Search found 134 matches

by GRMarks
Fri, 19 Mar 2010, 03:20
Forum: Members Machines
Topic: My TZR 250 EV project
Replies: 94
Views: 28430

My TZR 250 EV project

Timothy 136 volts are the thunder sky's charged to 3.7 volts - they quickly drop to 3.2 volts (115 for the pack) multiply that by 100 amp = 11500 and then 80% of that (you will never want to try and get 100%) and you get 9.2 KW. With the kelly controller you can set a maximum voltage so you could se...
by GRMarks
Tue, 16 Mar 2010, 03:51
Forum: Members Machines
Topic: My TZR 250 EV project
Replies: 94
Views: 28430

My TZR 250 EV project

I have sorted out my confusion on batteries and voltage. Mark from enertrac got his test bike up to 80 MPH on 102 volts (using 3.2 volts for the thunder sky batteries) so my 115 volts should still give me reasonable voltage when the batties are low (2.5 volts X 36 = 90 volts minimum). By my calcs I ...
by GRMarks
Sat, 13 Mar 2010, 04:55
Forum: Members Machines
Topic: My TZR 250 EV project
Replies: 94
Views: 28430

My TZR 250 EV project

Thanks Richo - that looks better.
by GRMarks
Fri, 12 Mar 2010, 19:37
Forum: Members Machines
Topic: My TZR 250 EV project
Replies: 94
Views: 28430

My TZR 250 EV project

I think I may have to re-calc my battery pack size then because I want (at least) 100 km range (120 would be better) at freeway speed. Can someone tell me if re-gen braking counts as a recharge cycle each time its used ? So if I use the re-gen brake 10 times while commuting to work does that = 11 cy...
by GRMarks
Fri, 12 Mar 2010, 03:17
Forum: Members Machines
Topic: My TZR 250 EV project
Replies: 94
Views: 28430

My TZR 250 EV project

The hub motor is via USPS (US postal Service) so heres hoping no unexpected charges. Image
by GRMarks
Fri, 12 Mar 2010, 01:13
Forum: Members Machines
Topic: My TZR 250 EV project
Replies: 94
Views: 28430

My TZR 250 EV project

Here is the TZR 250 (with lower faring removed). Forgot to take a photo befor I started ! http://lh5.ggpht.com/_UxGAw06t3tA/S5irDKQoJTI/AAAAAAAAABo/k1YHUV6Jd68/s512/Photo013.jpg With the ICE removed - but lots of oil every where on the lower frame. http://lh5.ggpht.com/_UxGAw06t3tA/S5irkyWdXeI/AAAAA...
by GRMarks
Thu, 11 Mar 2010, 13:55
Forum: Members Machines
Topic: My TZR 250 EV project
Replies: 94
Views: 28430

My TZR 250 EV project

antiscab I was planning on the KLB14401I controller. I am having lots of trouble fitting 36 60 Ah batteries in the frame let alone 50 ! I want to use the fuel tank area as a storage space - somewhat like a scooter. I should mention I got my conversion from mile to kilometers wrong. I am aiming on 12...
by GRMarks
Thu, 11 Mar 2010, 13:49
Forum: Members Machines
Topic: My TZR 250 EV project
Replies: 94
Views: 28430

My TZR 250 EV project

Richo thanks for the numbers, I am new to this and just used simple calacs I picked up from other posts. Mark from Enertrac used 34 TS 40 AH batteries to get his 80 mph. He is using 3.7 volts per battery for his calcs. The motor has been tested to 144 volts so I am planning on staying below this val...
by GRMarks
Thu, 11 Mar 2010, 04:50
Forum: Members Machines
Topic: My TZR 250 EV project
Replies: 94
Views: 28430

My TZR 250 EV project

I am just starting on my first EV project which is a 1986 TZR 250 Yamaha. I got it for $500 from a wrecker, it has a blow engine - just perfect for my needs. I umed and ared about steel frame or aluminium (I had a choice) but in the end I went for the aluminium as it is lighter and has a bolt on cra...