Replacement Brake levers for old Wisper 905e Sport

[TMcK]

I need to replace a broken brake lever on the original Wisper 905e sport. However the original 3 wire lever seems to be impossible to source. Is it possible to use a 2 wire lever instead?

 

[99t4]

What is it connected to?

 

[TMcK]

It's the wire that connects to the motor control unit, that shuts the motor off when you brake.

 

[fill]

Contact Wisper, after sales service is good even with 2nd hand bikes.. the Owner contributes in the pedelec.co.uk forum, post there if you cant wait til monday am.

 

[TMcK]

I'll try, but the part is not available on the spares pages of Wisper's website. Thanks fore your help.

 

[fill]

is the lever itself bust or just the sensor, the sensor can be replaced.. if the mechanical lever, you may need to replace with a new pair if you want to maintain a matching look.

If its a style issue you could buy off the shelf non sensored levers and apply a magnetic hall sensor for hydraulic brake upgrades.

afaik 3 wire sensors employ magnetic sensitive hall sensors while 2 wire variants employ reed switches, Both afaik will ground the signal wire on 'activation' so as long as you connect just the ground and signal wires to a 2 wire sensor it might be worth a punt if no other option can be found. ( my own quick search on the usual portal site turned up lots of 2 wire hydraulic ebike levers..

If the sensor recess is the same could you refit a hall sensor into a reed sensor supplied lever??

 

[TMcK]

is the lever itself bust or just the sensor, the sensor can be replaced.. if the mechanical lever, you may need to replace with a new pair if you want to maintain a matching look.

If its a style issue you could buy off the shelf non sensored levers and apply a magnetic hall sensor for hydraulic brake upgrades.

afaik 3 wire sensors employ magnetic sensitive hall sensors while 2 wire variants employ reed switches, Both afaik will ground the signal wire on 'activation' so as long as you connect just the ground and signal wires to a 2 wire sensor it might be worth a punt if no other option can be found. ( my own quick search on the usual portal site turned up lots of 2 wire hydraulic ebike levers..

If the sensor recess is the same could you refit a hall sensor into a reed sensor supplied lever??

Thanks for the advice, both the lever and sensor are broken (the bike fell over). I'll try the 2 wire lever to the ground & signal.

 

[fill]

The link above has both stick on sensors for non-ebike levers, And replacement sensors for dedicated ebike levers as options..

would a 3pin replacement sensor fit inside a 2 pin lever assembly??

However the stick on sensors do work very well and are very easy to fit and if fitted on the underside are not an eye sore

 

[TMcK]

Thank you everyone for your advice. I have found that connecting the replacement (2 wire) lever to only the black and green wires of the bike's loom (ignoring the red) has the desired function.