[ausev] Dual electric motor questions

[Michael Bonard]

Jack,

Thanks you for your message. You have a very interesting offer on the 
table, and I will look at it more closely tomorrow. The main issue for 
me is the transportation: I live near Washington DC and transporting the 
car there may cost a fortune.. I need to do some research..

I will contact you back if I find a solution!

Michael



jefoy at mindspring.com wrote:
> Before going to other places to advertise, I thought I would start here. I have found that I just don't have the time to finish my project so I am putting everything I have gathered up for sale.
>
> To anyone interested, I have the following items:
> 1. GE 20 HP series wound motor with transaxle. Designed for a 120VDC system, this is an OEM Jet Electrica motor coupled to a 4-speed Chrysler transaxle. The transaxle is actually made by Volkswagen but uses axle flanges unique to the Chrysler (1981 Dodge Omni).
> 2. 1992 Infinity G-20 4 door. Straight body, manual transmission, new tires, bad motor (runs, but has rod knock). Clear title.
> 3. 4 used but good Trojan T-105 batteries
> 4. several very old 6V golf cart batteries, some hold slight charge, some are only good for trade in.
> 5. OEM 400 Amp SCR motor controller, made by GE for Jet Electrica. The controller and motor worked last time I had power on them (about five years ago), I actually drove the rusted out Jet Electrica up and down the street before parting it out. The controller is large and while it is useable, it would probably be best to plan on using a more modern controller. It can be used for initial test runs or to drive with while waiting on a better one.
> 6. 120V ferroresonant charger of unknown condition. I have never applied power to the charger but since it is just a transformer and some diodes, there is no reason to suspect it would not work. Like the controller, I know there are more technically advanced units available but as a spare or to get you up and running, it is there.
>
> Motor, controller and batteries are located in Bryan, Tx., Car and charger are in Round Rock. $1000 takes it all.
>
> Jack 
>
> -----Original Message-----
>   
>> From: "m. edmund howse" <bytedawg at bytetamer.com>
>> Sent: Jan 31, 2008 5:14 PM
>> To: mbonard at gmail.com, AustinEV News Announcements and General Discussion <ausev at austinev.org>
>> Subject: Re: [ausev] Dual electric motor questions
>>
>> Hello Michael,
>>
>> Welcome to the group. I'm kind of new here also but from what I've been 
>> reading I'm sure lots
>> of answers to your questions will abound. I can't help with the problems 
>> of torque but I can tell you Craigslist is a good source of donor cars. 
>> I've seen a lot of vehicles sell really cheap. But then there are also 
>> people who
>> want a fortune for a junker. My donor vehicles are a 86 toyota MR2, 86 
>> nissan stanza, 82 toyota landcruiser, and a 76 honda goldwing. Good luck 
>> with your projects.
>>
>> Marv
>>
>> Michael Bonard wrote:
>>     
>>> Hi,
>>>
>>> I am a new member of EVA - DC and I am preparing for a conversion using 
>>> a donor car (to be found..).
>>>
>>> I am looking for improving weight, reliability, and efficiency by 
>>> getting rid of the gearbox and differential: I would install two 
>>> electric motors (one on each front wheel). I would drive both motors in 
>>> parallel from the same DC-DC converter output. I am also looking for 
>>> using cogged belts to connect the motors to the wheels shafts.
>>>
>>> However, the following question came up:
>>>
>>> 1. How will the motors torque behave in a tight turn? Since the wheel 
>>> which is inside the turn will rotate slower than the outside wheel, the 
>>> inside motor will deliver a higher torque to this wheel while the outer 
>>> wheel will be driven with a lower torque..  I hope that his torque 
>>> difference will not be an issue in normal driving conditions. Is there 
>>> any member of this bulletin board with this type of experience who could 
>>> advise me before I commit to this configuration? I am pretty confident 
>>> that high speed turns will not be a problem (very low relative speed 
>>> difference between the wheels) but I have not been able to confirm this 
>>> SWAG.. Any recommendation would be VERY appreciated.
>>>
>>> 2. How will the DC to DC converter react to a dual motor load? Hopefully 
>>> it should not mind if I am not exceeding its rated amperes, but again I 
>>> do not have any confirmation.
>>>
>>> 3. Is there any member who could advise me on the cogged belt idea? I 
>>> think that it is lightweight, relatively inexpensive, very simple, 
>>> reliable, and allows a 3:1 or more "gear" ratio. I did some research and 
>>> found that today we have motorcycles and ultra light aircraft using 
>>> cogged belts passing 100 HP at 3000 rpm. This could be very promising..
>>>
>>> 4. What is the best "method" to find a donor vehicle with a dead engine? 
>>> I tried E-bay (not interesting, no dead engine to be seen) - and 
>>> CraigsList - a few hits only. The local wreckers claim they "never" see 
>>> a car with a dead engine (Hard to believe!). Any suggestion?
>>>
>>>
>>> Thanks for looking at these questions!
>>>
>>> Michael
>>> _______________________________________________
>>> AusEV mailing list
>>> AusEV at austinev.org
>>> http://www.austinev.org/mailman/listinfo/ausev
>>>
>>>   
>>>       
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