Levo Gen 2 So how many levos go bang after owners mod or chip motors?

[apac]

A long long time ago .... in a galaxy far away ..... I started logging motor failures against numbers of motor types on the forum. I combine this with information from friends with bike shops who sell "multi-brand" to at least give me some form of structure to work from.

The numbers are way way too open for errors because of the presumptions I have to make, hence why I normally don't even mention them - except lately, to reassure people that the odds are that your e-bike won't actually break and we don't all need to live in fear.

I started it selfishly just for me, as at the time I was terrified I'd buy something which would break. I stopped logging last week as it's generally pointless and for me it served it's purpose.

So over the last 12 months, My Guestimated figures put Brose failures at 7%. That's higher than Spesh say, but then Spesh are probably talking about all e-bikes and I'm only measuring mountain bikes.

For comparison, using the same system, I have e8000 failures at 5%.

If he's changed 120 motors and you then compare that to the enormous catchment area Berkshire cycles has when it comes to repairs- All of the UK ! The numbers of Kenevo's and Levo's out there is a crazy number ! So the 120 as a % is tiny.

I ended up buying a Kenevo .. it's had the crap hammered out of it by an incompetent moron and it's totally problem free.

EDIT : Also to note : using the same logging system, Bosch Gen 4 is presently more prone to failure than Brose. Fortunately this is only software related so they can address it quite easily.

I'm not completely sure how this relates to the discussion (maybe because specialized increased the amperage on the Brose?) but this information is incorrect so I'm just flagging it so someone else doesn't read it and internalize it.

watts are a measure of power
watts = volts * amps

You need more power to accelerate faster, and more power to push more wind to hold a higher top speed. The rest is just gearing.

from my experiences building Very large battery packs what I have said it very true.

 

[wepn]

from my experiences building Very large battery packs what I have said it very true.

It's not only that last sentence that makes it true...actually that's pretty sufficient
I think this might be at least half correct:
+ Amps = + power torque climbing towing heat & energy consumption
+ volts = + speed but - range or a larger heavier battery

 

[speedkills]

from my experiences building Very large battery packs what I have said it very true.

I wasn't trying to convince you with science over experience, just a heads up to others who might read it that they might want to read up a bit before trusting your experience, or my statement. But if you want to experience the difference first hand, get ahold of a Levo limited to 16 amps, derestrict it, gear it for top speed and see how fast you can go. Then do it again at 20 amps.

 

[dogzilla]

DC electric motor speed is proportional to voltage. So it's true to say that to turn an electric motor faster, you need more volts.

That being said, we're talking about a geared system so the output rpm and therefore max speed is more a function of torque and gearing, and torque is proportional to current.

So in an ebike with gears, more amps will mean more torque and a higher speed.

Also with regards to simply derestricting the speed limiter, it's not adding any additional load in itself because you're not changing the operating limits of the motor. The volts, watts, amps or rpm of the motor are unchanged.

If a motor is working at 250watts, it doesn't matter to the motor whether you're climbing up a 15% grade or whether you're on the flat doing 35km/h. Going faster would infact provide more cooling to the motor.

The only thing it changes really is the potential for higher average loads on flatter courses but it's no different to you cycling uphill for the same amount of time.

 

[RichG99]

Mine blow yesterday with Levocyraptor on it and 38 Chainring 2600km,i get a new Motor and Spesh analyze my old Motor on manipulationan then decide Garantee or not,when not i must pay 1000 bucks plus the Mechanic.

Stay tuned....

Brose Motor ever.

Did you have to pay for this in the end? Levociraptor is supposed to be undetectable if you follow the correct reset procedure before sending back. Interested to know if they spotted it or not. Private message me if you don’t want to post up the answer.

 

[ReinerSt0ff77]

To many Motors to anal yze them.