Making the tail
We were so busy getting Terry on the road, I did not have time to show you how we made his tail. The tail structure begins with the seat bulkhead. Because I don't have the bulkhead finished, we had to make Terry's tail structure of wood. We did not have time to bring it to a - point which would consume even less energy.
Fortunately, Alan Smith volunteered to spend the week helping out. Virginia Tech is building a Vetter Challenger and sent graduating engineering student, Justin Burr to California to help and learn. We are all grateful for his help.
|Five days before he wanted to leave, Terry returned with another battery to put on. He wanted to install four more chargers, too.||"It is just 160 pounds", he said "It will be OK"|
|To make the tail, we had to begin with the seat bulkhead. We sat Terry down and drew a line around him.||Then we sat each other down and drew lines around all of us. I took an "average", drew the bulkhead shape and cut it out of 1/4"plywood.|
|From tuft testing, we learned that we needed to "square-off" the top to continue the shoulder shape. I am not happy about the way it looks but that is the way it must be.||This will be a temporary tail to get Terry on the road as fast as possible. I reinforced the edges with 3/4" plywood. The floor would be solid plywood to carry the new battery.|
|Justin glues and screws the various wooden tail parts together. You could actually make a tail yourself like this if you wanted.||Terry was concerned that the extra weight could make his motor run hot. Then he noticed that his feet felt colder with the streamlinined nose. I decided to direct that cold air to the motor.|
|First I made ducting of cardboard. Then I replaced the cardboard with aluminum and taped it all together. His motor should stay cool and his feet should stay warm.||Here you can see one of two extra chargers Terry mounted. With the streamlining off, you can see the aluminum intake duct.|
|Andre Okazaki of Reproduction Decals made the classic Vetter lettering for me.||Alan and I shape and fit lightweight foam fairings that will help the wind slip by. We have one day to go.|
|After two years of use, I have come to believe that my "milk-carton" paper covered with pressure sensitive vinyl is the most durable, lightest and least expensive covering material we can use.||We carefully figured out the shape, took it off, laid it flat, covered it with the vinyl and put it back on using our Banana Tacks.|
|Terry wanted head home to Florida. We did not have time to finish bringing his tail to a point. I expect him back. We can finish it up later.|
"If fuel ever becomes precious, we will want to be streamlined"
Craig Vetter, 2008
Fuel is precious in electric motorcycles
Modified July 31, 2013
Posted June 2, 2013