xiongda questions

[Deleted member 4366]

But D8veh its a fake. You've told us often enough that new hub motors can climb any hill not like those crummy crank drives...
It's obviously a fix it must be a bust mid motor in the picture.

And the gears mean mid motors can climb hills at lower speed if you spin the pedals.
No pedalling no go. But isn't that true of bicycles not motor bikes.

I've never called crank drives crummy.

If you're referring to the burnt motor on the previous page, then it's very wrong and misleading of you to take it out of context and use it in an argument about whether crank-drives are better than hub-motors. The guy ran it with a hall sensor error, which you should never do with any motor , whichever type.

The low speed at which motors climb has nothing to do with the type of motor either.

 

[D8ve]

Misleading is also what I would call a short hill race result as a measure of effectiveness of motor design.
The more watts avalable the higher the potential hill climbing speed.
Hence a 11kw hub beating 1 kw crank drives up pikes peak.
I try to look at overall design and efficency.
Sometimes hub drive is best. Cheap and effective.
Sometimes mid motor can be efficent but costlier.
They all have a place.
Perhaps a century race with hills to compair range and speed?

Should we have bristol to Taunton return at the same time as the hill climb?

 

[Fordulike]

d8veh vs D8ve = interesting

 

[Deleted member 4366]

Misleading is also what I would call a short hill race result as a measure of effectiveness of motor design.
The more watts avalable the higher the potential hill climbing speed.
Hence a 11kw hub beating 1 kw crank drives up pikes peak.
I try to look at overall design and efficency.
Sometimes hub drive is best. Cheap and effective.
Sometimes mid motor can be efficent but costlier.
They all have a place.
Perhaps a century race with hills to compair range and speed?

Should we have bristol to Taunton return at the same time as the hill climb?

All the bikes in the race were legal certified 250w bikes limited to 25km/h. You're misleading people again. There were no 11kw bikes there.

 

[D8ve]

You missed the reference to pikes peak.I got a number wrong but the first hub motor bike ever to finish the pikes peak race was in 2012. It was circa 128volt with 23amp max. It was still beaten by two mid drives but did beat the optibikes that had held the crown previously.

I try to avoid inaccuracy where possible.

 

[1boris]

I tried a new 48 volt Xiongda (250w) motor today.A friend finished his bike today.Now I really understand why D8veh has Xiongda as the favourite motor.The High speed gear on this motor behaved totally diffrent from my motor,which had internal gear slipping problems from day one.Anyone into legal bikes would be very impressed by this new Xiongda motor imo.Cant see anything beat it at the moment

 

[Deleted member 4366]

Thanks for that. It's nice to get a sanity check from time to time.

Unfortunately, hardly anyone will get the chance to try one, so they won't have a clue what we're talking about.

For anybody contemplating one, they do take a bit of shoe-horning into the frame. The front one can't go in suspension forks with a disc brake and the back one is also quite wide with a disc fitted.

 

[mfj197]

And the high cadence you need on a crank drive is not for evreyone

I find the cadence too low on a BBS01!

 

[handbaked]

With 48T/11T gearing, my tired old legs can cruise at about 23 mph (with help from the motor) and just touch 35 mph for a short burst.

Do you know which 8 speed freewheel you are using? The only 8spd I can find have 13t as the smallest cog and I would ideally like 11t like you suggested. Thanks

 

[1boris]

 

[handbaked]

In the bag under the seat.

[URL=http://s451.photobucket.com/user/d8veh/media/d60cc1bd-00bd-4cbb-accb-c79cf097bcd1_zps98c1fef6.jpg.html][/URL]

Are you running hydraulic brakes? If so do you have sensors to cut out the motor power when the brakes are in use? Bonnie at xiongda can only provide the levers and sensors for cable brakes. I know there are sensors available for some of the BBS range as eclipsebikes do them but not sure about others...

 

[Deleted member 4366]

Are you running hydraulic brakes? If so do you have sensors to cut out the motor power when the brakes are in use? Bonnie at xiongda can only provide the levers and sensors for cable brakes. I know there are sensors available for some of the BBS range as eclipsebikes do them but not sure about others...

I normally recommend brake switches, and I intended to fit some, but the pedal sensor has such a fast response time that they're not really needed. The only risk would be if your throttle broke when you fell off the bike, though not ideal, you can still switch off at the display or battery, so I'm not too concerned about it, especially with a thumb-throttle that's unlikely to get broken in a crach or by misuse. I think the lever would break before tge internals.

For a freewheel, you can get a DNP one.

 

[handbaked]

I was hoping to get some hydraulic sensors, does anyone have experience of them and do they work with all systems?

 

[Deleted member 4366]

All you need is a switch that switches when you pull the brake. If you can put a connector on a wire, any brake switch will be compatible.

 

[handbaked]

I can put together cables..just finding a switch for the task then.

 

[Deleted member 4366]

A magnet and a small reed switch is the easiest, but don't get too powerful a magnet for a small switch because it'll break it.

 

[jonathan75]

Does the Xiongda accept controllers & LCDs (& indeed LED displays) other than that which they sell - without any reprogramming involved? I've overspent a little recently (bought a nice Dahon Cadenza with Alfine 8 gear hub) and was wanting to see if I could get just a Xiongda motor on its own and do the rest at my end. If not, do they sell just the controller and would it fit other LEDs/LCD displays, i.e. what kinds of ways can I keep my costs down?

 

[handbaked]

I dont know the answer to ypur frist q's but i do know they sell the controllers and lcds separately. My kit has actually arrived now, soon to get the wheel built

 

[Deleted member 4366]

Does the Xiongda accept controllers & LCDs (& indeed LED displays) other than that which they sell - without any reprogramming involved? I've overspent a little recently (bought a nice Dahon Cadenza with Alfine 8 gear hub) and was wanting to see if I could get just a Xiongda motor on its own and do the rest at my end. If not, do they sell just the controller and would it fit other LEDs/LCD displays, i.e. what kinds of ways can I keep my costs down?

No. The controller has special software, and probably so does the LCD, which has levels 1 to 5 plus "L".

I tried a different controller on the Xiongda, but it wouldn't sync. That controller could deal with just about any other motor.

 

[Swytch Bike]

Does the Xiongda accept controllers & LCDs (& indeed LED displays) other than that which they sell - without any reprogramming involved? I've overspent a little recently (bought a nice Dahon Cadenza with Alfine 8 gear hub) and was wanting to see if I could get just a Xiongda motor on its own and do the rest at my end. If not, do they sell just the controller and would it fit other LEDs/LCD displays, i.e. what kinds of ways can I keep my costs down?

Hi Jonathan

The Xiongda controllers are designed specifically for their motors. Xiongda are currently trialling a number of different controllers from various local manufacturers. The main one they use is Kunteng, which has a good current output, is cheap, but not the most reliable and not amazingly smooth at switching gearing mode. However they are trying out a new controller from LiShui (http://www.lsdzs.net/) which offers smoother switching and better reliability but not quite as much power (it's also a bit more expensive). We are trialling the new LiShui controller at the moment on a 36V rear kit to see how it performs in comparison over a number of different trip types.

We have spare 36V and 24V 250W Xiongda controllers (Kunteng) in stock, as well as the LCD03 displays, we can also fix you up with a hub motor / motor wheel on its own if you're still looking - so please get in touch (contact details below)