Back by popular demand, the general all-things Road forum!
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kafreeman
- Posts: 170
- Joined: Thu Jul 23, 2015 8:46 pm
by kafreeman on Mon Dec 10, 2018 4:00 am
dcorn wrote:drexel75 wrote: ↑Wed Dec 05, 2018 6:52 pm
dcorn wrote: ↑Wed Dec 05, 2018 6:18 pm
Just to update this thread, the ALDHU crank is now available with a 24mm spindle that is a direct replacement for Shimano cranks, plus Power2Max now makes the NG power meter to replace the Rotor spider.
This was what I was thinking of doing. Power2Max Ngeco for the spider/PM and Rotor ALDHU24 cranks and axle with Rotor rings. Not sure if I fancy Q or not. Would this work? I currently have a Shimano BB92 and Ultegra R8000 crankset.
As far as I know, yes. I have the same BB and just replaced my R8000 crank with the Rotor 3D24 crank and attached P2M NGeco. Mine had Praxis rings, but that doesn't matter either way. The crank was a direct swap, pulled out the Ultegra, slide the Rotor straight in. The 24mm spindle on the ALDHU crank should work the same way. I considered the newer crank, but I didn't want to spend the extra couple hundred bucks to save a few grams of weight.
Newer crank fits the same way according to install directions.
I did the same as you, considered the Aldhu but went with the 3D24, PM was less and the crank was less.
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TobinHatesYou
- Posts: 12456
- Joined: Mon Jul 24, 2017 12:02 pm
by TobinHatesYou on Mon Dec 10, 2018 4:12 am
dcorn wrote: ↑Wed Dec 05, 2018 6:18 pm
Just to update this thread, the ALDHU crank is now available with a 24mm spindle that is a direct replacement for Shimano cranks, plus Power2Max now makes the NG power meter to replace the Rotor spider.
Seems kind of pointless. The point of the Aldhu system is direct-mount chainrings to allow fine-turning of your Q-Rings OCP, weight reduction, and the allowance of smaller chainrings for gravel/all-road. Adding a spider and traditional bolt patterns eliminates those benefits.
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Karvalo
- Posts: 3444
- Joined: Fri Aug 10, 2018 6:40 pm
by Karvalo on Mon Dec 10, 2018 5:39 pm
TobinHatesYou wrote: ↑Mon Dec 10, 2018 4:12 am
Seems kind of pointless. The point of the Aldhu system is direct-mount chainrings to allow fine-turning of your Q-Rings OCP, weight reduction, and the allowance of smaller chainrings for gravel/all-road. Adding a spider and traditional bolt patterns eliminates those benefits.
An Aldhu compatible spider still fits the micro-OCP adjustment points on the axle so you can fine tune to the same degree, very few people want gravel size chainrings and any PM option adds weight anyway. I do think the one piece DM Aldhu rings are significantly stiffer and better shifting than standard Rotor rings though.
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TobinHatesYou
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by TobinHatesYou on Tue Dec 11, 2018 12:32 am
Karvalo wrote: ↑Mon Dec 10, 2018 5:39 pm
An Aldhu compatible spider still fits the micro-OCP adjustment points on the axle so you can fine tune to the same degree, very few people want gravel size chainrings and any PM option adds weight anyway. I do think the one piece DM Aldhu rings are significantly stiffer and better shifting than standard Rotor rings though.
Every prior P2M has a spider with a cutout for the crankarm. I can't tell for sure, but they may have changed the shape of the ALDHU model specifically to allow a limited amount of reorientation.
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benjieb
- Posts: 6
- Joined: Mon Nov 19, 2018 5:16 am
by benjieb on Wed Dec 12, 2018 1:09 am
Just wanted to comment on the weights of this crankset. I've got a direct mount 52/36 chainring, 170mm cranks and the offset axle and it comes out at 624g, so there's something wrong with either my scales or the OPs.
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jeanjacques
- Posts: 349
- Joined: Thu Apr 14, 2016 11:01 am
- Location: France
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JeffK
- Posts: 70
- Joined: Sun Aug 03, 2014 5:13 pm
by JeffK on Wed Dec 12, 2018 7:28 pm
I bought rotor aldhu 52/36 chainrings for my Shimano DA 9100 Stages crank. Will post pics and weights when they come in.
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lewolive
- Posts: 160
- Joined: Tue Dec 04, 2012 4:10 pm
- Location: Gien, France
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Contact:
by lewolive on Sun Dec 16, 2018 6:06 pm
tomtom wrote: ↑Tue Aug 14, 2018 12:17 pm
30mm in a BB86 frame is always a problem....barings cannot cope with such little room
. But the Aldhu looks stunning
!
Problem is solved this year ! Several Ceramic manufacturers have solved the issue with making thin BB.
At about $200, price remains acceptable, considering that this product will last several seasons for an average 5000-7000 miles per year.
Smoothness is great and maintenance requirements are reduced.
https://www.velo-perso.com/en/bb86-fram ... 20179.html
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seaneT1
- Posts: 372
- Joined: Tue Jun 16, 2015 11:08 am
- Location: Thessaloniki, Greece
by seaneT1 on Thu Dec 27, 2018 8:08 am
Hello! Anyone here knows what is the weight difference between rotor aldhu and shimano durace or sram red full cranksets? Thank you!
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jeanjacques
- Posts: 349
- Joined: Thu Apr 14, 2016 11:01 am
- Location: France
by jeanjacques on Thu Dec 27, 2018 5:55 pm
For Sram Red, depends the models, BB30 will be lighter but Red BB386 (635g 50/34) will be slighly heavier than Rotor Aldhu (610g 50/34 DM).
And I received the Rotor Vegast crankset for a friend, 170mm, 379g. 26g more than Aldhu but 110€ less.
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Hexsense
- Posts: 3270
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- Location: USA
by Hexsense on Thu Dec 27, 2018 6:22 pm
For people who will pair crank arm to power meter spider,
Rotor Aldhu arms and spindle +Power2max NG spider (no rings) according to power2max website:
110bcd: 601g, 130bcd: 612g, 4 bolts for Shimano rings: 602g
Quarq Dzero BB30 spindle (actually a bb386) + non hidden bolt Quarq spider (no rings) = 551.9g
So the Aldhu's weight advantage is mostly in the directmount rings?