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!

by Weenie


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

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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