Re: XYLOTEX VS GECKO DRIVE ??

Hi Dave,
I don't think Luis specified his voltage. If he *was* running at
30V or below, then yes, the Xylotex would probably be just as
effective (when using a good fan) as the Gecko, since they are both
microstepping bipolar drives (just as a pickup truck and a 18-wheeler
can both easily carry a bale of hay(see below)). 30V though, is at
the top end of the voltage rating for the Xylotex (and near the
bottom for the Geckos). A machine the size and weight of a Taig, I
beleive, it right at the limit of the present Xylotex three axis
drive capability (while maintaining quick feed rates), and Luis is
wondering (I think), is it too close to the edge.

So, Luis, what voltage were you using when you got your speed
ratings? Knowing this will allow a better evaluation of the question
at hand.

Jeff
http://www.xylotex.com

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
<davemucha@j...> wrote:

> I am not sure if this is exactly correct.
>
> if you have a small mill (sherline) and if you have small motors

and

> if you are running a 30 volt power supply.....
>
> then will one work better at 2 amps and 30 volts ?
>
> yes the Gecko can do 7 amps and 70 volts, but if you are running at
> 2amps/30V does one work better than another ?
>
> Dave
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "jeffalanp" <xylotex@h...>
> wrote:
> > Hi Luis,
> > Trying to compare the Xylotex drive with the Geckodrive is like
> > trying to compare a pickup truck with an 18-wheeler. They both

can

> > haul goods, but their capabilities are vastly different. With

the

> > Xylotex you get three axes capable of driving a small CNC mill

like

> a
> > Sherline or Taig. With a single Gecko, you can run an axis on a
> > Bridgeport. The typical power output the Xylotex is 24V-30V at
> upto
> > 2.5A (a fan is recomended). The Gecko can ouput 70V-80V at 7
> Amps.
> >
> > The Xylotex will get hot if you run it at full current and
> maximum
> > voltage, but, if you ran the Gecko at full current and maximum
> > voltage it would get hot too. The difference is that full

current

> > and maximum voltage for the Xylotex is a light load for the Gecko.
> >
> > I think the maximum motor size for the Xylotex drive is
> somewhere
> > in low to mid 200 oz./in. (200 to 250) range. The higher torque
> > required, the slower your high end speed will be. Some people

have

> > used 300 oz.in. motors with good results (although I don' know

what

> > their high end speed was).
> >
> > If your motor requirements are about 250 oz./in or less, then

the

> > Xylotex may be a good candidate for the job, otherwise you would

be

> > better off going with the Geckos. You will need to decide the

kind

> > of torque need for the job, the kinds of speeds needed, and then
> > choose an appropriate motor. Once this has been done you can

then

> > choose the drive capable of driving the motor.
> >
> > What it really comes down to is dollars and sense. Can the

Xylotex

> > do the job required (thus saving quite a bit of money), or are

you

> > going to have to continue saving up money to spring for the

Geckos?

> >
> >
> > Jeff
> > http://www.xylotex.com
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "luisguillermo98"
> > <luisguillermo98@y...> wrote:
> > > I have Gecko 210 with 2am steppers on an sherline, I can get 30
> to
> > 40
> > > ipm before loosing steps. I am wondering If I can get the same
> > speed
> > > with a Xylotex board on my new Taig?.
> > >
> > > Can someone tell me if Xylotex can work for long hours in a

daily

> > > base (8 hours/day)? or it gets hot easily?
> > >
> > > What type of stepper I can use for best result, amp, volt?
> > >
> > > what will be the fastest speed that Xylotex can achieve with

load

> > > (with slide table)?
> > >
> > >
> > >
> > > Luis..