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Recent content by ninepointeight

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    20kw Bike OR Parts - DFW - TX - USA - $1500

    Hi Everyone, Unfortunately due to several life events I no longer have time for DIY ebikes and my ebike has fallen into slight disrepair. The battery pack has been at 0v for several years and is likely trash. However I am selling the entire bike, or parts of it. My post history has all the...
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    Can EVs survive without subsidies ?

    They are pretty much guaranteed to, unless people want to start walking/biking/public transportation. Eventually oil will be too expensive to make gasoline for cars. Subsidies can help get us there sooner. EV's run on LNG, solar, nuclear, hydro etc. Gas cars only run on dinosaur.
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    Battery Temperature Management

    Thanks for all the good advice, unfortunately I don't have much of a say of what else goes in the garage, but I like the idea of having a cooled setup for storage in the garage, it will be a workout moving a pack like this. Less things to break on the bike as well, good to keep the moving parts...
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    Battery Temperature Management

    Hello all, having past through my quarter life crisis, I am embarking on another build and to address previous shortcomings. I am planning likely 20s36p pack of Panasonic's NCR18650pf, these still seem to be the best cell for a long lasting chemistry + high discharge(I haven't seen anything...
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    Any good and simple "cop button" solutions?

    I never understood lidar jamming unless you have an always on system (illegal?) You used to not be able to outrun Motorola, but then we got fiber optics. By the time the light bounces back he has his reading, long before your jammer turns on. I don't think we can beat laser or radar, which is...
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    Kelly Controllers Configuration Program - a Definitive Translation

    This write up is a real gem, I wish it had existed when I was looking to bite the bullet on my kelly controller, fantastic job. I do wish the features on some of these items were more clear from Kelly, the manuals and datasheets are seriously lacking from a technical standpoint, although...
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    Variable Regeneration Voltage Questions.

    amberwolf said it well and concisely... I am going to add, that although tangentially related, information that might be important to others that might see this thread. The kelly KEB series of controllers allow for variable regen via a different sensor, BUT the sensor used must be of same kind...
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    E-Street Machine 20kW

    Sorry I am just now seeing this, I had my email preferences incorrectly set. I had the spokes for the rear wheel all 99mm long from a supplier on...
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    E-Street Machine 20kW

    Never seen or used a controller like that, but I can't imagine it is of high quality, considering the price of the whole setup, but it might just do the trick for 8kw. TBH I would consider the controller a backup, but that depends on how reliable you need your bike to be. I would not copy my...
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    E-Street Machine 20kW

    I did get the hub open, using nothing but wooden wedges and a rubber mallet. I don't have a gear puller, although next time, I might buy one :? . I then sprayed varnish on everything internal, and added about 8.5 ml of ferrofluid, and i finally added my arduino + neopixel display that reads...
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    overpowered bikes? 20+kw and 7kw vectors

    You didn't specify what winding you got on your qs273, but it is safe to say that you are going to have problems with the vector dropouts. Even with precision machining, I am convinced there is no way for them to work with high torque setups. I ran into this problem on my bike, and am...
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    18650 Pulse Arc Welding

    Amazing machine absolutely. Can someone explain why it uses TIG welding as opposed to spot welding? What are the benefits? Doesn't TIG welding require gas? As someone who is welding illiterate, I don't understand the added complexity. Shame that such a system is only really good for...
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    Electric Enduro Frame controller heating inside the frame?

    If I had a controller or any device with a significant heat output inside the enduro frame I would ventilate it. If you don't want to compromise in aesthetics, adding a high CFM fan in the area under the seatpost mounting bracket is something that has been done before, and as long as the intake...
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    E-Street Machine 20kW

    It has been quite a while as I have been very very busy, but I'm back. I am currently in the process of taking apart my motor to add ferrofluid and spray varnish inside. I am having a lot of trouble opening the motor and could use some help. I have taken off the bolts on the wire side and I am...
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    100+ Miles of Fun per Charge: 5.1kWh batt, 20kw capable

    Could you elaborate? I am not familiar with the naming conventions of bolts, did you order them online, and if so could you link? Googling turns up many different bolts of various dimensions. I am looking for some bolts to replace the originals as well, but would prefer them to be longer than...
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