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    Q100 and Q128 with 0.35mm laminations

    Are you still only doing rear motors? I'm interested in a 330rpm front. The Q100 is available in this, but the Q100H doesn't appear to be. It seems like you are using the increased lamination count to get higher torque for the same weight (unless I misunderstood, which is likely). It would...
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    Bafang/8fun SYXD-01F internal photos, gear modifications

    I removed the three screws and the plate didn't come off easily. I was running short on time and didn't explore much further. They did require an impact driver to remove. The drawings that I've seen for the Q100 show the disk at 8mm from the locknut on the axle instead of the standard 10mm...
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    Small capacity (4-5AH) high quality batteries

    They give you shipping estimates on their website. I think my shipping was around $15. They arrived overnight (since I'm next door).
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    Bafang/8fun SYXD-01F internal photos, gear modifications

    I am a fairly fit cyclist, so the motor that I have only makes the bike about 5-10% faster than my other bikes for commuting in practice. It is close enough that I give myself the same allowance for ride times. That is why I'm interested in faster options. Sadly my headlight (IQ Cyo Premium...
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    Making a through hole in a bikes head tube

    The OD of the head tube on that bicycle should be 31.8mm. You should be able to make a 20mm hole (large enough to fit an 18650 battery into) there or into the bottom bracket shell. Neither of those is an awesome option, but it's better than any other option for hiding batteries in the frame...
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    Bafang/8fun SYXD-01F internal photos, gear modifications

    (I had incorrectly posted this in the wrong forum, I'm moving it over here. Sorry if you've seen it twice) This is the hub used by the Faraday. I'm using one on my bike and selected it over other options due to the light weight (2kg vs 2.6kg or more for other Bafang alternatives) and the good...
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    Small capacity (4-5AH) high quality batteries

    I got the batteries. They aren't the ones shown in the video, those are still in development according to Justin. They are still pretty nice compact batteries though, so I did a quick ad-hoc mounting and have them on my bike: Weight for one was 495 grams, the other was just over 500 grams...
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    Potting Batteries, Thoughts and Experiments

    Justin: Are these batteries for sale? I thought this would be them, but it is a heat-shrink wrapped battery instead (similar dimensions, but not the robustness that these ones offered): http://www.ebikes.ca/shop/experimental/b362-5lim-r.html
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    Small capacity (4-5AH) high quality batteries

    They are $108 using their 10% sale. That's pretty close to $100. They seem to be taking a few days to ship them however (not unexpected with experimental stuff). Thanks to the link to the other thread cycborg. I searched by part name and looked at recent threads on this forum about batteries...
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    Small capacity (4-5AH) high quality batteries

    Grin is making my dream battery. 56 minutes into this video they show them: https://www.youtube.com/watch?v=IxB2j-egWcQ&feature=youtu.be You can order them here: http://www.ebikes.ca/shop/experimental/b362-5lim-r.html I can't find any discussion on them here (I searched for the part number)...
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    Power / Torque Sensor Roundup

    Battery (I don't find a big one to be valuable), controller, cav3, torque sensing bb and motor. Try to ride the tdcm before buying, it has a little play that is disconcerting and it's quite heavy. A throttle is cheap and useful for debugging, but I don't have one installed. A 3 position aux...
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    Power / Torque Sensor Roundup

    I tuned AGain and WGain up a lot and it is much more responsive. I think the default settings were so low that I was often accelerating as fast as the bike would (especially with a low torque multiplier). I can verify that it now starts in under one crank revolution if I start pedaling with...
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    Power / Torque Sensor Roundup

    Justin: Are there known good values for the AGain and WGain with the 15A controller and a 250W geared hub motor? Or does it vary too much bike by bike to have known good values? I've tuned PID loops before (for servos and VFDs on CNC machines), is AGain what would normally be considered...
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    Power / Torque Sensor Roundup

    It has an insane width and is designed for their cranks. The Q factor is going to be huge, like the bbs motors. I'm looking for e-bike parts that don't get in the way of riding the bike as a normal high performance bike. There isn't a lot offered.
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    Power / Torque Sensor Roundup

    Thanks for the advice Justin. I'm running the P9 firmware, I always read the release notes on later versions and hadn't seen any noted updates in the torque. It's good to hear that there have been changes. I'll do an upgrade and check my settings and let you know how it goes. I know that the...
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    Power / Torque Sensor Roundup

    In torque sensing mode the bottom bracket is sampling over a full revolution of the cranks, I don't think it cares about the wheel. It would be great to get some confirmation though, if it does care about the wheel rpm then I'll find some more magnets and try it out with 4. I think that there...
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    Power / Torque Sensor Roundup

    I'm using the Thun on my bike with a CAV3. It works well with the downside of there being a lot of lag (and the lag appears to gets worse when you turn down the PAS-level on the CAV3, which is annoying). It would be nice if the CA figured out an average starting torque ramp from previous start...
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    Battery-in-Frame Ebikes?

    Do you want a pedal assist bike or a bike that gets your distance and range with motor only? On my pedal assist bike I just keep the battery in a handlebar bag. It is pretty small (36V/10AH). I have a top assisted speed of 22mph and average around 20mph on the bike. I'm getting 50-100 miles...
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    Weight Weenie Ebike

    I'd recommend riding a PAS bike (which is what the BBS0* builds up into) vs a torque sensor bike to see which you prefer. I've ridden both and greatly prefer the natural riding feel of a torque sensor bike. I have friends who prefer the moped feel of a PAS bike. They are very different. The...
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    Weight Weenie Ebike

    8Fun/Bafang SYX-D01F This is the same motor that is used on the Faraday Porteur. It is not that easy to source in the US, but my great LBS (G&O Cycles) imported a few so that I could get one. It is 250W (nominal, I see more going into it quite often), around 2kg, and has properly located disk...
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    Weight Weenie Ebike

    The pack that em3ev quoted me is using 20 of these cells in a 10s2p configuration for a 4.9 AH battery: SDI INR18650-25R They are rated for 20A draw (8C) each cell, so 40A draw in a 2p config. It seems like a pretty good setup to me. Battery weight will be around 1kg including BMS and it will...
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    Weight Weenie Ebike

    My 250W Bafang/8Fun motor will draw down 350W (under 10A) in normal use, but I've never seen it spike much above that. I'm using a 15A controller. I'd be comfortable limiting it to 10A when using the weight weenie battery. It seems like this would likely work with a 22P battery. The longest...
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    Weight Weenie Ebike

    It depends heavily if you are building a pedal assist bike or a lightweight motorcycle that requires no human power. For the former I think I'd get a range of 10 miles on that battery. 24v is too low for most hub motors though to do anything useful. On my 8fun hub motor I think I'd stop having...
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    Weight Weenie Ebike

    Wide and supple tires don't need to be flat resistant. Run them at lower pressures and you get everything -- low rolling resistance, comfortable ride, light weight, and not easily cut by glass (the wider pressure helps a lot with that). It's not too hard to find bikes that will fit wider...
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    Weight Weenie Ebike

    Sun CR18 is a reasonable rim choice and available in 36 holes. It isn't the lightest possible rim, but they are inexpensive, very durable, build up nicely, and are 460 grams in 700C. The CR18 works well with mid-size tires like what you are considering. You can get much nicer tires that will...
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