Thread: Electric Bikes
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Old April 25th 19, 06:21 AM posted to rec.bicycles.tech
news18
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Default Electric Bikes

On Wed, 24 Apr 2019 16:33:09 -0700, Andre Jute wrote:

On Wednesday, April 24, 2019 at 2:30:24 AM UTC+1, news18 wrote:
On Sat, 20 Apr 2019 09:45:36 -0700, Andre Jute wrote:

On Saturday, April 20, 2019 at 12:10:53 AM UTC+1, sms wrote:
On 4/19/2019 3:52 PM, John B. Slocomb wrote:
On Fri, 19 Apr 2019 14:21:17 -0700 (PDT),
"
wrote:

I received an email from a local bike shop. They were
advertising e-bikes. Three of them were shown. $2400 Raleigh.
$4050 Specialized. $5050 Specialized. I had no idea electric
bikes were that F---ing expensive. That is almost Half the price
of one of those $10,000+ Specialized Venge Tour de France bikes.
I have not looked recently, but I am positive that you can buy a
new or used motorcycle, scooter, moped for much less than those
prices. I suppose riding e-bikes can get you some exercise which
is good for you, but if you have to pay that much for it, wow.
It almost makes those monthly gym membership fees seem
reasonable.

Those are name-brand e-Bikes, mid-drive. A decent rear-hub drive
e-bike costs $1200-1500.

You can build your own for much less. At
http://coolmainpress.com/BICYCLINGbuildingpedelec1.html I describe
fitting a front motor


Mid frame conversions are better and fit the riding habits of perople
who would benefit from a e-bike; aka more activity and ICE replacement.

Front and rear motors are not designed for the average bicle rider and
would be rapidly destroyed.


Including a suitable battery in each case, the mid-frame electric motor
installation now on my bike cost almost twice as much as the earlier
front electric motor installation I describe in the post and article you
refer to. The front installation lasted about 3500km and could have been
rebuilt for less than Euro 100 but I'd bought it only as an interim
measure while I learned about electric motors, so I didn't care. I
always intended installing a mid-motor as soon as the mid-motors were a
bit further along the early-adopter timeline (see the Endless Sphere
discussion group on the net) and the packages became a little more
sophisticated, as happened with the D965 controller.

Andre Jute Fools rush in


The killer for all the e-bikes is riding style. Great if you're a wanna
be peleton rider, but very harsh on batteries if you joe-blow overage
plodder. Mid mounts allow different drive gearing ratios to have the
motor perform at optimum characteristics. I worked this out when they
first appear in the 80(?)s.


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