no kidding awsome job

i want one

dont see you building one!

Sweet, but ive seen better versions of the same idea...

dear thts like the coolest i dea ever nice bike aswell!! props for tht!! definatly VOD!!!!!!

GENIUS! thats revolutionary well done mate, your gonna make some big money

nice it looks cool

no more spending a fortune on derailleur hangers..
it looks so sick compared to all the other gearbox bikes
with the exception of honda

id of thaught anyone who can make there own gear box would have a good taste in music!dono about this being vod but whatever its prety sweet

nice work putting the effort into building this, but it's amateur in comparison to the "millyard racing" bike.

i bet ya the derailleur is gonna be a b*tch to take out if u have to, but watever it seems to be wrkin...

is it like a proper gearbox so you can change gear in the air!

but its the same gearbox that honda made

thats exactly what i was thinking! just it didnt have the whole casing to make you wonder..

yeah, he probably couldn't put it into production though, since honda would have a patent. but in a few years from now i bet companies will be all over that design.

There is already way better designs of this, and you can buy a seperate gearbox if you want to, but then you will need a specific frame to fit it, I think that Nikolai might have a full bike with a gearbox

I'm with u m8. Dont get me wrong- sweet bike, but not VOD material.

i think its pretty good to be honest. for people like me who didnt fully understand who the gear box worked, this is a really good way for me to understand it.

This is not a gear box. there is still a derailer. he just moved it. benefit: shift without pedaling.

Lots of the gear box designs are just that, derailer in a box. Love the simplicity of this.

Like sich0015 said this is NOT a gearbox. Its a sick design but a gearbox does not use a derailleur, they allow you to shift without pedalling whereas this works like a standard mech. Still mad props for making it.

Although obviously not quite standard as you can shift down without pedalling, a huge benefit for racing as you enter slower sections.

it looks like you still have to be moving to shift?? right??

Yeah... ummm just because it has a deraileur dosent mean its not a gearbox, in fact, the honda gearbox had a deraileur just like this one. Actually the whole honda G-box is shown here:

http://www.pinkbike.com/video/8166/

saves on borken rear mechs is one point i can think of

^^What he said, and it allows you to shift while coasting which could be an advantage.

the main advantage is that you can change gear mid corner, halfway through some rough stuff or whilst in the air, you dont have to be pedalling to make the shift.

I'm not an enineer, but as I understand it, the chain line also reduces or eliminates any drivetrain induced stiffening of the suspension. With the drive gear located at a point where the arc of the rear hub means no change in relative distance, there is no need for a chain tensioner either. Personally, I think I'd want some sort of cover over that constantly spinning buzz-saw... hate to have my right calf brush up against it at speed...

ok tanks people

lets see you do better

The best use of existing technology that i have seen. I would put some fenders or some thing around the derailer to keep the crap out.

I don't think you can because it's still using that derailler concept. So while you're trying to shift to another gear, the chain is still going to be on the same gear and that until you start pedaling. So it doesn'e have the advantages of a conventional gearbox where you can just shift gear without pedaling and you still have to run maintenance on it because it's using a derailler to shift.
This said, it still have the other gearbox advantages, like you don't need worry about the derailler hitting a rock or something else and just snap off. The use of the chainguide or chain tensioner is pretty useless as the chain with always remained tensioned.

did you actually watch the video ? the last bit is him shifting down without pedalling....

yeah, but it still means that the bike as to be moving, while in a conventional gearbox, the bike can be fully stopped and you would still be able to shift.

what would make it better is to build some kind of enclosure around it.

the frame was shitty but the derailer wwould be so protected

i agree it looks like if you were leaning hard you might get tangled up...is there a way to put a guard the length of that long chain, or maybe put a part of the rear swingarm further out to protect it?

Dude he fabricated it himself, give him a little respect!

to nie jest Polska strona, a Polski nie jest jezykiem miedzynarodowym, wiec pisz po Angielsku/
this is not Polish site and Polish isn't international language,so write in English