Mystery Crankshaft

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Mark Chaffin
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Mystery Crankshaft

Post by Mark Chaffin » Mon Feb 03, 2020 11:10 am

I located this beautiful counterbalanced billet crankshaft and would like to see if anyone may know who may have manufactured it. I was unable to locate a name on the crankshaft other than a faint number 1103. The main journals measure 1.625. The rod journals measure 1.480. Stroke is 4". The journals are protected by a protective coating. It appear to be in new condition. Thanks for your assistance.
Crankshaft.jpg
Crankshaft2.jpg

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Topic author
Mark Chaffin
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Re: Mystery Crankshaft

Post by Mark Chaffin » Mon Feb 03, 2020 11:11 am

Also forgot to mention. It has been cross drilled for oil pressure.


Les Schubert
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Re: Mystery Crankshaft

Post by Les Schubert » Mon Feb 03, 2020 12:36 pm

All I can offer is that I would certainly use it!!


StanHowe
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Re: Mystery Crankshaft

Post by StanHowe » Mon Feb 03, 2020 2:09 pm

WE NEED A "LIKE" BUTTON!!


Wayne Sheldon
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Re: Mystery Crankshaft

Post by Wayne Sheldon » Mon Feb 03, 2020 4:03 pm

Beautiful! And very interesting.
-Warning- Looks like I may be the "downer" for the day.
But,I don't think I like the method of cross-drilling for pressurized oiling. Given the position of the holes I can see, it is multiple intersecting paths, which remove more internal material with greater exposure to outer surfaces. Such a "lattice" of drilling creates more potential fracture points than simple single angled drilling (IF such single drilling is practicable, which looks to me like it could have been done?).

Worse. I don't like the looks of a couple of the radius cuts on the end of the journals. The worst one looks to be the rear of the center main (almost square). A couple others don't look bad? but the transition from plane to plane is not smooth enough.

If it were mine? I don't think I could resist using it. And it would probably run a long time. But I wouldn't be surprised when it broke either.


Dan McEachern
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Re: Mystery Crankshaft

Post by Dan McEachern » Mon Feb 03, 2020 6:11 pm

Mark- I believe I have an identical crank minus the cross drilling on the rod journals.
Dan


Mike Penserini
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Re: Mystery Crankshaft

Post by Mike Penserini » Mon Feb 03, 2020 9:49 pm

I have a similar crankshaft with no counterweights and a 3 inch stroke.
22520125_10154990252031680_3493355817248850834_o.jpg


T4Tom
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Re: Mystery Crankshaft

Post by T4Tom » Mon Feb 03, 2020 10:19 pm

Are any of those Fronty cranks?
Attachments
Screen Shot 2020-02-03 at 7.15.53 PM.png
Screen Shot 2020-02-03 at 7.13.56 PM.png


Kohnke Rebabbitting
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Re: Mystery Crankshaft

Post by Kohnke Rebabbitting » Mon Feb 03, 2020 10:44 pm

No. one picture, looks like it has been ground up to the Radius, and left a right angle. Closer pictures would take the guess work out of it.

I was looking at No. 1 Pin, the closest Radius, to the front of the crank.

Here was one of the Model T cranks that, Vern, at Arnold Motor, in Fort Dodge, Iowa Ground. His cranks were perfect in every way.

Herm.
Attachments
Vern's Reground Model T  Crank shaft, Arnolds, Fort Doge, Iowa. 019.jpg
Vern's Reground Model T  Crank shaft, Arnolds, Fort Doge, Iowa. 018.jpg
Vern's Reground Model T  Crank shaft, Arnolds, Fort Doge, Iowa. 015.jpg
Vern's Reground Model T  Crank shaft, Arnolds, Fort Doge, Iowa. 011.jpg
Vern's Reground Model T  Crank shaft, Arnolds, Fort Doge, Iowa. 021.jpg

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Topic author
Mark Chaffin
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Re: Mystery Crankshaft

Post by Mark Chaffin » Mon Feb 03, 2020 10:48 pm

I want to say it is almost identical to the bottom picture Tom posted above. It looks very similar.


Kevin_m
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Re: Mystery Crankshaft

Post by Kevin_m » Tue Feb 04, 2020 8:31 pm

I am fuzzy on the details, but that kinda looks like a "Joe Morris" (?) crankshaft. I have one in my speedster, but it has been over 25 years since I've seen it (fortunately). I hear they have problems. Hope others will chime in with better info. I think Joe resided somewhere in the California Sierra foothills.


Kevin Pharis
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Re: Mystery Crankshaft

Post by Kevin Pharis » Tue Feb 04, 2020 10:29 pm

Kevin_m wrote:
Tue Feb 04, 2020 8:31 pm
I am fuzzy on the details, but that kinda looks like a "Joe Morris" (?) crankshaft. I have one in my speedster, but it has been over 25 years since I've seen it (fortunately). I hear they have problems. Hope others will chime in with better info. I think Joe resided somewhere in the California Sierra foothills.
The Joe Morris cranks were very similar in appearance to this crank... but were fabricated from multiple pieces and welded together. Joe made no attempt to hide his assembly process and his cranks are instantly recognizable

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Topic author
Mark Chaffin
Posts: 3327
Joined: Sat Jan 12, 2019 12:11 pm
First Name: Mark
Last Name: Chaffin
* REQUIRED* Type and Year of Model Ts owned: 1911 Speedster, 1927 Lake Roadster
Location: Lake Elsinore
MTFCA Number: 31705
Board Member Since: 2001

Re: Mystery Crankshaft

Post by Mark Chaffin » Wed Feb 05, 2020 10:24 am

Lots of very good information provided. Thank you very much.

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