I like the concept of less seams for both ease of sewing and waterproofness on the roll top bag.
Roll top frame bag diy.
Save your frame warranty and use tape.
This is a must try method for securing cages or tubes or a pump or a can of beans or anything for that matter to your undrilled frame or fork.
Great job on both those frame bags.
In my opinion the frame bag is the crux of such a kit.
That depends on what bike you have.
Because of it s location the frame bag is ideal for carrying heavier items tp maintain a low center of gravity.
For most full suspension bikes a zippered frame bag is your only option.
A rolltop bag requires a mostly straight top seam and a fair bit of height to make the straps work.
This solves the sometimes annoying process of unpacking and re weaving the seat bag to the bike.
The biggest issue with seat bags is sway.
I like the form the zipper bag has due to the pattern and how it has the thin piece stitched all the way around the frame contact.
The exception is if you have a large frame in the style of the giant anthem trek fuel ex kona hei hei etc.
Supplies needed link to pattern.
I m definitely taking notes for when i build a roll top frame bag soon.
To protect your frame apply a little tape where.
For a secure mount use about 2 3 of a roll of electrical tape.