Re: (ET) E20 lacking power - field voltages

[Jim Coate <jbc coate org>]

Interesting... speed 5 is notably different. Whoever posted this 
originally  didn't show the field voltage dropping until speed 6 so 
something may be amiss with speed #5. A smaller issue is why speeds 1-5 
show up 3 volts below pack voltage when there should be no resistors 
involved at that point.


SteveS wrote:
>  I was looking thru the troubleshooting guide and I noticed a table of 
> field voltages at different speed settings - we were discussing these 
> last week:
>
> Speed   Aprx DC voltage
> 1           36
> 2           36
> 3           36
> 4           36
> 5           22
> 6           15
> 7           10
> 8            6
>
> Looks like your measurements fall in pretty close.


> > > Based on Steve's suggestions I did some measurements
> > > this evening. The following table shows the voltages I measured in 
> > > the different speeds with the transmission
> > > Speed    Armature     Field    Battery
> > > 1         29.8        34.5      37.5
> > > 2         30.6        34.4      37.3
> > > 3         31.6        34.4      37.3
> > > 4         33.6        33.4      37.0
> > > 5         35.5        33.2      37.0
> > > 6         35.5        11.7      36.7
> > > 7         34.7         8.1      36.7
> > > 8         34.4         5.5      36.5



_________
Jim Coate
1970's Elec-Trak
1992 Chevy S-10 BEV
1997 Chevy S-10 NGV
http://www.eeevee.com