Hiya folks, lightweight ebike options

Canavaris

Just Joined
Aug 14, 2016
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Sorry, not sure if you need War and Peace but anyway skip to the end if you like...

Tried a mate's ebike recently - a £2500 cube 20+kg, around Kinver Edge, South Staffs (if anyone knows it) and totally blown away but I won't bore you except to say it opens up a new, bigger world.

I used to commute about 10 miles to work each way which included one bloody big hill around half way and I would see the mamil's racing off while I was a huffing and a puffing! Usually pushed the last bit (lowest gears are not what they were) and spent 10 minutes before going into the office cooling down. This was on a Boardman Hybrid Pro at around 10kg (not including work stuff and sandwiches).

I have now moved jobs and can only commute by train so cycling time is limited - the missus is never going on a bike again (even longer story) and I agree with her that a motorbike is not what I really want to return to from my youth (costs, upkeep, pollution, not really needed/practical for our lifestyle. Yes we are veggie tree huggers).

So, thanks for staying with me.

Aged mid 40s, 5'10 and 11.5 stone, office worker and my knee is a little dodgy but able to peddle for a fair whack, the Boardman will be kept for short sojourns, can pay a bit more if required for an ebike. My experience with normal bikes proves that quality matters, such as pick a budget and then double it! Then it comes down to price to component ratio.

I live in a flat and with one flight of stairs and the walls are showing serious tyre marks and weight (along with looks) is my priority. When I had a 15kg Carrera it soon becomes a pain to keep lugging the thing up and down especially with panniers/shopping/ work stuff (beer) - you know what I mean.

I mainly want to get some distance, up to 30 or 40 miles out and climb some hills but am able to work my legs as well. Coming from the Black Country I know what hills look and feel like but my best memories on any type of bike are reaching the top of anywhere and surveying the surroundings.

When I said earlier looks are important I think the Pinnacle Lithium Ion from Evans in Brum is perfect but the weight is a big issue. 18 kg is a bit of a lump to get up n down the stairs so the gtech may be okay at a push for now but battery life is an issue (try going up to the reservoir in Netherton, my motorbike couldn't make it years ago!).

The Woosh Karoo looks a doozy but 19kg is a non starter. I think I am looking for lightning in a bottle and may need to wait for technology to advance over the next ten years but thought I would put this out there anyway.

Well done if you have got this far, thank you.

Right then tl;dr

Lightweight as poss, reliable components, no suspension, able to go up and down big hills, good battery life, good after sales support for electronics/electrics.

And. And. Look good - this is very important. Along with lightness.

Mtia, cheers.
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
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18 - 20 kg is about the lightest it gets for a bike capable of 40 miles.
 
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Angelnorth

Pedelecer
May 13, 2016
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Hexham, Northumberland
I don''t think battery life is the only problem with the GTech from your list of requirements - it's a single gear bike and I wouldn't fancy that to go up "big hills".

Is there any other way you can solve the weight issue? As in, do you absolutely have to take the bike up to your flat or could you find another storage solution somehow?
 

soundwave

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May 23, 2015
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9.9kg 200w motor but will need 2 bats as only 9a
 

soundwave

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May 23, 2015
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whats the budget? 9.9kg is as about as light it will get tbh
 

Nealh

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Aug 7, 2014
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Vivax is the stealthiest system out and can't be seen even the battery can be concealed in a bottle or saddle bag but the rider would need to generally be a fit keen cyclist and not a cheap option but will appeal to some.
 

RobF

Esteemed Pedelecer
Sep 22, 2012
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Will try again in 5 to 10 years.
I admire your patience, but bear in mind batteries were big and heavy when they were invented.

Fast forward 200+ years and, yes, you've guessed it, batteries are still relatively big and heavy.

Motors with decent power are more compact than they used to be, but still heavy.

No one can know what will happen in future, but five or even 10 years is a relative blink of an eye so it's likely 2026 model year ebikes will still weigh close to 20kg.
 
D

Deleted member 4366

Guest
You can make a very light e-bike if you do it yourself. Buy a used road/cyclecross bike, preferably with 9-speed gears and disc brakes. Replace the handlebars with straight ones, and if it has disc brakes get a pair of used hydraulic brakes, like Shimano LX ST-M585. That's the bike sorted. Should be around 10kg.

Add a Q100CST motor wheel (2.2kg) and a downtube battery with integrated controller (3kg), and the finished bike would be about 16kg. You'd have the choice at what speed to run it. The 201 rpm 36v version with a 48v battery will give a comfortable 22 mph, or the same version at 36v would give about 18 mph. You can set/restrict the speed to whatever you want in the LCD. The kit would be about £450 - £500 and the bike maybe £200 - £400

https://bmsbattery.com/ebike-kit/617-q100c-cst-36v350w-rear-driving-e-bike-motor-wheel-ebike-kit.html#/213-rpm-201

https://bmsbattery.com/ebike-battery/784-48v116ah-case-08-bottle-panasonic-battery-pack-battery.html#/26-ac_voltage-90132vac

https://bmsbattery.com/ebike-battery/567-36v10ah-bottle-ebike-battery-power-bank-battery.html

http://www.ebay.co.uk/itm/Revolution-Cross-Pro-Disc-2013-52cm-Cyclocross-Bike-/152198704078?hash=item236fbfebce:g:C~gAAOSwIgNXqOda
 

trex

Esteemed Pedelecer
May 15, 2011
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my Giant Defy weighs in just under 17kgs with 15AH battery.
It has the same electrics as the woosh Karoo.



the Karoo is only slightly heavier because of chainguard, mudguards and rack.
 

anotherkiwi

Esteemed Pedelecer
Jan 26, 2015
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There, above, you have the two options:

DIY

or

e-bike + lightweight = money3 <- cubed (damned BB Code don't have sup text)
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
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The way I see it is that some folk think that they can get an assited bike for cheaper and less weight then a conventional pedal bike. Where they think the battery and motor weight is going to disappear to I don't know, let alone the cost of the said parts.
 

nemesis

Esteemed Pedelecer
Mar 14, 2011
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I have the 2016 Cube C-62 carbon hybrid with the Bosch CX motor and 500wh battery.The weight is now down to 17.5 kg with kojak slick tyres,carbon seatpost and bars and stem.
With the speed limit taken off it will cruise at 28mph on the flat and top out at 38mph with the present gearing and that is not downhill.I never run it in turbo mode as it has enough power in the next one down sport mode.
A great e-bike and i have owned quite a few since 2011 when i went electric.
 

Yamdude

Esteemed Pedelecer
Sep 20, 2013
842
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Somerset
Pointless you lot posting on here... OP said he wont be back till 5 to 10 years time.
By that time we'll have perfected a miniature fusion reactor for power, fitted to a bike frame made from the finest Unobtanium.
Its an exciting future.
 
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soundwave

Esteemed Pedelecer
May 23, 2015
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i hope you got some sort of frame protectors as going that fast stones are like bullets pinging off my frame and legs.
 

Canavaris

Just Joined
Aug 14, 2016
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Stourbridge
Thank you folks.

Yes I will be checking back at kudos regularly as well.

Reckon it won't take long for the tech gap to decrease as these things are the future with the modern world being what it is.

Love those bikes Dave and when I first saw them I thought that was it but I always look at the weight second. Maybe the 2020 model?

Cheers all, see you in 2020 (ish).