Hongfu FM079

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wheelbuilder
Posts: 760
Joined: Wed Feb 08, 2017 2:10 am

by wheelbuilder

I've installed a few of those tubolitos for customers. The valve tube (that the core screws into) is plastic, and deforms easily. They start leaking after a few rides usually. Teflon tape helps, but it's kind of the nature of the product.
Never cheer before you know who is winning

by Weenie


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poynt
Posts: 183
Joined: Sat Mar 13, 2004 5:31 pm
Location: Devon, UK

by poynt

I had one that the thread rounded out and I couldn't keep the valve tight. Tubolito sent me a replacement and on the faulty one I epoxied in the vave stem and all is fine now.

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Klaster_1
Posts: 810
Joined: Mon Aug 15, 2016 10:25 am
Location: Russia

by Klaster_1

Tubolito contacted me and sent a pair of replacement tubes, great service 👍 Berk has sent a warranty Lupina too, this time in 3K (because lighter) and oval rails, so kudos to Jure and his team 🍻

Meanwhile, I put the new J&L hollow Ti rotor bolts and weighed my 140mm KCNC Razor, which turned out 3g lighter than in spreadsheet - a freebie! And a heavy butyl tube I run in front as spare.
Attachments
IMG_20190710_192358.jpg
KCNC Razor 140mm weight
IMG_20190710_162549.jpg
J&L hollow Ti rotor bolts
IMG_20190710_192305.jpg
J&L Ti rotor bolts
IMG_20190707_102843.jpg
Mitas Butyl road tube, 60mm

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Klaster_1
Posts: 810
Joined: Mon Aug 15, 2016 10:25 am
Location: Russia

by Klaster_1

The replacement oval rails Lupina is ~3g heavier than Saevid Alien.

BmanX
Posts: 3912
Joined: Thu Nov 10, 2005 5:31 pm

by BmanX

This is a great build and some good ideas for my 1x build.
BIG DADDY B FLOW
AERO & LIGHT is RIGHT

Cervelo SLC 5960g/13.13 lbs

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Klaster_1
Posts: 810
Joined: Mon Aug 15, 2016 10:25 am
Location: Russia

by Klaster_1

Yesterday, I finally got to unpack my bikes after moving to a new city. Inspired by @Godzuki, I replaced the bolt in Darimo Sub4 with hollow J&L Ti bolt, which saved ~0.7g. Anyone knows where to source hollow Ti bolts compatible with T1 clamps? These should have a rounded yoke contact point, not flat.
Attachments
IMG_20190813_081506.jpg
Berk Lupina 132mm 3k matte oval rails
IMG_20190815_202316.jpg
Darimo Sub4 stock Ti bolt
IMG_20190815_203441.jpg
Darimo Sub4 tuned with J&L hollow Ti bolt

joejack951
Posts: 745
Joined: Fri Feb 18, 2005 6:50 pm
Location: Wilmington, DE

by joejack951

That Berk saddle is beautiful! I need to try one. Do you know if he paints his parts? It would need to be white for my bike.

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Klaster_1
Posts: 810
Joined: Mon Aug 15, 2016 10:25 am
Location: Russia

by Klaster_1

joejack951 wrote:
Fri Aug 16, 2019 2:49 pm
That Berk saddle is beautiful! I need to try one. Do you know if he paints his parts? It would need to be white for my bike.
You can order a white leather saddle, like some WW members, but I have no idea about painted carbon shell, I'd ask Berk about that.

joejack951
Posts: 745
Joined: Fri Feb 18, 2005 6:50 pm
Location: Wilmington, DE

by joejack951

I will see what he says. Thanks.

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Klaster_1
Posts: 810
Joined: Mon Aug 15, 2016 10:25 am
Location: Russia

by Klaster_1

Tubolito has warranted both of my failed S-Tubo Road, the new tubes are ~1g lighter and did not lose pressure overnight like last time.
Attachments
IMG_20190822_202355.jpg
Tubolito S-Tubo Road weight #3
IMG_20190822_204150.jpg
Tubolito S-Tubo Road weight #4

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Klaster_1
Posts: 810
Joined: Mon Aug 15, 2016 10:25 am
Location: Russia

by Klaster_1

This Saturday I decided to put a fresh ARO-09 rotor on just in case to see if it would rub less, I think something in my setup causes rotor rub, a lazy piston or non-faced mounts. Anyway, I went for a ride next day and on the way back something pinged and flew from under the front wheel. "Probably a pebble", I thought. At the next "downhill" - it's pretty flat in SpB, so after a while - I noticed that left lever goes all the way to the bar! The rear brake was barely enough to stop in time before I hit the traffic. I forgot to tighten the pads pin during adjustments and lost both pads and pin. Now I have to grind down another set of Cooma EX pads down and order another set of TP pins. What streak of bad luck, I already had three parts warranted this year. I need to make a checklist for after the service.

On the subject, anyone knows where to find M5 pad pins in aluminium? All I can find is Shimano M4.

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Klaster_1
Posts: 810
Joined: Mon Aug 15, 2016 10:25 am
Location: Russia

by Klaster_1

If anyone's interested, here's how -12deg 110mm Hyperstem compares to -12deg 110mm IX2. The Hyperstem was traced from this document, then extended 1cm, all measurements match chart from here. To match bar position, IX2 should be ~5mm lower. In this configuration, IX2 will be ~3mm taller than Hyperstem, so probably no need for a top spacer.
Attachments
isx2.png
Darimo IX2 geometry
hyperstem vs ix2.png

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