Hidden Power roller drive

[sk8norcal]

http://www.hiddenpowermarket.com/

[youtube]ang1xBIwgPY[/youtube]

 

[Whiplash]

It seems if you're going to go this far a simple drive with a nice hard rubber roller on the motors on each side driving against the wheel with a strip of grip tape adhered to the V brake surface would be better? No more tire wear and it would almost never slip!

 

[turbo1889]

It seems if you're going to go this far a simple drive with a nice hard rubber roller on the motors on each side driving against the wheel with a strip of grip tape adhered to the V brake surface would be better? No more tire wear and it would almost never slip!

Now that is a winner of an idea. Think about it, how many bike frames are out there with mounts built into the frame for both rear V-brakes acting on the rims or a disk brake on the hub. Why not make a motor kit that mounts to the V-brake bosses on the frame? Should be strong enough consider they can take brake loads and a good solid place to mount that uses standard size and position mounting holes rather then trying to make clamps for frame tubs that come in all different sizes and profiles. Then make the drive rollers run on the rim surface where the V-brakes usually work so zero tire wear and you can run any kind of tire. Two small sealed inrunner motors one on each side on pivot arms with small diameter hard rubber rollers. Long story short use the V-brake bosses to mount your motor and run a rear disk brake. Could make a very nice option.

Just like this picture that Adrian posted only with direct drive hard rubber rollers on the motor shafts instead of belt reduction and running on the rim surface rather then the tire surface.

 

[BMacW]

I've been in contact with them since Feb. And recently installed mine. Since this is one of the two top threads that comes up on google search. I would like to contribute some information, as it was very hard for me to get any details on the kit during my own research.

I have the Korean, US version which does not have the hall effect sensor for pedal assist.



https://www.youtube.com/watch?v=jeMowqxl6n0

 

[samsavvas]

I've been in contact with them since Feb. And recently installed mine. Since this is one of the two top threads that comes up on google search. I would like to contribute some information, as it was very hard for me to get any details on the kit during my own research. I have the Korean, US version which does not have the hall effect sensor for pedal assist.

Hi,

Thanks for posting these pics and the video. Any chance you may have some more information in English? Or sources for more info? How many versions are there? I'm interested to know if there is a version for pedelec or pedal-sensor control...

Savvas.

 

[BlackStridaAustria]

Hi folks,

there was already a report about the Strida specific 2014 version posted here:
Strida hidden power electric Kit

The picture below shows (yeah, not really) a possible solution for the main issue (regarding Strida only):
Without the arresting mechanism (below the BSA avatar) would the motor arm touch the front tyre in folded position
I've no idea why they've used the shorter arm for the Strida version....

I'm familiar with folders, but not with e-bikes; therefore I'm highly interested in your meaning about the dumb throttle.
It doesn't have a recoil spring!?!

@samsavvas:
At the front edge of the box at pic 8 of BMacW are the available versions shown;
the PAS version for Strida isn't ready yet.
Any more questions - plz feel free to ask

Hippenpower launched recently an office in Vienna to supply the Eropean market from here.

Hiddenpower G.m.b.H.
Lugeck 1/39
1010 Vienna
Austria

Phone: +431 5226243-15
http://www.hiddenpower.co

 

[BMacW]

I've been in contact with them since Feb. And recently installed mine. Since this is one of the two top threads that comes up on google search. I would like to contribute some information, as it was very hard for me to get any details on the kit during my own research. I have the Korean, US version which does not have the hall effect sensor for pedal assist.

Hi,

Thanks for posting these pics and the video. Any chance you may have some more information in English? Or sources for more info? How many versions are there? I'm interested to know if there is a version for pedelec or pedal-sensor control...

Savvas.

They do have a pedelec version. I opted for the throttle version because I live in US.

You can download the PDF product guide here. I'm sure if you contact them, they will send you this as well.
https://drive.google.com/file/d/0B-xr0yOsiO8qdFl0TzNoNFMyVXFmeEhxOTRPVVFiZzM0aW9F/edit?usp=sharing

Installation is easy on the brompton. It does not work that well in the rain (as expected). Otherwise it's quite a nice setup especially on the brompton.

You can see it in action here
http://www.youtube.com/playlist?list=PLcV6cMg38nNyDs8IVQ7GYwpzRc6weCZ4f

 

[samsavvas]

I emailed the fellow in Austria who has some local involvement with the company. There are in fact a number of these drives available, especially designed for different bikes, including the Brompton and the Moulton TSR. Throttle only at present (for the TSR) but apparently PAS is coming.

Savvas.

 

[BlackStridaAustria]

I emailed the fellow in Austria who has some local involvement with the company.

Dear ES readers,

to explain the degree of our involvement and to avoid misunderstandings

Please let me introduce first my dear friend Mike; he's the owner of the first shop in Vienna which is specialised in folding bikes.
Rota Explicare
Mike was also interested in the Hiddenpower drive, he thought actually about adding the drive kit to his shops offer.
I'm Chris, an enthusiastic Strida fan, contributor of Stridaforum and you can read here about my odyssey for getting a HP Strida kit in hand.
(Out of personal curiosity and just for fun, btw.)
I do not have any connection to Hiddenpower; except the contacts listed below

- When I've picked up two drive kits directly from the Viennese HP office I've learned to know the sales director and the (perfect German speaking) sales manager - "Mr. M" in the following.
- I've called Mr. M several times, regarding installation issues, missing installation advice and our technical concerns.
- We've met Mr. M on Sunday afternoon (we had a very big yearly festival) and shown him the specific Strida folding issue.
Extract of the conversation: This week should Korean technicians arrive Vienna - target is to solve the problems.
(So far - Wednesday ~ 15:00 - no message)

For fairness it must be said that Mr. M. was hired a very short time ago, he isn't 100 % familiar with the product yet...

Throttle only at present (for the TSR) but apparently PAS is coming.

No sorry, there was a little misunderstanding in private:
According to Mr. M are both versions for Moulton in stock.
(But both are equipped with the dumb throttle )
The PAS problem was regarding only the Strida; as the cranks and the frame tubes are further apart than on most usual bikes.
We've been told that HP had trouble to figure out a functional mounting position of the Hall sensors.

However, we think this kit (in present condition) can't be sold to average customers, without recoil spring it's much too dangerous.
It should also be mentioned that the drive does have some kind of overload detection, may I say "you can brake it dead"?
But isn't it keen to speak here of a safety feature?
Or maybe we're overcautious?

If there is any question consider that we're just a local call away - and of independent opinion!

Chris

 

[BlackStridaAustria]

Here's the most recent statement (06.08.14) of Hiddenpower regarding the four points we aren't satisfied with.

We've also heard that they're working again on the PAS System because they've been told (by Hammer, the German Moulton distributor)
that the PAS is reacting too slowly...amazing, isn't it?
Well, that's exactly what we said about the PAS - far more than four months ago!
Sure, who would believe a small Viennese bikestore...

1. A thumb throttle WITHOUT recoil spring will be anyway unsafe.

This system is intended and very convenient. In case of Throttle Type, you can use this function as cruise control system. In addition, in case of PAS, you can control power as much as you like. It would be inconvenient when cycling uphill or long distance trip if your ideas that return system.

For the dangerous points you think, please read the answers for question #4.

2. The PAS System with just ONE magnet will be lame and imprecise.

The major reason for use of one magnet is to install different types of bicycles.
(Because bicycles have different standards each)

For PAS Sensor, it is possible to make up to 12 magnets if you want

We are in the middle of producing bracket to be installed on sensor. Because now there is not enough space to install sensor at Strida PAS

3. In folded position can the Strida not any longer be rolled along, the belt housing will interfere with the front wheel.

If you install mud guard, interference is not caused.

4. Many customers are asking for brake switches.

This point is the best feature of our Kits. There is no brake switching system on HiddenPower Kit, but an electronic controller is recognized brakes automatically. When putting on the brakes slowly, it will not be recognized. But when stopping with brakes urgently, the power will be cut off. That is why it is safe without recoil spring from your question #1.