stupid ?

[cfield]

i feel like this is kinda stupid, but i must ask since i am new to operating a tractor- well all farm equip. I have a '53 ford jubilee. when i am bushogging, i go from reverse to forward and back numerous times. When I am switching gears, it almost always grinds. Am I trying to shift too fast? Or do I need to let the engine idle down first? I know the cluctch works great because it only happens when i am switching directions. Thanks for helping a newbie!

 

[whistlepig]

Do you have a over running clutch on the PTO?

 

[cfield]

talking about the clutch so that it doesnt force the tractor forward from momentum? if so. yes

 

[gwdixon]

Tractors that old generally don't have syncromesh transmissions.

whistlepig alludes to the probability that the rotation of the bush hog blade actually turns the transmission. When you clutch then the transmission continues to turn at high speed while the engine slows. That would make changing gears problematical.

An over-running clutch would allow the transmission to slow to more closely match the transmission speed and make the gears rotate at a more consistent speed. That would allow for less grinding.

Overrunning PTO Coupler, 1-1/8 in. x 6 Female Spline - Tractor Supply Online Store

Unfortunately, double-clutching will not help if the bush hog is driving the transmission.

You may get more informed answers on an antique tractor forum.

 

[GManBart]

i feel like this is kinda stupid, but i must ask since i am new to operating a tractor- well all farm equip. I have a '53 ford jubilee. when i am bushogging, i go from reverse to forward and back numerous times. When I am switching gears, it almost always grinds. Am I trying to shift too fast? Or do I need to let the engine idle down first? I know the cluctch works great because it only happens when i am switching directions. Thanks for helping a newbie!

I think the overrunning clutches like the one you describe help, but still transfer some energy to the tranny, which makes it take longer for them gear speeds to equalize. My 8N does exactly what you describe, but if you take the brush hog off, and put a blade or rake on, you can change directions without any gear grinding at all. R,

 

[whistlepig]

Buy an over running clutch. It will make life easier for you.

 

[2458n]

Have you not had the experience of having the clutch in and the bush hog slamming you into a tree.? This will make the choice for the over riding clutch. It is a simple piece that goes over the tractors PTO shaft.

 

[Stonehaller]

The transmission in a '53 ford jubilee is not synchronized. It is best to a complete stop before shifting from a forward gear to reverse.

 

[gwdixon]

For more input look at the reviews of the over-running clutch link posted in reply #4.

 

[Verticaltrx]

I too have a '53 Ford Jubilee that I sometimes bush hog with, so here's what I do. Mine has an over-running clutch (which based on post #3 it sounds like yours does too). Basically, you clutch fully, apply the brakes to come to a complete stop, then in one smooth swift movement shift from forward to reverse. Shifting too quickly isn't your problem, in fact that is what you need to do. Any time spent with the shifter in the neutral position (between gears) will cause the friction in the transmission to start the gears spinning and therefore grinding. Try it first between gears that are easy to get to from reverse. Also, the type of oil you are running in the transmission can have an effect on this.