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Identify Maker of this Prewar Reo Royale 4 Speed transmission?


alsancle

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Folks,

This is the transmission in my 31 Reo Royale. Reo offered a 4 speed option in 1931 for 50.00 and this is supposed to be it. But I don't know the manufacturer, it is not marked anywhere on the case. It is a rare option so the club guys have not been able to help me. The patent number seems to be 1143617 which is a 1915 transmission patent assigned to Case & Martin. Any ideas as to the manufacturer? Warner?

http://pdfpiw.uspto.gov/.piw?docid=01143617&SectionNum=1&IDKey=4C596FC7B864&HomeUrl=http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1%2526Sect2=HITOFF%2526d=PALL%2526p=1%2526u=%25252Fnetahtml%25252FPTO%25252Fsrchnum.htm%2526r=1%2526f=G%2526l=50%2526s1=1143617.PN.%2526OS=PN/1143617%2526RS=PN/1143617

thanks!

A.J.

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  • 10 months later...

Hi AJ

 

If you have a copy of Special Interest Auto, Apr-May 1972, Issue #10, page 28 & 29, there is an article titled "4-Speeds of the Early 1930's".   It has a good description of the functions of each type, and a list of year, makes and transmission manufacture and model, ratios and differential axle ratio. 

 

For 1931, REO Royale isn't listed. What is listed follows:

 

Chrysler, Packard and Pierce-Arrow manufactured their own.

 

Durant 6-17, Franklin 153, Gardner (all), Graham Special & Custom, Peerless Standard & Custom 8 and Windsor 8-92 had either Warner Gear model T5 or T5B.

   

Franklin 152 and Stutz LA, MA, MB employed Detroit Gear & Machine model RS.

 

Good to see you at Hershey, you're making great project on a wonderful rarity!

 

Steve

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Hi Steve,

 

Good to see you too.   I think that is the same article that I linked to on the Hemmings blog?  Very interesting.  It looks like the Royale used a Case transmission.  Don't know what other cars those went in.  Right now I have to hope we can get the new gear to mesh correctly as finding a nother transmission is probably impossible.

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I'll take issue with the SIA claim that Pierce manufactured their own 4-speed in 1930.  Pierce used a 4-speed Clark with herringbone gears on **most** of their cars with a wide space between 2nd and 3rd (latter termed "intermediate" which was a 1.25 ratio).  4th gear was direct, and first was a crawler (3.12, off the top of my head).  That was a one-year-only transmission, and is the antithesis of close-ratio.  The Broadmoor Hotel in Colorado Springs had a fleet of 1930 Pierce Model A 7-p tourings (144" wb) for Pikes Peak tours which had 4.88 diffs and a different, far more close-ratio, 4-speed transmission--I believe this was made by Brown-Lipe.  I've driven two of those and the ratios are near-perfect, except of course the 4.88 diffs.

 

Following that, Pierce used Warner Gear transmissions but had their own cases, presumably for mounting purposes.  In many cases, internals from other cars can be substituted, but the cases are unique to Pierce.  A review of Hollander books from the era will substantiate this.

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Somebody else must have used the Case besides Reo?    Especially since this is the only known car to have the optional 4 speed.  It must have gone on some other cars.

 

 

Here is what second gear looks like (with the herringbone).

 

 

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Al, that looks like the Clark.  I have an extra, with the cover off, buried in my shop.  Can't photograph it for comparison with yours until late this week.  Just **perhaps** it may be a Clark with a case unique to the REO.

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George,

 

An extra would be too good to be true.   Any ideas who else used a Case 4 speed?  They couldn't have made one just for Reo.  No volume.

 

I have heard of cars with the Warner & Detroit but not the Case.

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