We developed a noise in our MR2 transmission and ordered one from a MR2 message board member in Texas. We decided to remove the old one after the NEAT Rally. When we returned, we removed the motor and transmission, cleaned up the new one and replaced the old. To our dismay, the "new" one had the same sound. After consulting with our "go to" mechanic, he agreed that it was one of two things. Either it had the same issue as the old one, or it is a noise that is inherent to the MR2 transmission. Well, we decided to replace the "new" one with the old tranny and take the "new" one apart to see what we could find. Stay tuned....We will take it apart soon and let you know what we find. On a side note, we are really good at removing the motor and transmission, having done so about 12 times in the past month!
Friday, November 18, 2011
Monday, November 7, 2011
We would like to congratulate the NEAT team for their results and thank them and their instructor Thomas Pope, along with Harold Miller, for putting on a fine event. We look forward to next year! We will practice the pit crew before the event this time.
The results were as follows:
Acceleration: First Ranger
Acceleration: First MR2
Range: Second Ranger
Range: First MR2
Design: First MR2
Autocross: First Ranger
Autocross: First MR2
Jeopardy competition: Second
Tuesday, November 1, 2011
Since the "speed caps" on our US Batteries had begun to crack and fail, we decided to get new standard type vent caps. EV Team member, Matt, did a bit of research and ran across a company called Flow Systems. They offer a better vent cap that reduces watering, hydrogen venting, prolongs battery life and keeps valuable electrolyte in the cells by using a hydrophobic cindered disc to return all water and acid droplets back into the cells. We installed the caps today and are looking forward to the minimal maintenance to come.
Friday, October 28, 2011
Monday, October 17, 2011
On a routine check of the batteries in the truck, we discovered a slight problem. The students had learned how to use a refractometer to check the specific gravity of the lead acid cells to determine the state of each cell in comparison to the rest of the pack. The results found the 14 month old US Battery US145xc batteries were within a few tenths of each other except for one cell was considerably lower than the rest. Upon checking it out further, we noticed the water level was lower as well, even though we had topped them off the day before. We also noticed that there was a considerable amount of oxidation underneath the battery box below where the battery in question was.
Thursday, October 6, 2011
Saturday, September 24, 2011
Wednesday, September 14, 2011
Today we made a presentation to the Cape Fear Society of Professional Engineers at Hugh McRae Park in Wilmington. All 10 EV12 team members were in attendance to show the vehicles and partake in the catered Bar-B-Que dinner. Also in attendance for support were our Chemistry teacher Mr. Jeffcoat and lead counselor, Ms. Rabe. The event was a great opportunity to show Professional Engineers what a group of High School students are capable of achieving. We were presented with a $500 check from Atlantic Tool and Die and also were able to have a 50/50 raffle to raise additional funds.
We made several very good contacts with area companies such as G.E, Corning, Sturdy Corporation, plus Cape Fear Community College and UNCW. We look forward to developing our relationships with these groups.
Friday, July 22, 2011
EV Challenge at the Plug In 2011 Expo this week in Raleigh. Not only were we able to gain experience about emerging EV technologies, we also were thrust into the spotlight as hundreds of vendors and guests viewed our MR2 and asked questions about our program. Wonderful exposure!
Three Topsail students, Stephen Henderson, Shelby Sessions and Ryan Berkey were on hand to field even the most difficult questions about the EV Challenge program and the MR2 conversion. Most notable was the typical reaction of "A High School did this?". Yes, it is out...High School students are capable of great things if given the proper education and motivation. Nothing like being able to convert and drive an electric vehicle to stoke the fires of creativity and passion!
Being the only non factory manufactured Electric or Hybrid vehicle at the show, the Topsail High MR2 seemed to stick out among the likes of the Volt, Leaf, ImEV, Focus and Prius. With the newly installed Lithium Ion battery pack, the MR2 can achieve close to 100 miles on a charge, a fact that was not lost on the onlookers as they marveled at the creativity and overall workmanship of the High School project.
Monday, July 18, 2011
Sunday, July 10, 2011
Wednesday, June 22, 2011
Initial observations are the MR2 with the Synkro has a tad bit less acceleration. On the plus side, gone is the horrible accelerator delay we had with the Raptor. This issue reared its' ugly head in Auto Cross events where you had to press early on the pedal in anticipation of the power surge....not fun.
Now to drive the MR2 and data log the results. The data logging will really help us to track the performance of our Lithium pack as well.
Tuesday, May 31, 2011
The following students won awards:
Troubleshooting - Zach Fouty, Sal Castoro First Place
Oratorical- Sean Bullock, Stephen Henderson First Place
Vehicle Design- Alexis Demetrious, Chris Raynor First Place
Range- Alexis Demetrious, Todd LeMaster First Place
AutoCross- Joseph Graves First Place
Modified Car Team:
Oratorical- Zeke Hartner, Joseph Graves Second Place
Vehicle Design- Tony Capace, Joey Godfrey First Place
Range- Tony Capace, Joey Godfrey First Place
AutoCross- Sean Bullock Second Place
Website Design- Shelby Sessions First Place
School Initiative- First Place
This has been by far the best class I have ever taught while a Topsail High School. They represented the school with pride, dignity and class. The class went into the competition with the motto "Dominate", and they did just that. As Sean Bullock said, "Preparation = Domination", a formula that has worked for THS EV for 8 years!