vantage

No idea to be honest. My bbs02 shuts down when the battery hits 41v. Minor hills can be done with 42v and 43 will climb slightly steep. 44v is my cue to recharge the battery. Obviously, these numbers vary wildly depending on the hill, wind speed, tyre pressure, human effort and pas used. This is one of those questions that only your experimentation can answer.

I'd suggest getting your display to show volts instead of percent re battery range. Far more accurate. I tested this myself. My battery shows 54v on a full charge. If I do 20 miles it'll show 2 or 3 volts less than when I started but if I had percentage showing on the display, the battery will still show as 100% which is complete horse crap. Volts are far more reliable.

Other than reasons I've stated earlier, what possible reason would you have to pedal and brake at the same time? Even in that case, the motor would only be under the same strain as it would under a steep hill climb...depending on how hard you're pedalling obviously. Throttle shortages etc can be overcome by a very technical method known as "the off button". It's a fantastic device.

Nonsense.

I disconnected then chopped the brake sensor cables so there weren't any dangly wires flapping about. I've tweaked the motors settings so it stops running the second I stop pedalling. I find that in some circumstances, I can use the motor on rocky uphills yet still use the brake to control the motors power if it runs away from me. I found out that using the brake sensor in the same situation sometimes lead to a complete loss of power and so lack of forward momentum thus leading to a close up view of the ground.

That's does actually make more sense...carry on

It was indeed a rubber mallet that I used as it kept coming loose. I have the motor limited to 500 watts which it almost never reaches. The bearings that went are the ones you see at the bottom of the table. There's one set just behind the main drive cog and another next to the locking ring which we're talking about. That's the one that got crushed on mine. Those ones are I think for side to side play. There are needle bearings for the rotational side of things...all this is theory of course as I'm not an engineer.

You wanna be careful with tightening that nut. I recently had to rebuild my BBS02 because the bearings had been obliterated due to overtightening. Not something I'd wanna do again.

I'd advise checking what type bottom bracket you have. Mid drive units such as the one you want are built for use with an older style square taper bottom bracket. I suspect the bike you are wanting to use has a hollowtech bottom bracket and therefor will need an adapter which I recently discovered is ridiculously expensive. I'd also advise checking whether the battery supplied with the kit will fit your bike. I already have the kit you linked to (with a slightly smaller ring) and I've discovered these issues while trying to fit it to my new bike. I've ended up having to buy the adapter (£110) and a new battery (£220). I had it fitted to a 700c touring bike and was able to ride along on a flat road with minimal wind at around 28-30mph. I don't expect a huge difference when it's mounted to my mountain bike. In most kits, Bafang include their own lockring tool. You will (if I'm correct about your bottom bracket) need a tool to remove that. About £15 at the most. Other than that, it's just Allen keys and some zip ties to tidy up the cables. Oh, and a star key to tighten the wheel sensor magnet.

Help! My old bike with a bbso2 was killed in an accident and I'm wanting to transfer the motor to my new bike...however...the new bike has an MT500 pressfit 92 bottom bracket. I believe this to be of hollowtech 2 heritage. The old bike was square taper. Can I get advise on exactly what sort of adapter I'll need to do the swapover? There's stuff out there on Google but it's a bit higgledy piggledy. Thanks.

Time for an update me thinks. Thanks for all the help so far. I've taken a somewhat different route though. I've a BBSO2B 48v 750w motor and 20ah battery arriving tomorrow. That'll give my bike a bit more muscle and if I understand correctly, give me a bit more mileage between charges too, especially if I back the amps down a bit too as I don't really need 750w.

The pedal speed limit I've just reset to 40kmh. Probly pressed it by accident to display speed limit.

700 X 42c. I've set the keep current to 100% but I think I've adjusted something else too. Out with the doggy tonight and the bike was sluggish as anything. I'll look tomorrow. I'm knackered.

No it was perfectly silent. No cutouts. I just know I was having to pedal like a madman to keep moving. The only info I have on the battery is the advertised lingo from when I bought it. Hailong G70 36v 20ah with a 35amp fuse. I've read that the standard BBSO1B 250w can't handle more than 20amps so advised not to go over 18amp for safety. I've almost no idea about electric current and how it's measured etc but I saw somewhere that my setup of 36v 18amp is 350w? Should I remove my head from my rear posterior?

No idea about voltage sag. If memory serves, the display showed it dropping to around 34v and it had already done a good 15 miles of hilly rocky rough trail. Same thing?

You must be alot stronger than me then. Battery is 20ah. The bike and I weigh maybe 90kg. Luggage was I'd guess around 40 or 50kg. Gearing is 40t front and 36t rear. Much lower than yours. I got to the top of that climb and couldn't catch my breath for a good 5 minutes.

I have indeed. It's currently running at 18 amps but I darent go any higher incase I fry it. I'm not long back from a failed tour in Wales and the motor struggled heavily loaded up a 20% climb. I was hoping a bit more torque can help there.

Is this correct? Does such a thing exist? Bafang Mid Drive Controller BBS01B BBS02B BBSHD 36V 250W 350W 500W/48V 500W 750W/52V 1000W Latest Model https://amzn.eu/d/aseRsky I'm currently running the 250w 36v legal version and wondered if this thing can be just bolted on. If so, would it have a higher rpm and/or higher torque? I've seen something similar on the pswpower site. Any help on this would be greatly appreciated.

Locked out? As in the 15mph limit? Mine was limited by software. A specialised USB cable and an app/program allowed me to adjust the max speed to 40kph (whatever that is in mph). That max can be set within the motor itself or by the display on your handlebar. Using the display you could tweak that max speed on the fly should the local Bobby question you. Unlikely. They have bigger fish to fry.

Locked out? As in the 15mph limit? Mine was limited by software. A specialised USB cable and an app/program allowed me to adjust the max speed to 40kph (whatever that is in mph). That max can be set within the motor itself or by the display on your handlebar. Using the display you could tweak that max speed on the fly should the local Bobby question you. Unlikely. They have bigger fish to fry.

I'm not sure my ebike 'changed' my life, but it allowed me to carry on a life I previously had. 5 years ago I suffered a stroke at the age of 41. A result of lifelong poor diabetes management and smoking for 10 years. I'd been a lifetime cyclist and even spent some years racing them and the stroke took that away from me. Lost my balance, strength and endurance. Didn't ride for 6 or 7 months and when I did it was with a council run social group and even then I was struggling to keep up. Jan last year I decided that cycling was no longer the fun activity I loved as I was throwing up at the top of easy hills and having constant diabetes complications and vowed to sell the bike I'd built from scratch. Earlier this year I visited my dad and he had me try out his ebike. I loved it! Got gome and started making plans to buy one myself. Nothing caught my eye then I heard about conversion kits. Knowing nothing, I just bought a bafang bbs01b as it seemed to be what most people recommended and I haven't looked back. My Spa Wayfarer tourer that was almost in danger of being sold has been transformed into a new bike and whilst I'm not exactly doing the mileage I used to (60-70+ miles) due to battery range more than anything, I'm getting out and slowly getting fitter. I'm happier too. Dad and I are eTouring Anglesey in Sept too

I'm not sure my ebike 'changed' my life, but it allowed me to carry on a life I previously had. 5 years ago I suffered a stroke at the age of 41. A result of lifelong poor diabetes management and smoking for 10 years. I'd been a lifetime cyclist and even spent some years racing them and the stroke took that away from me. Lost my balance, strength and endurance. Didn't ride for 6 or 7 months and when I did it was with a council run social group and even then I was struggling to keep up. Jan last year I decided that cycling was no longer the fun activity I loved as I was throwing up at the top of easy hills and having constant diabetes complications and vowed to sell the bike I'd built from scratch. Earlier this year I visited my dad and he had me try out his ebike. I loved it! Got gome and started making plans to buy one myself. Nothing caught my eye then I heard about conversion kits. Knowing nothing, I just bought a bafang bbs01b as it seemed to be what most people recommended and I haven't looked back. My Spa Wayfarer tourer that was almost in danger of being sold has been transformed into a new bike and whilst I'm not exactly doing the mileage I used to (60-70+ miles) due to battery range more than anything, I'm getting out and slowly getting fitter. I'm happier too. Dad and I are eTouring Anglesey in Sept too

I've had my BBS01B 250w 36v for just under 2 months. I live in Bolton. I can tell you right now that it's more than powerful enough for Bristol. I've set my PAS levels so that each one gives a 10% increase in power than the last for easy management. Level 5 (50%) gets my 700c 30kg tourer plus my own 68kg lump up 15% hills with no problems.

I've had my BBS01B 250w 36v for just under 2 months. I live in Bolton. I can tell you right now that it's more than powerful enough for Bristol. I've set my PAS levels so that each one gives a 10% increase in power than the last for easy management. Level 5 (50%) gets my 700c 30kg tourer plus my own 68kg lump up 15% hills with no problems.