Removing rear gear cogs?

[Fordulike]

Before I go ahead and buy the wrong tool for doing this job, could someone advise me what to buy please.

http://www.pedelecs.co.uk/forum/attachment.php?attachmentid=3368&d=1333108527&thumb=1&stc=1

It's looks like the end knurled bit screws on, as it has an arrow pointing clockwise on it with 'lock 40Nm' enscribed.

It also says SRAM.

 

[mike killay]

There are two types of socket, the one with the spike is for axles with quick release skewers, the other for solid axles.
You will also need a chain whip, do NOT be tempted to do without. 40nm is about 30 foot pounds so the locking ring will be on quite tight. It will aslos make an awful scraping sound when you undo it because it has teeth underneath it. Ignore this noise!
I suggest you look up u-tube, there are plenty of demostrations.

 

[Fordulike]

Can only find this type:

Super B Multi Freewheel Remover Shimano SRAM Sunrace | eBay

My rear wheel is the quick release type.
Does it really matter that the tool in the link doesn't have the spike mentioned by Mike?
Will it do the job?

 

[flecc]

There are two basic tools for solid axles, one for freewheel, one for cassettes. If it's a rear motor it's a freewheel and that tool is correct only for that. I'm sure you need a cassette version for a QR spindle

These look like the same thing but are slightly different from the freewheel removal tool:

Cassette removal tool

I'm not sure about whether the spike is needed for QR spindles though.

The advice on this webpage of mine is for a cassette on a solid spindle, but the removal principle is the same.

.

 

[Fordulike]

So do all hub motors use a freewheel type cogset?

and

If I bought a separate cogset suitable for a solid axle, then all I would need is the special tool and a chain thingy to complete the task?

I'm sure I'm trying to make this more difficult than it really is, sorry

 

[Fordulike]

OK, got it now, will check when hub motor arrives.

Freewheel or Cassette?

No more silly questions

 

[Scottyf]

So do all hub motors use a freewheel type cogset?

Majority do use a freewheel type. Which is one of the main gripes becasue you are only issued a set amount of gear sets that can be used. Often being a lower quality sprokets.
However the newer hubs that seem to be comnig into the market and more so over the next year are using the cassette type. This will give greater flexibility in gearing and also allow cheaper replacement if one cog is worn.

 

[flecc]

No problem. If its a hub motor it's very likely to use a freewheel, since hub motors generally have a 12 mm spindle that can't accept cassettes. Cassettes are designed for normal bikes which use 10 mm spindles.

However, I believe there are the odd exceptions, hub motors with 10 mm spindles which might use a cassette.

N.B. Crossed with Scotty's post.

 

[mike killay]

i don't think the spike is essential if you are careful, it is just to stop the socket canting over when pressure is applied. Using the smaller non spike socket, you can always insert the skewer.

 

[Fordulike]

I read somewhere, that all you need to do when fitting a screw on freewheel, is screw it on and hand tighten it.
The action of human power moving the chain against the freewheel, keeps it tight on the spindle.
In reality, no tools are needed to fit. Is this correct???

 

[Cyclezee]

That is more or less correct Fordulike, just be careful not to get the freewheel wrong threaded, then turn it until finger tight