PSN-L Email List Message

Subject: Re: Vertical Sensor
From: ChrisAtUpw@.......
Date: Tue, 12 Dec 2006 12:06:44 EST


In a message dated 2006/12/12, tchannel@.............. writes:

> Chris,  By "an opinion" I guess I was thinking about the best hinge to use. 
>  I have seen fishing line, thin metal hinges, wire hinges and knife points.
> I know I would need lateral stability, so the arm would not bob side to 
> side, but I also know it would need to have minimal friction.
> On the AS1 it looks as if they just use a wide knife point approach.   
> Thanks, Ted

Hi Ted,

       I suggest that you DON'T use point in a cup, knife edge, or fishing 
line.

       Cardan type metal foil or wire, crossed metal foil or wires, ball on a 
plane, crossed cylinders, rolling metal foil or wires all work OK in that 
order.
       On the LPVERTO or STM8 you need crossed foils. If you are using an AS1 
type, a pair of crossed cylinders would be fine, alternatively pairs of 
Cardan foils or wires.
       Cardan type is a single short flexing element in tension.
       Hope that this helps.

       Regards,

       Chris Chapman
In a me=
ssage dated 2006/12/12, tchannel@.............. writes:

Chris,  By "an opinion" I=20= guess I was thinking about the best hinge to use.  I have seen fishing=20= line, thin metal hinges, wire hinges and knife points.
I know I would need lateral stability, so the arm would not bob side to sid= e, but I also know it would need to have minimal friction.
On the AS1 it looks as if they just use a wide knife point approach. &= nbsp; Thanks, Ted


Hi Ted,

       I suggest that you DON'T use point in a= cup, knife edge, or fishing line.

       Cardan type metal foil or wire, crossed= metal foil or wires, ball on a plane, crossed cylinders, rolling metal foil= or wires all work OK in that order.
       On the LPVERTO or STM8 you need crossed= foils. If you are using an AS1 type, a pair of crossed cylinders would be f= ine, alternatively pairs of Cardan foils or wires.
       Cardan type is a single short flexing e= lement in tension.
       Hope that this helps.

       Regards,

       Chris Chapman

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