31-10-13, 10:53 AM
A lot really depends on the crash bung/bobbin. Some are a lot more rigid than others and will transfer the stress to the frame, whilst others are more malleable and tend to bend or fail where exposed to too much stress. Some bobbins bolt in a one point, other at two points with a small T shape member.
I had the original Yamaha ones fitted, going through the belly pan, but after an low speed (~20mph) drop and short slide, this is what happens:
![[Image: 2013-09-21%2012.47.39.jpg]](http://fubaby.com/pics/2013-09-21%2012.47.39.jpg)
These have a T shape member, which tends to just give on a slide. Good in that it doesn't put too much stress on the frame, but bad in that the bobbin then bends flat against the crank cases and breaks the belly pan it's protruding through. They do bend back fairly easily with mallet, but one of mine is about the snap off completely. Seriously considering ditching the belly pan and going down crash bars route.
I had the original Yamaha ones fitted, going through the belly pan, but after an low speed (~20mph) drop and short slide, this is what happens:
These have a T shape member, which tends to just give on a slide. Good in that it doesn't put too much stress on the frame, but bad in that the bobbin then bends flat against the crank cases and breaks the belly pan it's protruding through. They do bend back fairly easily with mallet, but one of mine is about the snap off completely. Seriously considering ditching the belly pan and going down crash bars route.