Mid-1980's De Rosa BB thread?
11-14-07 | 03:52 PM
#1
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Mid-1980's De Rosa BB thread?
Hi, Im selling an old De Rosa, purchased in 1986 if I remember right. One of the bidders wants to know whether it's got English or Italian BB threading. Can anybody help me out? I pulled the cranks but there's nothing on the BB to indicate which kind it is, and I don't have the proper tools to get the fixed cup off to see which way it's threaded. Your expert help would be appreciated!
11-14-07 | 03:55 PM
#2
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From: Lancaster County, PA
Bikes: '39 Hobbs, '58 Marastoni, '73 Italian custom, '75 Wizard, '76 Wilier, '78 Tom Kellogg, '79 Colnago Super, '79 Sachs, '81 Masi Prestige, '82 Cuevas, '83 Picchio Special, '84 Murray-Serotta, '85 Trek 170, '89 Bianchi, '90 Bill Holland, '94 Grandis
Measure the shell. If its 70mm it's Italian. If it's 68mm it's English. I'd bet all my bikes it's Italian.
11-14-07 | 03:56 PM
#3
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From: n.w. superdrome
Bikes: 1 trek, serotta, rih, de Reus, Pogliaghi and finally a Zieleman! and got a DeRosa
Is there some marking on either the fixed or adjustable cup, i.e. 1 x 24 or similiar?
if so we can let you know what you've got.
Off hand I'd say it's probably an Italian thread, of course I could be completely wrong,
wouldn't be the first time.
Marty
if so we can let you know what you've got.
Off hand I'd say it's probably an Italian thread, of course I could be completely wrong,
wouldn't be the first time.
Marty
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11-14-07 | 04:02 PM
#4
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From: TORONTO , ONT , CA
Bikes: '86 AMBROSI / C RECORD. PINARELLO MONTELLO / FRAME, FORK.
11-14-07 | 04:16 PM
#5
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From: Lancaster County, PA
Bikes: '39 Hobbs, '58 Marastoni, '73 Italian custom, '75 Wizard, '76 Wilier, '78 Tom Kellogg, '79 Colnago Super, '79 Sachs, '81 Masi Prestige, '82 Cuevas, '83 Picchio Special, '84 Murray-Serotta, '85 Trek 170, '89 Bianchi, '90 Bill Holland, '94 Grandis
Italian bikes are still 70mm shell width and Italian threaded as standard. For a bike of that era made by Ugo -one of the strongest proponents of "Tutto Italiano" - it's pretty much a slam dunk. I'm not worried about my bikes.
11-14-07 | 04:17 PM
#6
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From: Lancaster County, PA
Bikes: '39 Hobbs, '58 Marastoni, '73 Italian custom, '75 Wizard, '76 Wilier, '78 Tom Kellogg, '79 Colnago Super, '79 Sachs, '81 Masi Prestige, '82 Cuevas, '83 Picchio Special, '84 Murray-Serotta, '85 Trek 170, '89 Bianchi, '90 Bill Holland, '94 Grandis
Italian threading is 36 x 24, BTW.
11-14-07 | 04:18 PM
#7
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From: SoCal
Hi, Im selling an old De Rosa, purchased in 1986 if I remember right. One of the bidders wants to know whether it's got English or Italian BB threading. Can anybody help me out? I pulled the cranks but there's nothing on the BB to indicate which kind it is, and I don't have the proper tools to get the fixed cup off to see which way it's threaded. Your expert help would be appreciated!
Pinarello probably would have had a coronary if they knew that I had used Shimano Dura-Ace on my '87 Montello back then. My shop made me pronounce it "DUR-AHHHCHEE" when ever I would come in.
11-14-07 | 04:25 PM
#10
feros ferio
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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;
Easy test: unscrew the BB lockring and try to thread on a known English or French/Swiss unit. If it will not even go properly over the outer face of the adjustable cup, you are trying to put a 35mm = 1.375" ring on a 36mm (Italian) cup.
Editorial: The only good thing about Italian or French BB threading is that one can microadjust the chainline by installing adjustable cups on both sides.
Editorial: The only good thing about Italian or French BB threading is that one can microadjust the chainline by installing adjustable cups on both sides.
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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
11-14-07 | 04:29 PM
#11
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From: NW Burbs, Chicago
Italian will have right hand threads on both sides, English will have left hand threads on the drive side.
To test, if either of the cups thread into both sides of the BB, it is Italian, if either of the cups can thread into only one side of the BB, it is English.
To test, if either of the cups thread into both sides of the BB, it is Italian, if either of the cups can thread into only one side of the BB, it is English.
11-15-07 | 12:31 AM
#14
11-15-07 | 05:41 AM
#15
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From: Lancaster County, PA
Bikes: '39 Hobbs, '58 Marastoni, '73 Italian custom, '75 Wizard, '76 Wilier, '78 Tom Kellogg, '79 Colnago Super, '79 Sachs, '81 Masi Prestige, '82 Cuevas, '83 Picchio Special, '84 Murray-Serotta, '85 Trek 170, '89 Bianchi, '90 Bill Holland, '94 Grandis
11-15-07 | 10:47 AM
#16
That's what I'd guess: Mtn. bikes would "properly" use JIS standards, so a BSC thread BB. But just to keep us on our toes, I serviced a late '90s Bianchi road bike, made in Italy with Reparto Corsa decals all over it, and it had a BSC BB...kind or surprised me, it was a Campy sealed unit, too.
11-15-07 | 10:52 AM
#17
park ranger
Joined: Aug 2006
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From: mars
Bikes: recumbents
usually i just look on the BB cup. it almost always has the threading written on it.
1.37x24 is english, 36x24 is italian but since it's not written on there just measure the shell width. it's probably 70mm.
1.37x24 is english, 36x24 is italian but since it's not written on there just measure the shell width. it's probably 70mm.
11-15-07 | 12:11 PM
#18
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From: Lancaster County, PA
Bikes: '39 Hobbs, '58 Marastoni, '73 Italian custom, '75 Wizard, '76 Wilier, '78 Tom Kellogg, '79 Colnago Super, '79 Sachs, '81 Masi Prestige, '82 Cuevas, '83 Picchio Special, '84 Murray-Serotta, '85 Trek 170, '89 Bianchi, '90 Bill Holland, '94 Grandis
Uh, did you actually bother to read any of this thread, or just jump right on in there?
11-15-07 | 02:42 PM
#19
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From: SoCal
Been my experience here that most people only seem to read the first post then jump right in with out reading further to se if their solution has already been mentioned.
I too after looking at my old shimano italian BB was going to post the thread size but poster had already stated there was nothing on the outside of the cups. Seems unusal but he is the one looking at it.
