Klaster_1's Specialized Aethos S-Works (4.96kg)

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kode54
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Joined: Tue May 23, 2006 9:39 pm

by kode54

You saved that much weight taking the paint off and respraying with a satin clear coat? Or is that a matte finish. Carbon layup looks interesting. Nice job for $280.
- Factor Ostro VAM Disc
- Factor LS Disc
- Specialized Aethos Disc
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Klaster_1
Posts: 1376
Joined: Mon Aug 15, 2016 10:25 am
Location: Paphos, Cyprus

by Klaster_1

kode54 wrote:
Thu Mar 31, 2022 5:55 pm
You saved that much weight taking the paint off and respraying with a satin clear coat? Or is that a matte finish. Carbon layup looks interesting. Nice job for $280.
The shop explained to me the proper way to do this was a base clear coat layer and a finishing matte layer. The matte was my first choice too, it also turned out to be the lightest option they had to offer compared to, say, gloss. This was my first experience re-painting a frame, I'm quite satisfied with the result.

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yourrealdad
Posts: 242
Joined: Wed Mar 15, 2017 2:25 pm

by yourrealdad

Good looking bike, although a shame to remove all that nice paint. 😉

Would you happen to know your painted uncut fork's starting weight?

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Klaster_1
Posts: 1376
Joined: Mon Aug 15, 2016 10:25 am
Location: Paphos, Cyprus

by Klaster_1

yourrealdad wrote:
Thu Mar 31, 2022 7:07 pm
Would you happen to know your painted uncut fork's starting weight?
About 287g, the 20mm I cut off weigh ~6g. Maybe a bit more if the original owner cut it too.

takolino
Posts: 325
Joined: Sun Nov 13, 2016 9:11 am
Location: USA, SF Bay Area

by takolino

That is impressive! I think you have the record for the lightest 56 frameset. :beerchug:
Even if you just move everything from your Hongfu, you'll be like 4.6-4.7! Are you planning on any new mods?

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Klaster_1
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Location: Paphos, Cyprus

by Klaster_1

takolino wrote:
Fri Apr 01, 2022 7:42 am
Even if you just move everything from your Hongfu, you'll be like 4.6-4.7! Are you planning on any new mods?
Nothing too major. The Aethos came with a bar end junction-A, after contemplating a while I came up with a plan to hard-wire the battery, put it into the bars and route a single wire from the shifter to the RD. Then I read your thread again 😂 I'd like to replace what heavy bolts Aethos came with (flat mount, RD) and order the elusive Darimo shifter clamps. The Rico de Wert pedals will happen eventually too. Right now, I don't see any other potential modding areas. Granted, more weight can be saved with lighter, shallower wheels and Gillards, but I can't keep multiple wheel sets at the moment.

kode54
Posts: 3254
Joined: Tue May 23, 2006 9:39 pm

by kode54

Klaster_1 wrote:
kode54 wrote:
Thu Mar 31, 2022 5:55 pm
You saved that much weight taking the paint off and respraying with a satin clear coat? Or is that a matte finish. Carbon layup looks interesting. Nice job for $280.
The shop explained to me the proper way to do this was a base clear coat layer and a finishing matte layer. The matte was my first choice too, it also turned out to be the lightest option they had to offer compared to, say, gloss. This was my first experience re-painting a frame, I'm quite satisfied with the result.
Nevertheless, looks like they did a great job for the price.
- Factor Ostro VAM Disc
- Factor LS Disc
- Specialized Aethos Disc
- Sturdy Ti Allroad Disc
- Guru Praemio R Disc

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Klaster_1
Posts: 1376
Joined: Mon Aug 15, 2016 10:25 am
Location: Paphos, Cyprus

by Klaster_1

The battery was successfully hardwired. Fun story: I wasted an hour going to the electronics repair shop and back because the modified battery didn't work, or so I though. After the repair guy - the one who did the job - suggested charging the battery, it came back to life. It just drained below the BMS cut voltage at the wrong time. At least we talked about the war (*f##k* it), in a friendly manner.

Before: battery - 26.5g, 75cm of naked wire - 4.7g. After: 22.66g for whole assembly. I'll wrap it in a plastic bag and put foam spacers on so it doesn't rattle inside the bar, but that won't add more than a couple of grams.
Attachments
Hardwired Shimano BT-DN110 weight, no cover
Hardwired Shimano BT-DN110 weight, no cover

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Klaster_1
Posts: 1376
Joined: Mon Aug 15, 2016 10:25 am
Location: Paphos, Cyprus

by Klaster_1

Today, I routed the Di2 the same way @takolino did. Pulling the wires through the frame was the easiest part, Aethos provides proper grommets and holes, unlike FM079.

From RD to the lever. Foam beads to silence the rattle.
PXL_20220410_083710136.jpg
PXL_20220410_091952659.MP.jpg
PXL_20220410_094255933.jpg
PXL_20220410_092705873.jpg
From shifter to bar end junction A. The junction is held by a foam ring and wires. My Darimo Ellipse wasn't originally drilled for Di2, so I routed the wire externally. Not yet sure how the wire will feel under the Tesa tape or for how long it will remain intact.
PXL_20220410_100020241.jpg
PXL_20220410_100751185.jpg
PXL_20220410_085525178.jpg
From junction A to the battery inside the bar. Held tight by foam padding too.
PXL_20220410_100528893.jpg
FM079 Di2: Shimano BT-DN110 (26,5g, tuned), Shimano SM-EW90-A (8.65g), Shimano EW-SD50 (17,67g, tuned). Total: 52.82g.
Aethos Di2: Shimano BT-DN110 (23.16g, tuned even more), EW-RS910 (6.67g), Shimano EW-SD50 (11.95g, tuned), foam beads (0.4g). Total: 42.18g.
Total savings: 10.64g.

If I had access to a 3D printer and better soldering skill, I'd try to DIY a combined battery/junction that integrates with RD, fastened by brackets or as a replacement for the plastic electronics cover.

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Klaster_1
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Location: Paphos, Cyprus

by Klaster_1

Here's how much Aethos grommets weight. There's one in the chainstay:
Specialized Aethos chainstay Di2 grommet
Specialized Aethos chainstay Di2 grommet
One in the fork crown and the same one in the head tube:
Specialized Aethos fork and head tube grommet
Specialized Aethos fork and head tube grommet
Total grommet weight: 1.32g.

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Klaster_1
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Joined: Mon Aug 15, 2016 10:25 am
Location: Paphos, Cyprus

by Klaster_1

😎
Attachments
PXL_20220410_194246857.jpg

1sanglier
Posts: 150
Joined: Mon Nov 07, 2011 1:14 pm

by 1sanglier

Klaster_1 wrote:
Sun Apr 10, 2022 12:03 pm
From shifter to bar end junction A. The junction is held by a foam ring and wires. My Darimo Ellipse wasn't originally drilled for Di2, so I routed the wire externally. Not yet sure how the wire will feel under the Tesa tape or for how long it will remain intact.

PXL_20220410_100751185.jpg
This wire can put on the underside of the bar, then you don't feel it.

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Klaster_1
Posts: 1376
Joined: Mon Aug 15, 2016 10:25 am
Location: Paphos, Cyprus

by Klaster_1

1sanglier wrote:
Mon Apr 11, 2022 12:39 pm
This wire can put on the underside of the bar, then you don't feel it.
Very questionable. This probably assumes:
1. Stock Di2 wires, with two layer on insulations. Mine are thinner with a single layer.
2. Conventional bar tape. I use fleece tape that only provides traction and no cushioning.

When routed underside, the ridge created by wire will be felt by inner side of four fingers, right against the joins. When routed over, the ridge will be located between thumb and index finger, the softest hand part without any bones, also covered by cushioned gloves (I always wear these, don't want any more scars).

1sanglier
Posts: 150
Joined: Mon Nov 07, 2011 1:14 pm

by 1sanglier

Yes it's depend on how you take your handlebar.

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Klaster_1
Posts: 1376
Joined: Mon Aug 15, 2016 10:25 am
Location: Paphos, Cyprus

by Klaster_1

My mechanical engineer acquaintance who has access to a machine shop really helped me out by converting the rear hub from QR to TA. Unfortunately, I didn't weight the axle assembly before and after, rough estimations indicate weight gain of about 6g.
PXL_20220411_181119389.MP.jpg
PXL_20220411_181132059.jpg
PXL_20220411_181410874.jpg
The other notable thing were the custom aluminium Shimano road lever flange connecting bolts from last year, now I finally got a chance to use these, saving 6.32g. I might have some available for sale later.
PXL_20220411_165200740.jpg
PXL_20220411_181441359.jpg
Almost there!

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
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