Dali

Ultimately yes, but it is all down to ride style/preference as one of your bikes could conceivably have more energy left in the battery at the end of the ride, meaning more energy had to be expended by that rider to compensate due to one system or set-up preference.

I see what you are saying. Speed controlled whilst engaged gives you more power than a low level set current control, but I ride most of the time above the cut off speed point for the motor so over a several mile ride it is debateable who has expended the most energy. My wife's kit is a Woosh rear 48v kit DWG22C and I think level 1 on the standard King Meter KM529 is set too high for such a powerful motor. I haven't tried it myself as the bike is too small for me but this is what she reports. Once I realized my mistake with an earlier post (A KT looked like A KIT on my phone without glasses), I see that KT can do both so if building from scratch that is definitely the way to go. Pity a lot of complete kits don't offer KT, if only as an option.

KM529 - I assume it is current controlled as my wife says it never switches off, but it could be that she isn't reaching the set speed of level 1 as she has a muscle condition. I will have to find out.

That's good, shame the King Meter can't.

In case any prospective buyers reading this think they should avoid Lishui/speed controlled as everybody ends up wanting to change them for KT/current controlled anyway, they don't; at least I don't. My wife has current controlled and mine is speed controlled. I am very happy with my Lishui as the motor assists me to a comfortable speed then switches off, meaning I get some exercise and save on battery. If it becomes a bit tougher (hill) or I weaken then it causes me to slow down and the motor kicks in again. No fiddling or loss of concentration on the road and my hands never leave the grips. Great. My wife finds having a current controlled means that power is always applied at any speed, even when you don't want it (on a flat or slight down gradient but not enough to coast for example). She finds she has to fiddle with the gears to make it harder to get some exercise even on setting 1 or fiddle with the display (there is no setting 0 on the King Meter, which even if it did would still count as fiddling, so switching off is the only solution for her which means she loses the useful throttle access when required, or I could insert a switch breaking the +5v on the pedal sensor to mimic setting 0 - faff and and still requires constant attention during a ride). So I personally would recommend the fit and forget Lishui over KT and I have no plans to switch out my controller and display.

Yours sounds like a much nicer way.

Sorry for my ignorance, C2C? I'm interested too, keep us informed.

Maybe like me you overpedal a bit so the motor switches off when it reaches the designated speed, that would make the battery last a long time. Poeple seem to prefer the KT type but the speed controlled Lishui really suits me and I am very impressed with the kit I have to say. Interesting you mention the drag illusion - I understood it would happen on the hills so there was never any 'illusion' there for me, but it did happen on the flat a couple of times and I thought there was real drag going on, but it turned out the road it happened on was a slight incline that only looked flat so fooled my poor brain!

It is such an easy mistake that you would think Yose would warn about it, but when I cancelled the replacement hub they were going to send me they seemed not to be aware of the possible problem. I haven't noticed a large jump between 2 and 3 I must admit (they are also the main ones I use).

Gtec electric bike is only 16kg, I think. There are others. I asked my wife, addressing her concerns at the time after coming off the phone with a local bike shop, "Did they have stock of any of the models you were after?" "No." "Do they sell kits?" "No." But they wanted to sell you something they did have stock of - pre-built bikes for £1500 up?" "Yes. I take your point but he wasn't like that, he was very nice." "All salesmen are, before a sale.". I am glad to get confirmation here and she feels much better now reading this thread.

Yes, that's what I thought and told my wife. Thanks both.

Hi, I have had awful trouble getting hold of a suitable bike during Covid with my wife's very narrow requirements and it just seems to get worse the more I look into it. My wife found stock of the Dawes Mojave low step (but we have been here before and still have no bike - finally tried to buy a Woosh Big Bear or Santana 3 as we have been let down on bikes so many times, but they have stopped selling the former and the latter are delayed until mid Feb). But my wife has been warned a few times by bike shops that E kits are a bad idea as the frames just cannot take it. They are unimpressed with my wife's mention of torque arms and said they have seen it go wrong many times with stress fatigue setting in. Anybody else worry about this? My idea is to pair the Woosh rear kit below when available (reluctantly decided against the Xiongda) with Dawes Mojave 700c 17" frame and 135mm rear dropout: DWG22C-48V 3.9kgs 160mm cassette 60NM I understand it will invalidate warranty on a new bike, but they still warn off doing it. The Mojave is aluminium frame but I worry about quality of components if going for the cheaper steel frame versions (Dawes Windermere). The rear 350w Yose kit I fitted to my Merida 40D seems okay so far, but not ridden it a great deal yet and of course nowhere near the torque of the Woosh. It has a steel insert in the chain side rear dropout so have not fitted a torque arm (but I think I will on the other side very soon).

When I asked Yose for the RPM (rear 350w) I received this reply: "Hello, the motor for 700C has RPM 230-250."

That's great and a non impact form of exercise. Hope you go with him sometimes.

Blimey, that is impressive. And thousands of miles use would take Lisa to the year 2098 so can't say fairer than that.

Thanks for that info. Shame about the Xiongda. Good to know about the Woosh. What was the kit like on hills before you changed some of the items out (my wife won't go over 15mph)?

I appreciate the warning, but this is why tradesmen can write their own cheques as people don't try/learn anything these days (I do not mean you btw). I know people who pay electricians to put a plug on (and a good job too probably). First time I stripped an engine it seemed like a black art, so I sat down with a Haynes manual and taught myself. Some things require specialist knowledge of course so shouldn't be attempted, like ironing. And diminish fixing a buckle all you like, but it is harder than you think and I still say that this is exactly the kind of skill required. I used to make 50p - £1 a wheel as a kid, back when it was a new invention , and is harder than 'tightening a spoke' which is why I was able to buy a new bike with the proceeds.

Thanks for the heads up as I don't want to do anything a motor isn't designed for.

Excellent, thank you. I looked at the AKM128SX and it is 350W and my wife won't stray from 250W written on the motor, so still looking like the Woosh SWX02 48v kit is coming out best. Although I can't seem to leave that 2 speed one you mentioned off the list and will look on those sites for that too.

Thanks vfr. I was just making sure components were capable, not necessarily going up that high but likewise never gave a thought to stripping gears. I will look at your suggestion. MontyPAS - I don't have a problem building a wheel if there is a big benefit to it (unless it is more complicated than it seems with hidden dangers) as have replaced broken spokes and fixed many a buckle in my youth, but actually I just put that up there for the spec's and was going to see if it is sold anywhere as a wheel.

Just looking at options as this is a big purchase for me and I want to get it right. Does anyone have views on this Akeima 100sx, please, as it seems a pretty beefy torque at 50Nm for only 2.1 kg for the 250w model (doesn't mention RPM so would have to find out - it would be easier lifting the bike onto the roof of the car!)? https://www.aikema.com.cn/en/product/rear-hub-motor-conversation-kit-ebike-drive-unit.html and I would pair it with these perhaps: https://smile.amazon.co.uk/gp/product/B07MNN85ZX/ref=ox_sc_saved_title_4?smid=A6XQPVRXUZ1KA&psc=1 https://www.ebay.co.uk/itm/48V-13AH-Li-ion-E-Bike-Battery-Electric-Bicycle-Power-Pack-1000W-With-Charging/264826236621?_trkparms=aid=555021&algo=PL.SIMRVI&ao=1&asc=20190711100440&meid=e0803e6f3b15432e8ca5dbf2817eab71&pid=100752&rk=5&rkt=18&mehot=co&sd=353200725334&itm=264826236621&pmt=1&noa=0&pg=2047675&algv=SimplRVIAMLv5WebWithPLRVIOnTopCombiner&_trksid=p2047675.c100752.m1982 I looked at the battery above as it allowed fast discharge, although I have to see what the frame can take when the bike arrives as I don't want to negate the step through aspect as that is a must. I didn't want to rear rack mount the battery especially with the 4kg Woosh hub, but it wouldn't be so bad with the hub above. Thank you for your patience with me.

Welcome. going electric is a very liberating assist on hills as it gets you out there when otherwise you might not be able to face it

Thank you, it's going to be very liberating for my wife and can't wait.

My wife won't go for a 20" wheel and that's a shame as it would have been an easy and cheap solution. I like the idea of the Xiongda 2-speed motor and can't believe they aren't taking over, but they are only from China that I can find (by that I mean no EU warehouse) and don't say 250w, which seems to be a must for my wife. And as you say, Nealh, Woosh do so that is their biggest selling point for me. I would also have to build the Xiongda into my wife's wheel. I can't see this is particularly difficult as I have fixed buckles on steel wheels before, but it is extra hassle and something else to go wrong. 70Nm, though! But the 48v SWX02 will be going into a 26" so will be plenty I hope. Bike comes Tuesday and I will pre-order from Woosh after that after confirming the kit will fit. (Unless another brainwave hits!) Woosh, do you happen to know the rpm of the SWX02, please?

Absolutely right, as ever. Glad to see that original 09 error gone and interesting about the error 25 - I am learning all the time. Thanks once again. Now, if you can tackle the rain next...