A hub motor kit with handlebar backlit display

[daniel.weck]

Hub motor kit with backlit display (same as Wisper Dapu / Dapush)

Looks good:

26" 200W 36V "VPES" Vorderreifen Umbaukit eingespeicht mit Display, 269,99 € - RFTEC Trend Fun Multimedia

More choice here:

Elektro Fahrräder & Umbaukits, VIPS E-Bike Umbaukits: - RFTEC Trend Fun Multimedia

Also sold under the brand Vitenso in Germany:

Details

Videos:

YouTube - Vitenso Freilauf

YouTube - Vitenso umbaukit

 

[emissions-free]

That is the Dapu system. I'm told it's a Japanese company but they are manufactured in China. I tested a bike fitted with that kit recently. That display does look quite tasty. It uses a torque sensor for the pedal assist rather than a speed sensor. The display looks quite nice but I don't think it adds much to the functionality over there standard LED display. I also didn't feel that the Torque sensor was particularly better than the speed PAS sensor, but it was only a very short test. The company selling the assembled bike had some reliability problems with this system in the past and preferred the speed sensing PAS.

The display allows an adjustment to the PAS assist level, battery remaining, speed, trip and some diagnostics for the controller. It's part of the complete controller and motor system from Dapu. The motor's small, pretty sure it's the same size as the mini 108 Ananda motor (108mm spoke radius). It also has a similar noise level to the Ananda motor and performed in very much the same way IMO. It's noticeably noisier than the Bafang motor but not obtrusively IMO. I believe they are also a little pricier than the equivalent offerings from Bafang etc.

All in all it's a nice package IMO.

 

[daniel.weck]

That is the Dapu system. I'm told it's a Japanese company but they are manufactured in China.

"Dapu" ... Not to be mistaken with the Japanese-design "Dapush" from Wisper

Thanks for your feedback !

 

[daniel.weck]

So, it seems clear that this is the same Dapu/Dapush motor kit as the one Wisper is building his new line of e-bikes with (*06 models):

Wisper Bikes

Emissions-Free, what did you think of the onboard diagnostics and handlebar display ? Would that replace or complement the functionality of a Cycle Analyst ?

Did you try the pedal assist sensor with the kit ? Still based on cadence or did that include torque feedback as well ?

I can't find any reviews of this kit anywhere, it would be good to hear more about it...without having to wait / purchase a Wisper bike or kit in Spring 2010, that is

 

[jerrysimon]

Dan you seem to find all the cool stuff

That display looks very simlar to the one Tongxin sell that is on that spreadsheet I posted before

http://www.tongxin.net.cn/OutRiderItems.xls

Scroll down to see it.

Regards

Jerry

 

[emissions-free]

Dan,

I can't really add much to what I posted previously and wasn't really aware that wisper were using this kit when I posted previously. I only had a short little test of a few bikes back to back. Some were equipped with the new Bafang front hub motor and some equipped with the Dapu system, both with and without the LCD display. I'm also going on what I was told by the people at the factory who were trying to sell me complete e bikes. The Dapu system I used was fitted with Hall Sensors, the Bafang was without hall sensors.

The system was working 100% so sorry didn't see any diagnostics. It's definitely not a replacement for a cycle analyst, just basic information like battery power, speed, ODO, that kind of thing. I believe it will give an error message only when a fault is detected. The LED display that was shown on the spreatsheet that Jerry posted above also looks very similar to the basic Dapu display as well as the LCD display so maybe Tongxin just use Dapu's controllers etc or they have some kind of collaboration.

 

[Wisper Bikes]

Not to be confused?

"Dapu" ... Not to be mistaken with the Japanese-design "Dapush" from Wisper

Thanks for your feedback !

No confusion Daniel, it's absolutly the same company, the names Dapu and Dapush are both used. Dapush are a Japanese company who, like most Japanese companies, manufacture in both China and Japan.

The Dapush motor we are using has more power than 200W on the one shown here, at 250W it has been designed to our specifications.

We have found the Dapush motor slightly quieter and more powerful than the Bafang, the thing we liked about it was the free wheel and size which is better suited to a front wheel drive system.

Yes they are more expensive than the Bafang which, incidentally, we still love!

Best regards David

 

[daniel.weck]

No confusion Daniel, it's absolutly the same company, the names Dapu and Dapush are both used.

I know David, I was being ironic

 

[eddieo]

My eyes aren't that great and this Dapush display really appeals..All I want is basic info, miles travelled, speed, battery condition.

I am sure the Wisper kit will be very well integrated and the support is so good anyway you cant really go wrong IMO. Better then ordering from Germany/China with all the hassle, language barriers etc....

All we need now is David to indicate a price for the kit and some pictures of battery, come on you know you want to!

 

[mapman]

yes , come on david some info on the kit please.

mapman.

 

[eddieo]

yes , come on david some info on the kit please.

mapman.

He will just make himself ill keeping all this knowledge and info to himself

 

[Wisper Bikes]

Knowledge.

I promise as soom as I have images and we have tested for range you will be the first to know.

We are using the big display consul as shown in the images, the diagnostics are brilliant, though I don't know if the German unit has them turned on. They are reactive and tell you where the problem is but only if and and when you have a problem, much like car computers.

All the best

David

 

[RobinC]

I remember this display & motor catching my attention at the London Cycle Show. At first I thought the motor was a Tongxin. As a DIY bodger I was also interested in the display.
The motor seemed quiet with the 'lift front wheel and turn on motor' test but I didn't have time to do a proper test.

The Tongxin site seems to be more often down than up so I have attached the picture of their display mentioned earlier. Since they don't usually respond to individual contacts this is of academic interest to most anyway.

Robin

"LED Display:
Speed,kph and mph,16"-28"
Distance single, be back 0
Distance total
Power capacity, 24V or 36V
Lamp
Assistant:
OFF-LOW-MID-HIGH
Blue Background light
Auto sleep mode power save

Odometer display&its controller(speed,distance,time,Off-High-Mid-Low electric assistant) 0.7Kg 500 RMB"

 

[eddieo]

But you dont say on what bike? I know the wisper 906xc has the Dapush motor and the controls pictured (not the Tongxin) and that was at the show.........

 

[winterdog]

just wondering of the display is back light (handy this time of year)?

davidk

 

[eddieo]

Any more details on the Wisper Dapush kits?

 

[Wisper Bikes]

Kit

Yes the unit is back lit.

Hi Eddie

We hit a huge problem producing the unit in carbon, so we have had to revert to Aloy and a plastic cover. I am off to China on Saturday to sort it out.

Sorry for the delay. I will keep you posted.

All the best

David

 

[eddieo]

By "the unit" I guess you mean the battery case? whatever the outcome with this design hickup have you managed to incorporate the battery within the frame do you think?

My needs are a little different then most. as when I retire I want to go on much longer motorhome trips. electricity for charging is not always available so a bike that I can detach the battery from, and ride as a normal bike has significant advantages. Plus I can buy a high spec alfina hub bike, that should keep the overall weight below 20kg another significant factor when motorhoming (weight always an issue)

an interesting year from Wisper me thinks

 

[Wisper Bikes]

Kit

Hi Eddie

Yes I mean the battery case and bracket and the battery is forward of the saddle post.

The battery can be easily removed and the battery bracket too if you need to. You can even change wheels quickly and end up with a pretty well non electric bike.

All the best David

 

[eddieo]

last question and you can go for sunday lunch

battery capacity?