Nuvinci is all the rage lately, and it seems to be a good solution to dealing with fat tires that tend to rub the chain in the lower gears as well as the incessant chain jumps & breakage that comes with shifting a mid-drive under load. Two weeks ago Fallbrook (Nuvinci) announced the release of a…
Seems like I’ve been getting a lot of emails about the Origin 8 Crawler fatbike with the Nuvinci hub from people wanting to do BBS02 conversions on it. Seems like a decent platform although pretty hefty at a claimed 42lbs, probably for the smallest frame size. 42lbs is the same weight that my singlespeed Deadeye…
This post is designed to help people navigate the world of cheap Chinese ebike products without ending up getting ripped off and saving the most money they possibly can. Where to buy from The three big options for chinese goods are Ebay, Alibaba\Aliexpress and direct from a Chinese vendor’s website. Each of these options have…
I got an email last week about replacement costs for a Bosch Battery direct through Magura USA who is the US center for Bosch ebike parts and repairs. I’m not a big fan of the Bosch drive system (you can see why about 1/2 down the post here) but I thought I would do a financial…
Keeping up with the ‘I destroy more gear than anyone I’ve ever met’… My 7th time out on my AWD Reaper I was bogged down in 8 inches of heavy wet snow dumping 2400 watts into my drive system (1200W front and 1200W into the BBS02) while not really moving much at all when I…
If you mount a hub motor that is over 500 watts on any bike frame you’re going to want to use a Torque arm to prevent your dropouts from opening up under load and in some cases catastrophically failing. There are a couple good options from Grin Tech that involve hoseclamps (the v3 and 4v…
For most people using the PAS system on the BBS02 they have had to get used to just barely pulling in the front brake (enough for the motor to disengage) in order to up shift without putting serious strain on their chain and risking breakage. Paul from em3ev is now selling a Giant Green Button™…
For information on the programming parameters and what they do you should check out The Hackers Guide to Programming the BBS02 located here. UPDATE: The BBSHD is programmed in the exact same way with the same software as the BBS02. Just make sure you set the Limited Current (Amps) to 30 not 25 which is…
One of the biggest problems with Electric Fatbiking is deep snow. Too often your bike will dig in and down into the powder and you are stuck trying to wedge your bike out of the snow to get going again. When you are cruising fast and the front wheel slips off the trail and into…
I’ve been procrastinating about doing this post for a while now because I honestly feel like hub motors have no place at all on trail-riding fat-bikes except maybe as the front wheel of an AWD ebike. The wheels are way too big and the torque is far to limited to be of any use at…
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