Picked up a vintage Large Coleman PEAK 1 backpack with the large frame; and then got a MOLLE II pack with Main Ruck and Modular Sleep System carrier on Gen 2 MOLLE frame; decided to see how the MOLLE bags interface with the large Coleman PEAK 1 frame…. it works beautifully! I have extra space on the frame for the lashing of other things, or if I remove the MSS carrier, another Main Ruck bag!
Coleman Peak 1 pack, it is roomy, and very nicely made, just very old. (1989 date on the hardware)
Side view of the thing.
Suspension view, the straps and belt are not comfortable at all for me.
So I put the MOLLE II suspension from the stock MOLLE gen 2 frame on the far right side, onto the large Coleman frame on the far left, in the middle is the small “Junior” Peak 1 frame that is useful with the ALICE series of bags but cannot interface with the MOLLE bags due to the MOLLE bags attachment points being much wider.
Frames without bags, one could lash a lot of items to the frames if so desired.
MOLLE Main ruck, with MSS carrier attached to the bottom, and MOLLE Sustainment Pouches attached to the sides, I’ve had the Sustainment Pouches for a long time, going back to my old bike packing system..a few years, and they are still holding up very well!
bare side to attach to the frame
Upper pack bag’s attachment points, a short strap on the top, and a metal tab thing midway
Another view of upper bag’s attachment, mid tab, then bottom tab by the shoulder strap attachments
MSS carrier bag’s attachments, all 4 of them are in use, and again, they are the metal tab system, and they fit the frame as if the frame was designed for it
Complete MOLLE II backpack on the Large Coleman Frame; there’s about 9-10 inches of space between frame bottom and bottom of MSS bag for the lashing of items.
Suspension side showing how the pack looks with the frame attached, theres another gap between top of frame and top of pack, again for lashing items, or as a very convenient carry handle.
Sideways view of pack on frame, you can see how it is rather large and bulky, but should be excellent for winter trips or group camping! Or long travels as well!
The MOLLE Suspension system is very comfortable, and effective…although it is very heavy, it gives one a feel of being bombproof and able to take on just about anything short of shrapnel damage or flames.
I paid $10 for the Coleman Peak 1 backpack system, plus $50 for the MOLLE main ruck, and I think $15 for the pair of Sustainment Pouches, so the total invested would be around $75, for what amounts to two complete backpacks, and the results is that I now have a very comfortable, very sturdy backpack system, and due to the metal tab attachments, I can quickly remove the pack bags if I need to just lash things to the frame.
Cascade Tactical 
Wow, very nice find. I’m 6’4″, and prior military, so I’m used to the DEI molle frame and the alice frame not really being long enough to be comfortable, but I always just “rucked on” (hehe).
I’ll have to keep my eyes out for the Coleman frame. How durable would you say it is? Pretty sturdy?
It is pretty durable, but more flexible than the stock DEI frames… I was able to modify a Large ALICE by way of cutting main compression straps and then threading a couple of metal tri-glide buckles and sewing up so as to make a MOLLE Ruck style attachment tab system for the top; and attached to a JR sized PEAK One frame, which is shorter than the Large Adult one by about 10 inches, and narrower by about 2 inches. That worked better than the other attempt with the bobcat/strap method on the Medium ALICE pack. I sold the modified Large ALICE and the smaller frame a while back, have just the two large Peak One frames and no MOLLE rucks anymore, but was planning to sew up a new large ruck for the frames.
Nice, I’ll have to give that a try. Already have the 2 main straps cut from adding fastex buckles, so would just need to get my hands on a couple metal triglides. I might have to give that a shot, see how it works on my DEI 1606 frame. That would allow me to fully attach the back pad part of the molle shoulder straps.
Dunno why I didn’t think of that before. lol
Also, how well do you think an Alice pack would fit to it?