New Build: De Rosa
#1
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
New Build: De Rosa
Hey folks, I picked up a new project - a De Rosa. This is only my second Italian bike, and somewhat of a holy grail, as I remember seeing these a lot back in the 80s. I think that is approximately the vintage of this one, but need some assistance from some of the De Rosa experts on this forum. In my research, some of the attributes look like early to mid 80s (fork crown, seat stays/binder, etc. But the internal brake cable routing throws me off a bit... It does have an SLX sticker, but not sure if that is accurate, I haven't really peeked into the bottom of the tubes yet to determine if there is rifling there.
In any event, there is some patina and paint chips, but the color is so cool (very dark blue) I am not going to do a repaint. But I will do a re-decal....
In terms of components, I think I will try for mostly Super Record. It does have a Chorus headset, but the stack height seems a little off. I'm thinking about maybe looking for a set of Cobalto brakes...
Any advice the De Rosa experts might provide in terms of date would be great. There is a serial number on the bottom bracket: CO327.... not sure if that means anything....
Thanks
Andy
In any event, there is some patina and paint chips, but the color is so cool (very dark blue) I am not going to do a repaint. But I will do a re-decal....
In terms of components, I think I will try for mostly Super Record. It does have a Chorus headset, but the stack height seems a little off. I'm thinking about maybe looking for a set of Cobalto brakes...
Any advice the De Rosa experts might provide in terms of date would be great. There is a serial number on the bottom bracket: CO327.... not sure if that means anything....
Thanks
Andy
Likes For 75lechamp:
#3
Senior Member
Join Date: Dec 2014
Location: Central Virginia
Posts: 4,781
Bikes: Numerous
Mentioned: 150 Post(s)
Tagged: 0 Thread(s)
Quoted: 1678 Post(s)
Liked 3,100 Times
in
914 Posts
My ‘86 Professional has external brake cable routing and Campy dropouts. I don’t know for sure but I’d guess late ‘80’s. That headset is mid 90’s fwiw
__________________
N = '96 Colnago C40, '04 Wilier Alpe D'Huez, '10 Colnago EPS, '85 Merckx Pro, '89 Merckx Century, '86 Tommasini Professional, '04 Teschner Aero FX Pro, '05 Alan Carbon Cross, '86 De Rosa Professional, '82 Colnago Super, '95 Gios Compact Pro, '95 Carrera Zeus, '84 Basso Gap, ‘89 Cinelli Supercorsa, ‘83 Bianchi Specialissima, ‘VO Randonneur, Ritchey Breakaway Steel, '84 Paletti Super Prestige, Heron Randonneur
N = '96 Colnago C40, '04 Wilier Alpe D'Huez, '10 Colnago EPS, '85 Merckx Pro, '89 Merckx Century, '86 Tommasini Professional, '04 Teschner Aero FX Pro, '05 Alan Carbon Cross, '86 De Rosa Professional, '82 Colnago Super, '95 Gios Compact Pro, '95 Carrera Zeus, '84 Basso Gap, ‘89 Cinelli Supercorsa, ‘83 Bianchi Specialissima, ‘VO Randonneur, Ritchey Breakaway Steel, '84 Paletti Super Prestige, Heron Randonneur
#4
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
Thank you! I did feel some ridges, very shallow..... Interestingly, they are also in the steerer on the fork... Here is a pic looking down from the top of the steerer tube. It's much more subtle than I would have thought.
Likes For 75lechamp:
#5
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
In other words, I can confirm it's definitely SLX....
Likes For 75lechamp:
#6
Senior Member
Join Date: Nov 2015
Posts: 4,489
Mentioned: 102 Post(s)
Tagged: 0 Thread(s)
Quoted: 1641 Post(s)
Likes: 0
Liked 831 Times
in
540 Posts
SL tubesets have the helical ridges in the steerer tube. Even the French Supervitus 980 tubset has it in the steerer tubes.
A lot of people mistakenly think they have an SLX frameset when they just check the steerer tube and find the ridges in there. You always have to check the down tube and the seat tube ends at the BB shell to be sure it is an SLX frsmeset.
A lot of people mistakenly think they have an SLX frameset when they just check the steerer tube and find the ridges in there. You always have to check the down tube and the seat tube ends at the BB shell to be sure it is an SLX frsmeset.
Last edited by Chombi1; 11-02-21 at 08:23 PM.
Likes For Chombi1:
Likes For bironi:
#8
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
Yes I agree, the SLX decal looks somewhat newer. Good advice above, I did feel in the seat tube and there are definitely ridges in there, hard to see, but they are there...
#9
Senior Member
Join Date: Nov 2015
Location: Dublin, Ireland
Posts: 1,268
Bikes: Bianchi Ti Megatube; Colnago Competition; Planet-X EC-130E; Klein Pulse; Amp Research B4; Litespeed Catalyst; Trek Y11
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 605 Post(s)
Liked 480 Times
in
260 Posts
Perfect frame to build & ride. I'd keep the old decals. Great find!
#10
Senior Member
Join Date: Nov 2004
Posts: 23,223
Mentioned: 654 Post(s)
Tagged: 1 Thread(s)
Quoted: 4722 Post(s)
Likes: 0
Liked 3,039 Times
in
1,877 Posts
Neither the 1988 or 1989 catalogues show internal rear brake cable routing, pushing it into the 1990s. so that headset could be OEM.
#11
Full Member
Join Date: Jun 2021
Location: Barboursville, Va
Posts: 278
Bikes: N+1
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 94 Post(s)
Liked 419 Times
in
159 Posts
Definitely early 90s with the brake cable inside the top tube. Mine is 87 I think, and still has brazed on cable guides. Yours also has de rosa dropouts instead of campagnolo, which remind me of Columbus dropouts. I’d build it up with whatever parts will get you riding it, because that’s what these bikes do best.
and that blue is the best de rosa color. Here’s mine.
and that blue is the best de rosa color. Here’s mine.
Likes For Flatforkcrown:
#12
Crawlin' up, flyin' down
Join Date: Jan 2006
Location: Democratic Peoples' Republic of Berkeley
Posts: 5,658
Bikes: 1967 Paramount; 1982-ish Ron Cooper; 1978 Eisentraut "A"; two mid-1960s Cinelli Speciale Corsas; and others in various stages of non-rideability.
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 1027 Post(s)
Liked 2,531 Times
in
1,059 Posts
Great find. Enjoy the heck out of it.
One word of possible caution: crank the wheel quick-releases down extra-hard. On my 1986, the drop outs required that. I thought of the feel of them as "greasy," although that is a metaphor and not strictly accurate. My guess is that the steel on De Rosa drop outs is just a tad harder than with Canpy drop outs, and thus the QR teeth don't bite as hard. All I know is that the rear wheel (and the fork when in a fork-mount carrier) were prone to slip unless I cranked the QRs down extra hard. (I had a 2000 Lemond Zurich that had the same problem, only more so. Well, not on the front - it had lawyer tabs.) Do not let this detract from the riding experience - it's an easy issue to deal with and my guess is that you will very much enjoy how it rides.
One word of possible caution: crank the wheel quick-releases down extra-hard. On my 1986, the drop outs required that. I thought of the feel of them as "greasy," although that is a metaphor and not strictly accurate. My guess is that the steel on De Rosa drop outs is just a tad harder than with Canpy drop outs, and thus the QR teeth don't bite as hard. All I know is that the rear wheel (and the fork when in a fork-mount carrier) were prone to slip unless I cranked the QRs down extra hard. (I had a 2000 Lemond Zurich that had the same problem, only more so. Well, not on the front - it had lawyer tabs.) Do not let this detract from the riding experience - it's an easy issue to deal with and my guess is that you will very much enjoy how it rides.
__________________
"I'm in shape -- round is a shape." Andy Rooney
"I'm in shape -- round is a shape." Andy Rooney
Likes For bikingshearer:
#13
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
Wow that looks fantastic, I do like the color! Nicely done....
#14
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
Gathering components
Gathering some components for the build....
I'm going on the assumption that early to mid 80s Super Record will go well with this bike....
Braze on shifters
Super Record with miraculously uncracked pulleys....
Super Record levers, with what I believe to be actual non-repro hoods, in good shape....
Super Record seat post, appropriate to the eighties....
Record crank with SR rings, dated 1983...
Cinelli 64 bars and 1/A stem...
The front caliper even has the little hole for the rubber stopper - I wonder if you can even find those anywhere? None of my other Campy brakes have this...!
I'm going on the assumption that early to mid 80s Super Record will go well with this bike....
Braze on shifters
Super Record with miraculously uncracked pulleys....
Super Record levers, with what I believe to be actual non-repro hoods, in good shape....
Super Record seat post, appropriate to the eighties....
Record crank with SR rings, dated 1983...
Cinelli 64 bars and 1/A stem...
The front caliper even has the little hole for the rubber stopper - I wonder if you can even find those anywhere? None of my other Campy brakes have this...!
Likes For 75lechamp:
Likes For jiangshi:
#16
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
Thank you!
#17
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
De Rosa confirmation
Well, I wrote to De Rosa (help@derosa.it) and here is their reply:Hello,
thanks for your email,
the frame was SLX in steel and we produce it in the 1993
Thanks
thanks for your email,
the frame was SLX in steel and we produce it in the 1993
Thanks
Likes For 75lechamp:
#18
Senior Member
Join Date: May 2020
Location: Great White North
Posts: 1,226
Bikes: 2013 Cannondale Caad 8, 2010 Opus Fidelio, 1985 Peugeot UO14, 1999 Peugeot Dune, Sakai Select, L'Avantage, 1971 Gitane Apache Standard, 1999 Specialized Hard Rock
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 548 Post(s)
Liked 473 Times
in
302 Posts
Looking forward to seeing your progress on this build. Great foundation to work with.
#19
Junior Member
#20
Senior Member
Join Date: Oct 2015
Location: PDX
Posts: 13,061
Bikes: Merz x 5 + Specialized Merz Allez x 2, Strawberry/Newlands/DiNucci/Ti x3, Gordon, Fuso/Moulton x2, Bornstein, Paisley,1958-74 Paramounts x3, 3rensho, 74 Moto TC, 73-78 Raleigh Pro's x5, Marinoni x2, 1960 Cinelli SC, 1980 Bianchi SC, PX-10 X 2
Mentioned: 267 Post(s)
Tagged: 0 Thread(s)
Quoted: 4513 Post(s)
Liked 6,389 Times
in
3,674 Posts
You should be able to find some hard rubber or maybe even nylon/plastic rod to stick in there for bumpers. I would check scamazon and efbay first.
#22
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
Yes, it is! Which is good, since I can finally now use this subset!
Campy C-Record 32H
Campy C-Record 32H
#24
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
Maybe originally, but now it's 130, new axle and spacers...
#25
Full Member
Thread Starter
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 344
Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Liked 750 Times
in
172 Posts
C Record crank
I decided to go a slightly different direction, since the bike is already destined for the C-Record hubs..... I was inspired by Ray Dobbins' work on this '86 De Rosa and came up with this:
C Record crankset
After 180, 320, 400 grit....
After 1000, 2000, 3000, then the fabled Simichrome.... not perfect but not half bad. I think this will look pretty good on the De Rosa...
C Record crankset
After 180, 320, 400 grit....
After 1000, 2000, 3000, then the fabled Simichrome.... not perfect but not half bad. I think this will look pretty good on the De Rosa...
Likes For 75lechamp: