[AT] 540 to 810 PTO Gearbox?

George Willer gwill at gwill.net
Wed May 21 10:31:00 PDT 2008


Will,

The gearing will reduce your torque but will have almost no effect on
horsepower because it increases speed accordingly.  Remember, Horsepower is
torque multiplied by speed.

I have no idea how to build a stump grinder.

George Willer

> -----Original Message-----
> From: at-bounces at lists.antique-tractor.com [mailto:at-
> bounces at lists.antique-tractor.com] On Behalf Of
> william.neff.powell at comcast.net
> Sent: Wednesday, May 21, 2008 1:07 PM
> To: Antique tractor email discussion group
> Subject: Re: [AT] 540 to 810 PTO Gearbox?
> 
> Charlie,
> 
> OK, 1 to 1.5 makes sense. Found this one at Northern Tool + Equipment:
> 
> 
> http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_2003315
> 16_200331516
> 
> Says 75hp which should cover anything I want to attach to it. Probably use
> my D17.
> 
> Stump grinders I have seen on-line say gearbox rated at 60hp, minimum hp
> needed is 22. I believe my D17 is 50 so I should be good.
> 
> If I ever start/finish it... I do have most of the pieces already,
> hydraulics, metal, pto shaft... Just need to think about flywheel and
> boucoup safety covers.
> 
> Regards,
> 
> Will
> 
> 
> 
> 
>  -------------- Original message ----------------------
> From: "charlie hill" <chill8 at suddenlink.net>
> > Will you need to step it up by 50% so you'll need a 1 to 1.5 step up
> box.
> > Be warned that you are cutting your torque way down so if the stump
> grinder
> > requires 30 hp you  might need a 50 or 60 HP tractor.
> >
> > Charlie
> >
> > ----- Original Message -----
> > From: <william.neff.powell at comcast.net>
> > To: "Antique tractor email discussion group" <at at lists.antique-
> tractor.com>
> > Sent: Wednesday, May 21, 2008 8:48 AM
> > Subject: [AT] 540 to 810 PTO Gearbox?
> >
> >
> > > Hello,
> > >
> > > Where can I find a 540 to 810 PTO Gearbox?
> > >
> > > Thinking about fabricating a stump grinder and that seems like the
> > > standard gearbox for the commercial 3pt PTO stump grinders.
> > >
> > > Regards,
> > >
> > > Will Powell
> > >
> > > _______________________________________________
> > > AT mailing list
> > > http://www.antique-tractor.com/mailman/listinfo/at
> >
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> 
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