Recent Posts

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DC Motor / Re: DC Motors in SA
« Last post by Alf on May 24, 2018, 02:19:01 PM »
I'm thinking about a motorcycle EV build. I've looked at the stuff from Thunderstruck but was hoping I could find some second hand DC motors in South Africa.
Where should I go looking ?  I can't seem to find anything online. Thanks!

Golden motors have an interesting 15kW BDLC motor offer that would be great for a electric motorcycle,
https://www.goldenmotor.com/frame-bldcmotor.htm
 and the following company in Montague Gardens Cape Town (who import and sell their bicycle hub motor range) told me they could import a unit if someone was interested.
http://www.croozers.co.za/

PS I own a Zero DS .... LOTS of problems with the electrics and battery :-(
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DC Motor / Re: DC Motors in SA
« Last post by Barry Badenhorst on April 25, 2018, 12:55:30 PM »
There is very little interest in EV conversions by the South African Public. Therefore there is virtually no market for selling conversion kits or components such as motors etc. in the RSA and as a result, no business opportunity to do so. At this stage kits/components can only be imported at very high cost. From overseas, a good buy for a general purpose ev motor is this one. (https://kostov-motors.com/ev-motors/mtr-00332/). Locally you could perhaps consider a used forklift motor. A 10 kW 48 volt motor working from a 96V battery will work well for most EVs. Used forklift motors are available from Du Plessis Projekte, 1011 Van der Hoff Road, Claremont, telephone 082 414 6823 or 012 379 2287, email: dpprojects@lantic.net
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DC Motor / Re: DC Motors in SA
« Last post by tk512 on April 24, 2018, 09:25:34 PM »
I'm thinking about a motorcycle EV build. I've looked at the stuff from Thunderstruck but was hoping I could find some second hand DC motors in South Africa.
Where should I go looking ?  I can't seem to find anything online. Thanks!
4
EV Registration / Re: Anyone doing Motorcycle conversions?
« Last post by tk512 on April 24, 2018, 09:23:59 PM »
I'd be interested in finding out what components you used.  Also looking to build an EV conversion of a motorcycle, something like a KDX200.
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EV Registration / electric car conversion tutorial
« Last post by bellwether on March 27, 2018, 09:05:09 PM »
hello,my name is kwesi and im from ghana, im an electric car enthusiast and want to learn the basics of converting cars into electric. i honestly dont know how to go about it and i will be glad if someone on here can walk me through it, i can come over to south africa for a few days for practicals just to be familiar with the whole process and gain some experience.i picked one email on the forum and wrote the person but i didn't receive a reply from him, i will be glad if someone can get in touch with me please.
email: kwegyirkwesi@gmail.com
whatsapp: 00233264896452
                                            thanks
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EV Registration / electric car conversion tutorials
« Last post by bellwether on March 27, 2018, 09:02:10 PM »
hello,my name is kwesi and im from ghana, im an electric car enthusiast and want to learn the basics of converting cars into electric. i honestly dont know how to go about it and i will be glad if someone on here can walk me through it, i can come over to south africa for a few days for practicals just to be familiar with the whole process and gain some experience.i picked one email on the forum and wrote the person but i didn't receive a reply from him, i will be glad if someone can get in touch with me please.
email: kwegyirkwesi@gmail.com
whatsapp: 00233264896452
                                            thanks
7
EV Registration / Re: Builds in progress...
« Last post by Leo on February 25, 2018, 05:43:53 PM »
Hi all - I have 2 sets of Golden Motors AC motor and controller combos to offer for sale. The smaller one is a 5kW (nominal) and 10kW (peak) unit with a square wave controller and the larger one is a 10kW (nominal) and 20kW (peak) unit with a full wave, field-orientated type controller featuring high Starting torque and quiet operation
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EV Registration / Re: general
« Last post by Barry Badenhorst on February 18, 2018, 06:47:48 PM »
With 8 x 105Ahr 6V batteries the amount of energy stored will be about 105x6x8 =  5040Whr. Due to the Peukert effect of lead acid batteries the amount of energy available from this battery, while delivering currents as required for an EV, will be approximately half of 5040Whr. A beachbuggy typically has an energy consumption of around 100 Whr/km. Therefore the range you can expect is more or less (5040/2)/100 = 25 km.

Lithium batteries do not have this Peukert effect and they last for thousands of charge/discharge cycles. (3 years v.s. 10 years). They are also less than a quarter of the weight of lead acid batteries and will therefore contribute to improve the EV's energy consumption. (less weight,more range). In the longer term, it is more cost effective to use lithium batteries in stead of lead acid batteries. You can order lithium batteries, suitable for EVs, from this local site.

http://www.freedomwon.co.za/e-mobility/e-mobility-in-motion


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EV Registration / Re: general
« Last post by Alan1234 on February 18, 2018, 02:39:41 PM »
Hi, I've put an electric motor in my beachbuggy and love it !! .. 7.5kw series motor with curtis controller at 48v. my battery layout is 8 105ah lead acid deep cycle batteries.. 2 banks of 4 wired in series, paralleled together.. it goes along at 70 to 80kph but only has a range of about 25 to 30 kms.. any ideas how to cheaply increase this ??
 cheers Alan Port Elizabeth..     :-)
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Components / Re: EV conversion kits
« Last post by johanb on December 12, 2017, 12:27:39 PM »
Ask Armunt to add you to the EV whatsapp group,, he is on this forum as well,, there are few people that can help forklift motors.. Santos would be the best person to chat to
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