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  1. ColinC

    No power/current display after Ultra 620 Canbus-UART conversion?

    I'm working on a fat bike build/modification with a bike that came with the newer CANBUS Ultra 620 motor. I really need to be able to tweak/tune the motor settings, so I decided to convert my Ultra to UART. Everything seems to work OK (although the pedal assist seems slow to engage, but I'm...
  2. ColinC

    Ultra + Rohloff + belt drive & 60T/22T?

    That's a good idea amberwolf on the enclosure; I'll need to see if there is some kind of solution there. I agree biphaeboh on the torque question, particularly in light of the 60/22-26 ring-cog combination. I did reach out to Rohloff to see if they had an opinion. I've come across some...
  3. ColinC

    Ultra + Rohloff + belt drive & 60T/22T?

    Hello! I’m looking to build or buy-then-modify my second fat tire ebike. My first, which has been good, pairs a BBSHD with a 40T Lekkie chainring and Sunrace 11-46 cassette. Having biked with that arrangement for a couple of years now, I’d really like to move to an internal hub and belt drive...
  4. ColinC

    Unicorn search? Off-road fat step-through + internal hub?

    18-20mph tops, and that's just on a few gravel road downhills. Most of the ride it's much slower than that...
  5. ColinC

    Unicorn search? Off-road fat step-through + internal hub?

    You're right; that Atlas does check a lot of boxes. While as deep a step-through as others, it looks like the TT slopes down more than my current bike for a reduced step-over. I'll need to take a closer look at the low-end gearing; I watched a video last night from a cross-country adventurer...
  6. ColinC

    Unicorn search? Off-road fat step-through + internal hub?

    Thanks for the input on the clutches/hubs. And very true as far as fat tire rolling noise when on gravel roads (I don't ride on pavement, but obviously true there too). But for the surfaces on which I ride (seldom on trails, let alone well-packed trails), and at the speeds I do (relatively...
  7. ColinC

    Unicorn search? Off-road fat step-through + internal hub?

    Well, this set of features (or many of them) is relatively common in e-bikes for hunting, which although I'm not hunting, is pretty close to my use case--much more so than typical trail/mountain biking. I'm carrying considerable weight (a backpack and a rear rack pack) with cameras, batteries...
  8. ColinC

    Unicorn search? Off-road fat step-through + internal hub?

    Hello! I’m looking for what might be unicorn, but wanted to see if anyone has ideas/suggestions. I’m a backcountry nature photographer/trail camera enthusiast and have been using a BBSHD-converted fat tire e-bike for several years now to get to rough/remote locations. I’ve spent enough time on...
  9. ColinC

    Ebikes on BLM land

    Considering what BLM has allowed on many of its lands in the American West/Intermountain West as far as poorly-regulated cattle and sheep grazing (= welfare ranchers like Cliven Bundy), it has little credibility as any kind of land steward in the first place...eBikes or otherwise. If you've...
  10. ColinC

    25000 mile club

    Wow...great accomplishment--congratulations! 'when I underestimated the lubricating quality of cow poo on a sharp corner...' Yes, I've discovered the same during my off-road riding in US public lands, almost all of which are regularly grazed by cattle. What's deceptive as you've probably...
  11. ColinC

    Creaking bottom bracket: anti-seize?

    So what exactly was "creaking" with your pedals? I appreciate your thread here...I've got a little "creaky" too I'm investigating...
  12. ColinC

    Improving BBSHD chainline: 42T Lekkie or Eclipse?

    You make a good point cavi...I'm considering that too...I don't like the idea of losing that climbing ability either. That's an interesting idea SlowCo; I hadn't considered that. Trade-offs are always tough...I want it all!!! :lol:
  13. ColinC

    Improving BBSHD chainline: 42T Lekkie or Eclipse?

    I'd like to improve the chainline on my BBSHD fat bike. Attached photos will show my current setup with the Eclipse 36T ring. I'm not throwing the chain, but shifting is rough and certainly there's chain wear when I'm in the larger rear cogs of my Sunrace CSMS8 11-46. I have the 120mm BBSHD and...
  14. ColinC

    2017 Growler 'Mr Big Stuff' 26" MTB fat bike BBSHD build summary

  15. ColinC

    Holding your pants and your battery...

    Not many people--thieves or otherwise--where I ride ;) Those hose clamps/elec tape sounds like a secure/stealthy solution...not real handy if you need to remove the battery though. That mud guard is 'ok' but not great--what are using that follows your wheel as you say?
  16. ColinC

    Holding your pants and your battery...

    I'm sure I'm not the first to use a belt to secure a frame-mounted battery, but thought I would share this one which seems to work well. https://www.amazon.com/gp/product/B07S2R2QD6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 is the belt off Amazon. The thing I like about it is that it has...
  17. ColinC

    Reputable/reliable 48v batt sellers for BBSHD build

    Sorry if I wasn't clear, I meant the USB charging port on the UPP battery...
  18. ColinC

    Reputable/reliable 48v batt sellers for BBSHD build

    Hey thanks for the reply. I ended up ordering the Sanyo GA version of their 17.5an battery selling on eBay for around $535 + tax. This shipped out of their Texas warehouse, and I received it in 3 days. I've only had a couple of rides with it so far, and I have no prior experience with ebikes...
  19. ColinC

    Chain break blues...drivetrain upgrade options?

    Well Dogman I think you were correct. I threw on a spare 10spd chain I had and I've had two solid rides since with no breakage, so clearly an issue of some sort with the first chain. Long-term, however, it seems like having a beefier overall drivetrain makes sense, starting with an all...
  20. ColinC

    Chain break blues...drivetrain upgrade options?

    Interesting that you've had good luck with the 12spd. I've read in a few other threads that others were opting for 10spd and below drivetrains to avoid the thinner/weaker 11spd chains. But there seems to be a lot of inconsistent experiences folks have with their chains breaking, which I...
  21. ColinC

    Chain break blues...drivetrain upgrade options?

    'Got out on my first ride today with my BBSHD conversion on my 26" fatbike. What a blast...I can see why these mid-drive kits and ebiking in general is so popular! The fun ended quickly though when my chain broke. I knew this was a possibility with my 11spd setup, but decided to keep my...
  22. ColinC

    Exchange 120mm BBSHD for 100mm (chainline concerns)?

    I see what you're saying. Yes, that spider-looking bracket that bolts to the motor obviously has to go up against the BB. But then after that spacer(s) enough to reach the threads and then the two nuts. Not enough spacers in the Luna kit for this, however...I think I need to make my own from...
  23. ColinC

    Exchange 120mm BBSHD for 100mm (chainline concerns)?

    OK, so I'm doing a BBSHD build on a fatbike model with no prior builds for guidance. I measured carefully, posted some threads, got some advice, and ultimately decided the 120mm size was the 'best bet' due to concerns about clearing the chainstay. Good news is there's no issue with the chainstay...
  24. ColinC

    Reputable/reliable 48v batt sellers for BBSHD build

    I appreciate the advice bakaneko; I think the LG H2 pack makes sense. I was just trying to confirm my understanding of the whole pack configuration issue as that relates to the amp draw issue. I'm seeing very few of the longer/thinner 'shark' style packs that have the amp draw capacity being...
  25. ColinC

    Reputable/reliable 48v batt sellers for BBSHD build

    So I've been reading up a bit in these forums and elsewhere (e.g. this helpful post/set of calculations from Matador https://endless-sphere.com/forums/viewtopic.php?f=3&t=85629#p1252830, and it seems that a key factor in this whole "continuous amp draw" issue is the configuration of the battery...
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