Help with fat tire and bbs02 build

[Trucker]

Hello all,
I’m looking for help how to choose frame for fat tire Ebike build that will accept bbs02 motor 68-73 mm bottom bracket. All fat tire bikes bottom bracket I believe starts at 100 mm. I would like to stay with my current set up. Is there any solution to this? Or it might be coming down to use a mountain bike and fit it with like 3” tires and find one that uses 68-73 bottom bracket.
Thanks.

 

[Chalo]

If you use a normal bottom bracket width and chainline with fat (like 4") tires, the chain will rub on the side of the tire in some gears.

Fat tires are for one of four things: snow, sand, mud, and idiots. If you're not riding regularly on one of the three relevant surfaces, that puts you in the latter category. On regular pavement and trails, those tires are heavy, slow, poor-handling, expensive, and easy to puncture. Nobody ever rides a bike like that without a motor, unless it's to crawl across inadvisable surfaces with super low gearing. Most fat tire e-bikes lack the power, gears, and low speed range that would be necessary to make them work on snow or sand, so all their fat tires do is slow you down, shorten your range, handle terribly, puncture easily, and wear out quickly.

If your BBS02 is made for a real bike, put it on a real bike. Right off the bat, you'll seem at least 25 IQ points smarter. 2.5" to 3" wide tires do everything better than 4"+ tires except for riding on certain kinds of snow, sand, or mud... or being an idiot.

 

[A-DamW]

Hello all,
I’m looking for help how to choose frame for fat tire Ebike build that will accept bbs02 motor 68-73 mm bottom bracket. All fat tire bikes bottom bracket I believe starts at 100 mm. I would like to stay with my current set up. Is there any solution to this? Or it might be coming down to use a mountain bike and fit it with like 3” tires and find one that uses 68-73 bottom bracket.
Thanks.

Probably the easiest would be to get a BBS02 or BBSHD with a longer spindle, they come in three sizes, and fit BB's with:
68-73mm,
74-100mm,
101-120mm,
width.

 

[E-HP]

Or it might be coming down to use a mountain bike and fit it with like 3” tires and find one that uses 68-73 bottom bracket.

3” is plus sized, not fat. Just look for a bike that can fit plus sized tires. I ran 3” tires on my mountain bike frame, no problem, but the 2.8” I use now feel better for my style of riding.

 

[hillslayer@]

I replaced the front 4 x 26 with a 3 x 27.5 on my fat tire bike and it turns 10 times better.