A Cycling & bikes forum. CycleBanter.com

Go Back   Home » CycleBanter.com forum » Regional Cycling » Australia
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

electric assisted bikes??



 
 
Thread Tools Display Modes
  #1  
Old May 25th 08, 11:11 AM posted to aus.bicycle
Rex
external usenet poster
 
Posts: 26
Default electric assisted bikes??

Hello all,

Some questions on electric assistance.

My wife has never done much riding. She wants to ride the bikes downtown to
do our shopping (petrol saver). We tow a trailer which the child rides in.
The trailer add a lot of weight, which makes the uphill heavy going.

Wondering how the electric assist motors go? Anyone use one? Have seen the
Avanti Electra front wheel for sale - anyone use one or have any tips?

We really want electric assistance only - pretty much for when we use the
trailer. Want the bike to be easily rideable for fitness the rest of the
time.


Ads
  #2  
Old May 25th 08, 01:54 PM posted to aus.bicycle
terryc
external usenet poster
 
Posts: 137
Default electric assisted bikes??

On Sun, 25 May 2008 20:11:27 +1000, Rex wrote:


Wondering how the electric assist motors go?


AIUII, really great if you ride fas, aka 15km/h+. Not much help if you
don't and definitely a standard one would be of no use with a
weighted trailer going uphill.


We really want electric assistance only - pretty much for when we use
the trailer. Want the bike to be easily rideable for fitness the rest of
the time.


Have you considered improving the gearing by getting a triple with a low,
low range?

Kinda a bummer if home is back up the hill.

  #3  
Old May 25th 08, 10:14 PM posted to aus.bicycle
ray
external usenet poster
 
Posts: 113
Default electric assisted bikes??

Rex wrote:
Hello all,

Some questions on electric assistance.

My wife has never done much riding. She wants to ride the bikes downtown to
do our shopping (petrol saver). We tow a trailer which the child rides in.
The trailer add a lot of weight, which makes the uphill heavy going.

Wondering how the electric assist motors go? Anyone use one? Have seen the
Avanti Electra front wheel for sale - anyone use one or have any tips?

We really want electric assistance only - pretty much for when we use the
trailer. Want the bike to be easily rideable for fitness the rest of the
time.


I've ridden one recently. As a general rule, you get what you pay for.
The lighter lithium-ion units have better performance but cost more.
The lead-acid type I checked out could manage an unassisted 12 k/mh up
my hill, which is a 1 in 10 grade. With 30 kg of trailer and shopping on
board, however, you'd need every bit of power, both motor and pedal, you
could get.
Weight is certainly an issue, the EV weighs about as much as my touring
bike with a load on board. With the motor assist, this is no problem.
Without the motor it would vary from good work-out to impossible
depending on the gradient.
I enjoyed riding the EV, but I'm probably still about 10-15 years away
from the point where I'd actually want and/or need one.
Cheers,
Ray
  #4  
Old May 26th 08, 08:58 AM posted to aus.bicycle
Dave Hughes
external usenet poster
 
Posts: 228
Default electric assisted bikes??

On Sun, 25 May 2008 22:54:50 +1000, terryc wrote:

Have you considered improving the gearing by getting a triple with a low,
low range?


There is a limit to how slow you can go and maintain balance, and I'd
suspect that anyone who isn't a regular cyclist would find the balance at
low speed issue a bigger problem than those of us who trackstand because
we don't like clipping out at the lights.

22-34 is a very low gear, and is reasonably standard on mountain bikes.
Low end bikes may be more like 22-30, which is still pretty low. That's
already a gear where you need to spin reasonably well to make progress at
a rate where balance doesn't take more energy than pedalling.

--
Dave Hughes -
Random miscellany, as opposed to that other kind of miscellany
- Patrick Shaughnessy

  #5  
Old May 27th 08, 01:01 PM posted to aus.bicycle
Patrick Turner
external usenet poster
 
Posts: 407
Default electric assisted bikes??



ray wrote:

Rex wrote:
Hello all,

Some questions on electric assistance.

My wife has never done much riding. She wants to ride the bikes downtown to
do our shopping (petrol saver). We tow a trailer which the child rides in.
The trailer add a lot of weight, which makes the uphill heavy going.

Wondering how the electric assist motors go? Anyone use one? Have seen the
Avanti Electra front wheel for sale - anyone use one or have any tips?

We really want electric assistance only - pretty much for when we use the
trailer. Want the bike to be easily rideable for fitness the rest of the
time.


I've ridden one recently. As a general rule, you get what you pay for.
The lighter lithium-ion units have better performance but cost more.
The lead-acid type I checked out could manage an unassisted 12 k/mh up
my hill, which is a 1 in 10 grade.


Gees, 1 in 10 is a steep hill, and you get 12kph?

If your weight and bike weight = 90kG, the power is about 200 watts.


With 30 kg of trailer and shopping on
board, however, you'd need every bit of power, both motor and pedal, you
could get.
Weight is certainly an issue, the EV weighs about as much as my touring
bike with a load on board. With the motor assist, this is no problem.
Without the motor it would vary from good work-out to impossible
depending on the gradient.
I enjoyed riding the EV, but I'm probably still about 10-15 years away
from the point where I'd actually want and/or need one.
Cheers,
Ray


But if you yourself produced 150 watts, you'd have 350 watts at your
disposal,
and that's enough to go dangerously fast and keep up
with the local senior clubmen on sunday "recovery rides" as they like to
call them.

I reckon you might get spotted trying to lead the bunch.....

Patrick Turner.
  #6  
Old May 28th 08, 01:07 AM posted to aus.bicycle
[email protected]
external usenet poster
 
Posts: 3
Default electric assisted bikes??

On May 25, 8:11*pm, "Rex" wrote:,

snip for brevity

Wondering how the electric assist motors go? Anyone use one? Have seen the
Avanti Electra front wheel for sale - anyone use one or have any tips?

We really want electric assistance only - pretty much for when we use the
trailer. Want the bike to be easily rideable for fitness the rest of the
time.


Bought a secondhand one on ebay a while ago. Aluminium frame but heavy
NIMH batteries which you can remove. No twist grip. Power steering on
the pedals if you see what I mean. Can turn the electric stuff on
while you're riding if you see a hill coming up..

Very pleased with it.
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tour de Presteigne a rally for power assisted (electric) bikes Paul Murphy UK 0 May 9th 08 07:05 AM
electric bikes Pete UK 159 June 6th 06 10:02 AM
electric bikes Johnnie Scott UK 7 July 6th 05 11:57 AM
Electric Bikes Brian Jones UK 10 June 27th 05 12:07 AM
Electric Bikes. BringYouToLife Social Issues 11 November 2nd 04 08:11 PM


All times are GMT +1. The time now is 08:49 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.
Copyright 2004-2023 CycleBanter.com.
The comments are property of their posters.