[AT] Now: PTO to Trailer

[Herbert Metz]

If they had included a truck transmission (or two), this would have
provided a variety of gearing from starting from standstill to fifty plus. 
Herb


> [Original Message]
> From: Francis Robinson <robinson at svs.net>
> To: Antique tractor email discussion group <at at lists.antique-tractor.com>
> Date: 1/3/2008 11:33:32 PM
> Subject: Re: [AT] Now: PTO to Trailer
>
>
>
> --On Thursday, January 03, 2008 9:11 PM -0600 oldiron62 at gmail.com wrote:
>
> >
> > ----- Original Message -----
> > From: "Gene Dotson" <gdotsly at watchtv.net>
> > To: "Antique tractor email discussion group"
> > <at at lists.antique-tractor.com> Sent: Thursday, January 03, 2008 3:51 PM
> > Subject: Re: [AT] Now: PTO to Trailer
> >
> >
> >>    You all need to do some refiguring on the speeds this tractor would
> >> travel. PTO speed is only 550 rpm and with a direct drive to the rear
> >> axle on the trailer would be the same. A 50's Chevy six cylinder would
> >> turn  about
> >> 2800 rpm to go 50 mph with a 4.33 ratio, so, 550 devided by 2800 gives
> >> approximately 20 percent of the speed of the truck or about 10 mph.
> >> Bigger tires or a higher ratio may bring it to 15 mph. Not an
> >> unreasonable speed, even way back when.
> >>    Course, maybe he had another transmission mounted backward for
> >> overdrive, then all bets are off.
> >>
> >>                            Gene
> >
.........................................................................
> > ......
> >
> > The tractor that I was reffering to 880 Oliver has the pto shaft running
> > to  a roller chain sprocket.  That runs the driveshaft below it, and the
> > sprockets change the gear ratio to where the tractor really has to work
> > when  bumped out of HI. Then the PTO engaged and on but from a dead stop
> > it  wouldnt move. The thing is geared to fly but only on good straight
> > roads. I know they followed it doing 50+ mph.
> > Myself would be afraid of any type hill that would surley be on the way.
> > It  would be fun shifting back into gear 1/2 way up a big hill :-)
> > No overrunning clutch, the engine is part of the braking system.
> >
> > Kevin
> >
> > _______________________________________________
>
>
>
>
> 	If the tractor was not started moving by the tractor being in gear I
would 
> think the trailer wheels would do a lot of slipping unless it was
somewhat 
> loaded. I have had a couple of pick-up rear end trailers (still have a 
> small one) and there is not a lot of weight there. The cab, transmission, 
> driver (some of us more than others) etc. all add a good bit of weight to 
> the rear axle of a pick-up truck.
>
> 	If the unit has lights it will want a ground...   ;-)
>
>
>
> --
> "farmer"
>
>
> Francis Robinson
> Central Indiana, USA
> Robinson at svs.net
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