bought conversion-set -> what motor/controller is this ?

[kraeuterbutter]

hi..
again (after the sparc ... which still does not run in a bike sofar because one part is missing ) i have bought an conversion set from ebay..

this time i paid a little bit more (~200 Euro inkl. shipping)
for a complete set (except the batteries, will use LiFepo i have already at home)

however:
First i would be interested if somebody does now WHAT i have bought..

 

[kraeuterbutter]

first the Motor-unit:

also it is new it has some cratches and the isolation which holds all wires going into the motor is also damaged a little bit

however: it says from the seller at ebay:
180Watt (at 24V)
but he told me you can use it up to 50Volt (the controllerunit allows this)
then the power will go over 250Watt

oh: and its a geared motor (i think its clear because of the tiny size of the motor that it must be geared (11cm Motordiameter, 13cm space between two opposite spoke-holes)

 

[kraeuterbutter]

the controller-unit:

if somebody can read this ?!?
what does it say ?

and how to mount the wheel to the bike:

i have no idea if this it he right order to mount it ?!?
the ring in the middel is a MUST to be installed, otherwise the fork can break, ....

 

[kraeuterbutter]

and the plan how you have to connect everything...

puhh...
the strange thing: the connectors do not fit..

there is a connector on the motor with 8 pins (ok, 3 motorwires and 5 sensor i would guess)

but on the controller there are 3 seperate wires for the motor (i guess)
and another connector, completle different and not fitttable to the motor for the sensor-wires..
STRANGE...

 

[kraeuterbutter]

so: another problem:
i was send TWO "conversion"-Switches..
but no pedelec-sensor..

have to call the guy...
(conversion-switch: its able to drive as an pedelec, or - offroad - in e-bike mode with the hand-throttle alone without pedaling)

 

[Ian]

The motor is the Suzhou Bafang 8Fun model SWX01, manufacturers details are here.

Suzhou Bafang Motor Science Co.,Ltd.

I'm not sure about the controller and other parts though.

 

[Matt]

I would be really interested to know how you get on with this as it seems right up my street as a first go at a DIY job.

Did you get if off ebay Germany?

 

[Greytop]

Hi
I'm also very interested in how you get on as I'm trying to obtain a kit with this make of motor too.
Can you post details of where you bought it and if the kit can be shipped to UK. I'd like to contact them myself.

Do you know if they sell 36V hubs?

I'm trying to get information from Wilkotech (wilfriedhh@yahoo.de ) at the moment.
They only seem to sell via EBay auctions. Thats tricky for me as I speak no German!

Please post how you get on, I will probably be trying to do the same myself in a couple of months time.

The motor power, voltage and size look similar to a bike being sold on EBay UK at present.

26" New Lightweight Electric Mountain Bicycle Bike 26BL on eBay, also, Bikes, Cycling, Sporting Goods (end time 25-Apr-08 22:17:06 BST)

Does anybody know if this is the same motor?

Has anyone bought one of these bikes?

Thanks

 

[Greytop]

Sorry no one else can help you, kraeuterbutter. Please excuse me if you already know all this.

As I said, I don't own a kit yet but offer a few guesses from your photos, which may help.
On the controller unit the 5 way and yellow/black connectors seem to be fitted with the approriate mating connector halves, ready to be fitted to cable, which probably has to be fitted by you.
This may be because of the distances involved between external components like the throttle, pedelec sensor, brake sensor and hub motor.

The puzzle is that both of these connectors seem to be doubled up. That is, one male (plug) and one female (socket) is there for each. The wiring diagram doesn't show the need for this.
Experimenting with these connections could destroy the modules.
You definitely need more information from your supplier!
I'd like to see that too. Let us know how you get on.

 

[kraeuterbutter]

hi..

sorry for the late answer, had no time so far...
i bought it here:
www.specialbikes.at - Tandems - Elektrofahrrad / Umbausatz

not Germany, but Austria (were i live)

they offer 2 versions: a 180Watt version and a 250Watt Version

whats the difference ?
both kits have the same motor
both kits have even the same controller
the difference is: when the controller does shut of the motor because of low-voltage..
on the 24V-Version it does do it at 17Volt
on the 36V-Version the controller is set the way, that it does do it at 31Volt

also i will use 9s oder 10s batteries (36Volt) i have desided to go with the 17Volt-version..
so i can also use smaller batts if i want
on the other hand i have to monitore the packs-voltage by myself..
have found a little electronic for that (20 Euro) that will flash a bright LED when voltage goes under a sertane value and light constantly if it falls under a second range

the controller can handle up to 50Volt
(the guy who sold it to me, told me, that if i wana use it within an 20" wheel and want more hillclimbing-power i can go up to 50Volt with that controller)

i have to say:
i have wrote the guy ~10mails with lot of questions he always answered to me..
very helpful sofar..

for the motor there is a 2year-waranty..
they offer also a set for ~75 Euro (breakes, gashandlebar, sensor and controller) so you can equipe a second bike and only have to change the motor..

i got also an instruction manuel (pdf) send by them,
with some info (unfortunatly not all i need for installing it as an Noob iam..)
if somebody want the manual, send me a message..

oh: looked again for the price: i paid 250 Euro (without battery)
the battery on the pictures looks like the battery you showed on your UK-bike..

greets,
Reini

 

[kraeuterbutter]

oh:
meanwhile i think THIS must be the right direction to mount the rings..

the manual says:
"Aufgrund des kurzen Achsradius von nur 4 mm wirken enorme
Kräfte von bis zu 10.000 N in Form eines Hebels auf die Gabelaufnahme, daher ist die Montage des
geschmiedeten Sicherheitsringes unbedingt erforderlich."
wow... 10.000N because the radius of the axel is only 4mm...
thats why the black rings are provided

 

[kraeuterbutter]

ok..
this is how i THINK it has to be wired:

considering this plan:

 

[Tiberius]

the manual says:
"Aufgrund des kurzen Achsradius von nur 4 mm wirken enorme
Kräfte von bis zu 10.000 N in Form eines Hebels auf die Gabelaufnahme, daher ist die Montage des
geschmiedeten Sicherheitsringes unbedingt erforderlich."
wow... 10.000N because the radius of the axel is only 4mm...
thats why the black rings are provided

Hi KB,

The black rings are standard lock washers, designed to stop nuts from working loose under vibration. I don't think you should rely on them, or on just clamping it up very tight to transmit the torque from the axle to the frame.

What would be better is a torque arm or a special torque washer.
Are there flats on the axle? What is the frame material?

Nick

 

[kraeuterbutter]

hi..
the Frame is an old mountainbike,
not suspension, steel-fork
http://www.kraeuterbutter.at/Bilder2/sonstiges/Mountainbike/Bild02.JPG

the axel: yes it is flat, so not completley round

why is that from interest ?

for the Ring:
its not the typical standard "circlip/retainer/snap ring/lock washer" (don´t know how you call that correctly) you buy in the local do-it-yourself store

it was said it is a "wroughtiron ring" ?!?
i have send the bikeshop a mail with this question

should i use additional "screw lock" from loctite to be safe ?

 

[Tiberius]

the axel: yes it is flat, so not completley round

why is that from interest ?

I think that's the crucial feature - it enables you to make something that will stop it turning in the frame.

Lock washers, loctite, etc will only help to keep the nuts tight - you will still be relying on friction to stop the axle turning, whatever the washers are made of. That won't work with an aluminium frame, and its still not the best way with a steel frame.

If the washers had holes in them that matched the shape of the axle, then they would be better. But you really need a small torque arm - something that fits the axle flats and transfers the torque to the frame.

Nick

 

[Beeping-Sleauty]

torque washer

KB,

these torque washers are critical to stop the hub turning within the frame.

if not secure, the hub will spin and twist off the cables.

beeps

 

[kraeuterbutter]

hey...
yes, before i ordered the bike and asked many questions he from the shop send me this picture:

but when i ordered he asked me:
"standard-fork or suspension fork"

i have a standard-fork... and now the parts are missing in the kit and i thought that it maybe is because of my standard-fork...
i will ask him this as well and order them too..
maybe they also only missed it to include them ?

(i got TWO switches (instead of one) and no pedelec-sensor as well... so it seems that there were problems at packing)

 

[kraeuterbutter]

hi...

very slow progress..
(exam stress, my bike standing in my homeland and not with me here in vienna)

however: i have brought my old bike to vienna yesterday
it has a steelfork..

the description of the electric motor says: its for 100mm forks..

well: i dismounted my wheel from the bike, measured the fork: yes, 100mm

and now: when trying to mount the motor: wholy sh.... its about 15mm to wide !

is this normal ?
do i have to "bend" the fork apart so that the motor fits ?

 

[gedemeisterdk]

hi

I got this kit as well. (from eBay, Austria), got the 36v nimh kit as well
Unfortunately it was in backorder, so I don't have it yet.

so we are in "the same boat" as they say.

anyhow, I don't think you can bend your forks, structural stability will be lost. ;/




gede -denmark

 

[rhfubar]

Hi

I've just perchased the Alien bike kit (36v 10A for 26") from ebay. It looks really promising, but the width between the forks has to be 110mm. It will not fit on my current forks and I can't bend them . Can anyone advise me which forks to get?