and dirty road that is very unforgiving, mountain on one side drop off on the other. I have never seen anybody stop for one of the stop signs, there is not cross traffic.
Yep. I've been on Tuna Cyn. Rd (above Malibu), many times. It's poorly maintained, prone to washouts during rain, and always has dirt and rubble on it. The road is a test of one's judgement, not one's riding skills.
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post #24 of 43 (permalink) Old 05-17-2016, 03:43 AM
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Liam and Jeff know that road (I've been on it a couple of times -- actually, with Liam each time, and he pushes his ride a LOT harder than I usually do) so I'd trust their judgement there.

(I wonder how much it'd cost to rent a sweeper truck to make a pass through Tuna Cyn. ahead of a group ride?)

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post #25 of 43 (permalink) Old 05-17-2016, 05:44 AM Thread Starter
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Well he was all geared up and maybe a bit more sportbike experience than you too. A one bike crash is 99% of the time rider error but I still believe the Traction Control found on the 2016 model would have saved him, at least that time.
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post #26 of 43 (permalink) Old 05-17-2016, 10:53 AM
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Naa- no amount of traction control would have saved him- he hit some debris on the outer edge of the curve and his front wheel washed out. If that happens you're going down, and whatever brake modulation that traction control can do (and the only thing traction control can do is modulate braking) will only change the way you go down rather than whether you go down. He was going too fast for the conditions- Darwin's machine was kicking in.
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post #27 of 43 (permalink) Old 05-18-2016, 03:12 PM
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....the only thing traction control can do is modulate braking........
Are you sure?

ABS modulates the brakes, traction control modulates the engine output (usually via reducing throttle or spark).
There have been cheap traction control systems that use the brakes but I don't think the BMW works that way.
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post #28 of 43 (permalink) Old 05-18-2016, 04:54 PM Thread Starter
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I may be wrong but think modern TC would have made a difference. He didn't lose it by much and is a very good rider from what I see. On a one way you would use as much of the road as is required, which he did. In any event, he crashed.
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post #29 of 43 (permalink) Old 05-18-2016, 05:03 PM
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I was focused on the front wheel. It looked like he just went too wide and hit a patch of debris in the middle of his turn. If he was braking in the curve, then maybe ABS would have helped. (I tend not to brake while in a turn, but I'm a chicken) Anyway, if your front wheel sliding sideways, you're gonna eat the pavement even with ABS.

But yes- a lot of 'traction control' systems just modulate the brakes- the BMW would probably be one of the better ones that actually modulate the power, but only on acceleration.
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post #30 of 43 (permalink) Old 05-18-2016, 05:04 PM
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I giggled at the biker who stopped when he raised his arm for the car to pass with "caution". Cause you know, them cage drivers, they are completely out of control.
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