Suntour Roller Cam Brakes
10-19-22, 04:13 PM
#26
feros ferio
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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;
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My frame is definitely June 1988 fabrication (see serial number), but it was replaced under warranty for the original owner. I thought there were only a total of 2K KOM-10s made, spanning 1988 and 1989, but I suppose the original frame and fork might have been made in 1987, in preparation for the 1988 model year. Since the fork is original, I suspect Schwinn abandoned the RollerCam early in the production run, in favor of the more conventional cantis. It is indeed a great bike -- mine gets a lot of good use.
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"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
10-19-22, 07:38 PM
#27
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HTH
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10-19-22, 09:55 PM
#28
Senior Member
I've had them on a few bikes. Roller cams and U-brakes have a lot of similarities. They both have a tendency to allow debris to interfere with braking, especially if they're on the underside of the chainstay. Cantis allowed for a lot more open space around the brakes, thus preventing debris from collecting, which is why they're a much better choice if you're actually taking a bike off road. Roller cams and U brakes are very good for commuters/tourers though. Low profile brakes prevent interference between the brake and panniers, as well as stopping heel strike, especially if they're located under the chainstay. The wide arms all the early canti had to get the braking power needed is the problem I think these brakes were trying to fix. Unfortunately, about the same time these brakes came along they were already making cantilever brakes low profile with v-brakes just around the corner.
10-20-22, 03:00 AM
#29
Newbie
I think the upper one (with the holes drilled through) is the XC power model, while the one below (with the dimples) is the XC pro. XC power was more expensive.
I can't post links yet, but google suntour museum mombatbicycles.
I can't post links yet, but google suntour museum mombatbicycles.
Does anyone know when this version (vis-a-vis the version on the Schwinn below) was out? And/or, what bikes it was typically found on? It definitely has the upper hand in the "looks like beautiful old bridge architecture" department. Not sure how the spring adjustment/balance works with this version.
Smoke that chrome! Looks like a clone of mine (confession - I have two....).
Even after releasing the cam? Never had that experience myself, even with 26x2s. Sometimes one of the arms swings all the way open as I remove the wheel; it's never thrown it out of adjustment, however.
Smoke that chrome! Looks like a clone of mine (confession - I have two....).
Even after releasing the cam? Never had that experience myself, even with 26x2s. Sometimes one of the arms swings all the way open as I remove the wheel; it's never thrown it out of adjustment, however.
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10-20-22, 06:38 AM
#30
Extraordinary Magnitude
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The brakes in my picture are not marked- but are paired with XC Sport levers- which would be sort of on par with the Deore (just plain "Deore") shifters and derailleurs that came specced on the bike.
Generally speaking- XC, XC 9000 and XC Pro are the top of the line in their respective time periods. (Because Suntour's naming convention was a mess and changed from (seemingly) year to year. XC Pro didn't come around until 1989/90, and I think roller cams had died by then.
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Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
10-20-22, 07:13 AM
#31
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Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
