[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: (ET) Snowblower motor in E12?
I think the speed limiting shunt may tend to create a lot of heat. The
amp draw for the shunt coil and the way it limits speed may put the motor
in a very inefficient mode when it is lightly loaded. I would bet it does
better without the shunt if there is no motor runaway risk.
Rob
Sent from my iPhone
> On Aug 27, 2015, at 9:39 PM, Dean Stuckmann <dstuck lakefield net> wrote:
>
> I think that heat may be a problem for the blower motor. I put one on a
> home made sickle mower and on an 80 deg day that thing was so hot you
> could fry eggs on it in as little as 20 minutes. And the sickle mower
> does not take much power to operate...
>
> Regards,
>
> Dean A. Stuckmann
> 5432 County Road U
> Newton, WI 53063-9624
>
> 920-901-2288
> dstuck lakefield net
>
>
>
>
>
>
>> On Aug 27, 2015, at 11:54 AM, CZ <cz alembic crystel com> wrote:
>>
>> When blowing heavy wet snow I have managed to pull over 350 amps from
>> the NiCDs at 36 volts. Assuming 300 of that was the snowblower, that's
>> 16hp peak sustained (15-45 seconds)
>>
>> C
>>
>>> On 8/27/2015 12:28 PM, Rob Brockway via Elec-trak wrote:
>>> The snow blower motor that I had was a a monster. I have oftened
>>> wondered if anyone has done this. It is a series wound motor with
>>> some small windings to limit the motor speed with no load. The small
>>> winding drew something like 6 amps. I think the motor can generate
>>> 10-15 hp for short periods. Being a series would would require a
>>> diferent control circuit to reverse the field relative to the
>>> armature. You would not get as flat a speed load curve but it would
>>> have lots of power. You might put a switch on the speed limiting
>>> field winding to give you speed options and increase the efficency on
>>> the motor if you don't need to limit the speed to 3600 rpm.
>>>
>>> --------------------------------------------
>>> On Wed, 8/26/15, Bob Brandon <bobbrandon frontiernet net> wrote:
>>>
>>> Subject: (ET) Snowblower motor in E12?
>>> To: elec-trak cosmos phy tufts edu
>>> Date: Wednesday, August 26, 2015, 1:35 PM
>>>
>>> I notice the snow blower motor is
>>> rated 2.5 HP @ 66 amps/
>>> My E12 has original 1.5 motor with a Curtis controller.
>>> Would it be possible to replace the original motor with a
>>> compound wound blower motor?
>>> Bob Brandon
>>> _______________________________________________
>>> Elec-trak mailing list
>>> Elec-trak cosmos phy tufts edu
>>> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
>>>
>>>
>>> _______________________________________________
>>> Elec-trak mailing list
>>> Elec-trak cosmos phy tufts edu
>>> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
>>
>>
>> _______________________________________________
>> Elec-trak mailing list
>> Elec-trak cosmos phy tufts edu
>> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
>
>
> _______________________________________________
> Elec-trak mailing list
> Elec-trak cosmos phy tufts edu
> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak