Re: (ET) Seem to have lost speed 3 on New Idea 150

["Clean Power Supply" <cleanpower att net>]

 Under no load 2AH closes in 1st speed already.Yes,it does close a little 
more timidly than RTN. It's contacts complete a circuit *allowing* 2A 
contactor to pull in when throtttle goes to 3rd position.Under heavy load 
packvoltage drops far enough that there is not sufficient voltage 
available to energize 2AH coil and therefore you will not get any speeds 
after 2 unless you reduce load or hit the Power Pulse button which 
bypasses 2AH and allows 2A contactor to pull in.
 If you're missing 3rd speed but have the rest (and esp. if your power 
resistor up front gets hot when running above 3rd speed),very likely 
defective 2A contactor.
 Sincerely,
 Harold Zimmerman
 Clean Power Supply
 Ephrata PA
 717-859-4234
On December 22, 2010 at 9:08pm -0600, you wrote:
>When engaging the "throttle", the 2AH relay closes (but slower than the 
>RTN relay). As I go thru the speeds the 2AH never releases. Should it? 
>The way I read the EGT Circuitry manual, 2AH should not engage until 
>speed 3 is hit.
>
>I agree, the NI manuals suck, especially when I don't have an electrical 
>background.
>Dean
>
>On Dec 22, 2010, at 8:27 PM, RJ Kanary wrote:
>
>>           Verify the operation of the 2AH Relay that is the final 
>> arbiter when it comes to full armature voltage.No 2AH closure, no 3rd 
>> speed, no 3rd speed means no Field Weakening so you lose all the rest 
>> of them too.
>>
>>         BTW the GE diagrams are far easier to follow than the clones 
>> used by NI. :)
>>
>> RJ
>>
>> Dean Stuckmann wrote:
>>>
>>> Pretty sure it should have 7 F and 3 R...
>>> Maybe its 2nd that dropped instead of 3rd. Just trying to judge it by 
>>> how far I have to move the lever to have it change speeds...
>>> Thanx
>>>
>>> On Dec 22, 2010, at 3:37 PM, RJ Kanary wrote:
>>>
>>>>      The NI service information is available at
>>>>
>>>> http://www.elec-trak.com/
>>>>
>>>>
>>>>    How many traction motor speeds is this tractor supposed to have ? 
>>>> I've never seen any NI tractors here in Western Pennsylvania.
>>>>
>>>> RJ
>>>>
>>>>
>>>> Dean Stuckmann wrote:
>>>>>
>>>>> Hi,
>>>>> I think I dropped speed 3.
>>>>> There are only 2 speeds in reverse as well.
>>>>> It will go into the higher speeds (but still seems to skip 3) if the 
>>>>> load is small, but its reluctant to go faster when blowing snow.
>>>>> Power pulse button does not want to work either.
>>>>>
>>>>> I have the Service manual for GE but I don't know if the 150 is the 
>>>>> same as  any of the GE models. Maybe a E-16???
>>>>>
>>>>> Any help is appreciated.
>>>>> Happy Holidays.
>>>>> Dean
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Elec-trak mailing list
>>>>> Elec-trak cosmos phy tufts edu
>>>>> https://cosmos.phy.tufts.edu/mailman/listinfo.cgi/elec-trak
>>>>>
>>>>>
>>>
>
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