I scored this RCI cell on ebay for $90 shipped.
It has a usable capacity of about 3.5 gallons. The flush cap/flange assembly was terribly hard to use and also leaked. The vent line rollover valve protruded a couple of inches into the tank and spit gas onto the pavement when the bike was on the sidestand.
So I opted for this 45° billet filler from Speedmaster. Excellent Quality.
I wanted to give the vent as much altitude in the tank as possible but I didn't want it hanging off the filler neck as I have often seen. I decided to "tap into" the unused 8AN fitting in the bottom of the tank. Literally. I tapped the fitting to 1/8"NPT from the inside. Then I installed a 1/8" nipple and 1/4" compression fitting and ran 1/4" aluminum tubing up inside of the filler neck to the absolute highest point just below the cap.
Sorry, no flash pictures from inside the tank. :O
The frame is constructed of 1 1/4" flat iron and connects to my existing homemade side and top case brackets.
I applied heavy duty automotive exterior molding tape around the perimeter. Very strong. I also lashed the tank to the frame with 36" hose clamps covered in 1/2" shrink tubing.
The ball valve is from Maple Farkles. $15 shipped. It comes with 3 handles. The lever pictured is most convenient.
https://www.maplefarkles.com/index.php/products/plumbing
I used this 1/4" hydraulic hose coupler from Tractor Supply. $20
The bulkhead fitting also came from Maple. $20 shipped.
https://www.maplefarkles.com/index.php/products/plumbing
I always intended to add a stem to the bulkhead fitting inside reaching upward slightly to prevent the tank draining completely in the event the transfer line is ever severed. I also wanted the ability to see the fuel transfer in progress. The stem turned out to be a necessity in getting the bulkhead fitting to the hole.
I had to remove the tiny reed valve (behind the black plastic cover) in the cap. it was so sensitive it allowed the tank to hold enough pressure to prevent the gravity feed transfer. Now the cap vents both ways.
After some trail and error the system works well. I now have a total fuel capacity of 8.5 gallons. Transfer takes about 20 minutes. All told, this project came in at just under $250. My best advice is to choose your brass fittings wisely - they add up quick.
It has a usable capacity of about 3.5 gallons. The flush cap/flange assembly was terribly hard to use and also leaked. The vent line rollover valve protruded a couple of inches into the tank and spit gas onto the pavement when the bike was on the sidestand.
So I opted for this 45° billet filler from Speedmaster. Excellent Quality.
I wanted to give the vent as much altitude in the tank as possible but I didn't want it hanging off the filler neck as I have often seen. I decided to "tap into" the unused 8AN fitting in the bottom of the tank. Literally. I tapped the fitting to 1/8"NPT from the inside. Then I installed a 1/8" nipple and 1/4" compression fitting and ran 1/4" aluminum tubing up inside of the filler neck to the absolute highest point just below the cap.
Sorry, no flash pictures from inside the tank. :O
The frame is constructed of 1 1/4" flat iron and connects to my existing homemade side and top case brackets.
I applied heavy duty automotive exterior molding tape around the perimeter. Very strong. I also lashed the tank to the frame with 36" hose clamps covered in 1/2" shrink tubing.
The ball valve is from Maple Farkles. $15 shipped. It comes with 3 handles. The lever pictured is most convenient.
https://www.maplefarkles.com/index.php/products/plumbing
I used this 1/4" hydraulic hose coupler from Tractor Supply. $20
The bulkhead fitting also came from Maple. $20 shipped.
https://www.maplefarkles.com/index.php/products/plumbing
I always intended to add a stem to the bulkhead fitting inside reaching upward slightly to prevent the tank draining completely in the event the transfer line is ever severed. I also wanted the ability to see the fuel transfer in progress. The stem turned out to be a necessity in getting the bulkhead fitting to the hole.
I had to remove the tiny reed valve (behind the black plastic cover) in the cap. it was so sensitive it allowed the tank to hold enough pressure to prevent the gravity feed transfer. Now the cap vents both ways.
After some trail and error the system works well. I now have a total fuel capacity of 8.5 gallons. Transfer takes about 20 minutes. All told, this project came in at just under $250. My best advice is to choose your brass fittings wisely - they add up quick.