Re: Timing pulley selection software

the 5mm gt2 15mm wide is the proper belt for the hp of treadmill
motors...I have gone through various speed and pulley ratios with
gates and the 5mm belt is always the best choice.

Wally

spent all day looking for specs for making cutter, nothing on gates
site, nothing on spi site...found full patent, very difficult to
understand.....

full patent here
http://patimg2.uspto.gov/.piw?
docid=US004515577&PageNum=1&&IDKey=5B99F2D2DCB2&HomeUrl=http://patft.u
spto
.gov/netacgi/nph-Parser?Sect1=PTO1%2526Sect2=HITOFF%2526d=PALL%
2526p=1%
2526u=/netahtml/srchnum.htm%2526r=1%2526f=G%2526l=50%
2526s1=4515577.WKU.%
2526OS=PN/4515577%2526RS=PN/4515577

or go here
http://www.uspto.gov/patft/index.html

and search for patent number 4515577


Wally

P.S. if anyone wants to show how smart they are look up the patent
and draw the cutter profile to make a 5mm pulley feel free.


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
<dave_mucha@y...> wrote:

>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "cnc_4_me" <cnc4me@g...>
> wrote:
> >
> > Well i would order belts from local bearing house, do not know of
> any
> > discount house.
> >
> > I would really only want to use PowerGrip GT2. I looked around

for

> a
> > few hours earlier for specs and could only find a sketch of

various

> > belt shapes for comparison with no dimensions.
> >
> > I think I found the patent here, but no dimensions.
> >
> > http://www.freepatentsonline.com/4403979.html?highlight=powergrip
> >
> > Any ideas were to find them…
> >
> > Wally
> >
> >
> >
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
> > <dave_mucha@y...> wrote:
> > >
> > > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "cnc_4_me"

<cnc4me@g...>

> > > wrote:
> > > >
> > > > >
> > > > > I sent a request to a custome milling cutter grinder guy to
> see
> > > how
> > > > > much it would cost to get a milling cutter to make a belt
> > > grouve.
> > > > > then it would be a matter of just turning the OD and

milling

> > the
> > > > > slots.
> > > > >
> > > >
> > > >
> > > >
> > > > I am very interested in your findings, I was thinking of

doing

> > the
> > > > same thing.
> > > >
> > > > The information I gathered on pulleys is the only two to
> consider
> > > are
> > > > HTD and power grip GT2. Of these types GT2 has almost 2x the
> hp
> > > > rating for same size belt. And GT2 has much less backlash.

If

> > you
> > > > want HTD for some reason then you would make the trough in

the

> > > > pulley .004" higher than spec to reduce backlash (per gates).
> > > >
> > > > I have not gotten to the point of finding the exact specs and
> > > > dimensions for the cutter for these pulleys and do not know

if

> > they
> > > > are published….Also if this gets figured out maybe we could
> split
> > > the
> > > > cost if more than 1 cutter cost less money…
> > > >
> > > > Wally
> > >
>
>
> I spoke to a Gates tech and he offered a link to the Gates site.
> Here you can request a copy of the program that will help in
> selection of the belts.
>
> In my case, I'm starting out with a high speed, 5,400 RPM treadmill
> motor, and reducing it down to a plasma table that can

theoretically

> do 500 ipm.
>
> http://www.gates.com/dfcampaign/index.cfm?go=btgtsdf1103
>
> Dave