Rear tire rubbing seatpost bag

[woodsy]

I've recently purchased the Revelate Viscacha bag and have noticed on the bumpier terrain it rubs the bag if my suspension isn't locked out. I've found some tips for remedying this, but none prevent the rubbing altogether. Has this occurred for other bikepackers? On the trail I had to lock out my rear suspension, so it was kinda useless having a full suspension bike in this case. Is there a way to secure the bag so it's angled higher on the bike, or does that just depend on how much you have stuffed in the pack?

[harryonaspot]

you might consider a Portland Design Works Brindle rack

[AZTtripper]

I have had the same issues, glued a patch of inner tube on the bottom of the bag. Not pretty but gets the job done.

[dave]

My wife had this problem on our Colorado Trail trip this summer.  Here are some ideas, in order of how I'd try them:

1.  Pack the Viscacha differently.  We determined that by packing our sleeping bags or inflatable pads into their little stuff sacks and then packing these side by side in her Viscacha, it made the V's "height" shorter (the V was wider and didn't hang down as low since it was shaped like a sideways oval instead of a circle).  This gave her an extra 1-1.5" of clearance, which made a huge difference.   Always be sure you pack the Viscacha tightly and then strap it really tightly, as this prevents sagging. 

2. Try changing the angle of the V by changing which of the two slots the short strap with the buckles for the seat rails goes through. 

3.  You could also try taking a piece of foam pipe insulation, cutting it to length and cutting it in half down the middle (to make a long U shape) and then putting one or two layers of that behind your seatpost (so that the seatpost strap goes around both seatpost and pipe insulation).  --My wife needed to do that last idea because her Viscacha rubbed the backs of her legs, but it also changed the angle of the pack in a helpful way for the rear suspension.

4.  If none of that helps, sell the Viscacha and buy a Revelate Pika instead.  It's specifically made to help with this.

[MikPat]

I put a layer of Gorilla Tape on the bottom of my bag.  I also use a Voile ski strap to cinch it up tighter.

[vikb]

Has this occurred for other bikepackers?

On my FS bike with dropper I don't even try and use a full size seatbag. There is no way it would clear the rear tire. I use a large conventional seatbag, which is tiny by bikepacking bag standards, but does carry enough to be useful.