My Aux Gas Tank!

[Knizar]

This is the way I've always done it, just like you. "The pipe is connected to the vent outlet on the tank which would normally go to the canister (I've already removed that). This means that the main tank now vents through the aux tank. It also means that its just gravity fed with the main tank sucking through fuel from the aux tank as needed."
Where is the vent on the 2020 RT Limited. From your photo I take it, it is on the right side. Can you give me a general location? I have five aux tanks from previous bikes and I'm ready to mount one on my RT. Thanks in advance.

ldpost: 2019' ldpost:

 

[PistonBlown]

This is the way I've always done it, just like you. "The pipe is connected to the vent outlet on the tank which would normally go to the canister (I've already removed that). This means that the main tank now vents through the aux tank. It also means that its just gravity fed with the main tank sucking through fuel from the aux tank as needed."
Where is the vent on the 2020 RT Limited. From your photo I take it, it is on the right side. Can you give me a general location? I have five aux tanks from previous bikes and I'm ready to mount one on my RT. Thanks in advance.

On my 2011 RS there was plastic insert at the highest point of the tank just in front of the fuel cap (on an RS this is under the seat on the right). The insert had a pipe connector facing forward which would normally go to the EVAP canister. This is what I connected the Aux tank to.

I don't have an RT but I'm guessing it will be similar to my 2017 F3L with a centrally mounted fuel cap instead of the offset one of the RS. Canam have changed the design quite a bit with this and the fuel cap assembly is connected to the highest part of the tank with a short tube. There are two pipe connectors on the fuel cap assembly, one that goes off to the EVAP canister, and other that seems to just go out the bottom of the Spyder. I'm not sure but I suspect the second one is designed to act as a direct vent if the tank was overfilled and probably has a oneway value in it (the EVAP is two way which is why I knew I could use that on my RS).

It's this second pipe that's stopped me doing the same as my RS because obviously the fuel could exit through the second pipe. Also this would mean the pipe would be going in very high after being lower down at the seat. Last time I just relied on gravity to feed fuel into the tank and that would be compromised with this layout.

What I've considered, but not done yet, is removing the tube connecting the fuel tank and cap and adding a pipe connector low down near the tank. Must admit I've not bothered with that at the moment as the range is better on the F3L and for now I just carry an 8 litre fuel bladder on the back:

 

[Leroy73]

I ran aux tanks on my last 3 motorcycles, 2 were carburetor so easy. Last was FI with a computer that was over-joyed to throw codes. Bought an electrical “plug” to make it “think” the canister was attached.

Question: will a 2022 RTL throw a code if canister is not connected?

I have 1.8, 3, & 5 gallon tanks. I’d be happy to use the 1.8 gallon thus allowing me to make 200 miles riding into a strong Texas wind at 75 or 80 mph. The 3 would be better.