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6.57 kg. My ultralight 24" build


Target

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Hi, just want to share my new build with you.
The point was to make a 24" trials bike as light as possible without compromising on strength and geo.

The weight of the bike is 6.57 kg.
As far as I know, it's the lightest 24" trials bike ever! Also, it's supposed to be the lightest stock bike ever (yeah, 24" bike is a stock by UCI). Please correct me if I'm wrong.

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Spec:

Frame and Fork
- Frame: Echo Trial 24" 2011 (slight headtube sawing, handmade butting, internal hose routing, color anodising by Steve Barry) (1443 g)
- Fork: Rockman Carbon 24" (577 g)

Front wheel
- Rim: Neon Single 35 mm, with extra holes around the joint and in the valve area (370 g)
- Tyre: Schwalbe Rocket Ron 24"х2.1, slight cutting of side knobbles (385 g)
- Tube: Schwalbe 7C Presta (98 g)
- Rim tape: Oracal 641 film (5 g)
- Hub: Verzin SL (57 g)
- Hub bolts & washers: Ti bolts and Verzin Alu washers (6 g)

Rear wheel
- Rim: Neon Single 47 mm, with extra holes around the joint and in the valve area (491 g)
- Tyre: Schwalbe Fat Albert Rear 24"х2.4, slight cutting of side knobbles (555 g)
- Tube: Schwalbe 7C Presta (99 g)
- Rim tape: Double-layer Oracal 641 (15 g)
- Hub: Verzin SL 116 (131 g)
- Hub bolts & washers: Ti bolts and Verzin Alu washers (11 g)

- Nipples (front + rear): DT Alu 2.0 (20 g)
- Spokes (front + rear): Sapim Laser 2.0-1.5-2.0 (254 g)

Front brake
- Front brake: Echo TR, custom alu pivot barrel and TPA, Racing Line Alu fittings and grub screws (157 g without pads)
- Front brake pads: Rock Blue (17 g)
- Front brake clamps: Echo TR with Ti bolts (40 g)

Rear brake
- Rear brake: Echo TR, custom alu pivot barrel and TPA, Racing Line Alu fittings and grub screws) (171 g without pads)
- Rear brake pads: Handmade. Polyurethane + magura backings (21 g)
- Rear brake clamps: Echo TR with Ti bolts (40 g)

Drivetrain
- Cranks: Born CNC 2012 162 mm, slightly sawed (306 g)
- Freewheel: Echo SL Titanium 3.3 (144 g)
- Chain: KMC Z610 HX (241 g)
- Chain tensioners: Steel grub screws (3 g)
- Rear Sprocket: Verzin Alu 14T (14 g)
- Pedals: Echo SL Ti Cage (240 g)
- Bottom bracket: Echo Urban Ti (167 g)
- BB bolts: Ti M15 (11 g)

Steering
- Stem: Neon Wing 150х30 with Ti-bolts, sandblasted (170 g)
- Grips: Pro bar tape (10 g)
- Handlebar: Rockman Carbon 720 (200 g)
- Bar end plugs: GT (3 g)
- Star nut: Standard (6 g)
- Headset: ZHI-L CNC, with custom alu crown race (71 g without cap)
- Headset bolt: Alu (Pro-bolts) (2 g)
- Headset cap: Neon (6 g)
- Headset spacer: Alero CNC carbon 4 mm (1 g)

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Edited by Target
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That's hot but give it Damon and I think it doesn't survive one riding session. Can't see Sapim Laser working, especially with such a light rim.

It's not for Damon and crazy TGS, of course.

I'm only 60 kg, so hopefully it will last for a while :)

Haven't broken anything after the first ride, such a great surprise for me))

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Lighter than the 6.84kg Camin 20in Mod. Must have been a nightmare routing the rear cable when the frame had no cable guides built-in.

Routing was not too hard. At first I put a piece of PE foam into the frame tube to prevent cable knocking. Then I used a derailleur cable for routing the rear cable.

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This is properly obsessive tuning. Nice work!

Apart from the cranks, I can't see something that is way too light for its geometry or material when you are a smooth rider and don't do much wedging (shorter-than-wheelbase obstacle between the wheels).

I don't know anything about the rear tyre or these forks, just that Hashtagg went way lighter than this with their new disc forks.

The brakes will leak, of course, but no one produces rim brakes with Magura-die-casting quality nowadays.

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When you add up all the weights of everything, does it come out the same as the fully built bike? Might be a silly question...bike looks awesome. Not keen on the dragons on the cranks though.

Yes, but don't forget to add the weight of the air in the tubes. It's 14 g for both my wheels. So when you add up all the weights, the sum is 6572 g.

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still unridable bike. Those tyres and tubes... no way it can handles.

Tubes are thin and I was worried about them, but still haven't had pinch flats. Of course, if it pinches often I"ll put some heavier tubes.

Can't say anything bad about tyres though. I'm really satisfied with their grip and large volume.

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