3-spd hubs back arouond 1970?
02-21-07, 02:23 PM
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Title-Les
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3-spd hubs back arouond 1970?
I'm talking to a man who owns a 3-spd Huffy which he bought new in 1972. His hub markings only read ""THREE SPEED HUB F" and "USAPAT3021728". " and that's it. The shifter is a twist-grip and since he is the original and only owner I take his word that what is there is what was original to the bike.
My question arises because although I was well into adulthood in 1970, all this time I just assumed that every 3-spd bike back in those days used a Sturmey Archer or a licensed version which somehow still reflected S/A in the hub markings.
How wrong am I? Anybody who can place this into perspective for me?
alf
My question arises because although I was well into adulthood in 1970, all this time I just assumed that every 3-spd bike back in those days used a Sturmey Archer or a licensed version which somehow still reflected S/A in the hub markings.
How wrong am I? Anybody who can place this into perspective for me?
alf
02-21-07, 02:32 PM
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Shimano made three speed hubs in the sixties and seventies. They did use them on Huffy bikes.
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02-21-07, 03:39 PM
#3
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U.S. Patent 3,021,728 for "Three Stage Speed Change Mechanism for a Bicycle" was issued to Keizo Shimano on February 20, 1962.
Last edited by Scooper; 02-21-07 at 03:45 PM.
02-21-07, 03:45 PM
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See if you can get a picture of the hub...
the shimano all used a bellcrank system as far as I know. The S-A 3 speeds all have the indicator chain. I know S-A did allow several companies to make them under license.
Aaron
the shimano all used a bellcrank system as far as I know. The S-A 3 speeds all have the indicator chain. I know S-A did allow several companies to make them under license.Aaron
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"Steel: nearly a thousand years of metallurgical development
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02-21-07, 04:04 PM
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So SHIMANO it is
Thanks guys and especially for the patent dwg. I never would've thought of using the internet to go backward from the patent number, thanks for that. Thanks all who responded and I passed on the comments to the guy with the bike so he'd better know what he has.
alf
alf
02-21-07, 06:04 PM
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Originally Posted by Scooper
U.S. Patent 3,021,728 for "Three Stage Speed Change Mechanism for a Bicycle" was issued to Keizo Shimano on February 20, 1962.
I think I'm going to have to look at some other sources before I can figure out how it works
02-21-07, 09:49 PM
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Just got done working on a 1970s-era Fuji Avalon 3 speed with the Shimano hub. It's on the left side of the rear hub, and SA was on the right side.
02-21-07, 11:56 PM
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Originally Posted by lebowitz
That is a great diagram, thanks for posting
I think I'm going to have to look at some other sources before I can figure out how it works
I think I'm going to have to look at some other sources before I can figure out how it works
You can download patent documents free online from the Patent Office Web Site. The documents are in TIFF format, so you'll need a TIFF reader. I use IrfanView to view the TIFF pages and convert them to JPG files.
02-22-07, 03:53 AM
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Originally Posted by zonatandem
Just got done working on a 1970s-era Fuji Avalon 3 speed with the Shimano hub. It's on the left side of the rear hub, and SA was on the right side.
Aaron
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ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.
"Cycling should be a way of life, not a hobby.
RIDE, YOU FOOL, RIDE!"_Nicodemus
"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"_krazygluon
Webshots is bailing out, if you find any of my posts with corrupt picture files and want to see them corrected please let me know. :(
ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.
"Cycling should be a way of life, not a hobby.
RIDE, YOU FOOL, RIDE!"_Nicodemus
"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"_krazygluon
02-22-07, 06:14 AM
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Did Shimano use the same ratios as the Sturmey-Archer AW? I am putting together a Kabuki with a Shimano 3 speed hub (that came from a Huffy) and I was curious what the ratios might be.
02-22-07, 01:11 PM
#11
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Originally Posted by Pompiere
Did Shimano use the same ratios as the Sturmey-Archer AW? I am putting together a Kabuki with a Shimano 3 speed hub (that came from a Huffy) and I was curious what the ratios might be.
