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  1. R

    Recommend a good T handle allen wrench set

    Wiha 33496 8-Piece Soft Grip T-Handle Ball End Hex Metric. US$58 on Amazon. I have been using these professionally for at least 10 years Now that the Bondhus patent has expired, all major tool companies make ball end hex keys. The critical thing to keep in mind is to never use the ball end...
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    Levo dropper cable routing.

    Is there a similar video (or any documentation) for the Gen 1 Turbo Levo expert? I want to replace my Command Post with a Reverb AXS.
  3. R

    SRAM AXS derailleur connected to main ebike battery

    What voltage do you supply the Garmin?
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    SRAM AXS derailleur connected to main ebike battery

    NICE!! Did you 3D print that?
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    Tip: I only charge my batteries to 70% during colder weather!

    It is MUCH more important to keep cell groups balanced than avoiding keeping cells at full voltage. So it is OK to charge to 60-80%, especially for storage. But every few charges need to be to 100% for the BMS to balance the parallel cell groups.
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    SRAM AXS derailleur connected to main ebike battery

    Can you describe what "...failed to wake up..." means? Are they dead and cannot be revived? Or did they not "wake up" with the vibration sensor that allows AXS devices go to sleep and then wake up when the bike is moved? Did you try a standard AXS battery? Did you push the button on the side...
  7. R

    Levo Gen 2 End of life for the Levo?

    Doesn't a replacement motor re-start the 2 year warranty for the motor?
  8. R

    Electrical/electronic rubbish

    Rosenberger came out with these C series connectors in 2013, and the design has not materially changed
  9. R

    Specialized Levo - Why So Popular?

    This. I bought my Levo in 2018, and at that time Spec had the BEST control loop / torque sensor / motor controller integration by far. Very smooth, natural application of power on startup and stopping. I have no idea what the current competition is doing, but I suspect they have caught up...
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    Do's and Don'ts for e-bike battery care. What do you do to keep your battery performing at its best?

    YES, if you want to preserve cycle life (overall number of charge cycles). I own one of these from Luna Cycles. This is much more controlled than using a timer arrangement. However, these will create cell imbalance if used exclusively at any setting other than 100%, as the BMS only balances...
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    Do's and Don'ts for e-bike battery care. What do you do to keep your battery performing at its best?

    Yeah, I forgot the obvious "damage to the cells" problem. Any Lithium Ion cell that has its casing compromised is a potential bomb that needs to be treated with caution and care. Put it outside. Do not use it.
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    Do's and Don'ts for e-bike battery care. What do you do to keep your battery performing at its best?

    There was a time when new, quality cells were difficult to obtain and expensive. Many people recycled cells from retired battery packs (think laptops and scooters) to make upscaled packs. Some of those upscaled packs went into bikes. Upcycled cells are never well-matched. Even if you...
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    Do's and Don'ts for e-bike battery care. What do you do to keep your battery performing at its best?

    I think that most fires are associated with using recycled cells and other bad building practices (see "hover boards"). I doubt that any modern commercial ebike batteries catch fire.
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    Do's and Don'ts for e-bike battery care. What do you do to keep your battery performing at its best?

    Because whatever caused the initial imbalance (likely higher cell resistance) will likely get progressively worse. The parallel cell group at a lower voltage when the charging stops will remain at a lower voltage (cuz no balancing). If they are only 5 mV down with each charge cycle...
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    Do's and Don'ts for e-bike battery care. What do you do to keep your battery performing at its best?

    First off, batteries with quality cells charged with an OEM charger will charge at a relatively slow rate. Most cells are rated at a 1C rate. This means you could charge to 100% in one hour. But the OEM chargers charge at a very conservative rate of ~.2C (or so). So the cells do not get...
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    Do's and Don'ts for e-bike battery care. What do you do to keep your battery performing at its best?

    A well made battery should not be affected by shock and vibration. There is little room for movement, which causes fatigue and strain. Having said that, I am deep into rebuilding a friend's e-bike pack that was made with nickel-plated steel interconnects. Nickel-plated steel is well known in...
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    Do's and Don'ts for e-bike battery care. What do you do to keep your battery performing at its best?

    Keep your batteries inside if at all possible, especially while charging. As for me, I am using the "Trail" power setting more often during rides instead of "Eco" to keep me from getting overheated. I rode this morning in 95F (35C) and still climbed 1500 feet (460m) in an hour.
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    Do's and Don'ts for e-bike battery care. What do you do to keep your battery performing at its best?

    The balancing mechanism in BMSs used at the price point of e-bikes is 100% analog circuitry. It cannot be programmed.
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