Three piece cranks
12-20-01, 05:11 PM
#1
Senior Member
Thread Starter
Join Date: Feb 2001
Posts: 306
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Three piece cranks
What is the advange of three piece cranks. Is it weight? The whole converter unit along with the crank itself seems heavier than the one piece crank. Is it strength? It's hard to believe that a solid chunk of steel isn't as strong as alloy and it doesn't have a problem with stripped tapers or splines. The pros ride three piece cranks, so what am I missing?
12-20-01, 05:22 PM
#2
Senior Member
Join Date: Mar 2000
Location: Parrish, FL
Posts: 7,963
Bikes: Lots
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Stiffness and maintenance. One Piece cranks regardless of what material they're made of will flex. Why? I dunno. Probably because they are bent or cast or both. Also, taking one apart is a pain in the arse. Changing your gearing means taking apart, although spiders are available. Another reason would probably be weight! Those one-piecers can be used for small boat anchors. My best guess (and logic) would lean me toward the weight issue.
I really don't know for sure, but I imagine the "coolness factor" has a little to do with it as well!
Nah, I imagine it has to do with the aluminum being light where it can be and the seperate bb is strong torsionally. Combine the two and whala! 3 piece cranks!
L8R
I really don't know for sure, but I imagine the "coolness factor" has a little to do with it as well!
Nah, I imagine it has to do with the aluminum being light where it can be and the seperate bb is strong torsionally. Combine the two and whala! 3 piece cranks!
L8R
__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger
12-20-01, 08:45 PM
#3
Senior Member
Join Date: Dec 2001
Location: Downey, CA.
Posts: 1,166
Bikes: Litespeed Classic (55cm), Specialized Tarmac Pro (56cm)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 6 Times
in
4 Posts
Hey a2psyklnut,
I thought you were leaving? Not that I want you gone, but what happened? IT department change their mind?
BTW, welcome back.
I thought you were leaving? Not that I want you gone, but what happened? IT department change their mind?
BTW, welcome back.
__________________
Litespeed, lasts a lifetime.
Specialized Tarmac, lasts a lifetime, or until it breaks.
Litespeed, lasts a lifetime.
Specialized Tarmac, lasts a lifetime, or until it breaks.
12-24-01, 08:33 PM
#6
Junior Member
Join Date: Dec 2001
Posts: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
if you look at the bends of a 1 piece crank, you'll notice how thin and weak it looks. 3 piece cranks eliminate this weakness, plus they are lighter. another thing is, if you bend an arm on 1piece cranks, you have to buy a whole new set of cranks, whereas with 3 piece cranks you can just buy a new arm.
03-17-02, 08:14 PM
#8
feros ferio
Join Date: Jul 2000
Location: www.ci.encinitas.ca.us
Posts: 21,798
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;
Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 1393 Post(s)
Liked 1,325 Times
in
837 Posts
Look also at the respective cross-sectional areas; all else being equal, larger means stiffer.
__________________
"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
03-18-02, 10:34 AM
#9
Junior Member
Join Date: Jan 2002
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
One piece cranks help keeps the price down on complete bikes. There are so many cranks on the market today so a little research can save you a lot of money. Profile racing makes a great crank system. They offer four series of cranks: 1) BMX Race 2) DJ or Dirt Jumping, 3) SS which are a very well built crank 4) MTB Cranks. Profile racing has been in the business for over 25 years, and they do know cranks. You may want to check out their website: www.profileracing.com
04-02-02, 10:11 AM
#10
Member
Join Date: Apr 2002
Location: Central NY USA
Posts: 41
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
no matter what you do your 1 pc crank is going to bend 3 pcs are a lot stronger and a lot stffer not to mention they look a lot better too the pros ride them because they are stronger they might be heavier but in the long run you will be better off with a 3 pc
d130 rules:confused: ^^^^^
d130 rules:confused: ^^^^^
04-03-02, 09:55 AM
#11
Junior Member
Join Date: Mar 2002
Location: Delaware
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
just get a set of profile ss oversized cranks and your set nothing else needed (maybe a sporcket chainring whatever u want to call it and pedals too if u have cheap ones)
