Suntour Barcon Operation
#1
Suntour Barcon Operation
I recently picked up a 1978 Raleigh Super Course. The bike is all original minus tires/tape/cables and in great shape. I took 'er out for a spin yesterday with my girlfriend and enjoyed the ride very much. But I have a question about how the Barcon shifters should feel, especially when downshifting to an easier gear in the rear. The ratchet mechanism is working, but the lever seems awfully hard to pull up. Moreso than the regular DT friction shifter on my '85 Trek. Is this normal? How should these feel? It's my first time around with these shifters, so I'm not too sure.
Any input is appreciated. Thanks!
Any input is appreciated. Thanks!
#3
feros ferio

Joined: Jul 2000
Posts: 22,417
Likes: 1,882
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;
True. After replacing cables and/or housings as necessary and lubricating the cables and the derailleurs, the next step is to back off on the lever's tension. This is fundamentally a friction system, with the ratchet to help protect against automatic shifting.
__________________
"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
#4
Cool, thanks for the tips! The previous owner did replace the shift housing and cables but I'll check to make sure everything's moving freely. Also, dumb question, but the ratcheting should kick in when pulling against the derailer, correct? As in when downshifting? Also, how would I go about backing off the tension?
#5
Bikes are okay, I guess.



Joined: Jan 2015
Posts: 8,058
Likes: 3,825
From: Richmond, Virginia
Bikes: Waterford Paramount Touring, Raleigh Sports 3-speeds in M23 & L23, Schwinn Cimarron oddball build, Marin Palisades Trail dropbar conversion, Nishiki Cresta GT, Jeunet mixte
Each shifter has a screw going in from the right side and two nuts on the left side. One of those is a round cover nut and the second is beneath that and is a hex recessed into the shifter body. You may need to remove the cover nut first and then loosen the one on the right to get the right shifting tension and then reinstall the cover nut on the left to lock against the hex. Once it is snug enough to prevent self-shifting it then becomes a matter of strength and taste as to how strong you want it.
Thread
Thread Starter
Forum
Replies
Last Post
Velocivixen
Classic and Vintage Bicycles: Whats it Worth? Appraisals.
3
04-12-14 11:28 AM
WalksOn2Wheels
Bicycle Mechanics
1
05-14-11 09:50 AM







