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wheel size in display is for speed calculation, it's the measured height (diameter) of the rear tire on rim (usually between 28" and 30" on 27.5+/26 fat/29). on some other controls (the Cycle Analyst is one example) it's input in circumference rather than diameter.

The solution to wheelie control is absolutely just to shift your weight forward, it's also the solution to cutting through wet snow in the winter. Low front handlebars help... Also worth pointing out, I can still take the front wheel off the ground easily with a 54T chainring, on account of...

Your best bet will be to actually ignore the throttle for the first while: the ultra motor, programmed accordingly and not unduly interrupted, should ride perfectly in PAS only. Once that's working as intended, bring the throttle into play (they're handy for taking off at stoplights, that's...

Sounds like there is some tuning to sort out IMO. The bike is honestly capable of being phenomenal in traffic, I've ridden the Ultra Eagle myself and test drove in various settings, it was excellent, comparable in most ways to my own custom Ultra 1000 street machine. Maybe the shift sensor is...

Over-rated, I disagree. I love the power level of my Ultra motor bike, and how natural it feels. I ride daily in traffic matching speed up to 60 km/h, that just isn't possible with lower powered motors... But this is specifically a road application, not your typical eMTB trail and mountain use...

Yep there is definitely a little learning curve coming from hub motor to powerful mid-drive, I did the same. My girlfriend rides the hub drive bike (bafang G60), it's a reliable commuting solution. Me, I prefer the Ultra motor for road commute since it's got a much greater top speed, for my...

Just a heads up: far as I know you can only change user parameters, not firmware. The firmware is what's in the motor controller and only bafang has the ability to reflash that... That's where the bulk of this so called "secret sauce" resides. The user parameters or "programming", is for the...

Haven't been on in a while but I get the feeling there's some confusion about remote programming service, which I believe is a very new service from Biktrix (I wasn't even aware of it till I found this topic). I think maybe that response from Alex was misworded slightly: the excellent "stock"...

Hahaha, really? Honestly I think it's amazing to be delivering bikes anywhere near on-time during this first COVID year, regardless which couriers get picked, the most important attribute of the year is AGILITY hands down... the capability to adapt to constant changes in supply chains and...

Yep they are a huge improvement, perfect cranks for the Ultra motor!

Send er!

I've run SRAM NX-11 and X01-12 speed on my Ultra, the issue with shift sensors is that a) it doesn't interrupt until you've initiated the shift, and b) you have no control of the interrupt time. With a good manual switch you have the advantage of fine tuning your own reflexes, exactly like you...

Been using an electronic "clutch lever" on my Ultra bike since late 2018, I won't have a mid drive ebike without one! It takes over the connection from the front brake interrupt. Built from a cheap brake lever housing with a custom single finger lever, sits right below/behind my front brake...

That's a fair price for extended warranty, although personally I'd just save those dollars on the side for case-by-case repair or upgrade... But I've also got a complete home bicycle shop and tools, I live a voided-warranty lifestyle lol. Biktrix is really good with their warranty work though...

Stunner X with those smaller wheels will have a lot of pick up and go... It will sit fairly low to the ground, so I'd expect it may need shorter crank arms (which IMO are always better on ebikes anyways!) Check on the Biktrix facebook owners group, lots of owners posting pics. I bet somebody...

They're a really new model, I test rode one the first week they showed up at Biktrix. Quick and light! I really liked the fact the two versions of it had different handlebars: swept riser bars on the stepthru, and clean low flat bar on the stepover... That second setup totally suits me and I...

Daaamn that's quite the operation! Definitely reminds me of a few places I've worked, but some of this tech is actually way ahead of the curve in not only bike industry... NX parametric CAD design, CNC carbon layup, Renishaw titanium additive... Beauty!

Nah they are both great motors. For 1200W peak the Classic is a beast! HD isn't "much better" it's just a bit more amperage (and weight!).

In my experience, riding 5000km per year, you'll notice range loss in the third year. With satiator/smart charging techniques that will be reduced. I mostly use the satiator because it's fast, safe, and informative (and my partner and I use it daily for top up to 85%). Buying new battery pack...