But that's about as far as it goes. My compass has bearings. My turbo has bearings. 

Jim

Sent from my iPad

> On Jan 2, 2016, at 6:42 PM, Karl Wolz <wolzphoto@q.com> wrote:
> 
> Both have bearings. 
> 
> Karl Wolz
> Sent from my electronic umbilicus
> 
>> On Jan 2, 2016, at 5:29 PM, Jim Felder <jim.felder@gmail.com> wrote:
>> 
>> No, Edward best I can guess. Point is one has an electric motor the other does not..
>> 
>> Jim
>> 
>> Sent from my iPad
>> 
>>> On Jan 2, 2016, at 5:19 PM, Karl Wolz <wolzphoto@q.com> wrote:
>>> 
>>> You talkin to me??
>>> 
>>> I know the difference; have both. Both relatively low tech. 
>>> 
>>> Karl Wolz
>>> Sent from my electronic umbilicus
>>> 
>>>> On Jan 2, 2016, at 4:03 PM, Jim Felder <jim.felder@GMAIL.COM> wrote:
>>>> 
>>>> A swamp cooler is an evaporative cooler with a fan. Way different from a roof turbine. 
>>>> 
>>>> Jim
>>>> 
>>>> Sent from my iPad
>>>> 
>>>>> On Jan 2, 2016, at 3:42 PM, Edward Maglott <emaglott3@GMAIL.COM> wrote:
>>>>> 
>>>>> that sounds a lot less impressive.  it does mention furnace blowers as one
>>>>> of it's main applications.
>>>>> Edward
>>>>> 
>>>>>> On Sat, Jan 2, 2016 at 3:32 PM, Karl Wolz <wolzphoto@q.com> wrote:
>>>>>> 
>>>>>> I believe they're referring to the turbines mounted on home roofs. Low
>>>>>> speed and low resistance with no motor.
>>>>>> 
>>>>>> Karl Wolz
>>>>>> Sent from my electronic umbilicus
>>>>>> 
>>>>>>> On Jan 2, 2016, at 11:56 AM, David Beierl <dbeierl@ATTGLOBAL.NET> wrote:
>>>>>>> 
>>>>>>> I don't lay any particular importance to
>>>>>>> the "turbine" designation.  I
>>>>>>