group hug and toast to the future of bikes!
the gearbox thread
- Thread starter xy9ine
- Start date
Here, here!
oh n faith? I wasn't referring to you or other monkeys when the body part was mentioned, it was a generalization
considering the context of this thread, you say some of the dumbest things on RM ...
Stupidity can often be with the onlooker. I come here to share knowledge,it's a two way street.I can only try to help,or give light joyous banter to ease the harsh reality.
Damn. I want that.Well Monkeys,
Heres one in Silver ano.......sweet!
Boy funny how new ideas always seem to spark conversation
Damm Squirrel, what makes you think you can break it........just because you're 6"7' and built like an M-1 Abrams Battle tank!
Besides its a med and you'ed look like you were riding a BMX bike!
Besides its a med and you'ed look like you were riding a BMX bike!
I can knock my knees on the handlebars with the best of em!!!
On the brightside, my RL9 is going on it's 3rd season with no ill effects!!! HA!
Yeah Baby,
Built tuff for playin in the ruff!
Built tuff for playin in the ruff!
Hmmm,
seems that Truvativ is on to something.....
http://www.pinkbike.com/news/2008FollowMeToTheFuture.html
UncaJohn
seems that Truvativ is on to something.....
http://www.pinkbike.com/news/2008FollowMeToTheFuture.html
UncaJohn
Thats what I always say!!!
Hey Bri,
I'll call you later this evening and talk team stuff for you and bro.
I'll call you later this evening and talk team stuff for you and bro.
UncaJohn,
I followed the link as I am sure you did but it only went to a register here for more info site.
Tried Google, lots of ref to Srams hub units but nothing soild about a gearbox. I guess there's ref to a German test or somthing like that.
To much to do, so I didn't search long.
Time will tell, I am curious regardless.
I followed the link as I am sure you did but it only went to a register here for more info site.
Tried Google, lots of ref to Srams hub units but nothing soild about a gearbox. I guess there's ref to a German test or somthing like that.
To much to do, so I didn't search long.
Time will tell, I am curious regardless.
sounds like a chainring gearbox setup of sorts. unfortunately looks like it doesn't replace the rear mech (if this info is correct, of course).
edit - looks like this is covered in the sram gearbox speculative thread...
edit - looks like this is covered in the sram gearbox speculative thread...
yeah, looks like it will only replace the 2 in a 2x9 setup.
Check it out, no exactly what I was thinking when I envisioned a gearbox.
I'd be curious to see how it works in real life.
http://farm4.static.flickr.com/3114/2330829703_8de1b755e6_b.jpg
I'd be curious to see how it works in real life.
http://farm4.static.flickr.com/3114/2330829703_8de1b755e6_b.jpg
translation anyone?
Yep, you're right, but i had to post that link anyway, just in case someone would find something more to post.
Damn, i do hate those marketing tricks!
UncaJohn
Didn't see this posted (A Sram gearbox on the cannondale)
http://www.cannondale.com/bikes/video/onBike.html
http://www.cannondale.com/bikes/video/onBike.html
wow they took a millyard and made it into some kind of commuter-mountain-hybrid-somethinruther
Looking tasty
Sully your the man! haha
Awesome.
can these gearbox bikes use a 12 by 150mm hub with a singlespeed cog on it?
That should work with the g-con standard bikes.
Other versions are all over the map, including left side drive.
I'm not sure, but I believe the best hub for a g-boxx bike would be fixed, because the gb has it's own ratchet. They need to make symmetrical hubs with a standard 6-bolt flange on both sides and just bolt a six-hole cog directly on.
Those are some rad details. Love the onboard brake.
Reminds me of this bike:
http://www.krutor.cz/bikes/hrotor/cz.htm
Looks like they made almost every part except the tires!
Reminds me of this bike:
http://www.krutor.cz/bikes/hrotor/cz.htm
Looks like they made almost every part except the tires!
now if some of these crafty euros would focus their talents on something more race oriented than tank...
I don't think the brake is a good idea for the simple fact that if the chain breaks or derails that you have no brakes. It does decrease unsprung mass however.
You still have the front break.
As i can see most of these designs are using a geared hub (one of mine designs is working towards this direction too, as it is way safer than machining from zero a new gearbox).
I guess that it would be really helpfull to share any knowledge about these parts (geared hubs).
A very helpful site is:
www.hubstripping.com
Anyway one of my considerations is if i can toss the shell of the hub in order to use the internal mechanism (i guess not as there are some planet gears attached from the inside of the hubshell) and combine the gearing of a (let us assume now) 3-speed Shimano with the internals of a Alfine in a mutual shell like a gearbox carter......
Welll, the main problem is that i'll have to buy & take apart those parts in order to determine if this is possible!
Also.
One of my consideratios, what actyally slows me down is that i like things to be a bit simple. Overcomplicated solutions are good only at the early design stages. we all know that a simpler design is less prone to fail and way easyer to servece (never forget the S- Factror!)
UncaJohn
I guess that it would be really helpfull to share any knowledge about these parts (geared hubs).
A very helpful site is:
www.hubstripping.com
Anyway one of my considerations is if i can toss the shell of the hub in order to use the internal mechanism (i guess not as there are some planet gears attached from the inside of the hubshell) and combine the gearing of a (let us assume now) 3-speed Shimano with the internals of a Alfine in a mutual shell like a gearbox carter......
Welll, the main problem is that i'll have to buy & take apart those parts in order to determine if this is possible!
Also.
One of my consideratios, what actyally slows me down is that i like things to be a bit simple. Overcomplicated solutions are good only at the early design stages. we all know that a simpler design is less prone to fail and way easyer to servece (never forget the S- Factror!)
UncaJohn
GT, Nox and Solid have all made bike using just the internals from nexus hubs mounted in their own shells. The shells are then part of the frame. All these bikes end up with left side final drive and a non-concentric pivot location. Combining an Alfine and 3-speed seems overcomplex for sure. Do you really want 24 gears?
Well, yes.
And i am not talking about the number of the speeds (a CVT would be really nice) but more for the range of the gearing system.
That's because what i need is a bike that can climb too.
The groung here at Greece is really steep. After every downhill a steep climb follows..... and all these through narrow steep trails that require long trave suspension bikes (once upon a time considered DH overkill rigs).
So the range of the gearing has to be a bit wider than of a pure DH bike (hope this won't spoil the mood).
In my desing i have reached a point (in designing right now, as i am adding a Gearbox into my patended ssuspension design) were i can replace on the same frame the suspencion element that will carry the Gearbox mech.
So i can use the following combinations:
-An Alfine hub as Gearbox (for Pure DH - less speeds)
-A Speedhub (to go where no roadie will ever go)
-Experiment with some ideas of mine (CVT)
Now, one of the problems that keep slowing me down is that i'll have to actually buy a (let's say) Allfine & take it apart in order to see if i can modify it!
So i'm leaving this part for last while talking to people like you, trying to get as much info as i can!
UncaJohn
And i am not talking about the number of the speeds (a CVT would be really nice) but more for the range of the gearing system.
That's because what i need is a bike that can climb too.
The groung here at Greece is really steep. After every downhill a steep climb follows..... and all these through narrow steep trails that require long trave suspension bikes (once upon a time considered DH overkill rigs).
So the range of the gearing has to be a bit wider than of a pure DH bike (hope this won't spoil the mood).
In my desing i have reached a point (in designing right now, as i am adding a Gearbox into my patended ssuspension design) were i can replace on the same frame the suspencion element that will carry the Gearbox mech.
So i can use the following combinations:
-An Alfine hub as Gearbox (for Pure DH - less speeds)
-A Speedhub (to go where no roadie will ever go)
-Experiment with some ideas of mine (CVT)
Now, one of the problems that keep slowing me down is that i'll have to actually buy a (let's say) Allfine & take it apart in order to see if i can modify it!
So i'm leaving this part for last while talking to people like you, trying to get as much info as i can!
UncaJohn
Rohloff has just the thing for you:huh:
Good,now the testing's done,you can build them for the rest of us.