Chat about Hammerhead's Karoo in general.
14 posts • Page 1 of 1
That is a good response, but -- and here it comes -- does the "vertical" video of the fixed foot look weird to anyone else? Like the new foot is made from Flubber or something?
Hard to tell if that's the foot itself flexing or evidence of looseness/flexibility of the mount. Also curious that they say to not use an alloy mount. I assume that's because alloy will wear out the foot more easily, but perhaps it's because alloy is less flexible.
It does look awfully loose in the mount. But I wonder if that's deliberate, and they're putting it in a mount that has some play to simulate a worst-case (bad fit) scenario and therefore put maximum stress on the foot? I could be totally wrong, of course.
Also, in the "original" design video above, is it normal/"Ok" that the Karoo casing also comes apart? The same thing seems to happen in the other video that's part of the recent Hammerhead "Bracket Foot Update" blog posting. I imagine that it all snaps back together, but if there's a significant impact, is it OK that the halves of the Karoo may go flying off in different directions. The lanyard (if improved in the new design) would seem to tether the casing bottom to the bike, but what about the top/screen half?? Would the foot screw hold the two halves together if it's integrity wasn't being compromised as in the old design (just checked...doesn't appear so)?
Part of their blog post talks about the elasticity of the bracket foot and that it will deform before breaking. So in their drop test I think we're seeing that flexing in action. After that kind of drop you might have to replace the bracket foot, but because it deformed and held instead of broke and sprinkled sorrow on the asphalt.
The back cover is designed to pop off fairly easily. It doesn't expose any electronics and is not part of the weather proofing. You remove it in order to install a SIM.
Edit: Also, to be clear, the bracket foot and tether are in no way attached to the back cover. It has a hole in the middle so that the bracket foot mounts through the back cover and bolts into the main body.
I guess I've never seen or am not familiar with any sort of hard(ish?) plastic that would be suitable for a mount foot and still deform *that* much. It literally looks like it's made of rubber. I guess I'm willing to learn about it, though. To me, it looks like the mounting point (like the "Barfly" connection point mounted to the metal testbed) are different and allowing flex... a LOT of flex.ddimick wrote: ↑Wed May 16, 2018 2:58 pmPart of their blog post talks about the elasticity of the bracket foot and that it will deform before breaking. So in their drop test I think we're seeing that flexing in action. After that kind of drop you might have to replace the bracket foot, but because it deformed and held instead of broke and sprinkled sorrow on the asphalt.
Ahh - didn’t realise this. Not as bad as it looks then. Although maybe they should make that clear as a new customer may not know it either.The back cover is designed to pop off fairly easily. It doesn't expose any electronics and is not part of the weather proofing. You remove it in order to install a SIM.
I've got quite a bit of experience of drop and impact testing plastic components and using high speed cameras to record the events. It is quite striking to watch the plastic move that much but believe it or not that is actually not unusual. Some plastics are capable of buckling and regaining their shape so quickly that its impossible to detect at normal speed but when replayed in slow motion it appears to defy physics
Fear not, it's not made of flubber
Fear not, it's not made of flubber