Target

Just train more and be patient. I have been riding trials since 2003

Finished the video - check it out here: http://www.trials-forum.co.uk/topic/192485-riding-a-657-kg-bike/

Finally finished editing! Here you can find a topic about the bike in case you've missed it: http://www.trials-forum.co.uk/topic/191230-657-kg-my-ultralight-24-build/

Time flies so fast! It took me 18 months to build the bike. I don't like to hurry with video editing too However, it's almost ready

Hope it'll work fine, and Schwalbe will make 24" or 20" version. I used 26" tube on my previous 24" bike for a while without any trouble, but not sure this works with ultralight "aerothan" tube.

It's wearing out faster than I expected, but works perfect. Grip is normal, bite resistance is normal, just a normal lightweight tyre. And I like the idea of shortening side knobbles, the tyre holds better and feels much more reliable on inclined surfaces.

Any difference from Try all k2 stem?

Well, I was wrong about Eclipse tubes. I thought it was latex like Foss and Michelin, but haven't found any information about Eclipse material. Bad reviews from trials riders were only about latex tubes. It's interesting to try Eclipse if it worth the price.

50 g front and 99 g rear hubs look really interesting! Is he still in this?

I thought about Eclipse tubes, of course, but met several bad reviews on latex tubes from trials riders. Reviews from MTB riders are quite good, they say about high snake bites resistance of latex tubes as against normal tubes. But some guys I know have had a bad experience with latex tubes in trials, they got snake bites a few times a day. Nice to see two good reviews about Eclipse tubes! May be I'll try one on front wheel. The more interesting thing I thought were tubeless tires, at least front tire. But to prevent burping on low pressure, the rim must have special profile as modern MTB rims. Neon single wall rims profile differs a lot from it. I've red a lot about tubeless experiments on this forum, but looks like everybody has problems with burping.

You're right. But I have reduced wall thickness on the gussets, BB tube and seattube, it saved me some grams. "Verzin" is very small local producer located in Saint-Petersburg, Russia. I think nearly 200-300 Verzin hubs have been ever made. They are nice and strong, but unfortunately the producer isn't really interested in expansion of production. So there is no site at the moment.

There is no need to machine the headset since Trialtech Sport Lite headset is already machined. But I had my Zhi L headset pressed into the frame when Trialtech Sport Lite was released.

Just dremel, needle files and a lot of time

Two months of riding have passed. You might wonder if any part of the bike is still alive, or this victim of perfectionism has gone to the junkyard. The worst thing that happened to the bike is scratches on the anodised frame. My heart bleeds when I see it. Have bent 2 teeth on the pedals. That doesn't affect the adhesion though. Echo TR levers are bleeding softly. I have changed the right lever piston to red Racing Line piston, seems like it has stopped bleeding. The good thing is that both front and rear pads work great, bite with a loud sound even in the wet. The rear rim tape was too rubbery so I changed it to the black scotch-tape. It saved me about 10 g Thin-wall tubes are amazing! I ride often, about 4 times a week, but have got only 2 pinch flats in two month. Tyres have been worn out slightly, so they've got a little bit lighter. The weight of the bike is 6.54 kg at the moment. It's easy to get used to the lightweight bike. The weight now feels just normal for me. But the bike still feels amazingly responsive, and my level has really increased after changing the bike. An August photo in action: Video is coming soon!

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.

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.

Some pics of the building process:

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

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.

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))

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. 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)

I don't see logotypes on the handlebar. But it looks like Echo SL. Is this your point?

The rear rim must be in correct position against 4-bolt magura mounts while measuring.

So you have welded new lower part of dropout to an old dropout, and repainted the frame? That requires some doing

What about sloping steerer clamp stems? Has anybody experience using it without top cap? These stems tend to slip easier than non-sloping stems as I know.