Are you talking about frame sliders vs crash bars? In that case, crash bars are much better.
Or are you talking about frame sliders vs nothing? In that case, frame sliders are absolutely necessary.
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Which types would be good, and which would be bd?
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They need to be directly mounted to a hardpoint - a spot on the frame where multiple spars join, or an engine mounting point, something like that. Basically, the impact of the slider needs to be absorbed by the bike's entire frame. If there are some angled plates in between, or smth like that, then they are bad.
Ideally they would also be multi-part, with replaceable sliders on a fixed carrier. But that's less important.
They need to be of a shape that actually slides, and doesn't get snagged on asphalt/dirt.
They also need to be placed correctly - not too low, or the bike will simply tip over and snag on the upper body.
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Please let us know if you have any practical experience and what that is.
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I have crashed several bikes on the street and on light dirt, with both crash bars and sliders.
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Also, I think they could have an oppsoite effect in protecting the integrity of the bike, as it wouldn't help the bike slide, but the exact opposite - by snagging and transfering energy to a single point of integral value (frame, fork, wheel hub, etc) - causing far more serious damage to the bike than if the bike was allowed to slide on a much larger surface (the frame, engine, fairings, etc).
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In practice, that doesn't happen. If the impact was enough that the bike's frame failed, then you have probably also cracked the oilpan, ripped off the brake cylinders, etc. The frame slider gives you a chance to ride your bike away from the crash site. In my case, I had scratched up the fairings a bunch, but the only thing needed to ride away was a clutch lever change.
Hybrid Mode
