Re: [ATM] Got Stiction?

[GARY FUCHS <gary@rcn.com>]

Thanks Don! It looks like a neat idea.



>Gary,
>>
>The idea is to tighten the screws in the oversize membrane 
after aligning
>the worm to wheel. The flexure or membrane does "flex"  a 
very small amount
>allowing  for  small radial  variations of the wheel. The flexure 
is more
>rigid in the tangent direction. This simple worm mount does 
work extremely
>well.
>
>
>
>Don Clement
>
>Running Springs, California
>
>>
>> Don (or anyone else)
>>
>> I've been looking at the picture and explanation for a couple 
of
>> days now trying to make sense of it.
>>
>> Is "B" attached firmly to the pedestal "E", but only loosely to 
the
>> motor mounting plate "A"? ("by making the screw holes in 
the
>> membrane slightly oversize")
>>
>> Is it correct that "B" is angled somewhat towards the wheel? 
If
>> so, what is the advantage over using a spring pushing "A"
>> towards the wheel, or pulling it that way?
>>
>> Is it correct that the entire motor assembly is attached to the
>> base only by the pedestal "E"?
>>
>> Thank you,
>>
>> Gary Fuchs
>>
>>
>>
>> >
>> >"Richard  wrote:>  As usual, the old guys who believe in 
the
>> books from the
>> >year> Hitler was elected will poo-poo the idea, but in the 
end
>> the neo->
>> >Dobsonions will prevail. The idea of using flexural bearings 
is
>> not new to
>> >ATM world. In ATMbook two (original volumes)
>> p373  "Springfield Mounting" by
>> >RussellW. Porter, Figure 2  shows the flexure mounting of a
>> worm.
>> 
>http://i72.photobucket.com/albums/i163/miltons_stuff/ATMflex
>> ure_worm.jpg
>> >Porter writes:"Figure 2 is a schematic representation of a
>> clever and
>> >highlypractical device for taking the backlash out of the 
main
>> worm
>> >andwheel. It is due, so far as I know, to Chapman, of
>> Riverside,California.
>> >Several amateurs in southern California have adopted
>> theidea. It consists of
>> >mounting the entire motor and worm unit on amembrane 
B,
>> made from thin
>> >flexible metal, such as spring bronze. Thepedestal E can 
be so
>> adjusted  on
>> >the base casting as to flex themembrane sufficiently to 
assure
>> ample
>> >pressure of the worm againstthe wheel. The worm should 
be
>> properly adjusted
>> >to mesh with theteeth of the wheel, by making the screw 
holes
>> in the
>> >membraneslightly oversize. Really this membrane support 
for
>> the main worm
>> >isa godsend for removing all looseness and consequent
>> backlash due towear,
>> >and providing a  constant pressure."   Don Clement  
Running
>> Springs,
>> >California
>> >
>> >_______________________________________________
>> >ATM mailing list http://www.atmlist.net/
>> _______________________________________________
>> ATM mailing list http://www.atmlist.net/
>
>_______________________________________________
>ATM mailing list http://www.atmlist.net/
_______________________________________________
ATM mailing list http://www.atmlist.net/