Power meter for Trek Checkpoint

Especially for light weight issues concerning cyclocross / touring bikes & parts.

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LanceLegstrong
Posts: 49
Joined: Fri Sep 13, 2019 1:35 pm

by LanceLegstrong

I have a Checkpoint ALR4 that I'd like to get a power meter for, but it has the worst crank clearance on the left side, so I'm not sure I can fit a power meter there. I know that Power2max has some options but I'd have to get new cranks. And Pioneer has some right sided only options. Any others?

by Weenie


jlok
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Joined: Tue Jun 30, 2015 3:30 am

by jlok

Litespeed T1sl Disc / BMC TM02 < Giant Propel Advanced SL Disc 1 < Propel Adv < TCR Adv SL Disc < KTM Revelator Sky < CAAD 12 Disc < Domane S Disc < Alize < CAAD 10

jfranci3
Posts: 760
Joined: Tue Jul 26, 2016 5:21 pm

by jfranci3

Just space out a Stages/4iiiiiiiiiiiiiii with shims. https://amzn.to/2mWzcWt

I think the 4iiiiiiiiiiii rechargeable is the thinnest of the Shimano crankarm units.

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Curious George
Posts: 264
Joined: Fri Sep 08, 2006 11:48 am

by Curious George

I have a Checkpoint and am running a Stages R due to the lack of clearance.

LanceLegstrong
Posts: 49
Joined: Fri Sep 13, 2019 1:35 pm

by LanceLegstrong

jlok wrote:
Wed Sep 25, 2019 1:23 am
SRM MTB Pedals PM?
https://www.dcrainmaker.com/2019/09/srm ... r-srm.html
Looks nice, but way out of my budget.

LanceLegstrong
Posts: 49
Joined: Fri Sep 13, 2019 1:35 pm

by LanceLegstrong

Curious George wrote:
Wed Sep 25, 2019 5:57 am
I have a Checkpoint and am running a Stages R due to the lack of clearance.
How do you like the Stages? I've heard mixed reviews of them in recent years. Though them and Power2Max seem to be the only options.

GPLama had this video about them, and specifiaclly the right sided Shimano crank-based ones: https://www.youtube.com/watch?v=M0tWTUwpt1k.
Last edited by LanceLegstrong on Thu Sep 26, 2019 3:38 pm, edited 1 time in total.

LanceLegstrong
Posts: 49
Joined: Fri Sep 13, 2019 1:35 pm

by LanceLegstrong

So it looks like 4iiii also makes a right side power meter like Stages. Price for 4iiii is $600 to retrofit my 105 cranks. Price for Stages is $650 with Ultegra cranks. Is the Stages the better deal?

kafreeman
Posts: 120
Joined: Thu Jul 23, 2015 8:46 pm

by kafreeman

Wait for black Friday and see what p2max offers.

I picked up a rotor 3d24 crank meter and rings for about 650 last year.

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jfranci3
Posts: 760
Joined: Tue Jul 26, 2016 5:21 pm

by jfranci3

This Garmin sensor is 8mm thick. A 4iiiiiiiiiiii rechargeable is 7mm thick. With 2mm of shims, you should be fine.
https://forums.garmin.com/sports-fitnes ... -won-t-fit

If you can't space it, maybe run an MTB arm on one side and a 10mm pedal spacer on the other.

The Rotor 3d24s are gone. I think you need to go FSA or SRAM to avoid paying a bit more for the newer Rotor version. Another option is a used Quarq or P2M with a SRAM / Quarq GXP crank. There are old quarqs everywhere that work fine. The best PM deals are usually on Facebook - search photos and then limit the search to the current month.

LanceLegstrong
Posts: 49
Joined: Fri Sep 13, 2019 1:35 pm

by LanceLegstrong

jfranci3 wrote:
Thu Sep 26, 2019 4:15 am
This Garmin sensor is 8mm thick. A 4iiiiiiiiiiii rechargeable is 7mm thick. With 2mm of shims, you should be fine.
https://forums.garmin.com/sports-fitnes ... -won-t-fit

If you can't space it, maybe run an MTB arm on one side and a 10mm pedal spacer on the other.

The Rotor 3d24s are gone. I think you need to go FSA or SRAM to avoid paying a bit more for the newer Rotor version. Another option is a used Quarq or P2M with a SRAM / Quarq GXP crank. There are old quarqs everywhere that work fine. The best PM deals are usually on Facebook - search photos and then limit the search to the current month.
And that won't mess with the crank fitting?

jfranci3
Posts: 760
Joined: Tue Jul 26, 2016 5:21 pm

by jfranci3

Welp... The pratical limiter would the crankarm lateral bolt (fixing), you're OK. I think the latest ones are 16mm deep or so. Trek on their carbon bikes already spaces the arm out +2mm on each side vs your BB86 fitting. You'd create a bit more lateral axis load on your non-drive BB bearing, but this isn't going to radically alter anything. +2mm is what you'd see going from a normal bearing seal on the BB bearing to a thick one like Wheelsmfg or BBInfinite sell. Shimano sells 6.5, 3, 2.5, and 2mm spacers for hollowtech II. Also, I think a common wave spring is 3mm. So spindle width wise, you should be fine, shimano infers it's OK, and you're not going to put a lot of off-axis load on your non-drive bearing moving it out a few MM.


2mm would be nothing.

LanceLegstrong
Posts: 49
Joined: Fri Sep 13, 2019 1:35 pm

by LanceLegstrong

jfranci3 wrote:
Thu Sep 26, 2019 5:20 pm
Welp... The pratical limiter would the crankarm lateral bolt (fixing), you're OK. I think the latest ones are 16mm deep or so. Trek on their carbon bikes already spaces the arm out +2mm on each side vs your BB86 fitting. You'd create a bit more lateral axis load on your non-drive BB bearing, but this isn't going to radically alter anything. +2mm is what you'd see going from a normal bearing seal on the BB bearing to a thick one like Wheelsmfg or BBInfinite sell. Shimano sells 6.5, 3, 2.5, and 2mm spacers for hollowtech II. Also, I think a common wave spring is 3mm. So spindle width wise, you should be fine, shimano infers it's OK, and you're not going to put a lot of off-axis load on your non-drive bearing moving it out a few MM.


2mm would be nothing.
Good to know, thanks.

jfranci3
Posts: 760
Joined: Tue Jul 26, 2016 5:21 pm

by jfranci3

Also, I don't know if you've seen the MTB pedal hack if 2-bolt pedals are your thing - https://forum.trainerroad.com/t/a-wild- ... s/18627/24

LanceLegstrong
Posts: 49
Joined: Fri Sep 13, 2019 1:35 pm

by LanceLegstrong

jfranci3 wrote:
Fri Sep 27, 2019 10:25 pm
Also, I don't know if you've seen the MTB pedal hack if 2-bolt pedals are your thing - https://forum.trainerroad.com/t/a-wild- ... s/18627/24
That's pretty awesome. And now want to try it. With the UNO it'd be a lot less $ than the Rotor/P2M option.

jfranci3
Posts: 760
Joined: Tue Jul 26, 2016 5:21 pm

by jfranci3

Well, plus you’d have a road / non-road / travel option as the mood changes.

by Weenie


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