How do I get my Wisper 705se to use constant assistance?

[CatH]

Hi All,

I've just gotten myself a fantastic Wisper 705se and I'm wondering if anyone can help me work out how to get it to use constant power.
I think it's supposed to give you a certain amount of power depending on how hard you pedal (or something that I haven't quite worked out yet), but sometime I just want it to give me constant power!
The guide says that setting H will turn off the torque sensor. I believe this is essentially setting 5 as I don't see an H on the display, but this setting still doesn't give me constant power.

Can anyone help me out with this?

Thanks,

Cat

 

[Andy-Mat]

Hi All,

I've just gotten myself a fantastic Wisper 705se and I'm wondering if anyone can help me work out how to get it to use constant power.
I think it's supposed to give you a certain amount of power depending on how hard you pedal (or something that I haven't quite worked out yet), but sometime I just want it to give me constant power!
The guide says that setting H will turn off the torque sensor. I believe this is essentially setting 5 as I don't see an H on the display, but this setting still doesn't give me constant power.

Can anyone help me out with this?

Thanks,

Cat

Do you mean constant power or constant speed?
The PAS function in my experience, just sets a percentage of assistance.
But there are tempo-mat setups that within the power of your motor/battery and the steepness of the hills try and keep the speed constant!
But unless its also got power recovery for the downhill parts, you will usually simply speed up and need to use the brakes.
regards
Andy

 

[Jonah]

If it’s the SE model it doesn’t have a torque sensor. The power is determined solely by the power setting and is constant (sort of) irrespective of how hard you pedal. Power will actually vary according to speed as it will try to reach a set speed and reduce power as it gets close to the cut-off (15 mph in highest setting).

 

[Wisper Bikes]

Hi Cat, thanks for investing in a Wisper. I am delighted that you are enjoying it.

Both Andy and Jonah are correct. The SE models do not have an F setting.

What do you mean by “constant” power?

Regards, David

 

[Wisper Bikes]

Hi Cat, thanks for investing in a Wisper. I am delighted that you are enjoying it.

Both Andy and Jonah are correct. The SE models do not have an F setting.

What do you mean by “constant” power?

Regards, David

 

[Nealh]

As I see it Cat wants max power from the offset !

Ebikes aren't like that they are not designed to be escooters, twist and go is illegal on bikes made after 2016.
You can get max power by selecting the highest assist level (usually pas 5) , though unless you have an illegal throttle in use you will have to pedal to get the power.
On flat terrain the power in pas 5 may not feel any greater then power in say pas 3 because there is little or no extra load being applied. It is only when more load is applied that pas4 or 5 is noticeable and this is when you encounter an incline.

An ebike overall is just a low power assisted pedal bike and not a moped or scooter, it requires rider input.

 

[Kudoscycles]

I don’t know the Wisper set up but talking generally hub drive e-bikes need some speed to get to max torque,the smaller Bafang motors need about 8 mph to reach max torque....this can be difficult uphill,which is why these bikes still need gears,also the reason that the g-tech ebike is a poor hill climber.
The larger diameter Bafang motors get to max torque lower in the speed range,4-5 mph.
This makes a big difference to hill climbing,if you cannot get to the speed to get max torque you may never get ‘over the hump’
If you don’t have strong legs this can be a problem.
We have all been involved in the lowering the speed/torque curve on these motors and I am sure Wisper is a market leader in that task.
Interestingly the 1000 watt direct drive motors (no gears) are useless at initial hill climbing,they need 12 mph to get to start max torque....you see girls in China pedalling like mad at the traffic lights to get the speed,then they can change to the throttle to get up to 25 mph,they will try to avoid slowing down to keep the speed,hence why there are so many accidents.Chinese cities are all on flood plains,few hills.
Not sure that answers your query.
KudosDave

 

[CatH]

Thanks everyone, I'm not sure how to explain. If you replace the word power with assistance on my previous post, I think it makes more sense.

On the LCD display, it shows the assistance level I have set up to 5, above that under "current" it sets itself. It seems it changes between level 1 and level 5 of "current".

I understand that throttles aren't allowed, I'm not asking that it goes without me pedalling. I pedal constantly so I'm asking that it gives me the same level of assistance at all times when I'm pedalling. It literally will start giving me, say, level 4 assistance and then it will give me none, it keeps almost revving like that whilst I'm constantly cycling. I would say it give 3 seconds of the assistance it's set at and and then gives me 10 seconds of none and so on and so forth.

I agree, I didn't think that this bike had a torque sensor but I'm just going by what the manual says:

"3.4.1 When you first ride your Wisper bike, you will notice that the motor will start working as soon as you put pressure on the pedals. This is the standard or torque mode. The more pressure you put onto the pedals the more powered assistance you will receive."

"3.4.4 Setting H is used to turn off the torque sensor. On setting H as soon as the pedals are rotating you will receive maximum assistance from the bike. You will not get any assistance on start off until the pedals have been turned ¼ of a revolution. H setting should only be used when you want maximum assistance from the bike without putting much pressure on the pedals. Using H setting will reduce your range by up to 30%"

Maybe there is a problem with this bike?

Cat

 

[Nev]

This sounds a bit like the intermittent fault I had with my Cube e-mountain bike I bought a while back. The power would come on and help and then stop and I would be pedalling unassisted then it would come back again.

It turned out to be a faulty speed sensor, once the shop replaced that I have had no problem since.

 

[Wisper Bikes]

Hi Cat, the paragraphs you quote are for the Torqe bike.

It does seem though that something is amiss. Please call me or Claud on Monday and we will sort out any issues. 07744226906

Kind regards, David

 

[CatH]

Hi David,

I'm looking at the manual on the Wisper site. Maybe the wrong one is uploaded. I'll give you a call on Monday.

Thanks Nev, hopefully it can be sorted quickly and easily!

 

[Wisper Bikes]

It will be Cat. Sorry for any inconvenience.