Silver State 508 on a tandem - need upgrade advice
#1
labeled rude by nOObs
Thread Starter
Join Date: Dec 2006
Location: San Marcos, CA
Posts: 2,359
Bikes: Tommasini Tecno, Pinarello Tandem, Milwaukee Bicycle Co. Fixed Gear, Serotta CSI Custom, Bianchi Campione del Monde, Cervelo P3 Carbon
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Silver State 508 on a tandem - need upgrade advice
Hello Everyone,
It has been awhile since I have posted on the forums. I am not ashamed to ask for advice on things I'm not that familiar about. I have a 2007 Pinarello tandem. I've done some long distance riding on it and some climbing centuries and doubles as well. I am looking to lighten it up before RAAM June 2015. We are doing 4X tandem relay.
One thing in particular I need advice is in converting the triple to a double. Currently I ride a triple with a 55/39/28 Sugino and 11-28 cassette. I hate the triple and since this hasn't been my primary bike I only had to deal with it every few months. But I will be riding this bike more regularly between now and June.
So my questions are:
how much lighter are 2X cranksets than 3X?
What brands make quality light 2X cranksets?
Does someone have a link to a chart with verified weights of these cranksets?
There are more questions I want to ask but let's start with the crankset.
It has been awhile since I have posted on the forums. I am not ashamed to ask for advice on things I'm not that familiar about. I have a 2007 Pinarello tandem. I've done some long distance riding on it and some climbing centuries and doubles as well. I am looking to lighten it up before RAAM June 2015. We are doing 4X tandem relay.
One thing in particular I need advice is in converting the triple to a double. Currently I ride a triple with a 55/39/28 Sugino and 11-28 cassette. I hate the triple and since this hasn't been my primary bike I only had to deal with it every few months. But I will be riding this bike more regularly between now and June.
So my questions are:
how much lighter are 2X cranksets than 3X?
What brands make quality light 2X cranksets?
Does someone have a link to a chart with verified weights of these cranksets?
There are more questions I want to ask but let's start with the crankset.
#2
Senior Member
Join Date: Jan 2010
Location: UK
Posts: 93
Bikes: Canyon Dura ace, Pinarello Asolo Super Record, Holdsworth Nuovo Record, Duratec Di2 Tandem, Brompton
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 2 Times
in
1 Post
Hello Everyone,
It has been awhile since I have posted on the forums. I am not ashamed to ask for advice on things I'm not that familiar about. I have a 2007 Pinarello tandem. I've done some long distance riding on it and some climbing centuries and doubles as well. I am looking to lighten it up before RAAM June 2015. We are doing 4X tandem relay.
One thing in particular I need advice is in converting the triple to a double. Currently I ride a triple with a 55/39/28 Sugino and 11-28 cassette. I hate the triple and since this hasn't been my primary bike I only had to deal with it every few months. But I will be riding this bike more regularly between now and June.
So my questions are:
how much lighter are 2X cranksets than 3X?
What brands make quality light 2X cranksets?
Does someone have a link to a chart with verified weights of these cranksets?
There are more questions I want to ask but let's start with the crankset.
It has been awhile since I have posted on the forums. I am not ashamed to ask for advice on things I'm not that familiar about. I have a 2007 Pinarello tandem. I've done some long distance riding on it and some climbing centuries and doubles as well. I am looking to lighten it up before RAAM June 2015. We are doing 4X tandem relay.
One thing in particular I need advice is in converting the triple to a double. Currently I ride a triple with a 55/39/28 Sugino and 11-28 cassette. I hate the triple and since this hasn't been my primary bike I only had to deal with it every few months. But I will be riding this bike more regularly between now and June.
So my questions are:
how much lighter are 2X cranksets than 3X?
What brands make quality light 2X cranksets?
Does someone have a link to a chart with verified weights of these cranksets?
There are more questions I want to ask but let's start with the crankset.
#3
labeled rude by nOObs
Thread Starter
Join Date: Dec 2006
Location: San Marcos, CA
Posts: 2,359
Bikes: Tommasini Tecno, Pinarello Tandem, Milwaukee Bicycle Co. Fixed Gear, Serotta CSI Custom, Bianchi Campione del Monde, Cervelo P3 Carbon
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
To be honest I was a bit in "shock and horror" as I read your post. Unless you are a 120kg/500 watt output uber competitive team, I can't see how the loss of 50g in a chainring is going to make a heap of difference? Lose the breakfast 3 days running before the comp and this will have more of an impact.
Lastly, I hate the way it shifts and I prefer 2X and want to explore the option of Di2 like on my single bikes.
So barkersoldbean unless you have something positive to contribute please stay off the thread.
#4
Senior Member
Join Date: Nov 2007
Location: Anchorage, Ak
Posts: 620
Bikes: 2015 Calfee Tetra tandem,2016 Calfee Tetra Adventure Tandem, Ventana ECDM 26 mtn tandem, Ventana ECDM 29r full suspension Mtn tandem ,Ventana Fat tire tandem, Calfee Dragon Fly, Santa Cruz Carbon 5010, 907 Whiteout fat tire
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 57 Post(s)
Likes: 0
Liked 6 Times
in
5 Posts
one of the lightest carbon tandem cranks are the Lightening cranks. You can configure them for standard or compact. We have had them for two years now and they have worked well. We use them with Ultegra DI2 and would never go back to mechanical shifting again.
#5
labeled rude by nOObs
Thread Starter
Join Date: Dec 2006
Location: San Marcos, CA
Posts: 2,359
Bikes: Tommasini Tecno, Pinarello Tandem, Milwaukee Bicycle Co. Fixed Gear, Serotta CSI Custom, Bianchi Campione del Monde, Cervelo P3 Carbon
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Thank you akexpress - would you happen to have weight you verified yourself?
#6
Senior Member
Join Date: Nov 2007
Location: Anchorage, Ak
Posts: 620
Bikes: 2015 Calfee Tetra tandem,2016 Calfee Tetra Adventure Tandem, Ventana ECDM 26 mtn tandem, Ventana ECDM 29r full suspension Mtn tandem ,Ventana Fat tire tandem, Calfee Dragon Fly, Santa Cruz Carbon 5010, 907 Whiteout fat tire
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 57 Post(s)
Likes: 0
Liked 6 Times
in
5 Posts
I will weight them when I return home on Tuesday as they are off the bike right now while I have some framework done. I will weight them with BB's so you have a true weight complete. Lightening uses their own BB's
#7
labeled rude by nOObs
Thread Starter
Join Date: Dec 2006
Location: San Marcos, CA
Posts: 2,359
Bikes: Tommasini Tecno, Pinarello Tandem, Milwaukee Bicycle Co. Fixed Gear, Serotta CSI Custom, Bianchi Campione del Monde, Cervelo P3 Carbon
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Thank you akepress!
#8
Senior Member
Join Date: Jan 2010
Location: UK
Posts: 93
Bikes: Canyon Dura ace, Pinarello Asolo Super Record, Holdsworth Nuovo Record, Duratec Di2 Tandem, Brompton
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 2 Times
in
1 Post
Apologies - was not meant to be offensive - just a bit of a light hearted comment that went awry. T
#9
pan y agua
Join Date: Aug 2005
Location: Jacksonville
Posts: 31,304
Bikes: Willier Zero 7; Merlin Extralight; Calfee Dragonfly tandem, Calfee Adventure tandem; Cervelo P2; Motebecane Ti Fly 29er; Motebecanne Phantom Cross; Schwinn Paramount Track bike
Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 1447 Post(s)
Liked 728 Times
in
373 Posts
take a look at how Paketa sets up their one sided drive trains.
If you can use a belt, the lightest setup is likely to be a single side drive, with a 2x10 (or 11), and the belt in place of the third ring.
You might need to run the belt on the outside of the crankset for chainstay clearence.
Paketa Custom Magnesium Bicycles :: V2r Superlight Racing Tandem Bicycle with Gates Carbon Belt Drive:: Best in show NAHBS best alternative material
If you can use a belt, the lightest setup is likely to be a single side drive, with a 2x10 (or 11), and the belt in place of the third ring.
You might need to run the belt on the outside of the crankset for chainstay clearence.
Paketa Custom Magnesium Bicycles :: V2r Superlight Racing Tandem Bicycle with Gates Carbon Belt Drive:: Best in show NAHBS best alternative material
__________________
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
#10
Senior Member
Join Date: Jan 2008
Location: Ft Worth, TX
Posts: 1,971
Bikes: Custom 650B tandem by Bob Brown, 650B tandem converted from Santana Arriva, Santana Noventa, Boulder Bicycle 700C, Gunnar Sport
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Likes: 0
Liked 4 Times
in
4 Posts
In the unlikely event that you are just concerned about shifting then the inner stop screw can instantly make your triple into a double and you can loose the inner ring too. Then you can just shift all the way in or out for front shifting your "double".
There is definitely some weight to save with a crankset upgrade, especially of you are willing to spend money on a whole new drive train. If you are going to spend a lot of money, then consider upgrading the wheels and tires. That is often a relatively good way to go to save weight and/or make aero gains.
For us I doubt it would make much difference as long as the drive train is shifting well but if you want to go that route then my vote is for wheels then cranks.
On a pure weight saving side, dummy stoker hoods usually run 1/2 pound or so. Lighter stoker bars without hoods is a cheap way to save weight IF the stoker agrees.
There is definitely some weight to save with a crankset upgrade, especially of you are willing to spend money on a whole new drive train. If you are going to spend a lot of money, then consider upgrading the wheels and tires. That is often a relatively good way to go to save weight and/or make aero gains.
For us I doubt it would make much difference as long as the drive train is shifting well but if you want to go that route then my vote is for wheels then cranks.
On a pure weight saving side, dummy stoker hoods usually run 1/2 pound or so. Lighter stoker bars without hoods is a cheap way to save weight IF the stoker agrees.
Last edited by waynesulak; 10-13-14 at 03:10 PM.
#11
Senior Member
Join Date: Jul 2012
Location: San Jose, CA
Posts: 56
Bikes: Team Scandium/ Sovereign
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked 0 Times
in
0 Posts
I'll echo what was said above about the belt drive conversion. We saved half a pound.