Quote:
Originally Posted by cashflyer
I meant 8N - not 9N.
Wiki says that the 8 still does not have "live" PTO, though.
Live PTO was optional on the NAA, according to Wiki, and it says that they hydraulics were better on the NAA.
|
Without rambling on about these Fords in particular, having live PTO is a big plus especially for mowers.
In a live PTO, there's a dual clutch. Half pedal releases the trans and full depress releases the PTO.
As an example, if you have a large rotary cutter (Bush Hog trade name) on a 9 or 8N (no live PTO on them) and your moving along while the PTO / mower is spinning, you suddenly want to stop so naturally one depresses the clutch and brakes. BUT, the enertia from the rotary cutter will still be turning and right thru the trans. to the diff. pinion, thereby 'pushing' you and much harder to stop.
Another example on these early non-live PTO is when running a pump off the back for an old loader. The moment you de-press the clutch you lose hydraulics to raise the loader. Same situation if you even tap off the tractors internal pump. (BTW- pump is low vol. and slooow). To alleviate that problem most 9 or 8N owners with loaders will run a pump off the front with a shaft coupler direct to the crankshaft pulley.
Bottom line is how easy do you want to work with the machinery to get the job done and least expense? An old Ford (flat head 9,2, 8N or overhead valve NAA) can still dig and move dirt, mow weeds and grass but its no hydrostatic, zero turning radius, push button pull lever operation. However they win in pure American tractor nostalgia, all have a common standard category three pt. hitch for unlimited implements - (new or used), parts are and will be around forever.