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MR PopUp or Eberlestock MainFrame? Or budget option?

Dude, man with the insider info. They look nice.....so nice that the 28 and 39 might go dirt cheap! Which is my zone.

Although it won't have a rigid body, the horseshoe zipper with a flip forward lid will go a long way toward making the Pop Up a better pack in the tree (consider how the Treehouse lid flips forward).
 
You thinking about getting the Pop30?

In the unlikely event I do, it will be to dissect and learn new design/sewing techniques from.

Between the weather and topography here in AZ, I carry layers, a 100oz hydration pouch, and 15x binoculars pretty much everywhere, which requires a bigger bag.
 
In the unlikely event I do, it will be to dissect and learn new design/sewing techniques from.

Between the weather and topography here in AZ, I carry layers, a 100oz hydration pouch, and 15x binoculars pretty much everywhere, which requires a bigger bag.

Wow, even masters can still learn it seem. We bow to your craft all the time here!
 
In the unlikely event I do, it will be to dissect and learn new design/sewing techniques from.

Between the weather and topography here in AZ, I carry layers, a 100oz hydration pouch, and 15x binoculars pretty much everywhere, which requires a bigger bag.

well after you dissect it, want another project? ;)
 
I’d be interested to hear what @4090Sharps would suggest for those who have the PU28 what mods he would do (if any) if he had 0 to minimal sewing experience
 
I’d be interested to hear what @4090Sharps would suggest for those who have the PU28 what mods he would do (if any) if he had 0 to minimal sewing experience

Supposing I couldn't sew, owned a PU28, and needed to make it work right now for my needs/preferences:
  • Replace the front buckle with an ITW GT Cobra buckle (solely personal preference)
  • Replace every single buckle I could with open-ended ITW buckles or ITW Waveloc buckles as appropriate for increased modularity
  • Figure out a way to use the existing open webbing loops, open-ended buckles, Grimloc buckles, or whatever it took to use the MR Backstrap or Stick-it at the same time as the main bag, to increase my options for strapping gear to my pack (a load shelf frequently isn't ideal)
    • Alternatively, two sets of webbing and buckles could be added to the four unused webbing loops on the bag, to strap down a tripod, bow, etc.
  • Add a storage pouch to at least one side of the hip belt
If I could sew a little bit:
  • Add loops of webbing to the back of the bag, in-line with the original attachment points, so that I can attach my buckles there when I need to use the load shelf, and can cinch down a load without also smashing the contents of my bag/making them impossible to access--this and the narrow load shelf are big gripes I have with the pack.
I hope this gives you some ideas!
 
Supposing I couldn't sew, owned a PU28, and needed to make it work right now for my needs/preferences:
  • Replace the front buckle with an ITW GT Cobra buckle (solely personal preference)
  • Replace every single buckle I could with open-ended ITW buckles or ITW Waveloc buckles as appropriate for increased modularity
  • Figure out a way to use the existing open webbing loops, open-ended buckles, Grimloc buckles, or whatever it took to use the MR Backstrap or Stick-it at the same time as the main bag, to increase my options for strapping gear to my pack (a load shelf frequently isn't ideal)
    • Alternatively, two sets of webbing and buckles could be added to the four unused webbing loops on the bag, to strap down a tripod, bow, etc.
  • Add a storage pouch to at least one side of the hip belt
If I could sew a little bit:
  • Add loops of webbing to the back of the bag, in-line with the original attachment points, so that I can attach my buckles there when I need to use the load shelf, and can cinch down a load without also smashing the contents of my bag/making them impossible to access--this and the narrow load shelf are big gripes I have with the pack.
I hope this gives you some ideas!

I'd prefer buckles on the straps at the load shelf and back of pack, but seems like I'd need to have some sewing performed to accommodate that?
 
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I'd prefer buckles on the straps at the load shelf and back of pack, but seems like I'd need to have some sewing performed to accommodate that?
I think it could be done without sewing in a couple different ways, but with buckles you might not be able to route the straps under the frame the way MR has it.
 
The new 30 look like a Pintler bag. I see a few videos of people replacing the stock popup bag with others, guess MR figured they might as well do it themselves.
 
I think it could be done without sewing in a couple different ways, but with buckles you might not be able to route the straps under the frame the way MR has it.

I have a .5 stand and it has it's proprietary load shelf seat. Ideally I'd run that seat under the pack, which is doable as is with the meat shelf disconnected. I think that would be simplified with QD buckles.

Maybe a split bar repair buckle as a replacement for the slider? Thoughts?
 
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I have a .5 stand and it has it's proprietary load shelf seat. Ideally I'd run that seat under the pack, which is doable as is with the meat shelf disconnected, but still requires detaching at least one bottom strap. I think that would be simplified with QD buckles.

Maybe a split bar repair buckle as a replacement for the slider? Thoughts?

Split bar/open ended buckle (but might be a little tight getting it on to the loop of webbing), a G hook, or a snap bar repair buckle.
 
Supposing I couldn't sew, owned a PU28, and needed to make it work right now for my needs/preferences:
  • Replace the front buckle with an ITW GT Cobra buckle (solely personal preference)
  • Replace every single buckle I could with open-ended ITW buckles or ITW Waveloc buckles as appropriate for increased modularity
  • Figure out a way to use the existing open webbing loops, open-ended buckles, Grimloc buckles, or whatever it took to use the MR Backstrap or Stick-it at the same time as the main bag, to increase my options for strapping gear to my pack (a load shelf frequently isn't ideal)
    • Alternatively, two sets of webbing and buckles could be added to the four unused webbing loops on the bag, to strap down a tripod, bow, etc.
  • Add a storage pouch to at least one side of the hip belt
If I could sew a little bit:
  • Add loops of webbing to the back of the bag, in-line with the original attachment points, so that I can attach my buckles there when I need to use the load shelf, and can cinch down a load without also smashing the contents of my bag/making them impossible to access--this and the narrow load shelf are big gripes I have with the pack.
I hope this gives you some ideas!
I’ve eyed up the backstrap but seems to be a lot to attach to the front of the bag for my needs. The stick it looks promising though. May have to get one ordered to tinker
 
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