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NR downtube shifter range

Old 05-19-20, 07:21 AM
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cocoabeachcrab 
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NR downtube shifter range

anyone know what the shifting range for campy downtube NR friction shifters is? i have an 8 speed campy cassette that i'm thinking of using.
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Old 05-19-20, 10:15 AM
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OK, nobody knows, so i'll rephrase.. can a mid 70's Nuovo record downtube friction shifter cover an 8 speed shifting range? (the large cog is 26t) i'm thinking probably not, but wanted to make sure before i source something else that has a time limit to purchase.

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Old 05-19-20, 10:18 AM
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Maybe. it will depending on the mechanism almost traverse 180 degrees.
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Old 05-19-20, 10:26 AM
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Each rear derailleur is a little different.

I've used the Campy DT shifters with a Shimano Ultegra 6500 RD, and 9-speed Shimano cassette.

It shifts fine, but adjustment is a little finicky, and the range of movement is essentially full range tube to tube.
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Old 05-19-20, 10:36 AM
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i'm planning on using an Athena campy rear derailleur. i think i'll just snag the victory friction shifters off ebay that should work for my application. thanks for everyone's input.
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Old 05-19-20, 10:42 AM
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Just for fun I've managed 10 using a Microshift R10 and as CliffordK says, it took some fine motor skills to trim but it worked.
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Old 05-19-20, 10:50 AM
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As far as the shifter goes, I would think that the width of the freewheel/cassette from smallest to largest cog would mandate how well it works. For instance, okay on 130mm spacing, better on 126mm spacing, best on 120mm spacing. I would think that the shifter doesn't care if its corncob or mega-range gears. Its the derailleur that must match the range of cogs.

**One thing that I didn't account for is the radius of the cable channel on the shifter. A larger diameter means less pullback; whereas, a smaller diameter means more pullback.

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Old 05-19-20, 11:19 AM
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I believe that Velo-Orange sells Dia Compe downtube shifters that'll work with 11 spd
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