VAE experience, practical electric bicycle with trailer

[Christophe]

Some pictures taken yesterday details of wear VAE 18 months after (not no daily use frequently, 2 3 to once a week in summer and spring, most of the time to go post a parcel to the Belgian Post, about 14 km one way)

General condition (with 2 Belgian parcels):



Brake wear / rim on the rub (yes there is braking)





derailleur:



Back of the battery:



Top view:



For comparison, the trailer wheels in a not top condition ... (quality metal 2 carément is not the same ...)




... And VAE:



In short it is rather very positive for the VAE.

If there are other details you want to see or know, tell me and I execute!

[I Citro]

Some details of wear VAE [/ b] after 18 months (not daily use not often, 2 3 to once a week in summer and spring,
In short it is rather very positive for the VAE.

If there are other details you want to see or know, tell me and I execute!

The bicycle wheels appear to be double-walled

Will he play in the bearings (steering, pedals, wheels) and the folding joints of the frame and handlebars.
The rays are they stretched property and they sound similarly.

[Christophe]

No play in the bearings but the handlebars "squeak" at the level of its articulation, yet I have only bent it twice since we got the bike ...

For other joints, ca seems impeccable.

I vériferai at the next exit rays ie this AM.

[Christophe]

Test ray: RAS it sounds so granted

I have just made a first test of consumption "taken from the battery" with an EM230: https://www.econologie.com/shop/compteur ... p-299.html

Charger consumption is between 57W 64.5 and W, the load is done 2 times: strong current at the beginning and lower at the end. 60W corresponds to the current strong start charging. Test temperature: 21 ° C



Charger consumption after the end of the charge 4.5 W (the day before if you want) and total kWh consumed:


The power factor of the charger is "dirty":


I do not know how long the charge lasted (I have not monitored in detail), it was over after 6h and 3h ca charged yet.

Results:

a) 0.25 192 kWh consumed for Wh (theoretical) stored or where a 0.192 kWh performance load on the energy of about 0.192 / 0.25 76.8% =

a1) This is quite consistent with the results estimated on the subject: https://www.econologie.com/forums/recharge-s ... t7990.html

At the time I had measured consumption 75W for charger + inverter. We can deduce that the UPS had a clean consumption of about 75 - 60 15 = W.

It therefore leaves (1st phase of recharging a LiIon battery = high amperage) 1.8 A at 29.4 V = 53W "in" the battery.

The inverter + charger yield is thus 53 / 75 70 =% which is very respectable because there 2 transformer in series and that goes through the 230V AC (root = 0.7 an average by transformer 84%)!

On the other hand performance charger to the instantaneous power would 53 / 60 88% = which is more than the energy ... the difference probably comes from internal battery losses (and the fact that we do not know precisely the actual capacity of the battery).

b) Consumption of taking to the wheel on 35 km range of 0.25 / 35 = 0.007 kWh / km is 0.7 100 km kWh, about 26 times less than the electric 106 Citro (But must also pedaling ...)

A flat point to the decline of autonomy announced earlier there 2 or 3 days: it seems that the gauge 5 leds down faster but the last 2 leds take much longer to come down than others, especially the last. I found this yesterday wanting to unload as much as possible before the battery load test. So not on the genuine autonomy has declined.

This reopens the debate we talked récement's ability to accurately measure the remaining energy in a battery ... see here: https://www.econologie.com/forums/voiture-el ... 10033.html

To refine a little these figures, I will systematically connect the EM230 with each load on the next refills ...

[Obamot]

... Anyway thank you for everything. In fact you say anything about the state of tension 'animal'! Have you measured? What have you measured the speed of "down"? Liquid "organic"? Mouth open or closed?

...weightloss? How are you from

[PITMIX]

hi Christophe
I have almost the same equipment as you, a madrid vae and bought a new trailer on ebay. The total for a shot of € 390 it's really great for walks with my darling, vae in Madrid too, and my baby. I could have fitted the bike with a child seat but with the trailer may have put a maxi-cozy.

[Christophe]

... Anyway thank you for everything. In fact you say anything about the state of tension 'animal'! Have you measured? What have you measured the speed of "down"? Liquid "organic"? Mouth open or closed?

...weightloss? How are you from

I vowed not what it causes sir?

Ah Super Pitmix, do you have the 24V or 36V version? Do you have a picture of your 4-wheel "bike" with the cozy inside (or not?) And some (quantified) feedback on performance?

[Christophe]

A) We bought a 2ieme electric bike B'ebike 5 of Decathlon, it's interesting to be able to compare the respective performances and uses! It's a "real" bike this time!

Are already some information on the subject: https://www.econologie.com/forums/bebike-5-b ... 10775.html

B) The foldable electric bicycle this subject began his 3ieme season after wintering 2ieme so. I recharged the battery once in February as charging continues. It worked just as well but after about 3-4 expenses this year / about 120 km (I drive much saw the March April May weather ...), I found an annoying thing with the battery.

In important and long efforts (rating of several hundred m) the bike is completely cut: It should be put to OFF after a few seconds and he leaves ... without necessarily overlap!

In short, it is not the battery which is empty but it looks like it has a temporary "weakness", voltage drop due to too much amperage requested?

This can happen even if the battery has been recharged and we did less with 5 km. After that can start to 20 km seamless. Really weird.

In addition for a few days, I have the impression that the phenomenon is reduced over time, so good point? Should perhaps "wake up" the battery of the wintering?

In short this is a specialist in electric propulsion / Li-Ion batteries could diagnose what it is or what it might be? And if there is an opportunity to do something with the battery? It can come from elsewhere?

For the moment, I have more or less "solved" the problem by braking (just to cut the assistance, not really braking) every 10 to 15 seconds uphill: there it no longer cuts ...

[stipe]

it's not a battery overheating problem?
Kind t ° sensor indicating too high a temperature, and history that you do not finish it like 3 reactor, which would be safe ...?

[Christophe]

Mmm ah yes it is possible to check.

Because now that you mention: the first 100 km of the year, it was actually more Frisque ...

On the other hand, I don't know if there is this kind of protection on a "basic" VAE ... it can be automatically included in the factory in all lithium ion batteries on the market ??? (to avoid explosions / fire under load?)

A check so.

What I am certain is that the battery touched by hand, is not hot! I had checked.