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WD or WD45 2-speed range box

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DrAllis View Drop Down
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    Posted: 21 Feb 2016 at 6:47pm
Hopefully the photo will follow this thread. This was my Winter project, a 2-speed range transmission located inside where the hand clutch and PTO gears used to be located. I set this one up as a 15% under-drive. This places low 3rd and low 2nd half-way in-between normal direct drive speeds. Essentially, it makes the tractor 8-speeds, four direct-drive and four under-drive. It could be made into an over-drive if desired. Totally enclosed and nothing exposed. I'd be interested in making more if there's a market. While still a prototype, this one has been down the track four times already with no issues whatsoever. While not cheap to build, there's no more compromising on speed selections with this accessory.
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coggonobrien View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote coggonobrien Quote  Post ReplyReply Direct Link To This Post Posted: 21 Feb 2016 at 6:50pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Charlie175 Quote  Post ReplyReply Direct Link To This Post Posted: 21 Feb 2016 at 7:20pm
That's pretty cool, how does it work?

Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 21 Feb 2016 at 7:27pm
There's a blocker sleeve that goes between the two top gears. Right now it's in under-drive. Remove the blocker sleeve and slide the top rear gear forward and it's in direct-drive. Reinstall the blocker sleeve and cover it up.
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Fields View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fields Quote  Post ReplyReply Direct Link To This Post Posted: 21 Feb 2016 at 10:06pm
Interesting.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Charlie175 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 5:35am
I have started to see more WC Transmission adaptions pop up, but this would be even better since it is not visual.
Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 6:04am
Exactly, and the ratios could be chosen to almost whatever you want.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Larry(OH) Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 7:01am
I like it!!
'40 WC puller,'50 WD puller,'50 M puller '65 770 Ollie

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Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 9:21am
Now you just need to add a shifter groove to that top gear, a detent system to do away with the sleeve and figure out a shifting fork that is "out of the way"  Big smile
http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 9:38am
That was my original plan, but was so excited to get it up and working, I ditched that idea. Most of the time, I'll be in Low 2nd anyway, so changing it often won't be needed in my case.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote O.P.S. Heads Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 9:59am
The way I see it, you've designed a transmission system that will work in a wide range of engines from 50 HP on up. 1st gear with the gear box in under drive should still work with a pretty much stock engine with 38 inch tires. Big power engines have a gear between every gear. Pretty neat.   
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Larry(OH) Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 10:54am
So the big question....cost$$
'40 WC puller,'50 WD puller,'50 M puller '65 770 Ollie

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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 11:31am
Almost a semi-load of corn installed and turn-key in your existing torque housing. That's one of the issues....I have to have a torque housing with the clutch shaft AND the transmissions input shaft.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CAL(KS) Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 12:04pm
its awful dry here we cant grow much dryland corn, would you take a load of sorghum LOL  sadly about the same price now LOL  i would imagine the gears in batches would bring the cost down..  but youd have to sit on them...

do the bolts sitting in the pic  go through a heavy plate on top?>


Edited by CAL(KS) - 22 Feb 2016 at 12:09pm
Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20

Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 1:03pm
The picture wasn't quite the finished product, and yes, there is a plate that bolts to the top to keep the rear bearing support from moving around. I'll probably got to Gr8 studs with flange nuts instead of just bolts.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2016 at 6:22pm
Gears custom made in batches, usually means 25 or 50 or 100, and then there's the matter of what exact gear ratio one might want. That's why these things are expensive.....very low demand.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2016 at 8:28pm
Could you use splined hubs like my gearboxes use, then use Profab or SCS gears to lower the price of gears? Or are your shaft centers too close togather?     MACK
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 14 Mar 2016 at 4:12pm
Profab gears too far apart...not enough room in the housing.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote allischalmerguy Quote  Post ReplyReply Direct Link To This Post Posted: 14 Mar 2016 at 10:59pm
DrAllis and company...
That is pretty neat thinking there! Wow!
Will you be at Sigourney on Saturday to test it there?
Pastor Mike
It is great being a disciple of Jesus! 1950 WD, 1957 D17...retired in Iowa,
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2016 at 7:35pm
Certainly a simple and clean concept.I like it!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JoshL Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jul 2016 at 1:40pm
Dr Allis,
I would be interested in something like that. How much would the cost be of the exact type? 15 percent underdrive.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jul 2016 at 3:41pm
Almost a semi-load of corn installed and turn-key in your existing torque housing.
http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 28 May 2017 at 4:12pm
Just an update on this two-speed transmission. All of 2016 season and thus far in 2017, there have been 29 hooks made with this tractor.    27 of them were in 15% under-drive and 3 were in direct drive.  Thus far, no issues whatsoever.  The 15% under works out quite well in 3.5 to 4.0 MPH classes in second gear..
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Post Options Post Options   Thanks (0) Thanks(0)   Quote One Sick Puppy Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2020 at 2:24pm
Dr. Allis, I take it you removed the oil clutch and hydraulic pump to accomplish this? Did you have the gears cut for this project, or did you find something usable with a proper shaft/countershaft centerline?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2020 at 2:56pm
Hydraulic pump, PTO gears and hand clutch removed to make room. Gears and countershaft custom made for the project.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote One Sick Puppy Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2020 at 3:38pm
Dr. Allis, are you making parts for these as Kit? I'd be interested in purchasing the appropriate gearing. I'm going to start the process of replacing my 226 cu. in. engine with an Allis Chalmers 433T. That engine has a significantly higher "high idle", so additional lower gear ratios would be to my advantage.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2020 at 8:14pm
Not interested in making another one. I've sold the tractor that had that 2-speed in it. If you install a D-17 ring and pinion or use a WD45 diesel rear end, they are geared 15% slower. That 433-T engine peaks torque at 1700 RPM and a WD45 diesel ran 1900 RPM high idle. I think you'd like the 15% reduction.
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