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the gearbox thread

boostindoubles

boostindoubles

Nacho Libre
Mar 16, 2004
7,417
5,589
Yakistan
@toodles

There is a trail like that where I was riding in Oregon the other weekend. Step down then scrub then boost...etc... etc...

I almost died and luckily my pedal dug into my shin and kept me from going over the bars. Even pre-walking a trail like that doesnt help much. If your hanging out with the homies sessioning jump to jump thats one thing but riding it as a line is impossible to hit everything safely and properly.
 
ianjenn

ianjenn

Turbo Monkey
Sep 12, 2006
2,979
685
SLO
sethimus said:
www.instagram.com

WRP Pty. Ltd. on Instagram: "Dr said no screens after my Crankworx concussion. Trying to use the time wisely. Honda who?"

82K likes, 494 comments - williamsracingproducts on October 31, 2022: "Dr said no screens after my Crankworx concussion. Trying to use the time wisely. Honda who?"
www.instagram.com www.instagram.com
Click to expand...

So wait is he claiming the bike can jump all gears while not pedalling and has what the first Honda Boxes had in them an infinite range? Like no fixed teeth? Or is he doing the one UCI made Honda go to and slap a dearilure in a can?
 
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E

ebarker9

Monkey
Oct 2, 2007
810
211
From what I've seen on his IG, it is definitely not an infinite range setup. It uses a cassette, but isn't quite the same as the later Honda design. He states that "Their chainring actually moved and they had a derailleur. With this the cassette shifts and the chainring always stays straight". Pretty cool either way.
 
slimshady

slimshady

¡Mira, una ardilla!
Dec 20, 2007
5,156
3,002
A long time ago, in a galaxy far, far away...
sethimus said:
www.mtb-news.de

Getriebe schaltet elektrisch: Pinion Smart.Shift bei Gamux gesichtet

Das Gamux Sego beherbergt eine neue Version des elektrischen Pinion Smart.Shift-Getriebes. Dieses soll unter voller Last schalten können.
www.mtb-news.de www.mtb-news.de

electric pinion
Click to expand...
It's been also covered by Vital, without 64-letter words!
www.vitalmtb.com

Pinion SmartShift on Gamux Prototype DH Bike

Fresh from Lenzerheide and the Gamux pits. No more gripshift, now electronic trigger shifter. Can shift while coasting. More deets at Eurobike. photos by Jack Rice
www.vitalmtb.com www.vitalmtb.com
 
troy

troy

Monkey
Dec 3, 2008
951
646
Pretty excited for the wrp. Had a chance to ride a city bike equipped with a pinion gearbox. What a disapointment...
 
troy

troy

Monkey
Dec 3, 2008
951
646
Happymtb.fr said:
Any details you're willing to share?
Click to expand...
Super sluggish, kinda like nexus 8 hub, not even on alfine level. Shifting was so so, especially under load (but thats understandable considering the planetary gears and all this bs inside). Gripshift, don't even get me started. 2 cables, shitty grip, lots of drag, wtf is this? 2001 back again?
 
Happymtb.fr

Happymtb.fr

Turbo Monkey
Feb 9, 2016
1,785
1,132
SWE
Thanks @troy
The new pinion with integrated motor has electrical shifting which might (or might not?) solve the issues you mentioned above.
 
vivisectxi

vivisectxi

Monkey
Jan 14, 2021
395
477
yeast van
i spent a good amount of time on a zerode. while it functioned *fine* as a bicycle, the list of nitpicks (weight, expense, drag, poor engagement, gripshift, inability to shift under minimum load) placed me firmly in the "not converted" camp.

the ebike integration addresses most of these issues, so seems like a step in the right direction - for ebikes.
 
slimshady

slimshady

¡Mira, una ardilla!
Dec 20, 2007
5,156
3,002
A long time ago, in a galaxy far, far away...
The new Gamux bike with pinion and electronic shifting supposedly addresses most of the complains (slow shifting, button shifter instead of gripshift, has a torque sensor to help with shifts under load, etc).

www.vitalmtb.com

Pinion SmartShift on Gamux Prototype DH Bike

Fresh from Lenzerheide and the Gamux pits. No more gripshift, now electronic trigger shifter. Can shift while coasting. More deets at Eurobike. photos by Jack Rice
www.vitalmtb.com www.vitalmtb.com

Time will tell.
 
djjohnr

djjohnr

Turbo Monkey
Apr 21, 2002
2,942
1,643
Northern California
slimshady said:
The new Gamux bike with pinion and electronic shifting supposedly addresses most of the complains (slow shifting, button shifter instead of gripshift, has a torque sensor to help with shifts under load, etc).

www.vitalmtb.com

Pinion SmartShift on Gamux Prototype DH Bike

Fresh from Lenzerheide and the Gamux pits. No more gripshift, now electronic trigger shifter. Can shift while coasting. More deets at Eurobike. photos by Jack Rice
www.vitalmtb.com www.vitalmtb.com

Time will tell.
Click to expand...
That seems like a lot of cost/weight/complexity just to get rid of a derailleur.
 
jeremy_2640

jeremy_2640

Monkey
Oct 4, 2007
114
42
Melbourne
djjohnr said:
That seems like a lot of cost/weight/complexity just to get rid of a derailleur.
Click to expand...
Really? All the fragile moving bits sitting inside a sealed box. Cost of Transmission $2.7KUSD, cost of Pinion with belt, sprockets, tensioner $2K USD. The weight difference is well under 1KG with the Zerode I built vs my previous enduro bike.
 
Gary

Gary

"S" is for "neo-luddite"
Aug 27, 2002
6,782
4,794
UK
djjohnr said:
That seems like a lot of cost/weight/complexity just to get rid of a derailleur.
Click to expand...
I don't really see an issue there. Considering it's aimed at clumsy fuckers who pedal their mechs straight into rocks going UPHILL and then blame the derailleur. And many of these same fuckwits aren't afraid to spend £10k+ on a bicycle and often don't even do work on their own bike themselves.
 
djjohnr

djjohnr

Turbo Monkey
Apr 21, 2002
2,942
1,643
Northern California
jeremy_2640 said:
Really? All the fragile moving bits sitting inside a sealed box. Cost of Transmission $2.7KUSD, cost of Pinion with belt, sprockets, tensioner $2K USD. The weight difference is well under 1KG with the Zerode I built vs my previous enduro bike.
Click to expand...
It's all a matter perspective of course - if it makes sense for you go for it.

It's very very rare for me to destroy a derailleur unless it's on my DH bike, and even that doesn't happen often. If it does, I have a spare in my toolbox in the parking lot that cost me $60 USD. On the pedal bikes I carry a spare derailleur hanger in my tool wrap in case I ever need it, although I've never actually had to change out a hanger mid-ride, and it's been quite awhile since I've had to even straighten one.

I like the idea of a gearbox in theory, but the reality isn't practical to me - I can think of other things I'd rather throw $2k at.
 
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