Campag biopace?
07-18-13, 01:14 PM
#1
Senior Member
Thread Starter
Campag biopace?
Reading a bicycle book when the author mentions non round chainrings, the illustration shows a campagnolo crankset. Did campag make non round chainrings, I have looked but can't find any info. 
07-19-13, 02:43 AM
#3
Bianchi Goddess
Join Date: Apr 2009
Location: Shady Pines Retirement Fort Wayne, In
Posts: 27,858
Bikes: Too many to list here check my signature.
Mentioned: 192 Post(s)
Tagged: 2 Thread(s)
Quoted: 2930 Post(s)
Liked 2,923 Times
in
1,491 Posts
I never heard of not that means much there is a lot of bike stuff I never heard of. Judging from the looks of that pics it seem like whoever drew it never saw a crankset before. Even if Campagnolo did make biopace type chainwheels I doubt they would make the arms different lengths. Shimano and Suntour both used 130mm road and 110 mountain BCD for their oval rings.
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
07-19-13, 04:42 AM
#4
multimodal commuter
Join Date: Nov 2006
Location: NJ, NYC, LI
Posts: 19,808
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
Mentioned: 584 Post(s)
Tagged: 0 Thread(s)
Quoted: 1908 Post(s)
Liked 574 Times
in
339 Posts
Let's not overlook the fact that the scan is pretty distorted!
07-19-13, 07:27 AM
#6
Senior Member
Join Date: Jun 2012
Location: Stillwater, OK
Posts: 7,827
Mentioned: 33 Post(s)
Tagged: 0 Thread(s)
Quoted: 1872 Post(s)
Liked 692 Times
in
468 Posts
The scan isn't the important thing, it's the wording of the sentence right before the picture. Unless they distorted a Campy picture to show an oval chainring.. I guess that is possible.
__________________
2014 Cannondale SuperSix EVO 2
2019 Salsa Warbird
2014 Cannondale SuperSix EVO 2
2019 Salsa Warbird
07-19-13, 08:00 AM
#7
Senior Member
Join Date: Apr 2005
Location: Wherever
Posts: 16,748
Mentioned: 92 Post(s)
Tagged: 0 Thread(s)
Quoted: 556 Post(s)
Likes: 0
Liked 132 Times
in
78 Posts
I've not heard of everything of course, but never heard of oval Campy crank and rings.
Maybe it's a printing snafu and they meant to show the Shimano unit?
Maybe it's a printing snafu and they meant to show the Shimano unit?
07-19-13, 08:21 AM
#8
Senior Member
Elefante shifter?! do tell, do tell!
__________________
Check out www.djcatnap.com for articles on vintage Japanese & French bicycle restorations, components and history.
Check out www.djcatnap.com for articles on vintage Japanese & French bicycle restorations, components and history.
07-19-13, 10:17 AM
#9
Cisalpinist
Join Date: Jan 2011
Location: Holland
Posts: 5,557
Bikes: blue ones.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Likes: 0
Liked 16 Times
in
11 Posts
https://www.velobase.com/ViewComponen...8-c148d79abf55
I have yet to meet someone who has one or has seen one outside of this particular catalog.
I have yet to meet someone who has one or has seen one outside of this particular catalog.
07-19-13, 12:52 PM
#10
multimodal commuter
Join Date: Nov 2006
Location: NJ, NYC, LI
Posts: 19,808
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
Mentioned: 584 Post(s)
Tagged: 0 Thread(s)
Quoted: 1908 Post(s)
Liked 574 Times
in
339 Posts
! I meant i think Bianchigirl suggested the spider arms might be of different lengths, which I really doubt. I nave never heard of campy rings in a non-round configuration, but if they ever existed I am sure they had a circular bolt circle, whether 144 or 135 or whatever.
Last edited by rhm; 07-19-13 at 01:31 PM.
07-19-13, 01:26 PM
#11
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
https://www.velobase.com/ViewComponen...8-c148d79abf55
I have yet to meet someone who has one or has seen one outside of this particular catalog.
I have yet to meet someone who has one or has seen one outside of this particular catalog.
07-19-13, 01:32 PM
#13
Senior Member
Join Date: Jun 2012
Location: Stillwater, OK
Posts: 7,827
Mentioned: 33 Post(s)
Tagged: 0 Thread(s)
Quoted: 1872 Post(s)
Liked 692 Times
in
468 Posts
All true. But you mistook my meaning ! I meant i think Bianchigirl suggested the spider arms might be of different lengths, which I really doubt. I nave never heard of campy rings in a non-round configuration, but if they ever existed I am sure they had a circular bolt circle, whether 144 or 135 or whatever.
! I meant i think Bianchigirl suggested the spider arms might be of different lengths, which I really doubt. I nave never heard of campy rings in a non-round configuration, but if they ever existed I am sure they had a circular bolt circle, whether 144 or 135 or whatever.
__________________
2014 Cannondale SuperSix EVO 2
2019 Salsa Warbird
2014 Cannondale SuperSix EVO 2
2019 Salsa Warbird
07-19-13, 03:38 PM
#14
Senior Member
Thread Starter
07-19-13, 03:41 PM
#15
Senior Member
Thread Starter
07-19-13, 03:43 PM
#16
Senior Member
Thread Starter
I never heard of not that means much there is a lot of bike stuff I never heard of. Judging from the looks of that pics it seem like whoever drew it never saw a crankset before. Even if Campagnolo did make biopace type chainwheels I doubt they would make the arms different lengths. Shimano and Suntour both used 130mm road and 110 mountain BCD for their oval rings.
07-19-13, 03:56 PM
#17
Cisalpinist
Join Date: Jan 2011
Location: Holland
Posts: 5,557
Bikes: blue ones.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Likes: 0
Liked 16 Times
in
11 Posts
Batchelor's work is amazing. Still, the mystery remains! Can you make out on the pic if there are any dimension mentioned near the lines overlaid on the chainset drawing?
07-19-13, 04:07 PM
#18
Senior Member
Thread Starter
I have had a look, the big chainring is a 54t. I cant make out the little, That's is as much info as is provided.
07-19-13, 04:15 PM
#19
Groupetto Dragon-Ass
Join Date: May 2005
Location: Lostin Austin, TX
Posts: 616
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 414 Post(s)
Liked 785 Times
in
371 Posts
And it is still there, page 83 of Richard's 21st Century Bicycle Book!
OVAL rings from Highpath Engineering
https://www.highpath.net/highpath/cycles/ovals/01.html
That explains the odd degree offset dimension in the original illustration
(product now discontinued)
OVAL rings from Highpath Engineering
https://www.highpath.net/highpath/cycles/ovals/01.html
That explains the odd degree offset dimension in the original illustration
(product now discontinued)
Last edited by Chuckk; 07-19-13 at 04:25 PM.
07-19-13, 04:37 PM
#20
Cisalpinist
Join Date: Jan 2011
Location: Holland
Posts: 5,557
Bikes: blue ones.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Likes: 0
Liked 16 Times
in
11 Posts
Maybe the Campagnolo shield on the ring is a form of artistic licence on an otherwise aftermarket non-round chain ring. Can't remember Campagnolo stamping their chainring with the shield logo anyway.
07-19-13, 05:07 PM
#21
Senior Member
Thread Starter
I had a closer look but it isn't a campag logo (oops) from what I can make out it says: dolchloper or rolchloper ?
07-19-13, 06:06 PM
#22
Senior Member
Join Date: Apr 2005
Location: Wherever
Posts: 16,748
Mentioned: 92 Post(s)
Tagged: 0 Thread(s)
Quoted: 556 Post(s)
Likes: 0
Liked 132 Times
in
78 Posts
Dolschloper!? How about Doppleganger? 'Cause that's a dead ringer rip off of the Campy shield logo, not to mention the design of the crank itself. Or very close. Interesting as heck. Anybody ever heard of that brand?
07-20-13, 06:58 PM
#23
Ride, Wrench, Swap, Race
Join Date: Jan 2010
Location: Northern California
Posts: 9,193
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
Mentioned: 132 Post(s)
Tagged: 0 Thread(s)
Quoted: 1565 Post(s)
Liked 1,295 Times
in
865 Posts
How's this for weird? :
The ring is a production Campag ring, custom-reshaped (per international patent) by Edmund Polchlopek, a pioneer in time-trial bikes and funnybikes.
Polchlopek, a Frenchman, was a cutting-edge innovator near the early-1980's.
I bought one of his bikes five years ago, oddly labeled only as "POLCH" in bold, shadowed letters along the downtube.
The frame was lugged/brazed from MacSteel composite, a butted aircraft steel tubing with wall thickness of only .25mm along the center!
The central section of each main-tube is internally reinforced with bonded-in carbon.
It took me quite a while to figure out why the seatpost wouldn't drop fully into the seat tube, until months later when an Ebay ad for a conventional bike labeled "Polchlopek" caught my eye, at which point I had a complete spelling of the builder's name and so was able to Google the name.
My bike doesn't feature the re-formed chainrings, likely it is a later model. The bars are drilled for aero cabling.
The geometry is pure "multisport", time-trial or triathlon, with a very steep seat tube and very shallow head tube angle.
The wheels feature 28h Wolber aero rims on Record high-flange hubs.
Edmund Polchlopek died in a car crash around ten years ago, in France.
His other, more-radical frames pioneered a transitionless aerodynamic blending of the seat tube to the rear tire.
BikeForums member Joe Englert has since given me a bike magazine featuring an ad for these bikes, and other pic's and info can be found online: See: https://equusbicycle.com/bike/bicycles/bicycles.htm
The ring is a production Campag ring, custom-reshaped (per international patent) by Edmund Polchlopek, a pioneer in time-trial bikes and funnybikes.
Polchlopek, a Frenchman, was a cutting-edge innovator near the early-1980's.
I bought one of his bikes five years ago, oddly labeled only as "POLCH" in bold, shadowed letters along the downtube.
The frame was lugged/brazed from MacSteel composite, a butted aircraft steel tubing with wall thickness of only .25mm along the center!
The central section of each main-tube is internally reinforced with bonded-in carbon.
It took me quite a while to figure out why the seatpost wouldn't drop fully into the seat tube, until months later when an Ebay ad for a conventional bike labeled "Polchlopek" caught my eye, at which point I had a complete spelling of the builder's name and so was able to Google the name.
My bike doesn't feature the re-formed chainrings, likely it is a later model. The bars are drilled for aero cabling.
The geometry is pure "multisport", time-trial or triathlon, with a very steep seat tube and very shallow head tube angle.
The wheels feature 28h Wolber aero rims on Record high-flange hubs.
Edmund Polchlopek died in a car crash around ten years ago, in France.
His other, more-radical frames pioneered a transitionless aerodynamic blending of the seat tube to the rear tire.
BikeForums member Joe Englert has since given me a bike magazine featuring an ad for these bikes, and other pic's and info can be found online: See: https://equusbicycle.com/bike/bicycles/bicycles.htm
Last edited by dddd; 07-20-13 at 07:33 PM.
07-20-13, 07:08 PM
#24
Senior Member
Thread Starter
It was incredible small writing and the logo is just slightly different, Couldn't find anything on the name.
07-20-13, 07:11 PM
#25
Senior Member
Thread Starter