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  1. R

    water in battery

    i have a 52v jumbo shark battery from em3ev. I noticed just now that my battery was on,even though it shouldnt have been. i tried turning it off, but that didnt work, the lights did funny things and in the process noticed a sloshing sound. i immediately unscrewed part of the bottom...
  2. R

    brake rotor and wheel rim questions

    ok, so ive decided that im not gonna just live with the thump of my wheel that i smashed on a pothole, so the question now is what to replace it with. i could either contact the manufacturer and get an exact replacement, or find another higher quality rim. it would have to be the same...
  3. R

    hit a pothole, hard.

    i hit a pothole pretty hard the other day, hard enough to slightly dent the rim. (see pic.) didnt see it coming until i was on it. i got the front up and over it, but the back wheel took a hit. i thought the dent was the extent of the damage, but ive been feeling a thump-thump-thump as i...
  4. R

    crack in frame. salvageable?

    so, ive been on the lookout for a cheap used ebike for my daughter to replace her electric scooter since that thing weighs a ton and she cant get it out by herself. (and if the battery dies while out youre screwed, which happened a couple weeks ago.) i found what looked like a good...
  5. R

    How to wire this?

    A while ago, I picked up a used serengeti rhino for my daughter. Lately, the batteries haven't been lasting long at all, possibly from being out over the winter. So I decided to pick up a new set. They're a bit different , tho, the original ones had screw- in connections, but the new ones...
  6. R

    finished my build!

    They restocked sooner than expected, so I went with the ebikeling 48v 1500 watt waterproof kit in the end. also got the headlight/horn kit. horn is good but the light is a bit meh. they said its 1000 lumens, but im also a flashlight buff, and it doesnt seem close. maybe defective? at least...
  7. R

    need kit suggestions, please

    ok, so ive got pretty much everything i need now (bike, 52v 17ah jumbo shark from em3v, mounting stuff), except for the motor kit. i was going to go with the 1500 watt waterproof kit from ebikeling, but they sold out in the meantime. they said they should be getting more at the end of the...
  8. R

    Anyone modded an arrow type bike?

    The one thing the arrow type ebikes have going for them is a great way to mount a large capacity battery. Of course, who knows how good the battery quality is, but you could theoretically get a broken/ used up one and replace the cells with good ones. I've thought in the past that they would...
  9. R

    controller inside motor?

    i came across this kit - https://www.ebay.com/itm/48V-1500W-ebike-kit-for-20-29-rear-wheel-conversion-with-waterproof-connector/163830361019 its got the controller built into the motor. which sounds nice but is it a good idea reliability-wise? anyone familiar with this company? are they...
  10. R

    Finalizing my build, a couple questions.

    Ok, so I've got the bike: now ive gotta figure out the build. im leaning towards getting the 1500w waterproof kit from ebikeling. ive currently got the 1200, and wish it was a bit faster, especially in wind etc, but according to the website the 1200 provides 30 nm torque, whereas the 1500...
  11. R

    Hub motor maintenance?

    What exactly does a direct drive hub motor need in terms of maintenance? I searched and found lots of pages saying that they're low maintenance, but couldn't find what that low maintenance is. In particular, what about the axle? I don't have indoor space to keep my bike, unfortunately, and...
  12. R

    need some advice on what to get or at least the options available

    ok, some background: ive had what ill call 4 ebikes: 2 premade and 2 kits, which were built onto a variety of frames over the past couple years. my first was an ancheer. after that i got a cheap 48v 1000w kit on amazon and a 48v 13.5ah shark battery from luna. after about a year the axle...
  13. R

    where to mount the battery on a fs mtb?

    hi, ive currently got a hardtail converted to ebike which i use for commuting etc. im in brooklyn, ny, though, so the roads are less than stellar. even with a suspension seatpost, theres still lots of bumps that are jarring. im looking at getting a full suspension bike to convert instead...
  14. R

    escooter not lasting as expected SLA battery

    hi. i purchased a used scooter style ebike from someone, and its not lasting as well as i thought it would. i was able to ride it home, a distance of about 4.5 miles, and it started out good, at maybe 25 mph, and made it up a fairly steep hill, but about halfway home or so it started slowing...
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