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Recent content by OCD

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    Anyone have experience with LiFePo4 scooter batteries?

    Thanks for the response(s). I believe a 72v 45ah LiFePo4 pack would give me the range I need for my commute, I would be limiting my controller output to 45amps. As stated above, most vendors use the same pictures/copy in their adverts so how would a person know which one has recycled cells, B...
  2. O

    Rear disc conversion for Motorino/Davinci/Daymak e-scooter

    Everything is connected and fully bled now. A total difference from the old drum brake which could barely be noticed when used alone. Now, the rear brake is stong enough to lock up the back wheel at most any speed if desired. A new support was fabbed for the reshaped fender and welded in under...
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    Rear disc conversion for Motorino/Davinci/Daymak e-scooter

    Feel free to use only your front brake on wet, gritty roads in an emergency situation. Without adequate rear brake support you'll find yourself on the pavement staring up at some BMW owner in a roundabout coz he figures 'all cars go first', don't ask me how I know... :rolleyes:
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    Rear disc conversion for Motorino/Davinci/Daymak e-scooter

    Time will tell, things from Aliexpress aren't always bad, sorry to hear your experience was. Fingers crossed, can't be worse than the stock drum which wasn't adequate at 30kmh, never mind 50kmh+. I had no trouble squaring it up and centering the caliper, we'll see in a few days when I get the parts.
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    Rear disc conversion for Motorino/Davinci/Daymak e-scooter

    Here's a pic of the finished installation on my Davinci scooter. The pieces bolted together easily using the old drum spacer + a few washers to get the rotor centered. I was able to use the old brake brace by rotating the rotor to suit. The rear fender can likely be heated and reshaped to clear...
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    Who makes the best high output 72v battery pack?

    Thank you for your reply: As a vendor for Grin, I'm not posting to complain about the quality of their products, I'm just surprised because I've bought/sold alot of their goods and have found them 100% after spending $kkks there. I am surprised that any product from them would run into issues so...
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    Rear disc conversion for Motorino/Davinci/Daymak e-scooter

    Found the answer after some searching on AliExpress as per Dui ni shuo de dui above. Appears to be a bolt on solution that expands to grip the inside of the drum surface, the store sells all the adapters/discs/calipers/master cylinders/hoses you'll need. I'll post up once I have the parts in my...
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    Rear disc conversion for Motorino/Davinci/Daymak e-scooter

    Thanks for looking: I've got a Davinci ebike/scooter that I converted to an 84v lithium pack with an 80 amp controller. The Davinci looks like a Motorino but I'm hoping I can buy a new side cover for the hub motor to put a disc on it. There does not appear to be any name, number, etc on the...
  9. O

    What makes for a beautiful custom eBike?

    Hand built from scratch including: fenders/frame/forks/handlebars/72v 24ah LGHG2 pack. Also features CA, led head/tail lights, 8" Avid brakes, Brooks leather grips, etc. Upgrading to QS motor soon!
  10. O

    Importance of matched cell resistance in pack?

    I googled and checked the DIY powerwall FB page and came up with DSstyles liitokala lii-500 being a decent unit for the money (trusting the opinions of others'). I do not see the unit as being able to be calibrated. The cells all came from Battery Bros and were tested starting with the state of...
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    Importance of matched cell resistance in pack?

    I bought a battery charger/tester and noticed while testing the first group of four LGHG2s that the MR values (I assume internal resistance) have variations. Of the four tested so far, two were 32mr, one 38mr and 45mr for the other. Is it best to do a charge/test cycle on all of the cells I have...
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    Fresh battery build issues

    Hemo: Agreed! I have begun the process of deconstructing this pack. If I have to sink more time into fixing it, I may as well work until I have a connection arrangement that at least allows me to take advantage of the full output power of these cells.
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    Fresh battery build issues

    Hemo: it is the 14th group out of 20 that is sitting at 4.0v, the other 19 groups are at exactly 3.6v. The groups are 9 cells each. I have read that balancing won't happen until one group reaches 4.2v which this one won't charge up to. Could this be related to a problem with the internal...
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    Fresh battery build issues

    Thanks Amberwolf I didn't realize we could upload directly to ES will look into that. Everybody else thank you for your input and suggestions. I realize the layout was a copied inefficient Chinese design but I built a multi nickel layered pack before this one which worked great for about a...
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    Fresh battery build issues

    Thanks Amberwolf: Since Photobucket screwed everyone I have not found anywhere to store my photos and this site won't let me link to pics stored on Facebook, sorry to those that can't see it. I will follow your suggestion on checking the individual cells. I bought from Battery Bros as they were...
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