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Old 04-22-17, 10:45 AM   #1
Dolores
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E-bike for a wonan 5.2" tall that could cope with hills

Hi,
I'm thinking to get an electric bike to commute daily to downtown. Its a 5.8 miles round trip wirh some very hilly parts. I want to expend about £1000. Anybody could advise me what can I get for that price that could cope well with hills including with a trailer attached on. I have a 1 year son and i would like to take him along. I visited local bike shops in Sheffield area but all seems very expensive at the moment you ask for a powerful motor. I also noticed that mostly are men e-bikes and seem too big for me. I rode before a 17" hybrid bike and i was ok. I saw an Oxygen s-cross St on sale for £1049 with the 13 Ah 36V battery and 17" frame, step through. Would that model suits for my height? I would appreciate any advise on the right model and size for me. Thanks
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Old 04-22-17, 07:51 PM   #2
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A 17" frame might too big for you but it depends so you need to ride it. For your budget, you might be better off converting a bike if you have one; you could get a decent powered motor kit for that amount. Since you are in England I'm afraid I can't make any suggestions = we do have plenty of 20" e bikes in the US and those would work great for you. Lower center of gravity, stronger wheels, more stable when you stop. For hills, you probably want at least a 500 watt motor if you have a trailer or kid on board. Again, I don't know what the laws are in your country about motor size/speed, etc. Hopefully someone from over there will chime in.
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Old 04-23-17, 12:47 AM   #3
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... I don't know what the laws are in your country about motor size/speed....
15.5mph and 250 watts in the UK. Within that boundary, for a hilly environment with cargo the strongest climber would be a mid-drive. IMO, a 250w hub would not do the job and would be a financial mistake. The least expensive approach would be to find a used standard bike that fits and is comfortable, then add a Bafang/8Fun mid system.
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Old 04-23-17, 08:41 AM   #4
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I think the UK probably has more ebike experts sitting around in a pub on any given afternoon than in my whole state, where I've only seen two e-bikes on the street. It's common to ride to work and e-bikes are popular. I'd suggest the pedelecs.co.uk/forum There's probably someone there that lives in the same area.



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Old 04-23-17, 09:22 AM   #5
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15.5mph and 250 watts in the UK. Within that boundary, for a hilly environment with cargo the strongest climber would be a mid-drive. IMO, a 250w hub would not do the job and would be a financial mistake. The least expensive approach would be to find a used standard bike that fits and is comfortable, then add a Bafang/8Fun mid system.
Oh, wow, I've had a 250 watt and it gets me up hills with a lot of pedaling but no way it would work on a cargo bike or one with trailer and kids. That's why I suggested 500w minimum but obviously that's not an option there. For the OP's budget, retrofit is likely the only option....would a mid-drive at 250w be strong enough??? Do they even make such small mid-drive systems? I know they only like pedelec in Europe, no throttle, but you'd think they would alllow larger drives on cargo bikes to encourage less auto use. Odd.
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Old 04-23-17, 02:17 PM   #6
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......would a mid-drive at 250w be strong enough??? Do they even make such small mid-drive systems?....
Can't comment on the other brands, but the 250w Shimano Steps mid with its 38t chainring eats hills with very little effort on my part, even when the bike is loaded. Same hills with the 250w geared hub would have me in granny gear, zig-zagging and sweating profusely. The power of a mid is surprising.

Some mid info https://tinyurl.com/lbejzrh
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Old 04-23-17, 10:15 PM   #7
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With a child to bring along, a cargo bike with a childs seat would be a great way to get around.

Sorry I cant name anyone in the UK to help you though.

-SP
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Old 04-24-17, 08:23 AM   #8
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Agree with the comments about mid-drive since your bike's gears are "multiplied"; the BBS01 conversion probably is the best fit for the UK. If you post on pedelecs and D8Veh answers, read carefully.
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Old 05-01-17, 03:41 AM   #9
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Thank you everybody for your advice. Yes, as many of you have said, here in UK only motors 250W are legal and permitted without needed of a driving license. When I went to enquiry about e-bikes at the local shops they also agreed that mid-drive systems where far much better than rear or front hub ones because the weight is more low centred and the bicycle become more efficient.
Finally I gave up the Oxygen because I realised that 17" frame was too big for me. Then I decided to invest a bit more to get a better motor and stronger bicycle to cope with the load. So my choice was a Kalkhoff Agattu i7 HS, a German made one with a 36V 17Ah battery for £1845. It comes with carrier, mudguards and lights. Therefore, all I need for city riding with a limit of 130Kg weight permitted including rider and luggage. It is also made to attach a trailer, although as you mentioned would be a hard work uphills. However, it is not a long distance what I need to cover uphill, so I think, even if it takes me longer, eventually I will get there at some point
I only tried without a cargo and yes, as you said, it is a pedelec, so you have to pedal to get the assistant. This model has a throttle option up to 6km/h that you can use for climbing hills.
I am still waiting for the child trailer because there was a delay with the provider. But I am very excited with this trailer (Thule Chariot Lite 1) because it can be used as a trailer and a stroller with the possibility to adapt it for jogging or even skiing!
I decided also to get a child seat for when I want to go lighter on short trips. At first I was so fixed to get a front child seat because they look more fun. However, after I tried the Thule Yepp Nexxt Mini I discovered that there was not enough room for me to get on and off the bike due to the small frame and that I am not very tall. For that reason I changed my mind and I ordered a Hamax Zenith that mounts on the rear rack.
I will post my impressions once I get everything set up.
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Old 05-01-17, 07:22 AM   #10
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Congratulations, for a newcomr your research really was effective; don't think you could have made a better choice, and you selected a premium brand with excellent warranty. Enjoy.
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Old 05-01-17, 08:25 AM   #11
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I agree with others, I wouldn't recommend a hub motor under 500w for hills and a cargo bike.

My direct drive hub is 500w/750w, and on some very steep hills it needs it all. Long moderate hills call for 450w. Almost all hills require pedaling or the bike will stall.

The plus side of hub motors if they will work for you is they're the ultimate in reliability, totally silent, and don't put any additional strain on the bikes drivetrain.
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Old 05-01-17, 08:41 AM   #12
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Glad you were able to up your budget and get something good you will enjoy.

Looking forward to hearing about your purchases.

-SP
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Old 05-07-17, 07:51 PM   #13
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Congratulations, for a newcomr your research really was effective; don't think you could have made a better choice, and you selected a premium brand with excellent warranty. Enjoy.
Thank you for your kind words 😊
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Old 05-07-17, 08:05 PM   #14
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Yes, you were right ghe 250w motor cannot cope with the hills in Sheffield with extra weight on it. I tried this weekend for the first time the bicycle with a rear child seat, my son and a wee basket I improvised to attach on one side of the rear rack because it wouldn't fit on my handlebar. Downhill to town was ok but the way back I had to get off and push it uphill because it didn't work. What i noticed with this motor is that only pushes you if you keep pedaling, but with a lot of weight is really hard and I was dying waiting for the push ��. The manual says you can activate the throttle and do not have to pedal, but I couldn't get to make it work. I have to read the instructions again and trying when I'm riding on my own.
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Old 05-07-17, 10:08 PM   #15
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Something seems amiss; with a mid-drive and the lowest gear you should have been able to ascend the hill IMO especially since it has the 6 mph "walking gear". Good luck elucidating the problem.
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Old 05-08-17, 12:04 PM   #16
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....I had to get off and push it uphill because it didn't work. What i noticed with this motor is that only pushes you if you keep pedaling, but with a lot of weight is really hard and I was dying waiting for the push ��...
To quote Court Rye’s review of Kalkhoff’s ‘Impulse’ PAS system, it is "designed for more active riding and required more effort when pedaling than some of the others"… and it "relies more on pedal torque so you have to engage and push actively to get the motor to help out”.

Your bike is on the heavy side, but the mid-motor is strong enough for it. The conflict I see is the bike’s gearing. The specs say that the Agattu i7 HSI has a Nexus-7 rear hub which does not have great ratios for hills. To make the bike a better climber, look into fitting a larger sprocket on the Nexus, or a smaller chainring up front.
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