So I just got a 13 tooth pinion stamped with Ruckstell, 8501 13-40 20N on the front and LC.CO. ID24 along with another number that can't be read on the back.
Would this have been used with the standard 40 tooth ring gear or other? With 40 tooth, looks to be about 3.07 to 1. How common was this combination, I don't see a lot in the Ruckstell repair book from the club.
Ruckstell 13 tooth pinion gear
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Mark Gregush
Topic author - Posts: 5370
- Joined: Sat Jan 05, 2019 1:57 pm
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Ruckstell 13 tooth pinion gear
I know the voices aren't real but damn they have some good ideas! 
1925 Cut down pickup
1948 Ford F2 pickup
1925 Cut down pickup
1948 Ford F2 pickup
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speedytinc
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Re: Ruckstell 13 tooth pinion gear
It goes with a rux ring gear. That gear has the offset you see in the 13-39 gear sets. No, it wont fit a stock ford 40 T gear.
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Mark Gregush
Topic author - Posts: 5370
- Joined: Sat Jan 05, 2019 1:57 pm
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Re: Ruckstell 13 tooth pinion gear
Ok, buggers! Thanks
I know the voices aren't real but damn they have some good ideas!
1925 Cut down pickup
1948 Ford F2 pickup
1925 Cut down pickup
1948 Ford F2 pickup
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Wayne Sheldon
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Re: Ruckstell 13 tooth pinion gear
Before a thousand 13/39 gears were made post WW2, those were the usual "3 to 1" gears. Yes, they are not exactly 3 to 1, but that was what people called them. There were also some other companies back in the era that made 13/40, 13/39, 13/36, ten tooth pinions, and even a couple other unusual ratios.
The Ruckstell 13/40 gears were fairly good, but they sometimes had hardening issues resulting in a few teeth sometimes breaking on the outer ends.
The Ruckstell 13/40 gears were fairly good, but they sometimes had hardening issues resulting in a few teeth sometimes breaking on the outer ends.