Which motor will get me up hills easily?

[saneagle]

That guys method looks very dubious to me.

The shunt is a resistance device made of wire of a known resistance. The voltage drop across the shunt caused by the current flowing through the shunt is used by the controller to calculate and limit how much current is passed through the controller to the motor. First he joins all the three shunts in that controller together, and then he plasters the whole length of the shunt wires with a massive glob of solder. That shunt is now not a shunt at all. It is now a very low resistance. Other shunt mod videos show a small part of the shunt being coated with solder to lower the shunt resistance just a bit.

I doubt that the mosfets would last long if there were not 15 of them in that device. I reckon the only thing limiting power in that bike is the battery overload protection - or the mosfets blowing.

That video is totally misleading for anybody on this forum, and what he does is unsafe for the controllers we use. It would be better not to show it. Instead, you could describe how to do it properly and safely, or find a video that explains everything, or make your own one and post it.

 

[Ghost1951]

That video is totally misleading for anybody on this forum, and what he does is unsafe for the controllers we use. It would be better not to show it. Instead, you could describe how to do it properly and safely, or find a video that explains everything, or make your own one and post it.

Yes - I agree. It isn't my video. That is why I made my remarks. The video is misleading and seriously wrong. It needs taking down.

 

[soundwave]

they need a paki shop and a burger van

 

[thelarkbox]

Yes - I agree. It isn't my video. That is why I made my remarks. The video is misleading and seriously wrong. It needs taking down.

my bad for the vid, i had seen it linked elsewhere as an example and when it was prominent in the google search results i lifted the link.. I probably should have watched it through first.. whoops.. will remove now.

 

[soundwave]

IF I CAN KILL IT ILL EAT IT

 

[Ghost1951]

my bad for the vid, i had seen it linked elsewhere as an example and when it was prominent in the google search results i lifted the link.. I probably should have watched it through first.. whoops.. will remove now.

Great - and thanks. That guy is a crank and that mod would probably destroy the usual controllers we have, if not over stress the batteries and motors.

Cheers.

Saneagle and maybe Nealh know about this stuff and have done it so maybe they would do another shunt mod post. I've never done it.

These days - it is so easy to get and fit more powerful controllers if your battery can supply the required current, so that may be a better way if you are running generic Chinese kit.


EDIT:

Deleted my post about the dodgy video because it had a link to the now deleted vid.