the gearbox thread
- Thread starter xy9ine
- Start date
That's cool. It's like a Geometron with a gearbox.
buy it, youve been on g boxes for like 15 years now?
yeah, the gb enthusiasm has waned somewhat over the years. i would have thought we'd have fully embraced & significantly refined the tech by now, but progress has been slow. today's conventional drivetrains are pretty damn effective and reliable, and current gb's still have nagging issues. le sigh.
The bike is worth $1,000. But the BMW Shin burgers and the weight of shipping a tank make up the other $1,500.
I offered him $1200 shipped just now. I’d legit do it for that figure. $2675 shipped as it is now is rich for 24” and old geometry.
solid plan, right there
this is rad. paul brodie tracked down his one of a kind gearbox bike (from 1998) and performed a loving restoration.
before:
after:
neat build thread:
https://www.cycleexif.com/brodie-69er-restoration
i used to race with the original owner; this bike was partially responsible for sparking my gearbox infatuation.
before:
after:
neat build thread:
https://www.cycleexif.com/brodie-69er-restoration
i used to race with the original owner; this bike was partially responsible for sparking my gearbox infatuation.
saw this the other day on a vintage DH FB group i'm in. rad as hell.this is rad. paul brodie tracked down his one of a kind gearbox bike (from 1998) and performed a loving restoration.
before:
after:
neat build thread:
https://www.cycleexif.com/brodie-69er-restoration
i used to race with the original owner; this bike was partially responsible for sparking my gearbox infatuation.
I designed a gearbox for high-pivot DH bikes.
I did a presentation on it for my school.
Here's a video. Sorry about the quality, it gets better a few minutes in. There's a link in the video description to the slide show for better quality images.
I did a presentation on it for my school.
Here's a video. Sorry about the quality, it gets better a few minutes in. There's a link in the video description to the slide show for better quality images.
Nice work! Are you getting a frame built around it? What’s next?
EVRAC- that is awesome! As a true gearbox nerd too I totally appreciate the time, thinking and effort that went into this. As someone who has owned g-boxx2 and Alfine (ZerodeG2) gearboxes I reckon this type of design is the next step. Put me on the waiting list!
Effigear have been working on a new box with the pinion mounting pattern. Great for existing pinion bike owners. Anyone got any more info?
Photo source: effigear Instagram
Photo source: effigear Instagram
2 year bump. Looks like someone is trying to revive the effingear for some dh/enduro action. The price on this bike doesn't seem horrible for the park version.
https://www.cavalerie-bikes.com/en/141-anakin-freeride.html
https://www.cavalerie-bikes.com/en/141-anakin-freeride.html
holy damn, birthed this thread 18 yrs ago... was pretty sure at the time that gearboxes would have supplanted the lowly derailleur well before now. alas...
They added motors to bikes before proper gearboxes. Somehow you need to generate income. All those $500 derailleurs, $350 cassettes, etc....
Gearbox on e-bike makes sense to me
Effigear and Valeo made one.
www.effigear.com
Available on this bike
ateliers-heritagebike.com
Effigear and Valeo made one.
Smart e-Bike System
www.effigear.com
Heritage Altitude | VTT électrique d'exception | Fabriqué en France
Découvrez le VTT électrique haut de gamme Heritage Altitude. Alliant performance ultime et élégance, ce VTT vous offre une expérience de pilotage inégalée.
ateliers-heritagebike.com
Yeah reading the beginning of this thread it seemed like gearboxes were going to be huge. But instead they're almost dead, almost because I think we now have 4 bike brands offering them unless I'm missing any.
Zerode (pinion)
Starling cycles (effigear)
Nicolai (pinion)
Cavalerie (effigear)
Zerode (pinion)
Starling cycles (effigear)
Nicolai (pinion)
Cavalerie (effigear)
derailleur drivetrains have come a ways since then as well. clutches, wide range single ring, narrow wide, more robust mechs. while current gearboxes haven't really improved much over the years. still dealing with added weight & expense, added drag, relatively poor shifting, etc. and i don't see any significant breakthroughs on the horizon - with the exception of ebike integration, where weight & drag issues (and potentially shifting with electronic integration) are somewhat nullified.
i did spend some time on a zerode; not a bad bike, but cemented my disinterest in the current state of gearbox tech.
tho i've almost got the old lahar up & running again (for nostalgic giggles).
i did spend some time on a zerode; not a bad bike, but cemented my disinterest in the current state of gearbox tech.
tho i've almost got the old lahar up & running again (for nostalgic giggles).
williams racing products (trinity bike) working on the most interesting one:
WRP Pty. Ltd. on Instagram: "Again, still not finished - but you get the idea. This uses part of the CentreHub patent to axially offset the chainring from the crank arm (in this case an offset of 58mm) to sit inboard the frame. I should also note, this uses all stock Sram parts: cassette, shifter, cranks, bottom bracket and chainring. Everything is in a “box” now. @trinity_mtb"
15K likes, 241 comments - williamsracingproducts on July 17, 2022: "Again, still not finished - but you get the idea. This uses part of the CentreHub patent to axially offset the chainring from the crank arm (in this case an offset of 58mm) to sit inboard the frame. I should also note, this uses...
www.instagram.com
especially combined with their 2way o-chain variant with instant engagement
yeah, the trinity is rad. the most promising development in a while. standard cassette on a linear actuator is pretty cool.
haven't seen a mockup with a tensioner yet, but assume there's room above
haven't seen a mockup with a tensioner yet, but assume there's room above
Seems like Bombardier is betting on the gearbox segment's grow in the near future:
Canada's Bombardier is new owner of gearbox maker Pinion
DENKENDORF, Germany (BRAIN) — Canada's Bombardier Recreational Products has taken a majority share in Pinion GmbH, the German maker of gearbox drivetrains for bikes and e-bikes.BRP is the owner of Ski-Doo and Sea-Doo, among other brands, including Rotax and Great Wall Motor Austria powertrain...
www.bicycleretailer.com
^evidently they've just released electric can-am motos; diversifying into ebikes isn't much of a stretch i guess. i've no doubt derailleur drivetrains on (high end) ebikes are gonna die out in relatively short order. too much torque through systems clearly not designed for it.
Ahh, that's yours; saw that on intend's insta. Thats a sick looking fork; how's it working?
Is your bb around 375mm? Mine seems impossibly high and short?
that IS high. mine is about 360mm. possible over length shock? granted the forward shock mount brackets varied a bit. i've got both a set of the two part mounts (like the bike above) and the later water jet ones that have two mounting options (mine is set in the lower).
I dont know tbh as I haven't measured it yet, the thing is with the lahar once your on it and have sag the BB drops.
Ok, I didn’t know about the 2 position shock mount. What i2i shock are you guys running. I put a 222mm on there. I couldn’t imagine it needing a 215mm just because the leverage ratio would be so high.
