Chainline Question
04-28-09 | 09:58 AM
#1
Thread Starter
Senior Member
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From: Ouest Seattle
Bikes: Mercian King of Mercia, Surly Long Haul Trucker,81 Fuji Gran Tour SE, 83 Fuji S12S LTD, Voyageur 11.8 chrome, , Voyageur 11.8
Chainline Question
On older bikes with 6x2 gears set ups, are there chainline issues if you move to a triple in front? The older rear spacing is 126.
04-28-09 | 10:38 AM
#2
Not sure I understand the question. Are you worried about chainring to chainstay clearance? That depends on the frame. Of course, you can always push the chainline out enough to make any frame a triple but then you could have chainline issues; but with 126 spacing you could make it work if you don't cross-chain. Otherwise, just get a new spindle, crankset, FD (and RD if it's short cage) and you'll be good to go.
Last edited by Iowegian; 04-28-09 at 10:41 AM. Reason: clarity !
04-28-09 | 01:20 PM
#3
Bianchi Goddess
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From: Shady Pines Retirement Fort Wayne, In
Bikes: Too many to list here check my signature.
Hello there might be a bit of an issue in the extreme gear (large front/small rear) provided the innner chainring does not hit the chain stay and the middle ring is close to the same place you should be ok.
04-28-09 | 03:32 PM
#4
feros ferio
Joined: Jul 2000
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From: www.ci.encinitas.ca.us
Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
I have converted bikes with 2x5 and 2x6 gearing to triples, with good success. You are most likely to have problems with large-large crosschaining, which is why you want the small chainring as close as possible to the chainstay and the small freewheel cog as close as possible to the dropout (allowing for chain rivet clearance, of course).
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
04-28-09 | 10:01 PM
#5
Thread Starter
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Joined: Aug 2007
Posts: 1,761
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From: Ouest Seattle
Bikes: Mercian King of Mercia, Surly Long Haul Trucker,81 Fuji Gran Tour SE, 83 Fuji S12S LTD, Voyageur 11.8 chrome, , Voyageur 11.8
John, How do I do that, i.e., how do I choose my crank/gear set/wheel dish?
