La Bourde Posted December 16, 2021 Report Share Posted December 16, 2021 Just want to show you the last street/trial bike I built, because I really appreciate the result. The aim was to have a cheaper bike, with reliable/low maintenance parts. The frame is an (used) Octane01 Spark. It is basically a skatepark frame, from the NS Bike sister brand. Its price is reasonable (less than the rear wheel). It is on the heavy side, but I did not expect the bike to ride that well. To me, it is like a low budget Arcade with 26" wheels. The geometry is: wheelbase: 1010mm chainstay: 381mm bb height: around 350, so about +20mm head angle: 74° the fork has an axle to crown distance of 445mm and can be replaced by a suspension fork with 80mm travel. It has a BMX bottom bracket and crankset, 25T/20T gear, BB7 brakes. I'll swap the fork for a Reba with 80mm travel in a near future. It does not really fit the original concept, but I think the bike will be even more versatile. I decided to ride a Hope rear hub to be able to ride several gears, but this is not the case currently (it should not be a problem to put a mech on the frame). Hope it can inspire you for your next build. 3 Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted December 16, 2021 Report Share Posted December 16, 2021 That looks... a lot better than I thought it should / would! Nice work! Quote Link to comment Share on other sites More sharing options...
Martynich94 Posted December 17, 2021 Report Share Posted December 17, 2021 Had one of these frames in the past, absolutely loved it. Surprised how well it rode. Definitely regret selling it now though. Always on the lookout if one pops up for sale. Quote Link to comment Share on other sites More sharing options...
smiddy86 Posted January 27, 2022 Report Share Posted January 27, 2022 Alright mate what year octane one frame is it Quote Link to comment Share on other sites More sharing options...
La Bourde Posted January 29, 2022 Author Report Share Posted January 29, 2022 Hey, don't know the year exactly. But the same frame was still sold by Octane01 last year. Now I ride a RS Reba with 80mm of travel and I really like the versatility of this build. Quote Link to comment Share on other sites More sharing options...
La Bourde Posted January 29, 2022 Author Report Share Posted January 29, 2022 I also changed the cable brake housing for some Odyssey Slic. Can't recommend them enough! The glow in the dark effect is quite nice too! 2 Quote Link to comment Share on other sites More sharing options...
adamc04 Posted November 28, 2022 Report Share Posted November 28, 2022 That looks awesome love this sort of bike. Bet it's a riot Quote Link to comment Share on other sites More sharing options...
La Bourde Posted February 5, 2023 Author Report Share Posted February 5, 2023 (edited) Small updates :-) Some months ago I bought a new headset from Shadow Conspiracy and some plastic pedals from Cinema. I lowered the bar by removing 8mm spacers. I had to change the front tire and went for an old Kenda spare. I eventually found a NS Majesty Park frame. According to the specs, it has the same geometry as the Spark, but should be lighter. I had to double check the weight of each frame: the NS is indeed 400g lighter! I had two sessions on the new frame with exactly the same components and I did not notice any difference in the geometry. I compared both frames, one next to the other and only the seat tube of the NS is longer and the junction with the top tube higher. That is all! Ok the tubing and the quality is overall better on the NS. Riding the Majesty feels so similar ... Manuals, bunny, 180°, pedal up. It is the basically same bike. I mean if there is any difference, it is so small, that the rider condition will impact much more the riding! I was expecting a difference in stiffness, but to my surprise, I have the impression that the Majesty is as stiff as the Spark. The first few meters on a bike, I really notice the difference of weight and weight distribution. I had the impression the rear end was lighter. Somehow it felt snappier, more responsive. A nice improvement. Today I changed the bar for a lighter one, put some new grips and change the stem for a 80mm long one, still with 17°. I removed a 4mm spacer, the bar is slightly higher. Overall I saved more than 550g with this new build. The first few moves in the garage shown me that the stem change goes in the right direction. The bike is easier on the front and there is more room for the body. I felt I had a more central position on the bike. Edited February 5, 2023 by La Bourde Quote Link to comment Share on other sites More sharing options...
La Bourde Posted February 9, 2023 Author Report Share Posted February 9, 2023 This week I decided to sell the Octane01 Spark frame. Unfortunately I noticed a small crack close to the brake mount. So it seems trials was to harsh for this frame. Rest in peace, spark! Hope the Majesty will be stronger... Quote Link to comment Share on other sites More sharing options...
SergeL Posted February 9, 2023 Report Share Posted February 9, 2023 I really like how these frames are paired with low travel forks. By the way I'm quite surprised this fork and front sprocket are still alive after trial abuse. Quote Link to comment Share on other sites More sharing options...
La Bourde Posted February 9, 2023 Author Report Share Posted February 9, 2023 I like the look too, especially with a rigid fork, but my wrists don't like the idea of riding a rigid fork again on this kind of bikes. The current sprocket is made of steel and I think it is strong enough, it weights more than 100g. It is no longer true though I had one made of aluminum and it lasts maybe 6 months. I am light and I don't do big moves. But you are right, I have also my concerns regarding the fork. I check regularly for cracks. That is why I wanted to save some weight on the frame ... to put a Manitou Circus in 80mm without weight penalty. But I can't find a white one for a good price currently The stiffness will be higher and the lockout will be more efficient too, the one on the Reba is somehow weak. Quote Link to comment Share on other sites More sharing options...
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