TIP needed - How to remove the spider locking nut from M510 (I got the tool)

[Karamba!]

Hi,
I am trying to take the motor apart, and as usual, there are hurdles in the way. This time is the spider locking nut, which is super tight. I have bafang´s official tool (which kinda sucks), but in order to loose the nut one has to apply the force in the same direction than the freewheel, hence I have not been able to loosen it. I´ve tried putting the motor in a vise, but the problem is pretty much the same. I would have to somehow fix the spider (which is not really strong) to be able to unscrew the nut. I ´ve even used a bolt screwed into one of the ISCG mount holes to create a stopper for the spider, but the bolt ended up bent.
Any one smarter/more experienced than me, that can shed a light?
Any Macgiver among the public?
Greatly appreciated

 

[Mabman]

Lefty tighty and Righty loosey for that nut. That tool does look sketchy also? The one I have has a 1/2" drive and I hook it up to my cordless drill.

 

[Karamba!]

Lefty tighty and Righty loosey for that nut. That tool does look sketchy also? The one I have has a 1/2" drive and I hook it up to my cordless drill.

indeed, I've been loosen it to the right, which is precisely the direction of freewheeling, hence there's nothing impeding the thread to rotate along with the nut. That's the core of my dilema.

On a side note: Can you share where you bought your tool? Mine is the original Bafang as far as I know, and yes, it sucks!

 

[RustyIron]

I would have to somehow fix the spider (which is not really strong) to be able to unscrew the nut.
Any one smarter/more experienced than me, that can shed a light?

Take an aluminum bar or small length of steel angle. Steel bedframes are just the right material. Take a piece about two feet long, and drill holes to match the holes in two adjacent spider arms. Bolt your Bed Frame Tool to the spider. Now it's a long handle that will allow you to hold everything rigid as you loosen the nut.

 

[Karamba!]

Take an aluminum bar or small length of steel angle. Steel bedframes are just the right material. Take a piece about two feet long, and drill holes to match the holes in two adjacent spider arms. Bolt your Bed Frame Tool to the spider. Now it's a long handle that will allow you to hold everything rigid as you loosen the nut.

Thanks RustyIron, seems the way to go.

 

[Waynemarlow]

Your basic chain whip for holding the rear cassette whilst undoing that is more than suffice. Basic trick is to zip tie the chain section in a couple of places to stop it coming off the sprocket. If that is still a bit tight then put a bit of pressure on the tool ( its a left hand thread by the way ) and tap the tool with a hammer gently, the shock normally is enough to break the grip of the thread.

 

[Karamba!]

Thanks to both.

Mission accomplished.
Now let´s see what else Bafang has it for me...

 

[pembroketrike]

Lefty tighty and Righty loosey for that nut. That tool does look sketchy also? The one I have has a 1/2" drive and I hook it up to my cordless drill.

 

[pembroketrike]

Thank you posting that the thread is "Righty loosey". I hadn't expected that. I bought the right tool on Amazon. This is is my set up for loosening the nut on my Bafang M500. The square steel bar extends under my tricycle's back axle. The double tube was only needed because my 10mm bolts were too long. It was bolted onto the spider and needed lots of torque..

 

[CarolinaCrawler]

I removed the nut with the motor out by dropping a large hex key through the spider and motor mount bolt.

 

[pxl666]

i use this tool to hold the chainring

 

[luna87824]

Thanks to both.
View attachment 147052
Mission accomplished.
Now let´s see what else Bafang has it for me...

Is that your front or back door?

 

[Karamba!]

What?

Is that your front or back door?

 

[luna87824]

What?

It looks like your work bench, is a house door.....Correct?

 

[Karamba!]

It looks like your work bench, is a house door.....Correct?

Yeah, it was a door that my neighbor at the time disposed. They have a convenience store, that they renovated. There were a bunch of them but I could only grab one. It's 50mm plywood, and the best quality at it, perfect for my use. That's my luthier workshop by the way.