New bike

[chris_n]

that trick does not work anymore bosch or Yamaha motors.

this is all the dongles for all the motors atm
http://ebiketuning.com/

That trick certainly does work on my recently bought 2016 Haibike. Fitted a spare speedo magnet on to the end of the pedal threads and fitted the sensor outside the chains Taylor job done!

 

[STEVEMANFA]

Hi Chris_n

Is it any good like that?

 

[soundwave]

if it works with out throwing up error in the display then you are lucky but doubt it will work for any length of time.

all its doing is changing the wheel size and doubt you will get it up to 35mph like that even if it did work.

try it you never know until you have might save 100 quid on a dongle but i doubt it

 

[STEVEMANFA]

Don't think I will go down that road if it will put a fault on the display, I don't want to mess up my new bike.

 

[soundwave]

i doubt it would work anyway tho the error will be the 503 sensor magnet not in the right place.


if you get a bad ass 1 you can remove it and reset the bike and back to factory settings.

 

[paul20v]

Well I just had to part with some wedge for this bad boy
Hope to try it out tomorrow
View attachment 14353

Very nice too

 

[chris_n]

Yes it works fine apart from the speedo not working properly but that will be the case withe the badassebikes dongle anyway. As for the comment by by Soundwave that he doubts it will work for any length of time I fail to understand the login behind that. It works because the "speedo" sees the crank rotating at 70 -90 rpm which it displays as 5-8 mph, it does not know which gear you are in or what gradient you are riding on so has no way of knowing whether you are cheating it or not. I have ridden a couple of hundred miles with it like this and it is fine.
What I do find though is by overriding the speed sensor you have to be realistic with your expectations, the standard gearing is to low and the power is not enough to be able to reach high speeds but it does remove the annoying moment when the power cuts and you realise you are only human.
There is no error on the display! 35 mph is not a realistic target for a 250w motor for any length of time regardless of gearing unless you are more than matching the power output.

 

[soundwave]

9.9 out of 10 people this does not work so if it does work you are lucky

 

[chris_n]

If that is the case then 9.9 people out of 10 are not positioning there magnets / sensors correctly. As I said above the motor doesn't know what gear you are in or the terrain you are on, pedaling will always give the speeds indicated.
There is no way a software engineer could reliably detect this if he were to measure the time delay between a cadence sensor and the new speed sensor, if it was constant they could then suspect something had been done but if you had a 38 tooth chainring and a 38 tooth rear sprocket this is the reading you would get anyway regardless of wheel size.

 

[STEVEMANFA]

Well if it don't mess my bike up then I may give it a try if I can find another sensor.

 

[chris_n]

You don't actually need another sensor, just reposition the existing one on the outside of the left chains Taylor, use Velcro ties, cable ties, tape or whatever and secure either the existing rear wheel speed sensor magnet or any other magnet to the left hand crank arm and away you go.

 

[soundwave]

its not that the magnet is in the wrong place i tried it on mine and it does not work or id not have had to buy a dongle.

bosch cant prove a dongle has been used anyway

 

[chris_n]

The bike in question has a Yamaha motor not Bosch. I can't comment on Bosch systems as I have no experience with these.

 

[soundwave]

well more ppl that try it and works on Yamaha bikes then no need to dongle them.

see if steve has same luck as you