THM Calvicula SE Crank vs Dura Ace 9000

Discuss light weight issues concerning road bikes & parts.
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eforce123
Posts: 128
Joined: Sun Apr 08, 2018 9:27 pm

by eforce123

I ride with Dura ace mechanical and I was curious if I would notice a difference if I switched to Calvicula SE as its almost half the weight? It seems many people on here run the THM crank on all their bikes. Let me know, thanks!

spdntrxi
Posts: 3820
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

it makes your overall bike lighter... but my legs at the pedels dont feel any different.
2019 BMC TM01 Road UCI config 7.36kg

by Weenie


tabl10s
Posts: 675
Joined: Wed Aug 23, 2017 5:40 am

by tabl10s

Looks 😎er.
2015 Pinarello F8: 13.13lbs/5.915kg(w/Roval 64's).
2016 Rca: 11.07lbs/5.048kg.
2018 Rca.
2018 S-Works SL6 Ultralight: 12.03lbs.

alcatraz
Posts: 3182
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Unless you have a frame that supports 6806 bearings going to 30mm spindle like on the thm would be a downgrade.

spdntrxi
Posts: 3820
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

alcatraz wrote:
Fri Oct 11, 2019 11:47 pm
Unless you have a frame that supports 6806 bearings going to 30mm spindle like on the thm would be a downgrade.
isn't that BB30 bearing size ? .... which I have used for many years with M3, Classic and now SE cranks... but I just got a BB86 frame that I am using a SE cranks with.. I know not the ideal bb standard for 30mm ID.. but I check it often and so far it's very smooth still.
2019 BMC TM01 Road UCI config 7.36kg

rollinslow
Posts: 361
Joined: Fri Dec 21, 2018 2:25 am

by rollinslow

FWIW, the main reason I didn't do it is because the Chris King ceramic BB is better than the THM one in my opinion.
Moots Vamoots RSL (2019)-Dura Ace 9100
Cervelo S1 (2010)-Super Record 12 (viewtopic.php?f=10&t=161577)
Kestrel RT700 (2008)-Dura Ace 9000
Mosaic GT-1 (2020)-in build queue

alcatraz
Posts: 3182
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

spdntrxi wrote:
Sat Oct 12, 2019 12:52 am
alcatraz wrote:
Fri Oct 11, 2019 11:47 pm
Unless you have a frame that supports 6806 bearings going to 30mm spindle like on the thm would be a downgrade.
isn't that BB30 bearing size ? .... which I have used for many years with M3, Classic and now SE cranks... but I just got a BB86 frame that I am using a SE cranks with.. I know not the ideal bb standard for 30mm ID.. but I check it often and so far it's very smooth still.
Lets just say the bearing size of a bb86 shell with 30mm crank is a compromise. Balls and/or races need to be undersized relative to other setups.

spdntrxi
Posts: 3820
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

alcatraz wrote:
Sat Oct 12, 2019 4:23 am
spdntrxi wrote:
Sat Oct 12, 2019 12:52 am
alcatraz wrote:
Fri Oct 11, 2019 11:47 pm
Unless you have a frame that supports 6806 bearings going to 30mm spindle like on the thm would be a downgrade.
isn't that BB30 bearing size ? .... which I have used for many years with M3, Classic and now SE cranks... but I just got a BB86 frame that I am using a SE cranks with.. I know not the ideal bb standard for 30mm ID.. but I check it often and so far it's very smooth still.
Lets just say the bearing size of a bb86 shell with 30mm crank is a compromise. Balls and/or races need to be undersized relative to other setups.
no doubt... I expect to be replacing them more often.
2019 BMC TM01 Road UCI config 7.36kg

eforce123
Posts: 128
Joined: Sun Apr 08, 2018 9:27 pm

by eforce123

I ride a 2014 Evo hi mod

by Weenie


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