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Lol fair point 😂... seriously though it shouldn't be too hard to sort this problem out. Maybe 3 gears and a motorcycle chain? 😋 I do like the idea of going rohloff anyway, and their e14 is specifically made with this application in mind. Might have to give it a go.

I have a Biktrix Juggernaut FS Ultra 1000! Love Biktrix and the bike... can't say enough good things. I will say I am very hard on the cassettes (on purpose). I like to do multi-mile stretches in PAS5 sport mode (1500W continuous) with me also cranking as hard as I can (+250-300W) to the 11T...

Awesome thanks!!! This is exactly the info I was hoping for. I'll drop @pushkar a message. There's lots of options with Rohloff, so before dropping that much money on a wheel I want to make sure it's going to work :). Ideally looking for an expert to build the wheel too. I'm not sure I...

I think you might be thinking of freewheels (the technology that came before cassettes) -- they used the last cog to tighten the whole thing together and so it was easily replaceable? Not exactly and option these days, but it's a great idea! A lot of cassettes have independent cogs that aren't...

Thanks for the thoughts! If you watch the videos for the SRAM EX1 (e-bike specific groupset), the designer of the cassette says it's designed to shift under load: https://www.mtb-mag.com/en/interview-srams-ex1-cassette-engineer-henrik-braedt/ (see the video in the article) I wasn't saying I...

Hey all, I ride a bafang ultra based ebike. I keep going through cassettes, at a rate of about 1 cassette every 200-300 miles. I really only have problems with the bottom 11T ring, as I often do stretches at 35-40MPH with the motor cranking at 1500W. The small number of teeth (I think) get...

I'm curious about the range in cold weather as well. I've noticed now that it's colder my range has dropped quite a bit (not unexpected)... I've also been thinking about a battery cover of some sort, but it rains a lot where I am and I want to make sure I don't create something that traps water...

Hey all, I've now got about 400 miles on my ultra FS and I've got some additional thoughts to share. I've made a couple mods to the bike, but before I get into that let me say I am still super happy with the bike, and I love riding it day in and out -- regardless of weather. The mods: - I...

Regarding the chain situation, I went through a similar problem on my ultra FS. I tried a couple off the shelf chain guards, none of which really helped or fit properly because they're not made for e-bikes. In the end I took it to the shop and asked them to find and put on a bash guard that...

Ugh, sorry to hear about the injury Brad! Sounds brutal! I appreciate the warning though, because you're right... I am old and have brittle bones. The added weight, and speed, of the e-bike start to feel normal quickly, so I can see how you can get into trouble much quicker. Hope you heal up...

Hey all! I've been riding around on my Juggernaut Ultra FS for about a week now and I love this thing. I put a review up on reddit here, in case anyone is interested: TLDR: I love this thing, and BikTrix was great to deal with.

Wow this is super interesting. If the calculator is right, bike and rider weight make almost no difference, looks like rolling resistance is the biggest factor. I sort of knew this but I didn't realize how big of a difference riding surface would make. Makes sense then, that adding some...

Here are the bafang error codes: https://electricbike.com/forum/forum/knowledge-base/motors-and-kits/bbshd/7747-bbshd-bbs02-error-list I looked up the ultra manual and it uses the same codes. Looks like speed sensor may be the culprit despite what you're seeing? I recall reading in some other...

Hey all, On a regular bike I tend to track watt/kg output as a good measure of fitness progress, but obviously this doesn't work so well on an ebike. I'm looking at installing a power meter on the ebike (when it arrives!) but I'm having a hard time finding one I know will be compatible with...

While I'm waiting for my juggernaut to arrive (just ordered recently!) I'm in the process of stocking up on accessories. I'm considering a bike computer, rear light, and dashcam system (considering the Cycliq or maybe I'll just use an old gopro strapped to my body / backpack). For lighting, I...