To cold-set or to just shove in..126mm->130mm
01-29-19, 03:25 PM
#26
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I found veryyyyyy little info but it indeed was available at some point. Finding the hub is another topic.. Once I receive my 126mm with 8 speed compatible cassette, Ill post more pics. I have this pic for the time being as it was sent from the seller. Very excited!
Also I have read there is a trick to using 8-9 speed Ergo shifters with 7 speed freewheel. Is this true and straight forward? Or will it require a combination of parts? (Ex. Campagnolo 8-9 speed brifters, shimano rear derailleur etc.)
Also I have read there is a trick to using 8-9 speed Ergo shifters with 7 speed freewheel. Is this true and straight forward? Or will it require a combination of parts? (Ex. Campagnolo 8-9 speed brifters, shimano rear derailleur etc.)
01-29-19, 04:45 PM
#27
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The Sheldon Brown piece referred to above contains the following passage:
I've been using a 140mm tandem rear in a 135mm rear for years without any cold setting. It is a little bit of a pain getting the wheel in and out, which may make it a little more difficult to steal the rear wheel. Otherwise, I have not noticed any difficulties.
Ideally, the frame spacing should exactly match the hub spacing. This makes for easiest wheel replacement. In practice, however, there's a fair amount of latitude in fit. In fact, when the first 130 mm 8-speed hubs were introduced, they had locknuts with beveled sides, so that you could "spring" apart the rear triangle of a frame made for the then-standard 126 mm spacing.A conventional cup-and-cone hub tolerates some bearing misalignment, and in general, you can safely go up one size in spacing this way, just springing the frame apart. I can't give you an absolute guarantee that this won't cause damage, but the odds are very much in your favor.Having to spring the frame every time you replace the wheel is inconvenient, especially if it has a quick-release axle .An internal-gear hub or sealed-bearing hub is very likely to be damaged if the dropouts are not parallel. In this case, cold setting is the better way to go. If you're going up more than one size, say from 120 to 130, or from 126 to 135, you should definitely cold set the frame.
01-29-19, 07:16 PM
#28
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The Sheldon Brown piece referred to above contains the following passage:
I've been using a 140mm tandem rear in a 135mm rear for years without any cold setting. It is a little bit of a pain getting the wheel in and out, which may make it a little more difficult to steal the rear wheel. Otherwise, I have not noticed any difficulties.
I've been using a 140mm tandem rear in a 135mm rear for years without any cold setting. It is a little bit of a pain getting the wheel in and out, which may make it a little more difficult to steal the rear wheel. Otherwise, I have not noticed any difficulties.
02-02-19, 08:46 AM
#29
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Thread Starter
Don't know about "freewheel", but I'm using 8 speed Ergo Shifters with Shimano 7 speed cassette, on a Shimano 1055 hub , and a Campy Triple Racing RD. The lower gear shift or index, is locked out by the RD lower set screw. Campy 8 speed and Shimano 7 speed cassette pitch is 5mm. Only caution is , the RD (Campy) must be a Slant parallelogram . KB
02-02-19, 08:15 PM
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I ran into to this , when I added Ergo shifters, and using my 7 speed Athena RD. The RD would skip and jump around , in the middle of the cassette . It just wouldn't index properly, despite, the pitch of the Shimano 7 speed cassette being 5mm. A little more research (In BF) , I needed a 8 speed or newer RD, one that was a slant design. I keep searching for a RD , and finally, after months, I came across a Campy Racing Triple (Circa 1997), shifting is now perfect. KB
Last edited by kcblair; 02-03-19 at 12:04 PM.
02-05-19, 10:09 AM
#33
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Thread Starter
I mean..hopefully the seller wasnt just lying to me about it..
Ill know more once it arrives! Then, we try to debunk this notion of it either existing or not..more likely YES! loll. Also, Ive decided to run 126mm on my frame, running 7 speed cassette with 8 speed Campagnolo Ergo. My biggest thing was to be able to run 'modern' components (although I wont be able to go above 8 speed) but given the gear ratio is what I need, I dont see it being a problem.
Ill know more once it arrives! Then, we try to debunk this notion of it either existing or not..more likely YES! loll. Also, Ive decided to run 126mm on my frame, running 7 speed cassette with 8 speed Campagnolo Ergo. My biggest thing was to be able to run 'modern' components (although I wont be able to go above 8 speed) but given the gear ratio is what I need, I dont see it being a problem.
02-05-19, 02:45 PM
#34
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I found veryyyyyy little info but it indeed was available at some point. Finding the hub is another topic.. Once I receive my 126mm with 8 speed compatible cassette, Ill post more pics. I have this pic for the time being as it was sent from the seller. Very excited!
Also I have read there is a trick to using 8-9 speed Ergo shifters with 7 speed freewheel. Is this true and straight forward? Or will it require a combination of parts? (Ex. Campagnolo 8-9 speed brifters, shimano rear derailleur etc.)
Also I have read there is a trick to using 8-9 speed Ergo shifters with 7 speed freewheel. Is this true and straight forward? Or will it require a combination of parts? (Ex. Campagnolo 8-9 speed brifters, shimano rear derailleur etc.)
I just built a Bianchi with 8 speed Ergo levers and a current Shimano HG 7 speed freewheel. I used a Mirage 9/10 RD after having trouble with an 8 speed era Racing Triple. After switching to the Mirage it is shifting fine in both directions. Still need to try it on the road though.
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