Sorry, I totally don't get this? You mean with 10" long triggers either side??? If not then how are you going to change gears if it's mounted in the centre of the bike, you'd need to take a hand off the grips???
the gearbox thread
- Thread starter xy9ine
- Start date
LOL, cables seem to work fine everywhere else.
Return springs in the triggers.
Right I see what you're getting at now. I disagree, keep both triggers on one side, make it as close to a sram/shimano as possible. No reason to make yourself learn how to change gear again, and why use 2 thumbs when 1 does the job well enough.
It'd take all of ten runs max to get your subconscious to learn it.
It'd be so much easier and neater and take so much less effort just stabbing at one nice big lever. It'd be out of the way of your hands more. It'd be RIGHT, not some compromise based on XC stuff.
But whatever you prefer. Life's too short to accept levers on the wrong side.
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Hi guys,
I'd like to ask those of you who own Lahar piece-of-art or have ever seen Lahar's Speedhub solely (as on the picture that I found in this thread) on some details:
1) Does he use CC axle version (hollow axle for QR) of Speedhub or does he completely disassemble Speedhub and replaces Rohloff axle by his own axle ?
2) Does he remove only these 2 parts: no. 61 (Axle plate OEM) and no.6 (Locking nut) and replaces them by those Alu holders seen on the picture ?
3) Is the secondary sprocket (output, that drives rear wheel) attached to the hub via that thick Alu ring which is attached to the hub shell at the spoke flange ?
4) Does Lahar's Speedhub use Rohloff 13t sprocket (input)? There seems to be a gap between (input) sprocket and hub shell (in the picture) which would corespond to the Rohloff drawing OA01D where 13t sprocket is offset 3.5mm to the right. Or does Lahar use his own (input) sprocket which is offset to the right side to give him more space for output sprocket ?
The reason why I'm asking is I've been designing my AM/EN bike that shall use Speedhub but I decided to follow Lahar's design instead of using Speedhub in the rear wheel. Lahar's solution is pretty nice and I'm wondering that 3.2mm thick spoke flange made of Alu can hold output sprocket. My first idea was to use the spoke holes on both flanges to attach outpur sprocket.
I'd like to ask those of you who own Lahar piece-of-art or have ever seen Lahar's Speedhub solely (as on the picture that I found in this thread) on some details:
1) Does he use CC axle version (hollow axle for QR) of Speedhub or does he completely disassemble Speedhub and replaces Rohloff axle by his own axle ?
2) Does he remove only these 2 parts: no. 61 (Axle plate OEM) and no.6 (Locking nut) and replaces them by those Alu holders seen on the picture ?
3) Is the secondary sprocket (output, that drives rear wheel) attached to the hub via that thick Alu ring which is attached to the hub shell at the spoke flange ?
4) Does Lahar's Speedhub use Rohloff 13t sprocket (input)? There seems to be a gap between (input) sprocket and hub shell (in the picture) which would corespond to the Rohloff drawing OA01D where 13t sprocket is offset 3.5mm to the right. Or does Lahar use his own (input) sprocket which is offset to the right side to give him more space for output sprocket ?
The reason why I'm asking is I've been designing my AM/EN bike that shall use Speedhub but I decided to follow Lahar's design instead of using Speedhub in the rear wheel. Lahar's solution is pretty nice and I'm wondering that 3.2mm thick spoke flange made of Alu can hold output sprocket. My first idea was to use the spoke holes on both flanges to attach outpur sprocket.
looks to me like a standard cut down axle w/ the axle mounts & flush (brass) lock nuts.
yup. it's just a carrier for a standard 5-bolt granny ring bolted through the spoke flange.
standard sprocket & spacing, i believe.
really a great system he's designed. elegantly simple & effective. would make a great standard.
If they brought out a trigger shifter before I got my Lahar I would have went for that but after using the twist shift system on the rohloff.
Its mint.It works and it never misses a beat.
I wouldn't change it now.
Its mint.It works and it never misses a beat.
I wouldn't change it now.
i think that the gear boxes are kool and all but they are to complicated for mountain biking and to many parts to break especially for dh so no matter how big gearboxes get derailleur will always be there
You havent seen a Lahar stripped then.....
Over Complicated it is not....
Over Complicated it is not....
Hi xy9ine,
and do you know what BB width does Lahar's machine uses ? Resp. what minimum Q factor does his solution of Speedhub placement require ?
and do you know what BB width does Lahar's machine uses ? Resp. what minimum Q factor does his solution of Speedhub placement require ?
Shhhh, you have no idea. Read the whole thread, do some research, then comment.Or better still, ride one for a decent amount of time.
Changing 30ml of oil annually and a chain when needed is so far from complicated. With a Rohloff lasting thousands and thousands of KMs there is no more reliable system available at present I don't think(not sure of old Sturmey archers etc).
and reliability and simplicity is not even half of the benefit of a center mounted Rohloff.
Doors wide open for any cheap Lahar bashing comment by anyone stupid enough not to have a valid argument..
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83mm crank. the chainring on my gravity lights is spaced to the inside, so you might be able to go narrower.
Also I want to use 83mm BB because of standard Shimano cranks, most likely new Saints but I don't know space width between their crank arms. This is quite a limiting factor. I measured crank arms distance on my LX crankset with 73mm wide BB, it was cca 150mm. Assuming it could be 160mm on the 83mm wide BB then placement possibilities of 135mm wide Speedhub are getting better
.
New gearbox bike coming out of New Zealand early next year!!
http://www.vorb.org.nz/ftopict-88237.html
Vids: http://www.vorb.org.nz/video-view-96294.html#1776575 & http://www.vorb.org.nz/video-view-101257.html#1870523
Prototype is in steel but production versions apparently in ally, looks like it should be pretty cool, Alfine gearbox mounted in frame, high single pivot like Lahar etc..
http://www.vorb.org.nz/ftopict-88237.html
Vids: http://www.vorb.org.nz/video-view-96294.html#1776575 & http://www.vorb.org.nz/video-view-101257.html#1870523
Prototype is in steel but production versions apparently in ally, looks like it should be pretty cool, Alfine gearbox mounted in frame, high single pivot like Lahar etc..
damn, there's some strange stuff going on there (what is in the nz water?).
link fork:
cool chassis:
moto lahar?
link fork:
cool chassis:
moto lahar?
that new bike is looking good. I love the chassis, I really hope they can make it light enough to compensate for the extra weight of the alfine. although my bike ain't that heavy (alfine equipped) it is still over the 40 pound mark.
hi!
picts from the nicolai trigger shifter prototype!
http://www.flickr.com/photos/tfj77/2994817719/in/set-72157608592911171/
http://www.flickr.com/photos/tfj77/2995658178/sizes/o/in/set-72157608592911171/
tfj77
picts from the nicolai trigger shifter prototype!
http://www.flickr.com/photos/tfj77/2994817719/in/set-72157608592911171/
http://www.flickr.com/photos/tfj77/2995658178/sizes/o/in/set-72157608592911171/
tfj77
Not sure what the deal is with the crazy-high flange, but who cares as long as it works.
Also, there only seems to be one cable, so does this mean shifters for both hands?
tfj77, you have one rad flickr album.
Cool shot of the shifter pawl mechanism.
.jpg)
check this out saw it at a fleamarket here in belgium its a like a bmw moto kinda cool and it looked ww2 old
http://content.ridemonkey.com/photos/view/20090324/sp_a0187-5465.html?ctx=myUser
http://content.ridemonkey.com/photos/view/20090324/sp_a0186-5464.html?ctx=myUser
http://content.ridemonkey.com/photos/view/20090324/sp_a0187-5465.html?ctx=myUser
http://content.ridemonkey.com/photos/view/20090324/sp_a0186-5464.html?ctx=myUser
zerode proto is sickness:
GREAT GOOGLEY MOOGLEY
got any links to more info?
got any links to more info?
a kiwi creation by rob metz (& james dodds i think). about to go into production, apparently. frame mounted alfine gearhub. info is scarce, but sounds like this is the production version:
and yeah, the proto looks like a cross between a lahar & superco, therefore i wants one.
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Wow that looks really good.
Awesome is the word
that is slick. nice work. if the lahar ever dies (actually strikingly similar in design).
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Do you have some specs on that? Do you know what width BB their running? Also how are they dealing with chain stretch/slack and the non-concentric pivot/output sprocket? Looks pretty nice, I like the simple lines of it.
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If you look at the chain that connects the rear hub to the gearbox, check the lower half. It looks like its being pulled up to the seat stay with a tensioner.
...interesting.that is slick. nice work. if the lahar ever dies (actually strikingly similar in design).
Looks really good,
Lets hope it all comes together in a full production. Holds up and doesn't cost more then the market can bare. I can't wait to get on a gear box bike some day...
Lets hope it all comes together in a full production. Holds up and doesn't cost more then the market can bare. I can't wait to get on a gear box bike some day...
Pretty clean and beautiful, can't wait to see details of gearbox mounting and shock linkage. Why didn't they use floating brake caliper?
To MobileChernobyl: Aaron Lahar had to solve the same issue with the chain; attached picture.
To MobileChernobyl: Aaron Lahar had to solve the same issue with the chain; attached picture.
Sprung loaded rollers perhaps.Does anyone know how this can work? Only one chain! my only guess is that the sprocket is not on the main axle, but there are two concentric axles, cranks on the inner one that conects to the outer via gears....
Nah he means how does the gearbox operate, not how does the singlespeed not have slack in it
