Vented Gas Cap
Here are some pics of my vented gas cap. It seems to work very well. I got the idea of the cap from Baridco.
The brass cap gives a great vintage look. It is a cap for a washing machine hose. Through the center of the cap I drilled 1/16” hole. That is the smallest I have. For the tube inside the cap I bought a copper washer, 1/8 X 1 ½” brass nipple and a 1/8” brass cap. I soldered the brass nipple in the hole of the washer. I then ground the washer down so it would fit in the inside of the cap. I drilled two holes in the side of the nipple and 2 holes in the cap. I then used some permatex gasket maker to secure the copper washer in the cap. I replaced the washer.. The washer probably will not last. But I can make a new washer from some gasket material.
I have rode with this cap about 25 miles on bumpy roads and in warm weather with no seeping. I have tried to slosh gas out the cap, but the brass nipple and cap prevent this from happening.
Of course the lawyers make say don’t follow any of my advice, ideas, plans, etc