This was done a long time ago in the 90s... look it up - it's featured on GMBN in the weird tech category at one point. Great to see how you've made it yourself though as we can't hop back 30 years to when it was done last haha.
great idea, definitely makes sense on long descends and heavily loaded bikepacking bikes! and making those parts almost completely on your own, makes you less dependent on those monopoly corporations👏
I built a fatbike with a dual brake system, 2x 203 mm. There was just a problem with attaching the caliper to the right side, everything works as it should. Otherwise very nice reconstruction CZECH REPUBLIC
A single 220mm Magura rotor is around 6,594mm^2 of surface area. This dual 180mm gives 10,676mm^2 of surface area, or 161% of the surface area, at 157% of the rotational weight (assuming both are MDR-P rotors). Considering that a 220mm rotor is already overkill on a bike, and a 203mm rotor is usually sufficient, it doesn't really make much sense to go dual rotor. The biggest benefit would be if you added dual 4-piston calipers for the force generated by doubling the pistons.
doubling the pistons only adds modulation not force. your gonna need more mechanical advantage if you want more stopping power, but you (almost) always have more brakes than traction, so pointless anyway, but very cool.
You are right and wrong, bigger discs make sense in terms of heat dissipation and warping. Stopping power is great at 203 already. A sort of similar idea is vented rotors from Hope. Personally, I have a lot of trouble with overheating breaks.
@@vladivanov7645 Yeah I have been on a few descents where I had to stop and let my 203's cool down The first time I was on a really steep large rocky trail, and by the time I recognized that the rotors were hot they were almost on fire. Could have started a forest fire.
I do not understand why some people here are willing to rework difficult numbers, but at the same time I do not realize what an unforgiving effect one disc has on me. I don't have a problem with the braking force, but with the way the quality hand-woven wheel also twists. therefore, this solution is ideal and excellent. because the whole wheel does not suffer!
I admire your work however when you make one thing stronger in a chain then the next link automatically becomes weaker. Do you have to change to thicker spokes and a stronger rim
Amazing ,,, you should ended the video with a stoppie or a Endo to signal that the video is coming to a stop/ending at the same time showing how good the front brakes are
Need to see that bracket on the fork leg and how exactly the second caliper is attached. That adds significant weight and what is it doing to the fork leg from movement because it must be clamped to a painted surface?
I noticed on your front hub assembly that your bearing spacer tube appears to have no room to move around radially, and I didn't see any notches in it either. How do you ever plan on replacing the hub bearings?
You should do a comparison with same bike on braking distance but one bike with single brake and one with double front brakes and 2 riders on same bikes with different brake setup go same speed then brake at same time and see who brakes in least distance.
Fakt pekna praca. Zaujima ma to koli tomu ze netrpi vyplet... ja pouzivam uz na niekolkom biku slx7120 stvorpiestik a kruti mi na zakazku rucne vypletane koleso
You guys think this is weird? Formula and Marzocchi made this an available option in 1997 with the first generation Z1 Bomber. Performance and heat disappation aside, nobody mentioned how it reduces twisting on a telescopic fork to help the suspension function better under load. ...Will this fit my Lefty?
first .. very good work… I have two questions, how did you make the bushing holes and then the fork was ready for the two clamps? or you adapted it. thank you so much .
Hey I'm doing the same but in a different way but I have a question ❓ Which one is better for using in bearing hubs 6200rs or 6200zz , I mean plastic shield or metal shield?? Is there any problem if I use metal shielded bearing??
Kinda pointless, but its cool to see the proof of concept. Maybe it can even make some difference like in hardcore dh (of course 2 quad piston brakes installed with twin 203 rotors, on a real dh bike).
not pointless at all for long descends and a heavily loaded bike (bikepacking for example). had my 203s failed couple of times on my enduro when descending all the way down from 2500m mountains. had to pause in between for up to 15min and that just sucks^^
Hello Paul, is there any way I could message you in asking some questions on making a brake caliper? Really enjoy your work and videos, thank you for sharing. 🙏
It’s a cool proof of concept but I can’t see it necessary unless you were >250Lbs and crushing some pretty gnarly terrain, and typically, very heavy riders seldom shred terrain like that and it would be better suited on a DH bike than a trail bike. Props on the development though. It’s impressive.
