Guru
Joined: 15/07/2006
Location: AustraliaPosts: 676
| Posted: 01:09am 25 Dec 2019 |
Happy Christmas everyone.....25 Dec 19
'Pretty Factory'. Thanks for the compliment. I always try to do good work. Always pushed my students too, to do good work. Got in trouble for it too from colleagues. A real classic is Hastings advertised 50 positions one year, 7000 people applied. 5 of my students applied and all 5 got in.
I sell them. They are from China.
I don't like putting prices in the blog because they change so easy, and I can't go back later to edit. I buy in US dollars, which the US/AU exchange rate fluctuates every minute. Here is a snip of the exchange for today so far
Permanent magnet brushless hub motor $750
Sinewave controller $700
Batteries 16 cells x 60Ah x $1.86/Ah $1785.60
Total, maybe $5000 or so.
Yes the speed controllers are programmable, so connect up a computer to adjust the settings.
I supplied batteries to Michael for his Electric Tractor http://www.engagingnature.com/
I think you would need bigger hub motors for a tractor than what we have in the quad bikes. I have the 12kW hubs in T-Rev. They go pretty good, but too fast for a tractor. If you are going to use the Suby gearbox and diffs etc then you don't want hub motors anyway. You would use a standard motor and make an adapter.
Maybe one of these might work, 20kW. Permanent magnet, brushless, water cooled.
Trev @ drivebynature.com