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6.57 kg. My ultralight 24" build

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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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Come back and tell us about it when it's survived 6 months of decent standard trials riding.

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The wheels are too small but thats really impressive. I had an 8 Kg monty Xlite and it felt like it was made of plastic, 6.5 KG is crazy

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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.

Edited by Rusevelt

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Nice bike and pictures, can't see it lasting long though.

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Wow. That's impressive. I like the fact that you've done custom stuff as well.

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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.

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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.

I'd give it an hour tops.

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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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Yeah I guess you're right. If you've got the money and weigh only 60kgs... I'd like to ride a bike like this but given that I'm at 91kgs at the moment, my bike just got heavier in order to work well for me. :)

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Tasty bike bet it rides like a treat, but my preference for bikes is always something solid that can take a beating. Nevertheless 6.57 kg.. wow!!

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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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Ignore the haters! If you are going to be a weight weenie you may as well break a record, looks very nice in orange too. Have you ridden that rear tyre much yet ?

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Have you ridden that rear tyre much yet ?

I used to ride with Big Betty, but a lot of guys have ridden Fat Albert 2.4 with no trouble.

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Some pics of the building process:

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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.

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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.

Edited by Rafal

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

The tires aren't that bad if you use the right pressure.

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

Plus you only weigh 60kgs.

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I'd bend it just by riding it out of the garden

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A friend did the math when the 24'' carbon forks first came out, and he was using the Radix frame. He got exactly the same number as you got!

You couldn't go much lower. This seems super good for a lightweight rider like you.

Good work, looks sharp

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Use helium as air in the tubes, will make the bike some more lighter;), cool thread.

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