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Old July 22nd 03, 06:13 PM
Lee Blaver
 
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Default Upgrading childs electric bike

Alan Campbell wrote:
My son has an electric quad bike that he has had for about a year now.
He is very confident on it now and is complaining that it doesnt go
fast enough ! I was wondering if there is anything that I can do about
this ?



Is it practical to change the gearing of the motor?
You'd lose some acceleration though...

Lee
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Old July 22nd 03, 06:44 PM
Bob Eager
 
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Default Upgrading childs electric bike

On Tue, 22 Jul 2003 17:13:55 UTC, Lee Blaver
wrote:

Alan Campbell wrote:
My son has an electric quad bike that he has had for about a year now.
He is very confident on it now and is complaining that it doesnt go
fast enough ! I was wondering if there is anything that I can do about
this ?



Is it practical to change the gearing of the motor?
You'd lose some acceleration though...


Also, worry about whether the braking is up to it.

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P70, PC/AT..

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Old July 23rd 03, 11:02 AM
The Natural Philosopher
 
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Default Upgrading childs electric bike

Alan Campbell wrote:

My son has an electric quad bike that he has had for about a year now.
He is very confident on it now and is complaining that it doesnt go
fast enough ! I was wondering if there is anything that I can do about
this ?

It has a 6v 7.2Ah battery fitted. I have checked the motor, but
cannot see anything that tells me what rating it is. Could I upgrade
the battery ? what is the best way to go ? upping the volts of the
Ah. Maplins sell 12v 7Ah and 6v 10Ah batteries that would fit the
space, or should I just foget the idea ?



You may be embarking on something you didn't anticipate if you start
tinkering.

Power goes up roughly as the squaee of the applied voltage, so doubling
the volts will net you 4 times the power and proably let the magic smoke
out of the motor :-)

If you REALLY want to have a go, use a starter motor and a 75A/h car
battery :-)

Battery lasts about 5 minutes between charges, and the motor will be
shot in an hour, but in between its - quite fun Those motors are a few
hp

re-motoring is probably your best bet, or rewinding the one you have.

Something out of a cordless power tool might be a place to start.



TIA

Alan



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Old July 23rd 03, 02:01 PM
Eric Dockum
 
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Default Upgrading childs electric bike

The Natural Philosopher wrote in message ...
Alan Campbell wrote:

My son has an electric quad bike that he has had for about a year now.
He is very confident on it now and is complaining that it doesnt go
fast enough ! I was wondering if there is anything that I can do about
this ?

It has a 6v 7.2Ah battery fitted. I have checked the motor, but
cannot see anything that tells me what rating it is. Could I upgrade
the battery ? what is the best way to go ? upping the volts of the
Ah. Maplins sell 12v 7Ah and 6v 10Ah batteries that would fit the
space, or should I just foget the idea ?



You may be embarking on something you didn't anticipate if you start
tinkering.

Power goes up roughly as the squaee of the applied voltage, so doubling
the volts will net you 4 times the power and proably let the magic smoke
out of the motor :-)

If you REALLY want to have a go, use a starter motor and a 75A/h car
battery :-)

Battery lasts about 5 minutes between charges, and the motor will be
shot in an hour, but in between its - quite fun Those motors are a few
hp

re-motoring is probably your best bet, or rewinding the one you have.

Something out of a cordless power tool might be a place to start.



TIA

Alan


With a conntional pushbike I have done a car battery + starter motor
running on the outside of the back wheel. Switched by the solenoid
switch from an old mini (with a manual push switch between the
terminals) Very exciting, however a bit heavy to push up hill when
the battery goes flat. Also a bit light on the front wheel - can do a
literally electrifying wheelie!


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Old July 23rd 03, 02:11 PM
IMM
 
Posts: n/a
Default Upgrading childs electric bike


"Alan Campbell" wrote in message
om...
My son has an electric quad bike that he has had for about a year now.
He is very confident on it now and is complaining that it doesnt go
fast enough ! I was wondering if there is anything that I can do about
this ?

It has a 6v 7.2Ah battery fitted. I have checked the motor, but
cannot see anything that tells me what rating it is. Could I upgrade
the battery ? what is the best way to go ? upping the volts of the
Ah. Maplins sell 12v 7Ah and 6v 10Ah batteries that would fit the
space, or should I just foget the idea ?


What is the law on these electric scooters and quads that have kids riding
them dangerously all over the place, on and off pavements? Some the
children look too young to drive a motorised vehicle.


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Old July 23rd 03, 08:16 PM
Nick Finnigan
 
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Default Upgrading childs electric bike

"IMM" wrote in message
...

What is the law on these electric scooters and quads that have kids riding
them dangerously all over the place, on and off pavements? Some the
children look too young to drive a motorised vehicle.


http://www.hmso.gov.uk/acts/acts1988...80052_en_1.htm


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Old July 23rd 03, 09:25 PM
al
 
Posts: n/a
Default Upgrading childs electric bike

"Nick Finnigan" wrote in message
...
"IMM" wrote in message
...

What is the law on these electric scooters and quads that have kids

riding
them dangerously all over the place, on and off pavements? Some the
children look too young to drive a motorised vehicle.


http://www.hmso.gov.uk/acts/acts1988...80052_en_1.htm


That only seems to mention powered pedal cycles, not those little electric
cars & quads ..?



a


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Old July 23rd 03, 10:24 PM
Nick Finnigan
 
Posts: n/a
Default Upgrading childs electric bike

"al" wrote in message
...
"Nick Finnigan" wrote in message
...
"IMM" wrote in message
...

What is the law on these electric scooters and quads that have kids

riding
them dangerously all over the place, on and off pavements? Some the
children look too young to drive a motorised vehicle.


http://www.hmso.gov.uk/acts/acts1988...80052_en_1.htm


That only seems to mention powered pedal cycles,


and lawn mowers, and motor vehicles.

not those little electric cars & quads ..?


they must be motor vehicles then.


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Old July 24th 03, 12:55 AM
IMM
 
Posts: n/a
Default Upgrading childs electric bike


"The Natural Philosopher" wrote in message
...
IMM wrote:

"Alan Campbell" wrote in message
om...

My son has an electric quad bike that he has had for about a year now.
He is very confident on it now and is complaining that it doesnt go
fast enough ! I was wondering if there is anything that I can do about
this ?

It has a 6v 7.2Ah battery fitted. I have checked the motor, but
cannot see anything that tells me what rating it is. Could I upgrade
the battery ? what is the best way to go ? upping the volts of the
Ah. Maplins sell 12v 7Ah and 6v 10Ah batteries that would fit the
space, or should I just foget the idea ?


What is the law on these electric scooters and quads that have kids

riding
them dangerously all over the place, on and off pavements? Some the
children look too young to drive a motorised vehicle.


**** off,you sad little ******.


I think we have one here.


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Checked by AVG anti-virus system (http://www.grisoft.com).
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