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Final drive ratios WC - WD

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DaveKamp View Drop Down
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Joined: 12 Apr 2010
Location: LeClaire, Ia
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DaveKamp Quote  Post ReplyReply Direct Link To This Post Topic: Final drive ratios WC - WD
    Posted: 08 Oct 2019 at 10:47pm
Hi Fellers!

Hey... I know there were variations between differential ring/pinion ratios for WC, RC, and WD/45/D17...

But what about the final drives... anybody have a list of the WC, RC, and WD/45/17 final drive pinion and bull gears?
Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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Gerald J. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gerald J. Quote  Post ReplyReply Direct Link To This Post Posted: 09 Oct 2019 at 9:47am
I have the shop manual for the WC in several large pieces, might include the gear ratio details in my on line directory:

http://geraldj.networkiowa.com/Trees

Gerald J.


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DaveKamp View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DaveKamp Quote  Post ReplyReply Direct Link To This Post Posted: 09 Oct 2019 at 7:29pm
Not that I could find, Gerald... they have photos and disassembly, but no tooth counts... most likely, the technical writers assumed that it wasn't necessary to count all the teeth to determine wether they were all present... LOL
Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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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: 10 Oct 2019 at 7:01am
I've got all that info at home. Will try and remember to look it up for you.
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frnkeore View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote frnkeore Quote  Post ReplyReply Direct Link To This Post Posted: 10 Oct 2019 at 12:14pm
The Final drive tooth count on the D17, in my service manual is, 15 x 82. Effective with S/N 42001 and up, it is 14 x 76.
Frank
1959 D17 Series I #24001+
'55 & '59 Ford 850 & 861
Ferguson TO 35 Deluxe, Oliver 70
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DaveKamp View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DaveKamp Quote  Post ReplyReply Direct Link To This Post Posted: 10 Oct 2019 at 11:10pm
Thanks Frank-  so...

WC after 42001, of 76/14 = 5.43:1 ratio.  The differential being 3.6:1 makes the composite drive ratio 5.43*3.6 = 19.55 pinion rotations to 1 tire rotation.


And for the D17 is 82/15 = 5.47:1 ratio...  if the R&P was 9/35 = 3.89, that makes 5.47*3.89= 21.27 pinion rotations to 1 tire rotation.

Does this all sound correct?

Now, this means there's no substantial reduction difference between the  final reduction drives of the WC or the WD/45/D17....


Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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frnkeore View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote frnkeore Quote  Post ReplyReply Direct Link To This Post Posted: 11 Oct 2019 at 2:09am
Dave,
I don't have any info on the WC. My info is for the D17, only.

But, I believe that the WD45, had the same final drives (at least the later ones) as the S I D17. I'm pretty sure the S/N 42001, D17 will be a S II.
Frank
1959 D17 Series I #24001+
'55 & '59 Ford 850 & 861
Ferguson TO 35 Deluxe, Oliver 70
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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: 11 Oct 2019 at 6:33pm
RC and WC final drives are 17T x 68T for a 4.0 to 1 ratio.  Ring and pinion for RC (and high wheeled WC's) was 6.6 to 1.  Regular WC's were 4.7 to 1.     All WD's,WD45's and D-17's prior to Series 3 finals were 15T x 82T for 5.47 to 1.   Ring and pinion for all straight stick WD's ( 12T x 43T) was 3.6 to 1.  Ring and pinion for late WD and all WD-45 gas tractors (13T x 43T) was 3.3 to 1.  WD-45 diesels and all D-17's were (9T x 35T) 3.9 to 1 ring and pinions.  Final drives on D-17 series 3 and newer and 170's were (14T x 76T) 5.43 to 1.
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DaveKamp View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DaveKamp Quote  Post ReplyReply Direct Link To This Post Posted: 12 Oct 2019 at 9:58am
Perfect!  Thanks, Doc, and all!!!

(Nefarious plan thoughts going on in my brain)Evil Smile
Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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