Smogbob .... my friend .... (It's Christmas ... !)
We are just pointing out that if you slam your brakes on you usually slide forwards!!
Happy new year to you and yours ..
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When you get it sorted would you consider a version that will fit 1200 hexhead pillion seat?
Wow, having joined this place have you seen sunlight since?
How's about a nice wicker basket?
Only joking, I think it's a sound idea. If you're going to the troubles of making it out of metal, whatrver lock you fit should make it properly secure.
Slam your brakes full on and see how far you slip backwards, its not much but plenty to brake your spine, if you hit something, just trying to help the OP with his design, so no idiot reason to try and wreck the thread.![]()
I think respect of the lock could you provide a hole that’s compatible with the Bmw barrel so that is could be keyed to the rest of the bike. I know that might be expensive but if you could use the hole for your own type of lock ( like a hinges bent U shape that goes out through hole and the user can afix a padlock ( combination type if necessary !)
Could you make the lock utilise the locking pin for the seat on the bike, so the lid would be the bit connected to the pin?
Advantages:
Can’t see any lock
No extra keys or locks with same or extra keys
Disadvantages
Might have a rod tube to load around
Sealing, although if the rod went into a tube that could be part of the solution
To help with angles the locking pin could be free to inserted afterwards, this could mean the looking pin has other uses such as incorporating a helmet lock.
Couple of obs from me -
Material - SS looks good, but will be scratched to buggery after the first outing - then will look cheap (like ally)
I'd have looked at some simple steel plate, and either painted with a HD paint or powdercoat, or as an alternative checkerplate
Hinge - on the short edge can become subject to a lot of rotational forces - X & Y axis -
I'd have gone for a hinge on the longer side and used either a piano hinge, or a couple of shorter ones -
Box lid - Checker plate - if you strap any thing to that it will slide around and mark the top.
Its a nice piece btw - but looks very form over function?
I think respect of the lock could you provide a hole that’s compatible with the Bmw barrel so that is could be keyed to the rest of the bike. I know that might be expensive but if you could use the hole for your own type of lock ( like a hinges bent U shape that goes out through hole and the user can afix a padlock ( combination type if necessary !)
Hi fella brilliant idea in theory but too onerous & expensive to design and make I`m afraid, but thanks for your input.

I’ve just put my coat on in case I need to dash off... it’s just a thought, but instead of making a box why not design a base plate with some sort of quick release mechanism, maybe even similar in operation to the alloy top box fixing system, but specifically for one of (the most suitable size - not sure which one that would be) these... https://peliproducts.co.uk/cases/pr...7qwTWfZmVRVtgbtVqVrC-wZ2RHO86pr8aAmGtEALw_wcB
Obviously, part of the quick release would become permanently attached to the base of the case, therefore the case would have to be adapted to accommodate it. I’m sure this would void the warranty offered by Peli, but the cases get such good reviews I can’t see that a specially designed and properly attached base plate fixed to its underside wouldn’t affect the integrity of it at all.
It’s only an idea and may not be viable, but just thought it might be worth consideration. Also... the Peli cases have that techy, rugged look about them, as if they’ve been designed to be bolted to an adventure bike.
i will have one.