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  1. J

    Dual batteries in parallel (different capacities)

    I come to this forum as the purest source of online information. Apologies if it has been asked before. I have a Talaria MX-4 with the stock 60volt battery (16S, 45AH: 20700 cells: Max rating of pack 150+ Amps) I have just built an auxilary 60volt battery (16S, 10AH: 18650 cells: Max rating of...
  2. J

    Searching for my personal battery apprentice

    How do I apply for a visa to this N̶o̶r̶t̶h̶ ̶K̶o̶r̶e̶a̶n̶ ̶G̶u̶l̶a̶g̶ fabulous opportunity.
  3. J

    Sur-Ron - New Mid drive Bike

    Walking on the edge there. But hey, that's where the fun is. Have yourself a spare controller on hand so your bike isn't down for too long. I was personally underwhelmed doing voltage mods to the stock controller. Bit of extra top end speed but no additional torque on acceleration.
  4. J

    Sur-Ron - New Mid drive Bike

  5. J

    DaVinci drives

    Post some photo's ace. Davinci drive usually runs a RC speed controller. They require PWM signalling to make them turn the motor. Ebike throttle produces 0 - 5 volts so it needs to be converted to this PWM. That's where the black box comes in. Inside there should be a high voltage UBEC (check...
  6. J

    Sur-Ron - New Mid drive Bike

    Pulled apart a couple of the stock controllers, gutting them to house the Nuclear controller. The capacitors are rated to 80V form memory. Didn't bother looking up the spec of the mosfets. Fell under my planned 18S (75V) application. Wouldn't go beyond that though.
  7. J

    Sur-Ron - New Mid drive Bike

    I haven't been here for a while but a few comments on this page based on my experience: If your building your own (AUX) battery - The connectors you want that will plug straight in are the RCPROPLUS brand REB6808 S6 P8 style - expensive but quality. The stock controller has a low voltage cut...
  8. J

    Sur-Ron - New Mid drive Bike

    Y.T and Google can tell you what they do and how to test em - I bet my cock thats your problem. Get your hands on a spare and a couple of beers. Pop the side cover off your motor (can be done in the bike). You will see a green disk / ring screwed in there. These are your hall sensors. Unscrew...
  9. J

    Sur-Ron - New Mid drive Bike

    Faulty motor hall sensors - they are a spare part. Easy enough to change out Mine had similar symptoms.
  10. J

    Sur-Ron - New Mid drive Bike

    It's all personal taste mate. There is no blanket "Best". Just the best thing for me. How do you like your ride to feel? Muted, planted, stuck to the ground. Or Lively and playful like a MTB? Planted - go the light Moto tyre option. Playful - find the strongest MTB components you can and...
  11. J

    Sur-Ron - New Mid drive Bike

    I recently did the Moto Tyre experiment on the Surron. I read all the posts and recommendations. Agonised over my choice and pulled the trigger. First ride - "Fark this!" The good: The cornering grip was unbelievable. The bike was now a plough. Smash the chunkiest of terrain. magic carpet...
  12. J

    Off-The-Shelf Ebike. Worth it?

    Over the I've last decade, I've built a number of DIY e-bikes. Several Hub drives and 2 mid-drives. All in the 2 - 5 KW range, retrofitted to DH style bikes. They are all gone now as my Surron has been so awesome to get my e-fix on. I'm now thinking of something a bit more accepted by the...
  13. J

    Sur-Ron - New Mid drive Bike

    Cuts out for no good reason? Key off. Key on. Goes OK for a bit then cuts power again. Rinse and repeat? You've tried disconnecting all the safety cutouts to eliminate them (brake switches, kickstand sensor etc)? Could also be failed Motor Hall sensor due to moisture ingress. It's a spare...
  14. J

    Neematic - 20kW middrive bike

    So Dylan from NZ marketing just flicked me a brochure because I was asking questions on it's specs. While I'd like to post the entire brochure, i've just managed to include the spec relevant screenshots, minus about a dozen action shots of the bike that don't hold relevance, other than...
  15. J

    Neematic - 20kW middrive bike

    I personally like it in it's Moto form. I know that this is an E-Bicycle forum and a lot of the appeal is being able to pedal past a cop at 25kph, then rip it when nobody is looking but I find that pedals just get in the way with performance off-road riding. I think that's what they're going...
  16. J

    Alan From ERT bad business!!

    He has got some cool builds which set the stage for his rep as a vendor. But I'm astounded that he is still trading given his well documented behaviour towards so many of his customers. The only way I got my money back was by hiring someone to go to his house and knock on his door. Alan writes...
  17. J

    Sur-Ron - New Mid drive Bike

    If we have the ruler out measuring dicks here, consider this: The winner doesn't have one! Her name is Eva Hakansson (engineer, academic, garage builder and balls of steel rider) and piloted her home built electric motorcycle to over 400Kph on the salt flats. I had the pleasure of chatting with...
  18. J

    Sur-Ron - New Mid drive Bike

    Agree. Jack Cecil was banging on about them in his 70MPH Surron video on YT. Jack also says he has partnered with ERT and Lightspeed. I know nothing about Lightspeed but based on my personal dealing with ERT, I wouldn't touch them with a pole.
  19. J

    Sur-Ron - New Mid drive Bike

    IMO that front wheel / fork setup will give the Sur-Ron the proportions of a Pennyfarthing. With that change in bike geometry, I doubt you'll be happy with the ride. But if you decide to go there, would love to get your feedback on the experiment. I've personally gone with a strong 26" MTB...
  20. J

    Alan Hu Electric Race Technologies. Beware!

    Thanks for your replies and offers. My money has now been recovered and I consider the matter with Alan closed.
  21. J

    Alan Hu Electric Race Technologies. Beware!

    Anyone here used a debt collection service in the LA area they could recommend? Perhaps have some experience of it themselves and would like to make some money. DM me.
  22. J

    Alan Hu Electric Race Technologies. Beware!

    Oh. Hi Alan. Good to know you have eyes on this one. Would you care to comment to me and the rest of the community looking in on this one why you have chosen to steal my money($US850). If you're broke and need some time to refund it, just let me know. This ghosting thing you do has lead to...
  23. J

    Alan Hu Electric Race Technologies. Beware!

    This was going to be a post of me publicly calling out Alan Hu of Electric Race Technologies for being a lying grub and calling out his unconscionable business practices. A story of how he took over $US850 and delivered nothing more than lies and disappointment. This post was going to serve as...
  24. J

    Sur-Ron - New Mid drive Bike

    By Segway claiming that this sur-ron is a different brand all together, can you get around an exclusive dealership agreement ?
  25. J

    Sur-Ron - New Mid drive Bike

    Service your brakes if there squealing. Pads out. Brake cleaner. Fully extend pistons. Clean and lube them. Replace rotors if there scored. Worked a treat for me. They used to make horrible noises.
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