alistairolsen
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| posted on 8/1/09 at 11:02 PM |
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Lightweight Batteries
Im considering building an electric bike, and while the motors arent too expensive, the price of the power packs is prohibitive (£250)
Can anyone think of a locost way to achieve a compact lightweight 12v 36w or 48w power pack?
Anything thats standard fit somewhere, preferably Lithium Ion, but open to suggestions?
Cheers
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graememk
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| posted on 8/1/09 at 11:16 PM |
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laptop batterys from china
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alistairolsen
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| posted on 8/1/09 at 11:22 PM |
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a browse of ebay reveals:
11.1v
4700mah
322g
£35
Id need 16 of those, which isnt a problem at 5.2kg, but is a problem at £560
lol
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Guinness
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| posted on 9/1/09 at 12:22 AM |
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Have you seen "quitgas"?
He used normal car batteries, and is a bit of an inspiration for me. Just waiting for the right bike / golf buggy combo to come up!
http://uk.youtube.com/watch?v=Rzi4tL3QMWk
Mike
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alistairolsen
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| posted on 9/1/09 at 12:52 AM |
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Thats really cool!
By bike however i meant pushbike.You can get hub motors up to 1kw which could be entertaining, but I need some light batteries to give me 48v and a
reasonable range.
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snapper
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| posted on 9/1/09 at 01:40 AM |
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Disabled scooters, if your quick you can get them off whilst they use the loos in the supermarket
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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speedyxjs
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| posted on 9/1/09 at 08:06 AM |
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quote:
Originally posted by snapper
Disabled scooters, if your quick you can get them off whilst they use the loos in the supermarket
That should give you plenty of time 
How long can i resist the temptation to drop a V8 in?
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Mr Whippy
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| posted on 9/1/09 at 08:41 AM |
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looked into this myself, every expensive to do tbh. Instead I spent far less buying a good racing bike and now can easily keep up with cars in town
with little effort. Actually now looking at upgrading the brakes as it's a little too fast. Mountain bikes totally suck for road use.
Most ready to go electric bikes are dearer than a cheap second hand moped or small motorbike (usually about 1k) and considering the daft 120-140 mpg
and the fact that you are still on the road as you would be on a push bike, plus you have real lights/indicators and a proper helmet. I see little
point in an electric pushbike.
[Edited on 9/1/09 by Mr Whippy]
Fame is when your old car is plastered all over the internet
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alistairolsen
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| posted on 9/1/09 at 09:01 AM |
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quote:
Originally posted by Mr Whippy
looked into this myself, every expensive to do tbh. Instead I spent far less buying a good racing bike and now can easily keep up with cars in town
with little effort. Actually now looking at upgrading the brakes as it's a little too fast. Mountain bikes totally suck for road use.
Most ready to go electric bikes are dearer than a cheap second hand moped or small motorbike (usually about 1k) and considering the daft 120-140 mpg
and the fact that you are still on the road as you would be on a push bike, plus you have real lights/indicators and a proper helmet. I see little
point in an electric pushbike.
[Edited on 9/1/09 by Mr Whippy]
You need driving license for a moped or a scooter and you dont for an electric bike.....
I reckon you may be right tho, the expenditure required means it might be better just to buy a road bike!
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Mr Whippy
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| posted on 9/1/09 at 09:22 AM |
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just go for a CBT, lasts 2 years before you need to re-sit it, which takes half a day and cost £75. Ok so you have to have L-plates but still is way
less embarrassing than skin tight cycle shorts. Road tax £15, insurance £150. Much cheaper than a battery pushbike that might get you home.
[Edited on 9/1/09 by Mr Whippy]
Fame is when your old car is plastered all over the internet
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alistairolsen
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| posted on 9/1/09 at 09:32 AM |
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quote:
Originally posted by Mr Whippy
just go for a CBT, lasts 2 years before you need to re-sit it, which takes half a day and cost £75. Ok so you have to have L-plates but still is way
less embarrassing than skin tight cycle shorts. Road tax £15, insurance £150. Much cheaper than a battery pushbike that might get you home.
[Edited on 9/1/09 by Mr Whippy]
you still need to be allowed to have a license the gain a CBT. Come february her majesty may decide Im not allowed one for a while in which case Ill
be moving house and having a 5 mile commute.
Looking around, for 300 quid one can get something fairly decent in road bikes whic is sub 15kg, whereas anything electric is going to be 30 :O
Time to get fit 
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Mr Whippy
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| posted on 9/1/09 at 09:58 AM |
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quote:
Originally posted by alistairolsen
quote:
Originally posted by Mr Whippy
just go for a CBT, lasts 2 years before you need to re-sit it, which takes half a day and cost £75. Ok so you have to have L-plates but still is way
less embarrassing than skin tight cycle shorts. Road tax £15, insurance £150. Much cheaper than a battery pushbike that might get you home.
[Edited on 9/1/09 by Mr Whippy]
you still need to be allowed to have a license the gain a CBT. Come february her majesty may decide Im not allowed one for a while in which case Ill
be moving house and having a 5 mile commute.
Looking around, for 300 quid one can get something fairly decent in road bikes whic is sub 15kg, whereas anything electric is going to be 30 :O
Time to get fit
oops, hopefully you won't loose it for long.
Fame is when your old car is plastered all over the internet
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alistairolsen
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| posted on 9/1/09 at 10:48 AM |
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an unfortunate case of being in the wrong car at the wrong time!
Probably looking at 12 months, which is about how long it will take to finish the locost
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