Ok...I've been thinking on getting and Aux fuel tank for a long while now ...You know, all those times when you work in your bike's carbs etc ----you have to take down the tank and mount it back again to test and down again to re-adjust ?
Here is a simple and cheap solution ...less than $10 compared with the buying alternative of $65 plus.
I made a short video for reference
Here is the list of parts you will need:
1- 5/16" Hose ID, 1/4" NPT Male Barb Hose/Tubing Fitting Connector
1- 5/16” Hose Adapter/Coupler
1- 1/4 NPT Brass Fitting, Coupler Male
1- 1/4" NPT Female Brass Mini Ball inline Valve,
3- Feet of 5/16 clear hose
1- Aluminum water bottle