[AT] Now: PTO to Trailer

[Francis Robinson]

--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