[Henners]

We have 3 Spirit packs (two people with bad backs and 1 person is 5'0") and for ECCC we drilled 4 holes and zip tied the shell to the Alice frame which works well but we're building proper motherboards for it.

Any assistance on the size of the L Bracket I should get?

You can see our zip ties in this picture

[CountDeMonet]

These packs are not heavy so I'd just get some cheap 1 inch L brackets. I 3d printed mine for my son's pack and it's about the same size but a lot heavier. Gorilla glued to the shell and works great.

This is what I made for mounting my sons pack
https://github.com/CountDeMonet/Arduino ... _mount.stl

[Henners]

These packs are not heavy so I'd just get some cheap 1 inch L brackets. I 3d printed mine for my son's pack and it's about the same size but a lot heavier. Gorilla glued to the shell and works great.

This is what I made for mounting my sons pack
https://github.com/CountDeMonet/Arduino ... _mount.stl

Thanks! I figured metal ones were over kill for this, hence looking for alternatives. Do I need to tap the hole at all?

[CountDeMonet]

the 3d printed ones have a spot for a lock nut. I think they are #8 screws and lock nuts. Could be #10 I don't remember.

[Henners]

the 3d printed ones have a spot for a lock nut. I think they are #8 screws and lock nuts. Could be #10 I don't remember.

You made this even easier than I could have hoped. Thanks a ton

[khazara]

Spongeface has a kit now specifically for mounting the Spirit pack to an ALICE frame!
viewtopic.php?f=31&t=44232

[Strider61785]

I found some l brackets at home depot. They are not to wide and have pre drilled holes so tapping them was easy and the ones I got fit in the upper channels on the pack. I also made a mobo out of thin plywood.

[roofgoof]

do you by chance have the part numbers for those brackets?