2020 Aethos Sub UCI weight Specialized.

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Moderator: robbosmans

What defines the rumoured UCI Illegal Specialized

Doesn't Exist
75
24%
More aero than the Venge
39
12%
Lighter than the Tarmac SL6
139
44%
More aero than the Venge AND lighter than the Tarmac SL6
36
11%
Not sure
27
9%
 
Total votes: 316

ckspark
Posts: 48
Joined: Tue Jul 02, 2019 4:43 pm

by ckspark

robeambro wrote:
Fri Nov 19, 2021 6:23 pm
ckspark wrote:
Fri Nov 19, 2021 3:32 pm
robeambro wrote:
Fri Nov 19, 2021 2:13 pm
ckspark wrote:
Fri Nov 19, 2021 12:13 pm
My Aethos Comp 10R 56cm naked teal fade frame. Had to buy a complete bike as the 10R frame is not available in the UK and I can't afford the S works. Going to build as light as my budget allows.

Completely bare 704g
IMG_20211119_103814382.jpg

With fittings except hanger 735g
IMG_20211119_105031265_HDR.jpg

Fork uncut completely bare 306g
IMG_20211119_110742943.jpg
Wouldn't buying a complete bike and strip it set you back nearly as much as buying the S-Works frame? Iirc it's £5k for the Rival build - if you're lucky enough to sell groupset, wheels, etc, that would be maybe £1k at best. I'm asking as I've ended in the same conundrum and thought it was worth going for the latter.
Yes agreed but I bought a barely used bike. Just pointing out that under the ballast is still a very light frame even on the cheapest Comp and is an option for anyone wanting to upgrade over time.
Why would I be lucky to sell the Rival groupset? It's sold out in the UK so obviously popular.
Oh I didn't mean to be rude - just saying that selling stuff second hand can be a pain. And for sure, it's a valid frame. Apologies if it sounded the wrong way.
No problem, I didn't initially make it clear that I purchased a used bike much cheaper than new which in my opinion makes the project viable, especially as I already own lots of light parts I can use.

by Weenie


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robeambro
Posts: 1829
Joined: Sat Jul 07, 2018 6:21 pm

by robeambro

What's the go-to BSA BB for somebody who doesn't want to fork out silly money but wants something reliable/durable yet not too heavy? A "Best Value" buy. I know most people tend to splurge for CeramicSpeed and the likes for these builds, but I'm looking for something a bit more financially sensible.

Maddie
Posts: 1533
Joined: Tue Oct 17, 2017 5:44 am

by Maddie

C-Bear or Wheels MFG. I went with the latter and exchanged the bearings to NTN LLB.

AgMar
Posts: 18
Joined: Wed Sep 29, 2021 12:47 pm

by AgMar

C Bear but used the Shimano one (Hollowtech crank) in the past and to be fair it is perfectly fine and a lot more economical, good value.

robeambro
Posts: 1829
Joined: Sat Jul 07, 2018 6:21 pm

by robeambro

Thanks both - will look into these options.

tjvirden
Posts: 540
Joined: Sun Nov 22, 2020 9:21 pm

by tjvirden

robeambro wrote:
Wed Dec 08, 2021 1:07 pm
What's the go-to BSA BB for somebody who doesn't want to fork out silly money but wants something reliable/durable yet not too heavy? A "Best Value" buy. I know most people tend to splurge for CeramicSpeed and the likes for these builds, but I'm looking for something a bit more financially sensible.
Shimano 24mm spindle? BBR60. In my experience the sealing is as good as any (same as 9000/9100).

robeambro
Posts: 1829
Joined: Sat Jul 07, 2018 6:21 pm

by robeambro

tjvirden wrote:
Wed Dec 08, 2021 9:19 pm
robeambro wrote:
Wed Dec 08, 2021 1:07 pm
What's the go-to BSA BB for somebody who doesn't want to fork out silly money but wants something reliable/durable yet not too heavy? A "Best Value" buy. I know most people tend to splurge for CeramicSpeed and the likes for these builds, but I'm looking for something a bit more financially sensible.
Shimano 24mm spindle? BBR60. In my experience the sealing is as good as any (same as 9000/9100).
Yes Shimano. Good option!

plainey
Posts: 9
Joined: Mon May 20, 2019 7:41 am

by plainey

robeambro wrote:
Thu Nov 11, 2021 6:35 pm
I'm going to take the discussion away from the polemics with a daft question.
What's the height of the stock headset cap supplied with the Aethos, and in case that's taller than 10mm, can it be replaced with something in the region of 8-10mm? It's probably a silly question but this is what happens when your current bike has "mandatory spacers", you are not used to having the chance to tinker your position with headset caps.
Just to piggyback off this, anyone know if the Tarmac SL6 20mm headset cover is compatible with the Aethos? I'm running 2cm of spacers including the stock headset spacer and would prefer the look of the SL6 one.

This person seems to be running it:
Image

Turrifik
Posts: 100
Joined: Wed Nov 25, 2020 5:08 pm

by Turrifik

Thanks to the wealth of information here, I bit the bullet and built an Aethos Expert frame up this summer with Ultegra Di2. Have been loving it for local hill climbs.

Currently sits at 6.62kg with cages, computer, pedals, red cassette, SLR saddle, and Alpinist bits. Nothing too exotic.

I’m now tempted to upgrade some of the Ultegra groupset parts since I can re-use them on another bike. Any opinions for better rotors, crankset, shifters?

I’ve been looking at XTR rotors and options for cranks.

Thanks for the help along the way.
Image


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matheussiq8
Posts: 9
Joined: Thu Feb 25, 2021 6:41 pm

by matheussiq8

Finally got my S-Works Aethos frame and looking now to buy the parts to build it. Quick question that even after reading this thread I couldn't figure out. Can I use the HOPE Caliper RX4+ on the Aethos fork? I've seen a build using the Trickstuff C21 but nothing so far regarding the Hope RX4+ caliper to know if it works or not.

There are also two different models for the caliper, anyone knows which one will work better in the front?

HOPE Caliper RX4+ Flatmount front FMF+20
Image

HOPE Caliper RX4+ Flatmount rear FM+20
Image

1llum4
Posts: 302
Joined: Thu Jul 12, 2018 6:00 am

by 1llum4

The Aethos doesn't use a standard front flatmount 160mm spacing so you need a rear flatmount caliper for 140mm and use the aethos specific 160mm flatmount adapter.

For Hope RX4+ that means you need the Rear Flatmount Min HOP534372 caliper.

Beancouter
Posts: 1070
Joined: Fri Apr 20, 2012 9:04 pm

by Beancouter

matheussiq8 wrote:Finally got my S-Works Aethos frame and looking now to buy the parts to build it. Quick question that even after reading this thread I couldn't figure out. Can I use the HOPE Caliper RX4+ on the Aethos fork? I've seen a build using the Trickstuff C21 but nothing so far regarding the Hope RX4+ caliper to know if it works or not.

There are also two different models for the caliper, anyone knows which one will work better in the front?

HOPE Caliper RX4+ Flatmount front FMF+20
Image

HOPE Caliper RX4+ Flatmount rear FM+20
Image
Funnily Enough I was doing exactly the same research today! As noted, definitely not the +20 calipers. I also had some concern over the clearance of the rear caliper on the seatstay (similar to the C21, albeit might be more viable on a bigger frame?). In short, probably need to buy them and see if they will fit …. However none in stock in the UK at the moment.

As an aside, by my calcs the Hope rotors (with pads) might save about 50g v the Ultegra..


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rjich
Posts: 108
Joined: Sun Apr 11, 2021 11:38 am
Location: NYC, NY

by rjich

Turrifik wrote:
Sun Jan 02, 2022 7:55 pm
Thanks to the wealth of information here, I bit the bullet and built an Aethos Expert frame up this summer with Ultegra Di2. Have been loving it for local hill climbs.

Currently sits at 6.62kg with cages, computer, pedals, red cassette, SLR saddle, and Alpinist bits. Nothing too exotic.

I’m now tempted to upgrade some of the Ultegra groupset parts since I can re-use them on another bike. Any opinions for better rotors, crankset, shifters?

I’ve been looking at XTR rotors and options for cranks.

Thanks for the help along the way.
Image


Sent from my iPhone using Tapatalk
Personally I'd replace the Red cassette with Shimano. They are not as quiet or smooth shifting for the sake of a few g as would feel it's at a weight now where it won't make a difference.
Ultegra crank has many options to replace as long as the axle is wide enough 120mm+ with Rotor, Easton THM etc.

Shifters I wouldn't bother with for the lack of weight savings. The older Ultegra hydro shifters were boat anchors, new ones within a few GM's of Dura Ace I think!

I replaced my SRAM centerline with XTR recently. They were lighter, Stop as well as the ones before, but slightly warped whixh was a bummer.

tjvirden
Posts: 540
Joined: Sun Nov 22, 2020 9:21 pm

by tjvirden

Turrifik wrote:
Sun Jan 02, 2022 7:55 pm
Thanks to the wealth of information here, I bit the bullet and built an Aethos Expert frame up this summer with Ultegra Di2. Have been loving it for local hill climbs.

Currently sits at 6.62kg ........
This is really nice - I'm not convinced that all the Aethos frame sizes look in proportion, but this does. 54 or 52?

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
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GZAmk2
Posts: 25
Joined: Sun Sep 11, 2016 9:12 pm

by GZAmk2

If you want an easy life, avoid Hope calipers. Lots for sale second hand…

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