Power meter compatability for old(ish) bike
07-13-21, 10:03 PM
#1
Newbie
Thread Starter
Join Date: Jul 2021
Posts: 1
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Power meter compatability for old(ish) bike
Hi all. I'm not very clued up on all things bikes / parts - I just get on the saddle, pedal hard and pay a fortune for new stuff every once in a while. After selling my old vector pedals around 4 years ago, I've been powerless for a while and I'm now looking to dive back in. The issue is, I haven't a clue how to determine whether my current bike is compatible with the various options out there. I don't want to go back to pedals (bad memories with the vectors), and like the look of the 4iiii left only crank, and the quarq dzero spider after some desktop research.... I want something pretty cheap and I'm not fussed about super-precise accuracy... just something that works easily (connectivity, durability).
The bike I want to add power to is a Trek Domane Six Series. Think it's a 2015/6 model. Dura Ace (not sure which model exactly, says FC-9000 on inside of the crank), with no mods other than new wheels. Does that give you enough info on the bike to provide me with some recommendations on which power meter I can buy that meets my needs? Any advice greatly appreciated.
The bike I want to add power to is a Trek Domane Six Series. Think it's a 2015/6 model. Dura Ace (not sure which model exactly, says FC-9000 on inside of the crank), with no mods other than new wheels. Does that give you enough info on the bike to provide me with some recommendations on which power meter I can buy that meets my needs? Any advice greatly appreciated.
07-13-21, 11:59 PM
#2
Obsessed with Eddington
Join Date: Jun 2013
Location: Brussels (BE) 🇧🇪
Posts: 1,330
Bikes: '16 Spesh Diverge, '14 Spesh Fatboy, '18 Spesh Epic, '18 Spesh SL6, '21 Spesh SL7, '21 Spesh Diverge...and maybe n+1?
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 532 Post(s)
Liked 621 Times
in
368 Posts
The simplest (and probably least expensive in the long run) solution would be a 4iii or Stages R9100 LS crank arm. It'll take less than 5 minutes to install, with no special tools other than a crank-arm cap tool.
Likes For Badger6:
07-14-21, 02:24 AM
#3
Senior Member
Join Date: May 2021
Posts: 8,377
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 4386 Post(s)
Liked 4,827 Times
in
2,983 Posts
07-14-21, 05:38 AM
#4
Senior Member
Join Date: Aug 2010
Location: WNY
Posts: 3,098
Bikes: Factor O2, Caad10, Caad2
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 365 Post(s)
Liked 122 Times
in
78 Posts
Another possibility is power based pedals. There are still some deals to be had on the Garmin Vectors. These can also be switched to nearly any other bike.
https://www.westernbikeworks.com/search?kw2=vector
https://www.westernbikeworks.com/search?kw2=vector
07-14-21, 11:03 AM
#5
Senior Member
Join Date: Aug 2009
Location: Minneapolis
Posts: 5,750
Bikes: 2022 Salsa Beargrease Carbon Deore 11, 2020 Salsa Warbird GRX 600, 2020 Canyon Ultimate CF SLX disc 9.0 Di2, 2020 Catrike Eola, 2016 Masi cxgr, 2011, Felt F3 Ltd, 2010 Trek 2.1, 2009 KHS Flite 220
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 4365 Post(s)
Liked 3,001 Times
in
1,854 Posts
Another possibility is power based pedals. There are still some deals to be had on the Garmin Vectors. These can also be switched to nearly any other bike.
https://www.westernbikeworks.com/search?kw2=vector
https://www.westernbikeworks.com/search?kw2=vector
07-14-21, 11:13 AM
#6
Senior Member
Join Date: Sep 2008
Posts: 781
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 479 Post(s)
Liked 277 Times
in
156 Posts
2014 is old?! ;-) I have a Stages left side PM on my 1998 Klein single speed. The Stages has been great. I actually bought the dual-sided crankset (chainset for you Brits) and move the left side crank around. I've only heard good things about the 4iii too.
07-14-21, 11:33 AM
#7
Senior Member
Join Date: Jul 2002
Location: Sacramento, California, USA
Posts: 40,865
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
Mentioned: 68 Post(s)
Tagged: 0 Thread(s)
Quoted: 2952 Post(s)
Liked 3,106 Times
in
1,417 Posts
I have a Stages left arm PM on my old Ridley. See here: https://store.stagescycling.com/STAGES-POWER-L-105-5800
The Shimano ones are cross compatible with all Hollowtech II cranks, including first gen DA 7800, which is what I have. Works great.
Here's the one that matches yours: $250. A total bargain. https://store.stagescycling.com/STAG...DURA-ACE-R9000
The Shimano ones are cross compatible with all Hollowtech II cranks, including first gen DA 7800, which is what I have. Works great.
Here's the one that matches yours: $250. A total bargain. https://store.stagescycling.com/STAG...DURA-ACE-R9000
Last edited by caloso; 07-14-21 at 11:38 AM.
Likes For caloso:
07-14-21, 12:08 PM
#8
Obsessed with Eddington
Join Date: Jun 2013
Location: Brussels (BE) 🇧🇪
Posts: 1,330
Bikes: '16 Spesh Diverge, '14 Spesh Fatboy, '18 Spesh Epic, '18 Spesh SL6, '21 Spesh SL7, '21 Spesh Diverge...and maybe n+1?
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 532 Post(s)
Liked 621 Times
in
368 Posts
@millwaj78, the link provided to the stages is indeed a great deal, but since R9000 is now 5(or is it 6) years old, don't dawdle. And At $250, that is a smoking deal!
Likes For Badger6:
07-14-21, 12:44 PM
#9
Senior Member
Join Date: Aug 2009
Posts: 1,297
Bikes: Too many.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 92 Post(s)
Liked 174 Times
in
86 Posts
Or you could get a PowerTap hub and lace it to a rim of your choosing. That's my current power metering solution, so I definitely would prefer a pedal or spider-based system.
__________________
07-14-21, 12:48 PM
#10
Not actually Tmonk
Join Date: Jun 2007
Location: San Diego, CA
Posts: 14,089
Bikes: road, track, mtb
Mentioned: 140 Post(s)
Tagged: 0 Thread(s)
Quoted: 2611 Post(s)
Liked 3,128 Times
in
1,645 Posts
I just switched to pedals (Favero Assioma Duo) after being a powertab hub user for about 10 years. Love 'em. I do highly recommend.
The ptap is a great product that met my needs for a long time. I switched b/c I wanted to ride with power using race wheels on my time trial bike, be able to more easily swap the meter between differently configured bikes, and just enjoy some nicer wheels for my daily driver training bike (Giant TCR).
The ptap is a great product that met my needs for a long time. I switched b/c I wanted to ride with power using race wheels on my time trial bike, be able to more easily swap the meter between differently configured bikes, and just enjoy some nicer wheels for my daily driver training bike (Giant TCR).
__________________
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste
Likes For TMonk:
07-14-21, 03:13 PM
#11
Senior Member
Join Date: Jul 2002
Location: Sacramento, California, USA
Posts: 40,865
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
Mentioned: 68 Post(s)
Tagged: 0 Thread(s)
Quoted: 2952 Post(s)
Liked 3,106 Times
in
1,417 Posts
The Shimano-Stages set-up is also super quick and easy to switch between bikes. I will swap it from my TT bike to my road bike that lives on the trainer in about 5 minutes. Just takes a 5mm hex wrench and an end cap tool.
The only limitation is that you'll have to have similar gearing. With pedals, like TMonk has, it could be completely different configurations.
The only limitation is that you'll have to have similar gearing. With pedals, like TMonk has, it could be completely different configurations.
Likes For caloso:
07-15-21, 12:59 AM
#12
Senior Member
Join Date: Jun 2021
Location: Australia
Posts: 823
Bikes: 2002 Trek 5200 (US POSTAL), 2020 Canyon Aeroad SL
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 313 Post(s)
Liked 679 Times
in
327 Posts
Can you even still buy PowerTap hubs?
I've got a PowerTap G3 that has always been solid, more bombproof than the wheel it's built into! Lacing one to a custom rim of your choice would be a solid option if you can find one.
07-15-21, 05:58 AM
#13
Senior Member
Join Date: Apr 2021
Posts: 4,083
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 2332 Post(s)
Liked 2,097 Times
in
1,314 Posts
SRAM killed Powertap G3
It was probably the cheapest and most accurate PM, plus you get the benefit of a speed sensor
I have eyeballed the Rotor in-power cranks.
It was probably the cheapest and most accurate PM, plus you get the benefit of a speed sensor
I have eyeballed the Rotor in-power cranks.
07-15-21, 06:05 AM
#14
Should Be More Popular
Join Date: Dec 2007
Location: Malvern, PA (20 miles West of Philly)
Posts: 43,027
Bikes: 1986 Alpine (steel road bike), 2009 Ti Habenero, 2013 Specialized Roubaix
Mentioned: 560 Post(s)
Tagged: 2 Thread(s)
Quoted: 22572 Post(s)
Liked 8,918 Times
in
4,152 Posts
I "get" that you don't want a pedal-based system based on your previous experience. That said, many of my friends have Assioma pedals are positively LOVE them. That goes for single and double sided.
If you are positive you don't want a pedal system and are on a budget, get a 4iiii or Stages single-sided crank that is compatible with your current setup.
If you are positive you don't want a pedal system and are on a budget, get a 4iiii or Stages single-sided crank that is compatible with your current setup.
07-16-21, 02:26 PM
#15
Senior Member
Join Date: Aug 2009
Posts: 1,297
Bikes: Too many.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 92 Post(s)
Liked 174 Times
in
86 Posts
They're out there in used land. I'd assume that they are no longer available new. But when maintained properly they seem to be pretty bulletproof.
__________________
