Thanks the bag i have is bigger like the one with the yellow top I do like the tank bag but I allso would like a bigger tank look like it would still work, the wedge bag does look like it fits really good on the big tank. ThanksI have an older wolfman blackhawk ~9l bag that fits pretty well. it an angled style and i do not believe they make one like it any more.
I have been looking for another for our other TW and the closest i have found is this one but its been out of stock for months.
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We needed one for a trip so i ended up buying the current model Wolfman blackhawk which is 10L and it does not fit near as wall as the old verison on the TW with a Clarke tank. I made it work but it sits off the tank a lot more than the old one.
Here is a pic, you can see the difference in how they sit on the bike.