That thing would be noisy as hell. Big hollow swingarm that gets slapped by the chain on every up and downstroke. It's pretty, but it's just another g-boxx bolt-on bike.interesting writeup on the Jezken gearbox bike
http://www.pinkbike.com/news/jezken-gearbox-prototype-interview-2010.html
i'm pretty sure a frame mounted alfine is the best solution currently - standard readily available guts, decent value, has triggers, not too heavy, variable mounting / suspension configuration possibilities, and a minimum of proprietary stuff needed. dammit zerode, where are you?We need a Shimano or Sram Boxx, Cheaper and Lighter than G-boxx, with trigger shifters.... and with a better Frame-Boxx interface.
srsly. The alfine is a great hub and supposedly has been used in MTB applications. It's biggest downfall is that it "supposedly" cannot handle the high torque of a granny gear or low-ratrio drive. When do you climb 30* hills in DH?i'm pretty sure a frame mounted alfine is the best solution currently - standard readily available guts, decent value, has triggers, not too heavy, variable mounting / suspension configuration possibilities, and a minimum of proprietary stuff needed. dammit zerode, where are you?
Yep, but it would be really cool if shimano could make a version of the Alfine more G-boxx Friendly. Something that could be easyer to attach to the frame.i'm pretty sure a frame mounted alfine is the best solution currently - standard readily available guts, decent value, has triggers, not too heavy, variable mounting / suspension configuration possibilities, and a minimum of proprietary stuff needed. dammit zerode, where are you?
I think that's what makes the alfine a more attractive option... there's more freedom as to where it can be mounted in the frame. I do get your point about ease of actual mounting, but then again Shimano intends this to be used as a hub.Yep, but it would be really cool if shimano could make a version of the Alfine more G-boxx Friendly. Something that could be easyer to attach to the frame.
that's the awesomeness of the frame mount hub config - it's pretty much universal (ie, you could, in theory design it to fit more than one brand of gearhub), just a 135mm hub mount. bolt a chainring carrier to the side of the hub flange, and you're done. the first zerode demonstrates the simplicity of the model well - standard hub bolted inside the center ring. (damn, i'd love to see a superco iteration of this):Yep, but it would be really cool if shimano could make a version of the Alfine more G-boxx Friendly. Something that could be easyer to attach to the frame.
There shouldn't be any chainslap if it's got enough tension...That thing would be noisy as hell. Big hollow swingarm that gets slapped by the chain on every up and downstroke. It's pretty, but it's just another g-boxx bolt-on bike.
Looks rad. Not sure about left hand chain drive next to disk. Good call for a belt perhaps. Getting the Alfine drive to the other side is a sh!t, but doable.New, interesting addition:
https://sites.google.com/site/dcamp2/info
Not bad for a lathe, a hacksaw, and a tig welder.
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hey thanks!Looks rad. Not sure about left hand chain drive next to disk. Good call for a belt perhaps. Getting the Alfine drive to the other side is a sh!t, but doable.
Still a nice looking bike, swingarm may need more bracing but looks well made. Lovin the black finish. Good job.
I don't know if there is enough space in there, but You can make something like thishey thanks!
just have to be really careful with wiping excess chainlube.
Is the left swingarm sticking out further, or did you manage to squeeze rotor and single speed in the space of a cassete?
Yeah, access lube should be wiped off anyway.
What travel, leverage ratio, chainstay length, etc?
Shimano, are you seeing this? Bring out a thinner hub for f*ck sake, or just get the shifting mess tidier so it takes up less room. Surely a 100mm hub for gearbox use could be made.
Chain stays too long?
I'd havee gone sub 17" and with your design, that's the beautiful part of it(it appears), you can.
Sweet- I've always liked Dave's inventions. That bike's better than the Alfine design I worked up a few years ago.i love dc camp creations. this is a great example of how simple a gearbox platform can be - ss or fg hub in the back / frame mounted standard gearhub / chain tensioner. awesome.
Very nice - must've been a lot of work!My custom built carbon trail bike. It was a long time coming but well worth the wait. With a slack head angle, short chain stay and low bottom bracket, she is a super fun bike for throwing around the local trails.
Yeah, not too bad. The wait I eluded to is more the elapsed time since the design was finalized than effort to implement said design. But the molds are re-usable and the layup process is proven so future frames will likely not take as long.Very nice - must've been a lot of work!
youre not gonna leave us hanging without detailsMy custom built carbon trail bike. It was a long time coming but well worth the wait. With a slack head angle, short chain stay and low bottom bracket, she is a super fun bike for throwing around the local trails.
awesome! what the hell is with nz & rad carbon / gearbox bikes? something in the water over there? we demand heaps of details, perhaps a documented build thread even. and make me one!My custom built carbon trail bike. It was a long time coming but well worth the wait. With a slack head angle, short chain stay and low bottom bracket, she is a super fun bike for throwing around the local trails.
It's not like nothing's been going on in ChCh... hope you're all ok down there.Yeah, not too bad. The wait I eluded to is more the elapsed time since the design was finalized than effort to implement said design.....