The edge connector on Card 4 splitting lengthwise
is also great for causing that.Another fascinating failure mode is the
sudden appearance of 8 motor speeds in Reverse. :)
One time is all it will take to break you of the habit of
absentmindedly mashing the throttle when backing up, expecting just 4
speeds. <G>
That's why I put two Molex® connectors attached with flying leads
on Card 4.My son hasn't quite got the hang of driving backwards that
fast yet.
RJ
Christopher Zach wrote:
harry
landis wrote:
Try ebay for DC-DC converters.
It's been my experience that pretty much all 48V nominal input
converters with a specified input range of 36-72V work fine all the way
down to 28V or so.
Thanks, I'll give that a shot.
This weekend I think I'll also pull the relay board and take a look at
the relays. For some reason speeds 5,6,7,8 aren't coming in (speeds
1,2,3 and 4 are ok as is cruise control). Normally that's because the
stupid shunt is loose in the body, which is causing card 4 to lock out
the high speeds. I wonder about that shunt; it seems to get hot pretty
easily.
And while in there I'll swap out the MOV on Card 1.
Chris
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