Showing posts with label ev batteries. Show all posts
Showing posts with label ev batteries. Show all posts

Friday, May 23, 2008

Shifting


The transmission in the bus is the same as the original vw bus transmission. It attaches directly to the moter via a coupler, and an adapter plate bolts on to motor and tranny with just 4 bolts. So the motor just hangs off the transmission, cool! I have no clutch, which as it turns out is no big deal. I just have to be at a stop to get into 1st gear, and I don't use 1st anyway.

I start in 3rd. Because of the motors torque this seems to be the best gear, then after 30 mph I switch to 4th. shifting from 2nd to 3rd actually takes longer than just going straight from 3rd all the way, and seems to keep my amps to a minimum.

To switch gears I just let off the accelerator and the tranny switches really smoothly for me.

Blown connections


I had heard about blown connections and in the first few days of running the bus I had 3 connections melt on me. This picture shows a progression of the lead lug melting. (The deformed lugs were round to start with) So I had to use lock washers to keep my connections tight. I may switch to copper connections which seem to stay tighter for me than these lead ones, but at least the lugs melt before the battery terminals do, which I would be afraid might happen with copper lugs. They make a nice pop, get relay hot and my engine loses power immediately when they blow. Another reason not to go with this style battery I suppose.