Friday, November 18, 2011

Brand used transmission

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!

Monday, November 7, 2011

NEAT EV Rally results

The Topsail Electric Vehicle Team travelled to the 17th annual NEAT EV Rally in Northampton County this past weekend at the NCCAR facility. The students competed in seven events and tied for first place overall in the competition. The team had many compliments for their attitude and work ethic. They represented Topsail High and Pender County with class and always. One instructor even wanted to take Ryan Mowrey back with him to show his students how to act!  The weather cooperated for the most part, and the vehicles performed very well.  Our truck, nursing a battery with a bad cell was only able to manage 12 laps of the NCCAR 2 mile track.  The Toyota MR2 drove 56 miles in the range and could have travelled another 25 miles but had won the event.  The lithium batteries make a huge difference in the range and performance of the car. 
  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:
First overall
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

Water Miser Vent Caps

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.