Fabbing a FH drive shaft PTO splined yoke

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Willy
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby Willy » Fri Jun 01, 2018 9:10 am

I had been looking at the Hub City PTO shaft sleeve adapters last fall and all of a sudden I quit finding them. I accidentally found one looking for something else at one of the antique tractor parts websites and decided to get it while I could. I haven't seen another one since and that site quit showing them shortly after I got mine.
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby mva1958 » Fri Jun 01, 2018 10:10 am

Willy wrote:I had been looking at the Hub City PTO shaft sleeve adapters last fall and all of a sudden I quit finding them. I accidentally found one looking for something else at one of the antique tractor parts websites and decided to get it while I could. I haven't seen another one since and that site quit showing them shortly after I got mine.


Ag and Farm Supply lists one for $38, kind of pricey I think. Hub City still shows it on their products lists so it's not an obsolete item (yet).

https://agandfarmsupply.com/product/splined-sleeve-3/
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby inairam » Fri Jun 01, 2018 10:29 am

Matt Kirsch wrote:The Woods mower uses the same Weasler 6 Series PTO components as the Mott mower, so it should fit right on. I've had both mowers at different times.

The parts are the same for 540 and 1700 RPM. If it was a problem, Dave wouldn't be here to post about it, LOL.

Per Fedex tracking, the yoke I ordered from PaulB Parts should be delivered today. I know it will fit the PTO shaft, but I'm not sure if it will secure to the shaft as-is. In order to use it you may need to modify the yoke, or modify the Cub PTO shaft.



Matt can you post pictures and part numbers. I need a shaft as well.
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby Matt Kirsch » Fri Jun 01, 2018 12:54 pm

Do you need the shaft or the 10-spline yoke? If your yoke is usable, you can get the shaft parts at Tractor Supply. It's all standard Weasler 6 Series parts, including the 10-spine yoke. The only difference is the yoke was discontinued decades ago when Woods and Mott stopped making FH mowers for Cubs.

Everything's over in mva1958's thread in the vine. IIRC the Weasler part for the yoke is 105-0610. The shafts and crosses are shelf items at Tractor supply.

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Re: Fabbing a FH drive shaft PTO splined yoke

Postby inairam » Fri Jun 01, 2018 2:48 pm

let us know if the yoke works.
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby mva1958 » Fri Jun 01, 2018 4:00 pm

I ordered the yoke&tube/cross from Mills Fleet Farm, was about $20 cheaper shipped than TSC's cost off the shelf. Time isn't a factor; I have to wait for the NOS Woods PTO yoke to show up. I ordered two cross bearings so I'll have one on hand when I have to replace the one on the mower end of the shaft.

https://www.fleetfarm.com/detail/weasle ... 06%20cross

https://www.fleetfarm.com/detail/weasle ... oke%20tube
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby Matt Kirsch » Mon Jun 04, 2018 6:26 pm

It fits the Cub PTO shaft. Unfortunately, it will not lock on because the holes and the balls do not line up. The holes on the Cub PTO shaft are in the slots, as are the balls in the yoke.

However, I believe it would be fairly simple to set this up in a mill/drill and cross drill it for a cotter pin if it's not overly hardened. The locking ring and spring come off easy enough.

20180604_183314.jpg

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Re: Fabbing a FH drive shaft PTO splined yoke

Postby Rick Prentice » Tue Jun 05, 2018 9:46 am

Back in the beginning stages of the cub dyno, I bought a standard type pto shaft with the square style shaft and tube from Wood County Implement and placed the correct Woods yoke on it for the cub splines. Everything worked well for most of the cubs tested until a couple cubs were hooked up that had either no governors ( Ralph's Flamey @ 4000 and a couple others less). The shaft handled the standard rpm cubs ok, soon as over 2000 rpms developed, the pto shaft started vibrating bad and we shut things down. I ended up having a balanced shaft made with automotive style tubes and slip joint. Steve would know if the shaft is still good. He now owns the dyno.
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby inairam » Thu Jun 14, 2018 10:09 am

Thank you for this post. I have to try to find a shaft on and off for a year. This post got me started again.

What I did was purchase a Hub City 0332-00355 PTO adapter to take the 10 spline to a 6 spline.

I also purchased from paulB parts a Weasler Yoke 6 series 1 3/8" 6 spline yokes with spring lock. I put 4 dimples in the Hub city adapter and the yokes lock to the adapter. The shafts are square like the original and have to be cut after I fit up the mott mower to the back of the tractor.

You could put the dimples on the PTO shaft and get the 10 spline yoke and not use the adapter. I just did not think I could do that with my skills and I did not have a good spare PTO shaft. The one in the pictures is shot on the clutch end.
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby Rick Prentice » Fri Jun 15, 2018 8:15 am

You'll want to be very careful and cautious with your setup. Remember the custom ground pin needed to lock the adapter onto the pto shaft, and an immediate red flag for me was the holes drilled through the "meat" of the adapter. Under load or full rpm's, I can foresee the adapter breaking apart at those newly drilled holes. The quick yoke needed to be slid on farther to have more surface contact. Sorry to be the bearer of negative news. Be careful!
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby inairam » Fri Jun 15, 2018 11:14 am

Rick

I am also very concerned about the adapter. I am just more concerned about the yoke not locking.

About 40% of the adapter is fully engaged on the shaft and yoke in from the hole.

I am thinking about cuttin a chamfer in the ID splines so the adapter can be reversed and still line up with he hole in the PTO shaft with will allow for more engagement of the adapter and the yoke.

I will post when I get the mott mower hooked up and again when I get some hours on it.
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby Rick Prentice » Fri Jun 15, 2018 6:18 pm

The new holes you drilled really should've been located forwards of the Cub pto shaft hole instead of behind it for safety concerns. Now you could turn the adapter around only if you cut off the extra adapter length. You should feel the new yoke snap into place if you drilled the holes correctly. Once the balls drop into the adapter holes you drilled, the outer collar will click into place and lock things. Did you make the special pin to hold the adapter onto the Cub pto shaft yet?
When I told my dad I've been misplacing things and doing stupid stuff----His reply---"It only gets better"

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Re: Fabbing a FH drive shaft PTO splined yoke

Postby inairam » Fri Jun 15, 2018 7:17 pm

the hole is not in the center and without chamfering the ID splines the adapter does not go on the other way and line up with the hole. I also wanted the dimple holes for the yoke to be as far from the pinhole as I could. The yoke does snap/ lock in place. If I chamfer to ID splines it will turn around and the hole will line up with the PTO shaft and the yoke will fit and move forward.

The whole thing is a compromise. Not my proudest work. Will see how it works and holds up. Maybe it would have been better to take some material with a lathe to make a grove.

I did not do the pin yet. From other posts I thought it was a standard roll pin. Do you have a picture of the "special pin"?
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby pickerandsinger » Sat Jun 16, 2018 4:44 am

This is a great post to follow...No bull crap just a couple of guys working on solving a legitimate problem...Very productive and interesting...Dave.... :tractor: :hattip:
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Rick Prentice
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Re: Fabbing a FH drive shaft PTO splined yoke

Postby Rick Prentice » Sat Jun 16, 2018 7:26 am

the hole is not in the center and without chamfering the ID splines the adapter does not go on the other way and line up with the hole
that's why I suggested
Now you could turn the adapter around only if you cut off the extra adapter length


The special pin is nothing more than a custom ground "drill bit shank" or "roll pin" or "bolt shank" ground down to the proper length long enough to stick out both sides of the Cub pto shaft to catch on the adapter(both sides). Just make sure it's as wide as possible so it can't shift to one side, meaning it'll only be holding one side. It can't be too wide because the new yoke won't slide on if it is.You can insert the pin through the adapter and then "snap" the new yoke on and it will keep the special pin in place and keep the adapter from sliding off.

A fast spinning pto shaft that comes lose makes for a bad day. From my own personal experience, the adapter the way you have it mounted will fail. Sorry, my .02.

Rick
When I told my dad I've been misplacing things and doing stupid stuff----His reply---"It only gets better"


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