Conhismotor electric bike review

[cwah]

Hello there,

The bike finally arrived.

I was so excited today. Received it at work and assembled it directly in 40 mn
They think I'm crazy about bike but that's fine

Bike total cost: £700 including shipping charge and additional accessories.
eBay - The UK's Online Marketplace

I didn't pay any taxe!! yeeepeeee


I did a ride from work to home, around 3 km. And it's not as slow as expected:
- Average speed: 17km/h. But this is because of the red light and car everywhere.
- Max speed: 35km/h. I'm really pleased with the speed the bike can reach. Most of the time I'm around 27 km/h. Which is REALLY GREAT!

Just have a small concern regarding the speed:
- From 27km/h I peddle in the air. It's almost like I'm not peddling at all
- I'm not faster than the road bike in London. (But that's fine) These guy are clearly fast and can reach easily 30 km/h

I've noticed I didn't have a 24V10AH Lifepo4 battery as advertised, I have a 36V10AH Li(NiCoMn)O2 battery. It has a shorter lifecycle and I may have to change the battery very soon? Is this battery better than Lifepo4 or not? (I understood it has a higher energy density)


Other big problem, it doesn't fold well. I can't see how I can carry it folded on the train or bus. I'll try to see what I can do but I don't expect any miracle.


My score for now:
Comfort: 3/5
Speed: 4/5
Multi-modal navigation: 1/5

Global score: 3.9/5. I'm still very satisfied because it's like the day and the night compared to my old 13km/h bike


Going to continue my ride and I'll keep you in touch.

 

[oigoi]

Thanks for your review it sounds like an interesting bike with a good turn of speed. You are pedalling air above 27km/h because your gearing is not high enough.
To change this you would need to either increase the size of the chainwheel on the front for one that has more teeth on it or reduce the size of the sprocket at the rear so that the smallest sprocket has less teeth on it.
Be interesting to hear how you are doing when you have covered a few miles and tried some hills etc

 

[Fordulike]

Glad you like the bike mate.

It's a shame that so many of the original negative comments, came about coz we thought that it only had a 24v battery

 

[cwah]

Thanks for your advise Oigoi. I'll look for a way to change the front chainwheel. But actually I have many more problems to fix. I'm going to ask the seller but I've to wait until the end of the weekend.
- I don't know how to adjust the front and back suspension (it's maybe not possible to adjust)
- I can't adjust the handlebar height (it's maybe locked)
- And I seriously have to find a way to make it roll correctly once folded.

And lastly, I don't know if it's a good thing or not to have a 36V10AH Li(NiCoMn)O2 battery. Best of class seems to be Lifepo4..


And now I need a good insurance!


ps: Fordulike, at least you warned me. But for a 250W motor it's really good. And didn't had any problems with any small hills in london

 

[flecc]

The lithium manganese compound cathode battery you have is the latest technology of a very well established type. It does have a higher energy density and is generally better at delivering high currents than the lithium iron phosphate (LiFePO4) type, but it does have a shorter life. Most claim up to 800 charge cycles for it, while LiFePO4 life can be from a little over that to a lot more if gently used. The fact that they've changed from LiFePO4 may indicate that battery type didn't measure up well on that bike, not uncommon.

 

[cwah]

Thanks for your explaination Flecc. I suppose for my case, Li(NiCoMn)O2 was the most adapted.

I'm continuing the tests, after 15km I've lost 1 charger bar (but I peddle). I suppose it's quite good. On throttle only I can reach 32km/h. When I peddle to the max I reach 35km/h. That's completely fine for me

By the way, does anyone know if buying this chainwheel would be better for the bike?
ROAD BIKE DOUBLE BLACK 52/42 CHAINSET

Also I'm thinking about another seat:
Do you think this one is good?

 

[Deleted member 4366]

By the way, does anyone know if buying this chainwheel would be better for the bike?
ROAD BIKE DOUBLE BLACK 52/42 CHAINSET

Also I'm thinking about another seat:
Do you think this one is good?

I fitted something like that on two of my electric bikes. Mine were both 52/39 teeth. The problem you can get is that the larger chainwheel touches the chainstay, so have a look at yours and check that the chainstay isn't curved around the chain-wheel. You can get round it by using a longer BB spindle to move the chainwheel out slightly, but you don't want to go too far or your gears won't line up properly. I use both chainwheels without a front deraileur. When I know I'm going to go up a very steep long hill, I just hook the chain over with a twig, and then hook it back when I'm ready. the 52 tooth chainwheel is about right for normal riding (no steep hills) and I can pedal up to about 30mph..

 

[cwah]

Thanks for your answer.

I also purchased a crank removal tool:
ICETOOLZ Crank Extractor

Today got a problem with the peddle: I think it wasn't fixed well enough and now the crank arm worn out at pedal connection:

I've been to Evan cycle and they said I've to change the complete chainset because it's located on the right.. So anyway I've to change it. Just hoppe I won't have any problem with the pedelec sensor when I'll change it.

 

[Deleted member 4366]

Now you can make an opportunity out of a crisis by fitting that bigger chain-wheel.. Remember that it's a left-hand thread for the pedal on the other side. You shouldn't have to move the pedal sensor unless you have to get a longer BB set. If your bigger chain-wheel touches the chain-stay, you can get a sealed bearing type BB assembly from Halfords for about £10. Just take the old one down and get one a bit longer and ask them if you'd be able to change it for a longer one if it's not long enough.

 

[cwah]

Thanks for the answer d8veh. I going to purchase all the required tools and see how things could work together.

Do you mind to provide a link or picture of the sealed bearing type BB? I don't really know what is that thing.

 

[Deleted member 4366]

Thanks for the answer d8veh. I going to purchase all the required tools and see how things could work together.

Do you mind to provide a link or picture of the sealed bearing type BB? I don't really know what is that thing.

It's the bit with the square shafts that the cranks fit to.
RPM SEALED CARTRIDGE BOTTOM BRACKET 110.5, 115, 118 MM 110.5mm | eBay
You need the special tool to remove it, although some of the cheaper non-sealed bearing types can be removed with a large adjustable spanner, as they don't have these internal teeth. You have to look and see what type you have. The two types are inter-changeable. These also have a left-hand thread on the chain-wheel side.
Cyclo Bottom Bracket Tool - Shimano Type Fitting | eBay

 

[cwah]

Thanks for this detailed explanation. I'm learning everyday new things on bike now thanks to you and others in this forum

 

[cwah]

Hey guys,

I just tried to see how much I can do with my bike, here are the stats:
Max distance: 18 miles total distance on throttle only (mainly flat road but a bit windy)
Max speed: 23mph (but once I had a very strong slope in a tunnel and I managed to go to 29mph!!! Yeeeey!)
Average: 14 mph. (but most of the time I'm between 15 and 23 mph)
Battery: 36V10A Li(NiCoMn)O2

Is it good efficiency?