Bafang rear geared brushless test

[Nogwin]

The motor is a front mount on a 26" (rear is 27"). Bike is 30lb + 6lb motor + 15lb battery + ~10lb for controller and panniers (total about 60lb) and I am ~150lb , so a total of around 210lb combined. I race cat3 here in norcal, and am in very good shape. (Hope for cat2 next year!)

I am very careful to be gentle on the throttle, so I hope all goes well.

Nog

 

[Nogwin]

Still going strong and I passed the 2,100 mile mark today. I've been running 80v for several weeks, and nylon gears are holding.
As mentioned before, I like the freewheeling motor a lot and serves me well. The steel gears are being delivered thursday, and I'll switch to
80v NimH for good after installing them. Overall, a brilliant motor!

Nog

 

[Knuckles]

Awesome!
My observations about metal gear?
http://endless-sphere.com/forums/viewtopic.php?f=9&t=8428#p128322

 

[linear]

Very informative thread on just the information I was looking for. Looking forward to an light weight pedal assist approach with this motor. I see that price info can had by a PM to Knuckles, will have to try that.

Best of luck to all

 

[docnjoj]

Just did a short road test (40F and 25 mph winds. Yuk!) but the steel gear still is quiet. I need to try the Nye Damping grease sample that I got but I hardly notice the difference from the 3 Nylon gears. Great little motor!
otherDoc

 

[Nogwin]

Got several hundred miles on the new steel gear, and I will say the steel gears at >20mph are quite a bit louder. I never heard the nylon much, but with steel now, I get looks now from people. Looks like I will revert back to nylon as I ride in a dense cycling comunity, and I hate those looks I get when I pass people. Anyway, I'll buy more nylon gears, but still run at 72V since it's what's needed for 30mph+

edit * I use one steel and two nylon gears

Nog

 

[docnjoj]

Hey Nogwin! I'm afraid that 3 steel straight cut gears are gunna be noisy no matter what. It.s the law! Composite or better Nylon in the future, maybe? Good luck with your project.
otherDoc

 

[Mathurin]

hey Doc, how is the 1steel gear bafang compared to P2-A? My 36v20A P2-A made just about identical sound to Docabss'es 72v(?) lots of amps X5 Clyte. Basically a murring sound until you get upto a certain speed where other bike noises like tires and wind become louder.

 

[Mark_A_W]

Got several hundred miles on the new steel gear, and I will say the steel gears at >20mph are quite a bit louder. I never heard the nylon much, but with steel now, I get looks now from people. Looks like I will revert back to nylon as I ride in a dense cycling comunity, and I hate those looks I get when I pass people. Anyway, I'll buy more nylon gears, but still run at 72V since it's what's needed for 30mph+

edit * I use one steel and two nylon gears

Nog

Yes, try one metal gear instead of 3.

 

[docnjoj]

Hey Mathurin! I really loved my P2A. Helical gears (one steel and 2 Nylon) but it was the bearings in the steel one which failed. I have all the rebuild parts and someday.............! I think the P2A was slightly quieter, but not by much. Much better quality gearing, but at 10:1 it was slower with more torque than the Bafang. I got close to 3000 miles on P2A before it failed! I really dont know how it would handle 48 volts of Ping power, though?
otherDoc