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  1. P

    Gonna get a used model S

    If all goes to plan I should have a new job lined up for myself in the next few months... With that my aging honda accord from 2010 needs replaced... I'm starting to see model S's 60 and 85 starting to dip into the low $30k number. A mid range 3 would set me back about 40 so not really my kinda...
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    Motor assisted walking device

    Hey guys... I got a crazy idea for some device that'll assist when walking in the city. I've been thinking there's not really a device that helps us walk or aid in our mobility beyond a scooter, bike, longboard.. So I've got an idea of a tread like attachment to your feet for an extra boost for...
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    What Chainring/s is everyone running these days

    Hey guys! Figure i'd post this since I'm right in the middle of replacing my drive stuffffff... Getting a new chanring and crankset along with chester pedals... I desperately need new pedals...mine dont even spin..and one is half missing. I'm running a 38t up front single drive with a 6 speed...
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    Poll: What type of vinyl wrap for battery box

    Well I wish we could do a poll post but not seeing it for mobile... Here's my current battery. It's semi opaque milky white hdpe on the sides and black hdpe on both the other sides. I'm switching my setup from a battery bag that doesn't fit the battery to attaching the battery via velcro...
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    Ebike riding tips

    I figured after the morning commute I had we could make a collection of ebike commuter tips.. This might already exist but I'm wondering if we could do a refresh. Tip #1 Always look where your turning. I'm not sure this is as much of a cycling tip as it is a motorcycle tip. When I was leading...
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    Reducing 55V charger down to 54.6V

    I think this title may be a winner.... Here's my problems Cheap 1.5A 13S charger has a resting voltage of 55.0V. I've confirmed that the cc stops when the battery hits 55v on the charger and trips into cv mode. Charger basically overcharges each cell to 4.23V and typically the voltage reaches...
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    I need a new bottom bracket...HALP

    I tried to make the title as explanatory as possible... So I realized when pedaling that the crankarms actually wobble slightly and it's not from being loose in the square taper crankset... I recently hacked off two chainrings for weight reduction and badass points so my current chainrings...
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    Rim brake pads after ebike conversion

    Hey guys. I realized I'm still on my stock original brake pads from about 15 years ago. Lol... They started to make a nice grinding noise when I'd apply them...well now it makes sense.... These were the rear pads. I replaced the front ones and they're decently worn. Probably 2/3 completely...
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    3rd ebike battery. This time, doing it right

    Like the title says. I'm starting the design process of my 3rd ebike battery. To go into a little history: The first ebike battery was a super weird shaped battery that hugged the frame tube on my bike. I created individual cell balancing leads and I hot glued every cell together. I used solder...
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    Loving the ebike life but wishing for a full suspension bike...

    Pretty much as the title says... I think I may just need to accept the fact that a bike is a bike and it'll always have some disadvantage... Right now I'm loving my computer except for 2 things. 1) I wish I had more umph... My controller is shunted for around 29amps which gets me about 1500w...
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    Headlamp needed

    Hey guys. I've got a few questions and I need advise for a headlamp on my ebike. I've got a trek 800 with a suspension fork on the front. I have an illuminated rear taillight that goes right on the seatpost. I'm trying to figure out the best option for a headlamp. I've got a convoy c8...
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    My ebike commute vid's - Washington DC

    Hey guys! Finally got things going after my move with my new commute! Check out some of my videos! Feel free to like and subscribe if I can advertise that on here. I'm hoping to do some longer bike rides once I get familiar with the city and city biking. M6UpGe20EXc Gfb6Vg5zi6U I'm still in...
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    My ebike commute starts next week finally!

    :D That's right! I finally get the chance to commute to work via my ebike and unfortunately public transportation (dc metro). OK maybe that was a little dramatic because I'll have time to read and do whatever on the metro which will be nice..but yea. The plan is to take my battery with me...
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    Car got broken into, how to prevent my ebike from getting stolen

    So joy to me. My car got broken into a few nights ago. Stupid crooks took my honda airbag. Nice right? Smashed window and a missing airbag. I hope that thing deploys in their face... Anyway, that's beside the point... I'm in DC and going to be leaving my bike at the metro stations around town...
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    Power analyzer reverse current regen question

    I have this: https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F152942871574 Or one just like it. It does a decent job measuring power draw although the voltage is off by about 1.5v too high. Well since the positive and negative line goes through this....and my...
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    Rebuilding my 48V 14AH 18650 Pack 13S7P to 13S8P

    Hey guys! So to give a little back story. I haven't really riden to work yet, primarily because the roads and trails around here aren't really advantageous of commuting from where I'm at. I live in DC and so typically Metro is an option but not where I'm at, I'd have to drive and then park to...
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    Cheap suspension fork 1-1/8 threaded

    Hey guys.. Thought I'd ask it here... Looking for a cheap suspension fork for my trek 800 that has a threaded 1-1/8 quill stem. Possibly this? https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F361690710905 One thing I read is that some suspension forks use...
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    Ebike crank arms

    Hey guys....need some help here. I've got an electric trek 80C sport (basically an 800) and one of the torque arms is completely destroyed by myself for not being able to screw in the pedal...I know there's a right hand and left hand thread for each. I also destroyed a cheap aluminum pedal when...
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    Charging woes...bms or charger?

    Back story: Build a 13s7p battery awhile ago last year and have been using it for my bike. Works great! Love the thing. Except for 1 problem...the charging...it frustrates me to no end... The problem: I have this bms...
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    If I could do it all over again... first ebike lessons

    Hey guys! Back with another informative thread from my point of view... I intend this thread to be a review of what I've learned since building my first ebike and riding it for 100miles. I figured since I hit the 100mile mark I now have some say and weight here... Review: Battery - I build my...
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    Bms question on a non-ebike battery

    Quick question guys. I got a little 20A 3s bms for balancing a battery pack to power a 5v buck cc cv driver. I hooked up both lipo and 18650 cells to make it 3s...however it doesn't seem to be balancing... Could someone give me an idea of how or more importantly when the bms actually balances...
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    18650 cell price over time and new 20700-21700 cells

    Man I wish there was a mobile version of the site...navigating isn't bad but typing a post is kinda a pain...Anyway... So I built a 91 cell 48v 7p battery. I used the cheap laptop type Chinese cells and also there were a few higher grade LG and panasonic cells in the mix. With all my purchases...
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    Enabling regenerative braking on eBay hub kit

    As the title says guys. I have the generic 48v 1000w leaf hub motor and a 12fet controller. This will be my first time riding the bike this weekend and I wanted to learn about regenerative braking... I noticed when I hand spun the motor with nothing else hooked up the two phase wires touching...
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    CF-X20S100A-A BMS Wiring help

    Looking for a little advice on how to wire this bad boy... https://detail.1688.com/offer/520385094656.html I can't read Chinese so I'm a little lost when it comes to the chart they have posted... I get the B- and C-, C- is charging negative, B- is battery negative. However, I'm stuck with the...
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    Shipping a regular bicycle to Maryland

    Guys....Trying to get my bike here in the DMV area from Cbus ohio... The drive is about 7 hours 1 way but looking at shipping options. My bike is at my parents house. If they take it all apart so its just the tires, frame, fork all separate and they're able to pack it in a moderately sized box...
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