Favorite rear seat fuel bypass for touring?

[draco880]

All, taking the NC 700x from the Bay to PDX and would like to use the rear seat for more storage, without having to take things on and off to refuel. I see some pretty clever aux fuel tank mods; the issue is that my girlfriend does ride on the back on the rare occasion, so I need to maintain at least the ability to reinstall a normal rear seat. I have a T-rex rack with a top box, but the top box is mostly for commuting convenience and can be swapped out. Is there a favorite and ideally fairly simple way to get fuel into the tank when there's crap on the seat? I can do basic metalworking and the like, don't mind throwing some money at it if that's the easy option. Thanks for any advice.

 

[draco880]

Found a decent deal on a redundant fuel cap so I can put a line through; I suppose that I probably don't need an FI rated fuel line for a tank that's just gonna dump into the main tank, but it seems like a good idea anyway. I see most of the mods here are a line into the tank proper with a stopcock. It looks like the automatic systems run into the vent line, but it seems a touch simpler to just run a replacement fuel cap with a line through it and use an on-off valve to dump aux fuel into the main tank when running dry. Accurate?

 

[dduelin]

One mod is to remove the pillion seat cover from the front of the seat and cut a semicircle out of the front edge of the seat then recover. A bag on the seat won’t typically cover the “gas hole” and the seat remains usable for pillion.

Fuel Seat Mod

Since I have a 4000 mile trip coming up, and the dales seat rack is not available, I decided to modify an extra rear passenger seat to accommodate fuel fills easily while I have equipment attached to the back of the bike. Now my gear will be strapped easily to the handled and rear seat ...

www.nc700-forum.com

 

[GIGreene]

One mod is to remove the pillion seat cover from the front of the seat and cut a semicircle out of the front edge of the seat then recover. A bag on the seat won’t typically cover the “gas hole” and the seat remains usable for pillion.

Fuel Seat Mod

Since I have a 4000 mile trip coming up, and the dales seat rack is not available, I decided to modify an extra rear passenger seat to accommodate fuel fills easily while I have equipment attached to the back of the bike. Now my gear will be strapped easily to the handled and rear seat ...

www.nc700-forum.com

That's a fine idea....may look into that myself