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Old 02-16-12, 09:51 PM   #1
ddashoff699
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Question About Sturmey Archer ASC Hub

Are you suppose to stop your pedals when you shift gears? Obviously that wouldn't be easy, seeing as it's a fixed gear system.
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Old 02-16-12, 10:05 PM   #2
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No, to shift a fixed gear , the s3x, you spin the pedals without putting any, or only aslight load, on the Hub and shift. The shift is surprisingly clean on the s3x hubs, with practice, it is almost seamless.
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Old 02-16-12, 10:19 PM   #3
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Actually, I was talking about the vintage 1950's ASC hub. But thanks for the initial response.
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Old 02-16-12, 10:38 PM   #4
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Actually, I was talking about the vintage 1950's ASC hub. But thanks for the initial response.
Works the same way with the ASC hub.
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Old 02-17-12, 06:58 PM   #5
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ddashof699, do you have a working ASC?
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Old 02-17-12, 08:01 PM   #6
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When I asked Jim "CyclArt" Cunningham about the operation of his ASC hub, he said, "It shifts YOU." Keep pedaling gently, minimizing either accelerating or decelerating torque, while shifting.
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Old 02-17-12, 10:49 PM   #7
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I think the ASC and S3X are simular in design and ratio, the shifts are very close and at speed almost seamless. I understand a bit about "it shifts you" but in a postive frame of experince. I've never felt ridden or taken over by the hub, on the contrary, you become one with the drive train. Not to the same extent as a single gear fixed but the what the hub lacks due to rotational slack, it makes up for in extending the range of use, especially for an older rider.
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Old 02-18-12, 02:53 PM   #8
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I think the ASC and S3X are simular in design and ratio, the shifts are very close and at speed almost seamless.
The shifting is the same, but the S3X gives a wider range than the ASC.

S3X = 1.00, 0.75, 0.625
ASC = 1.00, 0.90, 0.75
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Old 02-18-12, 03:22 PM   #9
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The ASC would be perfect, the low .625 is so low, I've only used it one and that was to climb a wall of a hill. Would be nice if SA offered a close ratio fixed again.
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Old 02-18-12, 05:16 PM   #10
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The ASC would be perfect, the low .625 is so low, I've only used it one and that was to climb a wall of a hill. Would be nice if SA offered a close ratio fixed again.
What ring/cog do you use? I have my S3X set up so the 0.75 middle gear approximates what I use on my standard fixed gear bike; the 0.625 is good for uphill and headwinds, and the 1.00 for downhill and tailwinds.
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Old 02-18-12, 09:28 PM   #11
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I'm running 46/16. I'm in 1.00 most of the time, .75 when I'm riding in heavy traffic or feeling beat on small hills, .625 is my bailout.
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Old 02-18-12, 10:18 PM   #12
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I'm running 46/16. I'm in 1.00 most of the time, .75 when I'm riding in heavy traffic or feeling beat on small hills, .625 is my bailout.
Ok. I run 48/15. with 0.75 as my default, 0.625 for hills and 1.00 for cruising.
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Old 02-19-12, 05:10 PM   #13
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How have your S3X hubs held up over time? There were a lot of complaints about broken ones, right? I have an S3X that I'd like to build into a new rear wheel, but I haven't done that, so far....
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Old 02-19-12, 07:18 PM   #14
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I've only had mine since October, but because of the mild winter I've actually managed to put a lot of miles on it. No problems so far. IIRC, the complaints were with the initial production, and newer production doesn't seem to suffer the same problems.
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Old 02-19-12, 09:10 PM   #15
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I have one of the early production ones, and it's working fine so far. Don't have a ton of miles on it, but the only glitch I've had so far is that if I knock the shifter out of the first gear detent inadvertently, it finds a neutral zone and freewheels.
Either of you guys had that happen?
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Old 02-19-12, 09:24 PM   #16
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Yes, You can slip it out of gear shifting up or down. I had an early production hub that I tore up, SA replace it under warranty and everything is fine. It's now my go to bike for anything other that grocery runs or rides that will encounter mountains. ( still like to coast )
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Old 02-19-12, 11:11 PM   #17
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So what is "early" and what is "current?"

I bought my hub in about Sept. 2011....
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Old 02-21-12, 04:37 AM   #18
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So what is "early" and what is "current?"

I bought my hub in about Sept. 2011....
If your hub is 120mm OLD, it's almost certainly current as the early ones were snapped up right away when they first came out. The 130mm OLD were not as popular, so if it's one of those it could be early production.
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Old 02-21-12, 06:37 AM   #19
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My first hub that SA replaced was a 120mm. Not to fear 753, I'd assume all the troubled ones are gone now, plus if ou happen to get one, SA is quick to respond.
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Old 02-23-12, 04:54 PM   #20
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Oh, sorry Velognome, yes I actually do have a working ASC hub.
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Old 02-23-12, 10:58 PM   #21
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ddashoff699- What's it on? Pictures are always a nice way to spice up a thread!
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Old 02-24-12, 05:29 AM   #22
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Actually... it's on a bike I just purchased on Ebay. It was owned and built by the late Sheldon Brown! Here is a link to his description of it. I'll post pictures when it arrives. So, so excited! The only modifications are a Brooks saddle instead of the original and different pedals.

http://sheldonbrown.org/gunnar/
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Old 02-24-12, 05:43 AM   #23
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Actually... it's on a bike I just purchased on Ebay. It was owned and built by the late Sheldon Brown! Here is a link to his description of it. I'll post pictures when it arrives. So, so excited! The only modifications are a Brooks saddle instead of the original and different pedals.

http://sheldonbrown.org/gunnar/
Cool. I was wondering when you were talking about the ASC if you had bought this bike.
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Old 02-24-12, 06:59 AM   #24
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Actually... it's on a bike I just purchased on Ebay. It was owned and built by the late Sheldon Brown! Here is a link to his description of it. I'll post pictures when it arrives. So, so excited! The only modifications are a Brooks saddle instead of the original and different pedals.

http://sheldonbrown.org/gunnar/
ddashoff, congratulations on the win! I put in quite a few bids on that bike myself, but it got to a price that was beyond my budget, so I relented. It had a very high reserve, and I wondered if it would even make reserve. They should have just started the auction at a higher price atmo.
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Old 02-24-12, 07:44 AM   #25
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I completely agree on the auction reserve... much to high. And I can hardly afford it myself. I'll either have to sell my other bike or, if I find this bike just isn't for me, send it back on its way to a new owner. I'd really prefer the latter.
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