Planetary Hubs?

I've been lurking the forums since I bought my '51 8N a couple of years ago. (Her name's Suzabelle, BTW).

Big Thanks go out to all everyone who's posted, helping me keep her healthy and happy so far!

Anyways, I was out mowing the lawn, letting my mind do it's rambly thing, and out popped the question: Has anyone ever tried finding/building/using planetary hubs to slow the tractor's ground speed while allowing full RPMs for the hydro and PTO?

Thanks!

Nick
 
I've never tried it, but I think it would cost too much to make.
Unless there are some off another tractor that could be made
to fit and work.

Glad you're enjoying the old tractor.
I was out doing some loader work with my Jubilee this morning.
Quite enjoyable until the rain rolled in! LOL
 
With enough money and/or time, many things are possible.

I know of no one who has done this (aside from manufactorers) but it could be done.

Most folks, simply sell their tractor and buy a more suitable replacement.

If you are the type who wants to do this because it has not yet been done by others, look to MF for outboard mounted planetary reduction units to adapt to your N.

Dean
 

Planetaries would definitely be a "fun" project, not really a "productive" one...

Sell a tractor?? Doubt it! I already prepped the wife for the stable of old Fords that'll start appearing once the pole barn is complete! :)
 
If you want a guide, take a look at the
rear axles from a 1965-75 3 cylinder 4000.
Those have planetaries in the trumpet,
Along with wet disc brakes.
Ultimately, though it's fun to invent
things, you'd be better off to look for a
newer tractor.
A 3000 with tiller/snowblower capable 8
speed will slow you down enough for most
any purpose.
Plus you'll get other features like live
hydraulics, live pto, power steering,
differential lock, remote hyd valves, more
power, more longevity, gas or diesel.
Think of one as an N to the Nth degree.
 
Dell you know better. A Sherman will increase or decrease the PTO speed. Now a Howard on the other hand will do what he wants
 
The Sherman Aux will not due it since it will increase and or decrease PTO speed but there was a Howard Aux transmission that would do that but they are hard to find. And yes some one with enough $$ and skills could in fact make something that would do that but by the time it was done it would most likely be cheaper to buy a tractor that had the slower gearing
 
(quoted from post at 13:45:17 09/19/15) I've been lurking the forums since I bought my '51 8N a couple of years ago. (Her name's Suzabelle, BTW).

Big Thanks go out to all everyone who's posted, helping me keep her healthy and happy so far!

Anyways, I was out mowing the lawn, letting my mind do it's rambly thing, and out popped the question: Has anyone ever tried finding/building/using planetary hubs to slow the tractor's ground speed while allowing full RPMs for the hydro and PTO?

Thanks!

Nick
o - but maybe something like a shiftable 3.5:1 planetary speed reducer behind the transmission could be built if one were handy with machine tools. Sort of a improved Howard auxiliary transmission. Of course nobody in their right mind would waste their time or money on something like that ;-)

TOH

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(quoted from post at 19:52:45 09/19/15)
(quoted from post at 13:45:17 09/19/15) I've been lurking the forums since I bought my '51 8N a couple of years ago. (Her name's Suzabelle, BTW).

Big Thanks go out to all everyone who's posted, helping me keep her healthy and happy so far!

Anyways, I was out mowing the lawn, letting my mind do it's rambly thing, and out popped the question: Has anyone ever tried finding/building/using planetary hubs to slow the tractor's ground speed while allowing full RPMs for the hydro and PTO?

Thanks!

Nick
o - but maybe something like a shiftable 3.5:1 planetary speed reducer behind the transmission could be built if one were handy with machine tools. Sort of a improved Howard auxiliary transmission. Of course nobody in their right mind would waste their time or money on something like that ;-)

TOH

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IMG_1292.jpg


IMG_1291.jpg


IMG_0878.jpg
I saw these before when you were working on them.
Seemed like a great idea! Are they for sale now?
 
That is really great!

I have thought of doing something like it at one of the rear wheels. Easier to install.

Make one Old.

Zane
 
(quoted from post at 17:57:12 09/19/15)
I have thought of doing something like it at one of the rear wheels. Easier to install.

That was the point that brought me to thinking about hubs - I'm not quite experienced or talented enough (yet!) to split Suzabelle's block for transmission work!
 
(quoted from post at 23:35:06 09/19/15) Did you get that idea from a Model T transmission? At least it reminds me of the planetary in one.

No - I got the idea from Howard - that is what they did on the NAA and later tractors (see picture). My inital attempt was to re-purpose the planetaries from a Ford C3 automatic. They are cheap and readily available. But it turns out they were too small to accept the transmission output shaft so I decided to roll my own. More fun, an excuse to buy a whole bunch of tooling, and a real learning experience ;-)

TOH

f248_1_b.jpg
 
(quoted from post at 20:57:12 09/19/15) That is really great!

I have thought of doing something like it at one of the rear wheels. Easier to install.

Make one Old.

Zane

It's on my bucket list Zane. But I am still a "young" man with lot's of things on that list and there's a ton of time left - I hope :roll:

TOH
 
(quoted from post at 21:03:52 09/19/15)
(quoted from post at 17:57:12 09/19/15)
I have thought of doing something like it at one of the rear wheels. Easier to install.

That was the point that brought me to thinking about hubs - I'm not quite experienced or talented enough (yet!) to split Suzabelle's block for transmission work!

Planetary or spur gear reduction on rear axles is pretty common in modern tractors. My Kubota uses a simple straight cut spur gear reduction on the outer axles - a lot simpkler to build than planateries.

The downside to reducing the axle speed is that it is a "full time" arrangement and you wind up trading your "too fast" tractor for one that is "too slow". That's why most modern tractors combine the reduction axles with a two speed rear end.

TOH
 
(quoted from post at 05:27:09 09/20/15)
(quoted from post at 21:03:52 09/19/15)
(quoted from post at 17:57:12 09/19/15)
I have thought of doing something like it at one of the rear wheels. Easier to install.

That was the point that brought me to thinking about hubs - I'm not quite experienced or talented enough (yet!) to split Suzabelle's block for transmission work!

Planetary or spur gear reduction on rear axles is pretty common in modern tractors. My Kubota uses a simple straight cut spur gear reduction on the outer axles - a lot simpkler to build than planateries.

The downside to reducing the axle speed is that it is a "full time" arrangement and you wind up trading your "too fast" tractor for one that is "too slow". That's why most modern tractors combine the reduction axles with a two speed rear end.

TOH

Yep. In my particular case, a "full time" arrangement suits me, because I rarely get out of first or second gear. In fact, third and fourth are too fast 99% of the time.
 
(quoted from post at 19:52:45 09/19/15)
(quoted from post at 13:45:17 09/19/15) I've been lurking the forums since I bought my '51 8N a couple of years ago. (Her name's Suzabelle, BTW).

Big Thanks go out to all everyone who's posted, helping me keep her healthy and happy so far!

Anyways, I was out mowing the lawn, letting my mind do it's rambly thing, and out popped the question: Has anyone ever tried finding/building/using planetary hubs to slow the tractor's ground speed while allowing full RPMs for the hydro and PTO?

Thanks!

Nick
o - but maybe something like a shiftable 3.5:1 planetary speed reducer behind the transmission could be built if one were handy with machine tools. Sort of a improved Howard auxiliary transmission. Of course nobody in their right mind would waste their time or money on something like that ;-)

TOH

IMG_1280.jpg


IMG_1292.jpg


IMG_1291.jpg


IMG_0878.jpg

I'm still waiting for the debut of the "Hokie Pokie". Then I'd have to buy a tiller and and actually plant a garden to justify it.
 

I agree, ScoutB - If'n I got my hands on a "Hokie Pokey"; I'd have the perfect excuse for some quality tinkerin' time!

So, TOH, how much will this "theoretical" kit set us back? :)
 
(quoted from post at 20:04:55 09/23/15)
I agree, ScoutB - If'n I got my hands on a "Hokie Pokey"; I'd have the perfect excuse for some quality tinkerin' time!

So, TOH, how much will this "theoretical" kit set us back? :)

More than a decent 8N is worth ;-)

TOH

PS> I have the basic makings for five ....
 
(quoted from post at 17:11:53 09/23/15)
(quoted from post at 20:04:55 09/23/15)
I agree, ScoutB - If'n I got my hands on a "Hokie Pokey"; I'd have the perfect excuse for some quality tinkerin' time!

So, TOH, how much will this "theoretical" kit set us back? :)

More than a decent 8N is worth ;-)

TOH

PS> I have the basic makings for five ....

Let's see... by the time I learn machining, gear cutting, etc. and acquire the tools and equipment necessary, I would definitely have spent more than the cost of several decent 8Ns... with implements!! :)

Sooo, if the basic makings happen to get made; I hope to offer a set of them a good home!
 

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