Kudos Rapide gets 108 miles out of a 10.4 Ah battery.

flecc

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Oct 25, 2006
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The rider did at least 84% of the work then, just 16% electric propulsion.

Since the additional weight of the e-bike over a good road bike would have used at least that 16%, he'd have been better off on an unpowered roadbike.

Kalkhoff did the same with a team of three riders, each of the three completing 100 miles on a 10 Ah battery, riding Pro Connects on a track.
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Kudoscycles

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The rider did at least 84% of the work then, just 16% electric propulsion.

Since the additional weight of the e-bike over a good road bike would have used at least that 16%, he'd have been better off on an unpowered roadbike.

Kalkhoff did the same with a team of three riders, each of the three completing 100 miles on a 10 Ah battery, riding Pro Connects on a track.
.
Tony....not on a track on normal roads.
Dave
 

flecc

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Oct 25, 2006
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Tony....not on a track on normal roads.
Dave
Yes, I realised that Dave, possibly not all in one continuous cycle ride either. I mentioned the Kalkhoff case to show yours was better than that.

I don't think these efforts have any meaning for the average e-bike customer though, most want to know if they'll get up hills without pedalling! :rolleyes:
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Kenny

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For the sake of consistency on the Forum can we not all agree to quote the average battery consumption as 12 w/hr per mile.:)
There are a few who eek out a fair bit more a few who can blitz it up to double and more that rate.
I've been reading this Forum long enough to be fairly confident that 12 w/Hr per mile is around what most riders achieve.
 

flecc

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Oct 25, 2006
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For the sake of consistency on the Forum can we not all agree to quote the average battery consumption as 12 w/hr per mile.:)
There are a few who eek out a fair bit more a few who can blitz it up to double and more that rate.
I've been reading this Forum long enough to be fairly confident that 12 w/Hr per mile is around what most riders achieve.
Absolutely true Kenny, and why I quote 12 Wh per mile as average. It's been proved in past threads where we've collected the averages members get.

The very low figures a few get are very misleading for newbies.
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Tomtomato

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Apr 28, 2015
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For the sake of consistency on the Forum can we not all agree to quote the average battery consumption as 12 w/hr per mile.:)
Nope, as my bike consumes about 6 watts per mile, with the lower assistance on all the time, on a number of paths, with wind, and with assistance/cycling all the time (crank-driven bike).

I guess people with an electronic moped/throttle can probably look at 12w/mile only, but this would be a very low range for an actual bike.
 

Artstu

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Aug 2, 2009
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Nope, as my bike consumes about 6 watts per mile, with the lower assistance on all the time, on a number of paths, with wind, and with assistance/cycling all the time (crank-driven bike).

I guess people with an electronic moped/throttle can probably look at 12w/mile only, but this would be a very low range for an actual bike.
Nope 25 wh per mile with no throttle and a standard low power Bosch. Just like the length of string question.
 

Tomtomato

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Apr 28, 2015
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Nope 25 wh per mile with no throttle and a standard low power Bosch. Just like the length of string question.
Exactly, so it's not just as simple as using 12w/h as an average.

It's a little bit more complicated, depending on the type of motor, type of bike, condition of use etc.

Quoting an average figure of 12w/h is the same as quoting an average mpg for all cars available on the market, under all driving conditions
 
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Kenny

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Jun 13, 2007
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Nope, as my bike consumes about 6 watts per mile, with the lower assistance on all the time, on a number of paths, with wind, and with assistance/cycling all the time (crank-driven bike).

I guess people with an electronic moped/throttle can probably look at 12w/mile only, but this would be a very low range for an actual bike.
I did say 12 w/hr is the Battery consumption that the majority of riders achieve.

I'm pretty certain your style of riding is very much in the minority.

My suggestion is just so that we could hopefully get a bit of consistency when discussing Battery ranges.
 
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Tomtomato

Esteemed Pedelecer
Apr 28, 2015
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I did say 12 w/hr is the Battery consumption that the majority of riders achieve.
Yes, and the large majority of cars on the road achieve a fuel consumption of 10mpg...or better.

I am afraid there is no such thing as a meaningful average...

I think someone should build a proper estimator tool/spreadsheet, which would take the following inputs:

  • Type of motor (crank vs. hub)
  • Weight of bike
  • Weight of rider
  • Type of bike (road, hybrid, MTB)
  • Type of terrain (flat road, flat path, hills, mountain)
  • etc
 

flecc

Member
Oct 25, 2006
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Quoting an average figure of 12w/h is the same as quoting an average mpg for all cars available on the market, under all driving conditions
Not really like that, it's exactly as Kenny said, the 12 w/h per mile is around what the majority get. A to B magazine with their very long experience of e-biking and e-bike users say the same.

The threads on this we've had in the past confirmed it, a few around the 8 mark, very few below and above the 12 there were decreasing numbers down to about 24 W/h per mile.

There will always be enthusiasts getting better, especially in a forum like this, but the size of their pedalling contribution is undeniably far in excess of that of the average e-biker.
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Kudoscycles

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Apr 15, 2011
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108 miles,80 % tank,say 130 miles max.
10.4 Ah x36v....375 watts.
I make that 3.47 watts per mile.
Actually the same battery is in most of the Kudos e-bikes so all Kudos bikes would look to be the longest range of any e-bike.
If you want a bike to ride 20 miles every day to work,you wouldn't have to recharge for 6 days,that's amazing.
How is this achieved....a secret brain analyses the battery usage and gives it optimally to the motor,it's called the controller!!!!'
So,the Secret should be good for up to about 90 miles and the Tornado for up to 120 miles(slightly higher rolling resistance)
KudosDave
 

soundwave

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May 23, 2015
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should be the 4 f guide.

how FIT
how FAR
how FAST
how FAT
 
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trex

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besides SW 4f guide, here is my estimate for a fit rider keeping to around 13mph and in ideal conditions:

light assist, thin tyres, without throttle and without suspension: 5wh/m
air suspension: 1wh/m
coil spring suspension: 1.5wh/m
comfort road tyres: 0.5wh/m
knobblies: 1wh/m
folding frame: 1wh/m
full power throttle: 1wh/m
for each m/h above 13mph: 1wh/m


example: Kudos Secret: 5wh/m + 0.5wh/m (road tyres) + 1wh/m (folding frame)= 6.5wh/m, its 8AH battery should give about 40 miles. Kudos Rapide: 5wh/m + 1.5wh/m (coil spring suspension) +0.5wh/m (comfort road tyres) =7wh/m. Its 10.4AH battery should give about 50 miles.

an MTB converted with BBS02 riding at 28mph:
5wh/m + 1wh/m (knobblies) + 1wh/m (full throttle) + 1.5wh/m (coil spring forks) + 15wh/m (speeding)=23.5wh/m. A 15AH battery would give about 22 miles range.
 
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Kudoscycles

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besides SW 4f guide, here is my estimate for a fit rider keeping to around 13mph and in ideal conditions:

light assist, thin tyres, without throttle and without suspension: 5wh/m
air suspension: 1wh/m
coil spring suspension: 1.5wh/m
comfort road tyres: 0.5wh/m
knobblies: 1wh/m
folding frame: 1wh/m
full power throttle: 1wh/m
for each m/h above legal speed: 1wh/m


example: Kudos Secret: 5wh/m + 0.5wh/m (road tyres) + 1wh/m (folding frame)= 6.5wh/m, its 8AH battery should give about 40 miles. Kudos Rapide: 5wh/m + 1.5wh/m (coil spring suspension) +0.5wh/m (comfort road tyres) =7wh/m. Its 10.4AH battery should give about 50 miles.
But Trex,you know I am honest about this and genuinely we got 108 miles with 80% remaining,it is really only on a par with Kalkhoff,Quic and Stromer claims...I must be honest and say it uses a highly developed battery containing Lithium and aircraft quality aluminium in the frame,also there is special rubber in the tyres.
KudosDave
 
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EddiePJ

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Yes, and the large majority of cars on the road achieve a fuel consumption of 10mpg...or better.

I am afraid there is no such thing as a meaningful average...

I think someone should build a proper estimator tool/spreadsheet, which would take the following inputs:

  • Type of motor (crank vs. hub)
  • Weight of bike
  • Weight of rider
  • Type of bike (road, hybrid, MTB)
  • Type of terrain (flat road, flat path, hills, mountain)
  • etc

To add to that, elevation gain and the average gradient over the length of the journey.