Problem point

QUOTE (dwb @ 25 Oct 2008, 08:11) <{POST_SNAPBACK}>OK. I'm not sure I understand what you're doing. Is the solid black line with the right angle in it a solid piece of wire and you are using it to turn the movement through 90 degrees? If so, it's not how I would be inclined to do it as I would be worried that the wire would flex and there would be no movement at the point. I have never tried anything like this, it's just what I think might happen.

If you are trying to turn the motion through 90 degrees, I think you would be better to use an angle crank. That way all the force in the wires is along the longitudinal axes and thus not as liable to flexing with the result that you lose less motion from the motor.

Am I close?

David

Hi David,

I see your thinking now ....... realised i had drawn the motor wrongly here is a revised and more to scale diagram, the piano wire in short lengths shouldnt flex as i intend to put the motor as near as is practical, the meccano type fitting is ideal but too big do you see now how i would incorporate it in ?

*** Edwin ***

I thought of a peco motor but there just isnt the space ..... thank you for the suggestion though.

Good idea DWB took your advice with the chocolate block inner as can be seen, the frame got nipped with the drill being so near the edge.

and it works? Result

David

QUOTE (dwb @ 25 Oct 2008, 22:55) <{POST_SNAPBACK}>and it works? Result

David

Yes i've tested it works fine

I'm glad DWB it made your day did mine as well

QUOTE (Edwin @ 26 Oct 2008, 09:14) <{POST_SNAPBACK}>See what you mean about it being too close to the edge to use a Peco motor. I've got some more to do at some stage where this could well be an excellent solution.

It is a good solution Edwin, i omitted to say the piano wire is 18 gauge and the first photo in my post the wire had yet to be trimmed to length up to the point motor.
A modification may work even better shown below in the picture a second chocolate block insert and a thicker linkage from the motor would eliminate any flex that develops the wire going to the point more rigid in a shorter length, a drop of thread lock once all is lined up on the screws and your done

QUOTE the piano wire is 18 gauge

I don't suppose you know which note this wire would be used for? I can't relate to gauge measurements at all but I could go into the living room and poke the appropriate note. I wouldn't be allowed to remove it though; death would follow quickly

David

QUOTE (dwb @ 26 Oct 2008, 11:58) <{POST_SNAPBACK}>I don't suppose you know which note this wire would be used for? I can't relate to gauge measurements at all but I could go into the living room and poke the appropriate note. I wouldn't be allowed to remove it though; death would follow quickly

David

Hi David ,

Not sure which note it is never been the musically inclined sort all i know is it fits in peco n gauge point tie bars perfectly and its marked up in my piano wire stock tube as 18 gauge