Re: (ET) E16 drive issues.

[Dean Stuckmann <dstuck lakefield net>]

Hi,
Thanx for the help. 

Here is some more info. I did the motor testing with the motor just on the 
ground. So there was NO resistance from belts or the transmission. Could 
that cause the runaway? But like I said it worked fine in reverse. In 
reverse the torque made the motor jump as it got up to speed almost 
immediately. In forward, the motor started at just a few RPM for the first 
few seconds but then started revving up to runaway after about 5 more 
seconds.

Also, I only know the BASICS of electricity. How do I check the field for 
field current? And at what conditions should there be some?

Dean

On Sep 22, 2014, at 6:04 PM, RJ Kanary <rjkanary consolidated net> wrote:

>                  I would inspect/verify the Field circuit. The diodes, 
> the FW Relay N/C contacts and the wiring.  Lotsa current and no GO is a 
> hallmark of weak or missing field current.
> 
> RJ
> 
> 
Verify you have field in forward. The old motor may have enough friction 
to prevent runaway. Should be a quick thing to check and possibly rule out.

> On 9/22/2014 6:13 PM, Dean Stuckmann wrote:
>> Hi,
>> Having some issues with my E16. Once in a while it would make some 
>> rapid jumps between what seemed like speeds 1 & 2. In rare cases the 
>> load was heavy enough to drag down the mower deck as well. And once in 
>> a while the motor would not turn on again, but I could hear the relay 
>> clicks like it should go.
>> 
>> Then it lost forward but reverse would still work. Now there is no 
>> drive at all but again the relays all click. So I started checking 
>> things and found that there was 36V across the armature in forward and 
>> reverse. The book says to replace the motor so I started trying some 
>> motors out of my parts tractors.
>> 
>> Motor one worked in reverse but had issues on forward speeds. Took the 
>> end cap off and saw that one of the brushes was cracked and melted the 
>> holder.
>> 
>> Motor two ran great in all 3 reverse speeds, but in even the slowest 
>> forward speed the motor started at a dead crawl and continued to keep 
>> speeding up to a runaway condition. (The original motor never runaway) 
>> Is that another motor issue? Or do I have controller issues?
>> 
>> Thanx for your help.
>> 
>> 
>> Regards,
>> 
>> Dean A. Stuckmann
>> 5432 Cty U
>> Newton, WI 53063-9624
>> 
>> 920-726-4312
>> dstuck lakefield net
>> 
>> 
>> 
>> 
>> 
>> 
>> _______________________________________________
>> Elec-trak mailing list
>> Elec-trak cosmos phy tufts edu
>> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
>> 
>> 
> 
> 
> ---
> This email is free from viruses and malware because avast! Antivirus 
> protection is active.
> http://www.avast.com
> 
>