bafang crank drive kits

[mechaniker]

..... 8-Fun have built such a dominant brand image in the West that new entrants to the market will have a very hard time. If they can enrol Frank's help, they may be able to compete.

you´re right about the dominant possion in europe from Bafang.
Even I´m not a fan of Bafang I must admit that they found a way to be popular in europe.
I was one of the first seller in europe who has sold Bafang but Bafang was also the reason why I didn´t wanted to be a seller for e-bike motors anymore afew years ago......

the SFM-Motor I disassemble at the moment is much better as the bafang-crank-drive. This are my my first impressions, the rest we have to check in the future after some hundred kilometer of driving

so now I must order my 100pic´s from inside the motor and check the details into a pdf-file

Just one pic from the torque-sensor

regards
frank

 

[shemozzle999]

Looks good trex. Any further information on it? Where have you found it?

Michael

Available here - doesn't appear any cheaper than Bafang:

http://translate.google.co.uk/translate?hl=en&sl=pl&u=http://sklepebike.pl/pl/p/Zestaw-centralny-TSDZ2/214&prev=search

or here:

http://www.tsbicycle.net/products_detail/&productId=143.html

 

[trex]

they try to beat 8-Fun on quality and sophistication rather than price. The issue is how reliable their torque sensor is. Replacing a thumb throttle is easy, replacing that torque sensor is a specialist job. Britain has a love affair with the throttle whereas it's natural to have torque sensor in Europe, I am not sure that we'll see this kit here.

 

[shemozzle999]

I see the biggest problem as being the user not using the kit in standard form as the manufacturer had intended. Users tweak the system then blame the manufacturer for any failures

 

[mechaniker]

... Britain has a love affair with the throttle whereas it's natural to have torque sensor in Europe...

that´s true and I have a real problem to understand why the throttle is so popular in britain.
Many years ago when I was searching product´s to open a my first conversion-kit shop I thought it would be good to ride the bike with a throttle but after a few weeks using a throttle on a bicycle I was going to be against the throttle because a throttle don´t give me a normal bicycle-feeling.
I kickt my throttle in rubish and used from there on controller with 3 speed-steps later with five speed-steps and then the torque imitation controller as the best solution beside the torque controlled system

And maybe 90% of my worldwide customer´s confirmned me that they felt the same way and nearly every customer take the throttle away from the steering. My customer at that time come from Asia, South-America North-America Australia nearly the whole world but only in britain the customer keep the throttle.... but anyway,
everybody should drive the way he wants to drive as long he also use his legs and not let the motor do the entire work ;-)

regards
frank

 

[mechaniker]

ups....

I was to fast or to stupid for a correct reply, maybe I should change my signature ;-)

there is my text:

that´s true and I have a real problem to understand why the throttle is so popular in britain.
Many years ago when I was searching product´s to open a my first conversion-kit shop I thought it would be good to ride the bike with a throttle but after a few weeks using a throttle on a bicycle I was going to be against the throttle because a throttle don´t give me a normal bicycle-feeling.
I kickt my throttle in rubish and used from there on controller with 3 speed-steps later with five speed-steps and then the torque imitation controller as the best solution beside the torque controlled system

And maybe 90% of my worldwide customer´s confirmned me that they felt the same way and nearly every customer take the throttle away from the steering. My customer at that time come from Asia, South-America North-America Australia nearly the whole world but only in britain the customer keep the throttle.... but anyway,
everybody should drive the way he wants to drive as long he also use his legs and not let the motor do the entire work ;-)

btw, I think that the poland-company offer the Set for a very good price

regards
frank

 

[flecc]

I also don't understand the British preference for throttles Frank, but think it may in part be connected with the British tendency to see cycling as sport rather than transport.

I've owned both kinds of e-bike at the same time and find rides on good torque sensor bikes much more relaxing. Having to cope with the on/off nature of the common Hall effect throttles when riding on bumpy roads can be tiring on long rides, and they make it more difficult to ride economically, minimising current consumption.
.

 

[awol]

and they make it more difficult to ride economically, minimising current consumption.
.

I stopped using my throttle a few months ago, now only using PAS level 2 or 3 (of5). I find it much more relaxed cycling and as you say flecc I now get about 30% more miles from the battery.
I was tempted to remove the throttle recently but find it handy to pull me along small gaps where I struggle to spin the pedals.

 

[flecc]

I was tempted to remove the throttle recently but find it handy to pull me along small gaps where I struggle to spin the pedals.

Yes, that can be a throttle advantage in very confined traffic situations. However I find it possible to cope with those odd occasions using the pedals in stepping fashion, a slight thrust of a forward pedal and quick slight back pedal to thrust again on that pedal. Another way to describe this is using a pedal as a treadle, a bit like the rocking treadle on foot operated sewing machines.
.

 

[Kinninvie]

I need my throttle when riding in ruts too deep to pedal in.
Also handy when 2 wheel drifting in deep snow.
Other than that I pedal all the time on my BBS02 BUT I do tend to use the throttle a lot on my Dillenger hub kit.

 

[Deleted member 4366]

I had to go through some deep fllods yesterday. The throttle saved me from getting wet feet. There's loads of uses for a throttle if you've got one.

 

[flecc]

Yes, no question that an independent acting throttle is very useful in situations such as described by Kinninvie and d8veh.

It's on normal roads that I can easily do without one, and indeed prefer a torque sensor for e-cycling relaxation.
.

 

[D8ve]

For the hard of thinking(reflexes) I find the torque sensor perfect.
The drive is just like riding a normal bike but with bionic muscles.
Having a second control to learn and use would add to my thinking requirement and prevent me sleeping on the bike?

 

[AndrewJ]

Mechaniker - Any more thoughts on the SFM/TSDZ2 crank drive? Performing well? I'm considering purchasing one from that Polish website; how does it compare to the Bafang?

 

[mechaniker]

Hi Andrew,

I like that motor much more as the bafang but honestly,
there is no longtime use experience because the Motor just a few weeks in the market

regards
frank

 

[Fordulike]

Mechaniker - Any more thoughts on the SFM/TSDZ2 crank drive? Performing well? I'm considering purchasing one from that Polish website; how does it compare to the Bafang?

Have you got a link for the Polish website, which sells the crank drive you mention?

 

[AndrewJ]

Fordulike - It's on this page but here it is again: http://translate.google.co.uk/trans...l/pl/p/Zestaw-centralny-TSDZ2/214&prev=search

 

[Bartek]

I plan to purchase an electric motor and convert my bike (mainly commuting to work in the city). There are some slight elevations in my area and I would like to cycling about 20-25 km/h. I consider buying a TSDZ2 kit from www.btn-ebike.com. But I don't have possibility to do test. it seems to be risky to buy it from China. Maybe someone can tell me is it worth its price? How the torque system works - can you feel any lags in engine work (like cadence sensor)?

 

[Deleted member 4366]

Can you give us a link to the listing of what you want to buy rather than the supplier?

BTN is owned by Kevin Fang, who's a very nice funny guy. I've met him a few times and ordered some stuff from him. He's been selling ebike stuff for many years.

Like nearly all the Chinese suppliers he's honest and reliable, but if any mistakes are made on either side, it's very difficult to sort it out because of the shipping costs, so make sure that you know what you're ordering.

Apart from that, it's much better to go for a product that's more universal because there'll be a much bigger shared knowledge base for sorting out technical problems.

Torque sensors don't have advantages that warrant taking a risk. For commuting, a hub-motor system with a speed sensor would be a much more logical choice. If you genuinely don't want to travel over 25km/h and you don't have serious hills, a crank-drive won't offer any advantages for commuting. You'll only notice the disadvantages.

If you tell us your weight and what bike you want to convert, we can advise you which system to get.

 

[Bartek]

This is my bike: http://www.bikekatalog.pl/2009/rowery/1836/Arkus.Classic.1100/ - I plan to buy Shimano brakes, better tyres (maybe Schwalbe Energizer?) and chain.

Link to engine: http://www.btn-ebike.com/mod_product-view-p_id-190.html

My weight: 71 kg.

I have tested an e-bike with 8Fun (this one: http://www.oleole.pl/rowery-elektryczne/no-name-perfect.bhtml?from=pla&gclid=Cj0KEQjwmNuuBRDTu5rDjr2kxJsBEiQAWlm6UikE6iIzZ-Ub0FL5fac4q1f3GWm95GMPMOweLFUrRtMaAoqd8P8HAQ) and I am not satisfied by this kind of bike. The engine reacts to slow and innacurate. There is no smooth cooperation.