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    Bionx Battery Technology?

    I purchased a Bionx D500 system in Feb 2015 - shortly after they first became available. It has a 48V 11.6Ah battery. In the last year or so most of the eBike companies have come out with ~20% higher capacity batteries in the same size and weight package - due to going to the newer technology...
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    Rebuild/Upgrade for Bionx d500 Battery

    https://www.electricrider.com/bionx-lithium-battery-upgrade-replacement-p/bionxrebuild-13.2.htm Does anyone have any info/feedback on this?
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    Mid Drive Motors that mount ABOVE the Down Tube?

    I THINK I've seen some newly released motors that are designed where they can mount above/behind the down tube - BUT now I can't find them. Can anyone provide a pointer or link to help me out? This would seem to be a good solution for a tandem that has the eccentric bottom bracket and...
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    BionX D500 DV Information

    I have recently found data on the latest and most powerful Bionx D500 DV system. I had dismissed Bionx based on the relatively weak power of the earlier systems BUT it appears this one is a BIG step up on the torque output and is relatively light. I LOVE that it has built in torque sensing...
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    Highest Torque Low Speed Hub Motor for MTB Tandem?

    I'm looking for the highest torque low speed rear hub motor I can find for a tandem off road only mountain bike. This motor appears to have the best characteristics - BMC V4 TT (Double Torque) Geared Front Hub Motor Kit - http://ebikessf.com/node/363 - BUT it appears to be unavailable in a...
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    Highest Torque Low Speed Geard Hub Rear Motor?

    I'm thinking of adding a rear geared hub motor to our ECDM Ventana full suspension MTB Tandem. (Using a front hub motor is complicated by the upside down Maverick DUC32 Air Forks) So I'm looking for ideas on what rear hub motor will work the best at the very LOW speeds and steep hills that one...
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    BMC V4TT

    Anyone have any data or reports on the new BMC V4TT? http://ebikessf.com/node/371
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    Sierra Climber High Torque Geared Hub Motor?

    California Bike features this product http://california-ebike.com/product/sierra-climber-high-torque-geared-motor-kit/ I know they are a highly rated vendor. This looks like a potential for a tandem that is ridden by OLD folks in very hilly country and/or for a MTB tandem. HOWEVER I have been...
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    Custom Framebuilder using Bosch 350W

    I saw something about a frame builder that was making custom bikes with the new Bosch 350W motor but can't find it now. Can anyone help me locate it. Not sure if it was on this board or not? THANKS
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    Tandem + Bafang BB02 + Thun + Triple Crank?

    E-Tandem with Bafang BB02 Mid Drive, THUN Torque Sensing BB & Triple Crank+ I THINK I have come up with a way to have all the features I want on my E-Tandem? Comments/Critiques/Suggestions WELCOME! BACKGROUND - I have a single new Haibike with the FABULOUS new Bosch 350 Watt system with...
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    36V14.5Ah Bottle-09 Panasonic - Sine Wave?

    The BMS Battery site advertises: New design bottle-09 ebike panasonic NCR18650PF battery pack 36V14.5Ah included a S180 charger. there is an output for ipad and cellphone charging and A 20A sine wave controller inside. I don't understand the concept of a CONTRLLER in a battery pack? I...
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    Bafang Crank Drive BB Clearance?

    Can any of you folks tell me the clearance between the bottom bracket outer surface and the main motor case? I have a bike with a larger than normal and wierd shaped bottom bracket housing and am trying to determine if the main housing will interfere with my bottom bracket housing. (It is a...
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    Pedal Assist for a Tandem?

    I recently got a Haibike MTB single with the new 350 watt Bosch BB drive system and LOVE it. The range with the PAS is excellent and the feel is natural. I am planning to add an electric assist to one of my tandems and would very much like to have the PAS or Pedal Assist type of power control...
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    Haibike XDURO AMT Pro

    I just got mine today. Quality appears to be VERY high. It came totally assembled with just the bars turned 90 degrees. I just rode it around the block but was very favorably impressed by the feel of the pedelectric boost and the controls and display. Will be doing some customizing (taller...
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    Need Helper Motor INFO for Off-Road Tandem

    I'm a new OLD guy that is looking for help in configuring a helper motor for our Ventana Off Road Mountain Tandem. This is to help us 70 year old folks (and our small dog that sometimes rides in a basket on the stoker bars) up the steep and sometimes rocky hills we ride in. I looked into this...
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