djotter Posted February 10, 2020 Share Posted February 10, 2020 I am looking to convert something like a Honda C50 or Yamaha V50 to electric, and I am looking for advice. If I want to ride it on the road as a commuter to work, I'm guessing i'll need compliance certificate before registration? I'm hoping @cletus is happy to chime in because he would be my closest LA class certifier. I've had a read through the LVVT docs and as long as it stays under 50km/h and under 60 volts it should be ok? Anything else to design in? I have a bunch of lithium batteries that I can build into a right-sized pack, and still need to decide if I use a hub motor or a centrally mounted one. But before I go spending any money on a donor bike or motor, what do I need to know? NZTA says a moped needs to be registered and entry certified. Is it a big deal to re-register if I find a de-registered donor? Working examples can get quite pricey. Thanks! 1 Quote Link to comment Share on other sites More sharing options...
h4nd Posted February 10, 2020 Share Posted February 10, 2020 For basic movement: at what speeds, for how far? That'll help tell you how much power you need (watts), which tells you how much voltage/amps you needs, and how much energy you'll need store (Watt hours). Quote Link to comment Share on other sites More sharing options...
xsinclairx Posted February 10, 2020 Share Posted February 10, 2020 If you can find a c50 donor get it registered then do what ever you want to it like all the Lifan swap guys do. I recall seeing a bolt in kit to convert c50s advertised somewhere. Also this would be better in the general bike chat forum! 3 Quote Link to comment Share on other sites More sharing options...
Willdat? Posted February 10, 2020 Share Posted February 10, 2020 16 minutes ago, xsinclairx said: If you can find a c50 donor get it registered then do what ever you want to it like all the Lifan swap guys do. I recall seeing a bolt in kit to convert c50s advertised somewhere. Shanghai Customs. Pretty spendy but solves a lot of the issues. 2 Quote Link to comment Share on other sites More sharing options...
cletus Posted February 10, 2020 Share Posted February 10, 2020 Kerry Buchanan is a certifier in Auckland who specializes in bikes, and can cert an EV conversion as well, so he would be perfect for your project @djotter 1 Quote Link to comment Share on other sites More sharing options...
djotter Posted February 11, 2020 Author Share Posted February 11, 2020 On 10/02/2020 at 14:59, h4nd said: For basic movement: at what speeds, for how far? That'll help tell you how much power you need (watts), which tells you how much voltage/amps you needs, and how much energy you'll need store (Watt hours). I would like it classed as a moped to keep costs down, so 50kmph. Home to work is 10km, so 20km return each day, urban only. I have seen Aliexpress kits for a reasonable price, 1000W or so? I have read they can be a bit gutless and want to keep up with traffic at a green light. No real idea on if this is a suitable power rating. I have also been to Haynes Engineering and found a few options in scrapped forklifts for motors (1-2kw). I have 300 18650 cells, but would probably grab the best 150 or so and buy extras to make up the right voltage and cell C rating to match the motor. 9 hours ago, cletus said: Kerry Buchanan is a certifier in Auckland who specializes in bikes, and can cert an EV conversion as well, so he would be perfect for your project @djotter Perfect, thanks! 23 hours ago, xsinclairx said: Also this would be better in the general bike chat forum! You're right, I shouldn't have jumped straight to a project subforum. My apologies. 1 Quote Link to comment Share on other sites More sharing options...
xsinclairx Posted February 11, 2020 Share Posted February 11, 2020 33 minutes ago, djotter said: I shouldn't have jumped straight to a project subforum. Who am I to judge. Research is part of the build! keep us up to date with any progress! Quote Link to comment Share on other sites More sharing options...
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