Thread: Waldown Intermediate Pulley Eccentric Mount Photos

Waldown call the mount an intermediate drive block ( part no 104419 ).

Joe asked for a few photos of the pulley mount that I have on my 3M and my garden shed beater drill so here's the 3M's. Might be of use to someone else. Who knows

Bob, thanks for the pics, if I need something like that I'll now know how to do it.
Kryn

Originally Posted by KBs PensNmore

Bob, thanks for the pics, if I need something like that I'll now know how to do it.
Kryn

And thank you for the reply Kryn. It makes posting the photos worthwhile.

Bob.

Thanks a lot Bob! I got them by your e-mail as well.
That is how I imagined it would look - glad I wasn't way off track. Just have to figure out the bearing arrangement and my pulley. The locking mechanism is nothing like I would have thought.
Cheers!

Yes thanks for the pics Bob. I've never managed to get mine apart. What engages the large groove in the bottom of the eccentric? Presumably that is what retains the assembly.

The two motor mount pins run through the bore for the column. The groove both accommodates them and provides a positive stop for the eccentric. It means the motor mount has to be pulled almost completely out of the drill body to get the eccentric out. Quite clever I think...

Diabolical. Thanks Joe.

Looks like my home-made version will require a revision because my designated intermediate pulley doesn't have enough 'meat' in the casting to accommodate any bearings. I will need to fit the bearings into the eccenter part and have the spindle run with the pulley attached. I have an idea I can make that work.

Originally Posted by Bryan

Yes thanks for the pics Bob. I've never managed to get mine apart. What engages the large groove in the bottom of the eccentric? Presumably that is what retains the assembly.

Interestingly Bryan, on my beefier 3M, gravity holds the mount in place. The 3M has the motor mounted on a hinged, over centre operated mounting plate. In my mind a particularly stylish and well resolved alternative to the sliding bar mount on the 8SN and my beater.

Bob.

Hi Bob

Let me get this right...

the intermediate drive block just sits in the column?

what is purpose of brass pin (drive plunger) and the drive handle?

Originally Posted by eskimo

Hi Bob

Let me get this right...

the intermediate drive block just sits in the column?

what is purpose of brass pin (drive plunger) and the drive handle?

Hello Richard,

Yes, the eccentric block sits in the column and the handle with it's brass plug simply locks the block in position. You might be thinking that the belts would position the pulley and the eccentric but the handle enables the tensioning of the spindle belt with subsequent locking after which the motor belt can be tensioned.

Bob.

Originally Posted by Anorak Bob

It simply locks the eccentric in position Richard. You might be thinking that the belts would position the pulley and the eccentric but the handle enables the tensioning of the spindle belt with subsequent locking after which the motor belt can be tensioned.

Bob.

thanks Bob

Joe
I see that you made an intermediate pulley for your 8sn

the column on mine appears to have an internal seam. Did yours?, and did you do anything to compensate or bore the column?.
or shouldnt I worry about an intermediate?

Hi Joe...I'll start again...the column doesnt go all the way up duh...

Did you just knock out the steel cap and just drop the block into the casting as the 3m series?...or did you do something different?

Originally Posted by Anorak Bob

The eccentric block sits in the column and the handle with it's brass plug simply locks the block in position. You might be thinking that the belts would position the pulley and the eccentric but the handle enables the tensioning of the spindle belt with subsequent locking after which the motor belt can be tensioned.

I have that mechanism on mine, so if you want to see one in the flesh let me know.

Michael