We made some good progress today in the Tinsmith's Shop. I mounted the newly painted shift lever and was going to finish up the brake and clutch cables until I realized I had forgotten to bring the cable stops along.
So we worked on the gas line. The engine had a short section of copper line in a metric size a little smaller than 1/4" and I had 1/4" line coming from the fuel filter bowl. I had been figuring on using a compression fitting to join the two lines, hoping the fitting would seal up okay, but uneasy about it.
Dan noticed that the old line coming from the engine had a tiny crack in it near the fitting to the carb. We were going to repair it with solder and then realized the old fitting was steel and was soldered to the gas line. Then Dan got an idea better than just repairing it.
He heated up the old fitting and removed the steel part from the metric copper tube. The micrometer showed a difference of 1/10,000 of an inch between the two sections of tubing so he sanded down the end of the new 1/4" line at a taper so that it would fit into the steel piece, then soldered it up. Nice. This way it is one piece of 1/4" copper running from the fuel filter bowl to the carburetor. Nice and clean.
We made a loop in the gas line using a spring to help make the bend without kinking the tubing. Now all that's left is for me to bring my propane flaring tool along next time to flare the copper line going into the fuel filter fitting. Then it should be ready for fuel.
I made up new fringed elk hide hand grips and got those mounted. They have foam inside are are comfy to my old hands. I'll finish up the cables next week, install the pedal chain and a few other things. Getting closer to liftoff. Pretty soon.
SB
So we worked on the gas line. The engine had a short section of copper line in a metric size a little smaller than 1/4" and I had 1/4" line coming from the fuel filter bowl. I had been figuring on using a compression fitting to join the two lines, hoping the fitting would seal up okay, but uneasy about it.
Dan noticed that the old line coming from the engine had a tiny crack in it near the fitting to the carb. We were going to repair it with solder and then realized the old fitting was steel and was soldered to the gas line. Then Dan got an idea better than just repairing it.
He heated up the old fitting and removed the steel part from the metric copper tube. The micrometer showed a difference of 1/10,000 of an inch between the two sections of tubing so he sanded down the end of the new 1/4" line at a taper so that it would fit into the steel piece, then soldered it up. Nice. This way it is one piece of 1/4" copper running from the fuel filter bowl to the carburetor. Nice and clean.
We made a loop in the gas line using a spring to help make the bend without kinking the tubing. Now all that's left is for me to bring my propane flaring tool along next time to flare the copper line going into the fuel filter fitting. Then it should be ready for fuel.
I made up new fringed elk hide hand grips and got those mounted. They have foam inside are are comfy to my old hands. I'll finish up the cables next week, install the pedal chain and a few other things. Getting closer to liftoff. Pretty soon.
SB
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