Archive for November, 2009

Pulling the driven clutch

Chris had to pull the driven clutch so he could take it home and work on the 3d modeling.  Here is a video of the tedious process.

Advertisements

Leave a comment »

Finished our first round of performance tests

On Saturday, we moved the golf cart from Anthony’s house over to Chris; where there would be less traffic and where we had access to long stretches of flat road.

Vodpod videos no longer available.

Our goal for today was to measure the performance of the golf cart. We would later use these results to determine the best way to integrate the electric drive and to set a baseline that we can compare our completed vehicle to. Some of the tests we performed include distance traveled per unit of fuel, top speed, and acceleration time. We performed three sets of fuel economy tests. The first test simulated city driving; heavy acceleration to top speed followed by rapid braking. This process was repeated until the fuel was depleted. The second test simulated high speed highway driving; the vehicle was driven at top speed until all of the fuel was used. Finally, the third test simulated low speed highway style driving; the vehicle was driven nearly 20% slower than top speed until the fuel was used up. For each of the tests, we performed at least 3 runs to reduce error.

Vodpod videos no longer available.

During the day, we ran into several setbacks. Within the first few minutes of testing, we had a flat tire.

Vodpod videos no longer available.

After a few hours,  we began hearing a grinding noise coming from the rear axle. Upon inspection, we discovered that the differential was nearly dry. After filling it with nearly a liter of lubricant, we stopped hearing the grinding noise. The extra lubrication also made the golf cart much easier to push around. Since the troubleshooting and repairs took more time than we had anticipated, we returned on Sunday to complete our tests.

Vodpod videos no longer available.

–  Jason

Leave a comment »

Fooling around with the DC motor

After a long night of report writing we decided to take a break and see what happens when we directly connect batteries to the motor.  The results were pretty interesting…

-Anthony

12 Volts

24 Volts

Leave a comment »

Completed repairs today

We spent today finishing repairs on the golf cart. Two weeks ago, we took the golf cart for its first test drive, but we weren’t able to keep it running for more than a few minutes. Today, we disassembled the carburetor and gave it a thorough cleaning. We also replaced the ignition coil and spark plugs. After a few tries, we got the engine to run continuously and we will begin making plans to test its performance next weekend.

– Jason

Vodpod videos no longer available.

Vodpod videos no longer available.
Vodpod videos no longer available.

Leave a comment »

Took the golf cart for a drive!

Today, we made a huge accomplishment. We have had the golf cart in our possession for nearly two months and we finally started the golf cart’s engine today. Today we changed the oil, and since I lost ours key, we replaced the key switch with a toggle switch. While it did not run perfectly smooth, we were able to take it for a quick test drive. Hopefully we will have it running good as new in the coming weeks.

– Jason

Vodpod videos no longer available.

Vodpod videos no longer available.
Vodpod videos no longer available.

Leave a comment »