Re: BMW's experimental 'eRR'

Topic Approved.

So, its not yet clear how many bhp it will make, but BMW tells us that its torque enables it to accelerate faster than S1000RR "for the initial sprint up to 50-60 kmph speed".
Tech specs will be revealed later.


So, will it subordinate the existing Lightning LS-218's dominance? For that it will have to be above 200 bhp, or have a really decent overall weight.

Re: BMW's experimental 'eRR'

Since it is an Electric powered motorcycle so it can have basically Torque right from the 1K revrange.So it will have a crazy initial speed and it will be loosing the steam furthur down the RPM range,much like the Teslas for Car.

But then its an electric and no Exhaust note(600i with XL55,best Exhaust note ever)

Re: BMW's experimental 'eRR'

Yea that part doesnt seem all that clear. It does look like they are gunning for the 218

However imagine riding this bike on a highway with no exhaust note. You are going super fast but you are silent at the same time. Some people including me would enjoy that!

Re: BMW's experimental 'eRR'

Haha agree with I [emoji4]

Re: BMW's experimental 'eRR'

Actually, the type of electromotor usually used in electric vehicles has full torque right from standstill. This is of course completely unlike internal combustion engines.

Also torque usually is either stable or decreasing when going up through the RPMs.

This means that an E.V. will move off its spot much faster than any vehicle with similar weight and horse power with I.C. engine.

Proper electric bikes with enough range and a good amount of BHP should be a real hoot to ride.

Re: BMW's experimental 'eRR'

Not every electric vehicle can outrun the S1000RR even upto 60 kmph, it has to be in a big league for it.
But I think most electric motorcycles with about 60-100 bhp should have enough torque to outrun S1000RR for the initial 60 kmph.

Of course, the "RR" badge by BMW and their statement, does mean that this bike is up to a certain league of performance... Let's wait & see how much exactly.

Lightning is globally a really small manufacturer to create an impact on BMW, however, I think BMW got their inspiration from that only. And its a good thing I must say.

A thing to note is that Lightning's creators have designed the Lightning to create a "whizzing" kind of motor noise when its in operation, even at as low as 80 kmph, around 2500 rpm.

Secondly, talking about Harley Davidson Livewire (Electric bike) prototype, journalists noticed that it too had a kind of loud turbine-squeal sound, when it was being ridden by few journalists... and they loved it.

So, it seems motomakers are aware that silent operation of an electric vehicle might be a problem, safety wise... I think they're not wrong, but still the idea of riding a silent machine at good speeds makes our hearts skip a beat... No doubting that at all.

Re: BMW's experimental 'eRR'

Oh yeah, the motor sound will definitely be there unless it is encased in a soundproof box or something. By silent I meant, absence of Internal Combustion sounds!

Lightning definitely paved the way. Also dint know about teh Livewire, gota check that out.

P.S: Lightning created the whizzing sound on intention? Interesting!

Re: BMW's experimental 'eRR'

It is what I believe, let me clarify. A normal electric motor makes noise, no doubt, but its not "almost as much as a inline 4 redlining" as Lightning is.
E-races around the world are notably silent than their ICE counterparts, although now exceptions are there.

So, what do you conclude? I conclude that its purposeful noisemaking for the purpose of safety. Nothing else explains it. I could be wrong too.


EDIT: Yes, noisemaking to alert people around of the presence. Horn has its occasional use, but vehicle noise is necessary to an extent.

Re: BMW's experimental 'eRR'

I am not knowledgeable about this but how do you explain 'noisemaking for the purpose of safety'? As in alerting the people in the surrounding of the presence of the motor?