Of 2200 ratchet

[narrowboatboy]

I've had 2 Of 2200's and the ratchet only functions when the collet is tight, so that bit between cracking from fully tight to the second bite the ratchet doesn't do anything and I have to hand turn it until gets to a tight enough grip,

now the other day when taking out a bit and it griped all the way as i would have thought it would have been designed, but my previous machine and this one have never done so I just thought that was how they was made.

has  anybody else had these symptoms

 

[tjbnwi]

The collet is a 2 step, first loosen then eject, mine works as you first describe.

Tom

 

[Stone Message]

I occasionally get the ratchet to work all the way through the bit removal process and I think it is a matter of a rapid twist with the wrench just as it is done with the first tight part.

I do not see this as an issue as one cannot expect a ratchet to work when there is no reverse friction. The two stage collets are brilliant and that tiny in between part is no big deal.

I will see if I can catch the process on video.

Peter

 

[narrowboatboy]

i would have thought a fiction brake on shaft while lever is pressed would have been all that is needed if not already in place

 

[Bohdan]

There is a rubber O ring inside the collet assembly that is supposed to supply the friction to enable the ratchet to work but I have found that this doesn't always supply enough friction for the ratchet.

 

[Mbconstructionjoinery]

Mine works as you first described both on my of2200 and 0f1400

 

[Stone Message]

Rather than changing my post above let me update what I said.

I have just filmed the process with the OF2200 and will publish it in the next few days. I had absolutely not problems at all and I just kept using the spanner with my finger on the ratchet lock and took it through both stages of the bit removal process. I have in the past had the odd time when I have had to cover the intermediate loose stage by turning with my finger as the ratchet did not bite but now I cannot reproduce that.

I have not checked my OF1400 in case I am miss remembering which tool was like that.

Peter

 

[Stone Message]

Hi Everyone

After the question posed by the OP I added an explanation about collets and my own experience to my latest Workshop Notes video. Here is the link:


Peter

 

[DzordanoBruno]

Brilliant video Peter! Iam Your big fan!

 

[Rick Christopherson]

There is no such thing as a "2-stage collet". This is a common misconception for a captivated collet nut. The initial loosening is just the loosening of the screw threads, and the second loosening is just the nut pulling the mating tapers apart. It isn't any sort of special feature. It is just a matter of how the parts get pulled apart.

 

[Stone Message]

There is no such thing as a "2-stage collet". This is a common misconception for a captivated collet nut. The initial loosening is just the loosening of the screw threads, and the second loosening is just the nut pulling the mating tapers apart. It isn't any sort of special feature. It is just a matter of how the parts get pulled apart.

I understand completely but it is a simple explanation of the process which is also reflected in the diagrams in the video. Not all collet nuts have the loosening action on the taper and for that reason I think the description is apt.

Peter

 

[Tinker]

Peter, a fantastic presentation as per your usual habit.

I have the OF 1400 mounted in my CMS.  The ratchet has never failed me while tightening the collet.  It does, however, cease to work as expected sometimes while loosening the collet.  When it refuses to work properly, i must use two wrenches all the way.  If it decides to work properly, it will continue to operate flawlessly all the way until i can remove the bit.  Since it is only a sometimes do and sometimes don't sort of inconvenience, i just don't worry about it. I just assume there is a piece of dust in the threads and after I am finished with the setup, i blow out the collet and do a general cleanup of the router and table.

Tinker

 

[Stone Message]

Hi Tinker

Many thanks for the kind words.

I feel a bit embarrassed as I do have a router that needs help and I thought it was my OF2200 as I use it a lot in the CMS unit. When I checked it and found it was fine I thought, silly me it must be the OF1400. Just before lunch today I  decided to get to the bottom of this and discovered it is my CMT (Dewalt 625 clone).

Peter

 

[Tinker]

Peter, The Wee-Ones have been trying to straighten you out. [wink]
Tinker

 

[Bohdan]

Just before lunch today I  decided to get to the bottom of this and discovered it is my CMT (Dewalt 625 clone).

Peter

If they haven't changed the design since it was an ELU then you will find that the festool collets may fit the CMT.

 

[Stone Message]

Just before lunch today I  decided to get to the bottom of this and discovered it is my CMT (Dewalt 625 clone).

Peter

If they haven't changed the design since it was an ELU then you will find that the festool collets may fit the CMT.

That is really useful information - many thanks.

Peter