The NEXUS thread

nickaziz · Oct 28, 2004

What sort of bearing system does it use? What about axel system? Does it have an axel plate like the rohloff?

I want to put a gear hub on my Brooklyn.

Westy · Oct 28, 2004

As far as I know the Nexus is designed as a commuter hub and will not survive abuse very well. I would like to see someone try it out but don't be surprised if after a few rides you have a hub full of shrapnel.

Enginerd A2 · Oct 28, 2004

I'm interested in doing the exact same thing over the winter. I heard that the '05 Nexus Inter 8 was going to be beefed up for potential offroad use. Maybe a call to shimano tech would answer these questions? They'd probably say no and void your warranty on the spot just for hinting at it. Either way, I'd be interested to know.

NastySid · Oct 28, 2004

Filling out shimano warrantyforms isn't very shagadelic..

Most inter 7 hubs i'd seen have died due to rust..

But yeah.. they're heavy and stuff..

The old thumb shifter to the inter 7 will fit most nexus models.. It's the hub that decides the positions.. try to ripp one off some junker and try that.. about the same size as the oldschool XT non sti jobs ..

Resembles the gas on a snowmobile =)

You can replace the driveside complete with axle

So go for it.. You can allways put it on some commuter if it doesn't work out..

Isn't there a way to fabricate some adaptor to the rollerbrake thing? they're splined and stuff so it might work.. Have a looksee

Enginerd A2 · Oct 28, 2004

So the indexing is in the hub? That clears up the shifter question. I'll have to dig up that old deore thumb shifter. And there is a spline underneath the drum brake? Is the inter-8 going to be available in freewheeling form sans drum brake? I can't believe they even put coaster brakes in those things.

NastySid · Oct 28, 2004

KonaJosh said:
So the indexing is in the hub? That clears up the shifter question. I'll have to dig up that old deore thumb shifter. And there is a spline underneath the drum brake? Is the inter-8 going to be available in freewheeling form sans drum brake? I can't believe they even put coaster brakes in those things.

The drum/rollerbrake inter 8 came out in 2004.. I had bikes in the store with it mounted.. The inter 8 coasterbrake is out in 2005..

On the inter7 there is no difference between 4 and 7 gear shifters..

I haven't tried the deore etc (they have indexing in the shifter)

There is a old form of thumblever for the inter 7... before the revoshift things came out.. They're available for the 4sp and the 7sp.. try one of those out?

If you look closely on a rollerbrake hub the "rollerbrake" assembly (sold separatly in the usual shimano manner) has a spline that connects to the hub..

You should be able to mock up something that takes a disc rotor instead..

Or have your LBS check if they dont make 'em allready.. There is nexus discbrakes out there.. Shimano Japan aparantly has 2 pages alone with variants of the LX v-brake alone

NastySid · Oct 28, 2004

Notice them splines??

Enginerd A2 · Oct 28, 2004

I thought them there splines were the splines that the cog mounts to. If the shifting mechanism in the hub is indexed, you can used any shifter that can be used in friction mode, namely an old thumbshifter. I guess shimano hasn't issued a Nexus with neither drum nor coaster brake, at least not in the U.S.

NastySid · Oct 28, 2004

get a old nexus 7 then? who cares about weight on a dh rig?

NastySid · Oct 30, 2004

Actually they are quite sturdy hubs.. I servide postal bikes and they use Nexus 4s and 7s on that stuff.. Also had a lot of kids that seem to think their bike is a gypsy cab or something... They can be 3up on one cycle

Hubs are fine.. The spokes and rims on the other hand.....

D_D · Oct 30, 2004

Do the shimano ones work a lot better than the sram versions? The post office bikes here use the sram hubs and I wouldn't want one on my bike.
They are slow to shift and won't shift at all unless there is very little tension on the chain.
They also feel pretty inefficent especially in the lower gears and for some reason the gripshifter works the opersite way to normal like rapid rise.

The commuter market just doesn't have the same demands on equipment we do, I would try one out before you spend the cash just to make sure you can live with it.

nÃ¦step · Nov 6, 2004

KonaJosh said:
So the indexing is in the hub?

I have a newer model 7 on my street bike and indexing is definitely not internal.

Unless something has recently changed, no, indexing is still at the shifter. They couldn't do it in the hub unless it had a 2-cable pull-pull setup, like the Rohloff Speedhub, or set up some sort of spring return mechanism.

nÃ¦step · Nov 6, 2004

D_D said:
Do the shimano ones work a lot better than the sram versions? The post office bikes here use the sram hubs and I wouldn't want one on my bike.
They are slow to shift and won't shift at all unless there is very little tension on the chain.

Agreed. I build a SRAM Spectro into my wife's pavement pounder. On the plus side, SRAM's 7 speed had a wider gear range than Shimano's. But downshifts don't drop until pedal tension is released, unlike the Nexus which shifts more positively.

Enginerd A2 · Nov 6, 2004

næstep said:
I have a newer model 7 on my street bike and indexing is definitely not internal.

Unless something has recently changed, no, indexing is still at the shifter. They couldn't do it in the hub unless it had a 2-cable pull-pull setup, like the Rohloff Speedhub, or set up some sort of spring return mechanism.

On your street riding bike i.e. it takes some punishment? How is it holding up and what brake configuration are you using? I was wanting to run it on a hardtail for trail and street riding, with a v-brake in the back, I guess. Maybe they'll release a disk compatible version soon? Any idea if there are other shifters that could be used with it? A trigger or thumb shifter with same index spacing perhaps.

nÃ¦step · Nov 6, 2004

KonaJosh said:
On your street riding bike i.e. it takes some punishment? How is it holding up and what brake configuration are you using? I was wanting to run it on a hardtail for trail and street riding, with a v-brake in the back, I guess. Maybe they'll release a disk compatible version soon? Any idea if there are other shifters that could be used with it? A trigger or thumb shifter with same index spacing perhaps.

So that I'm not sending the wrong impression, it's not a jumping bike or urban assualt bike, it's a 700c "getting around" touring type bike. But the gear spread ain't great on this hub, and I have to work to get up the 2 mile hill to my house, and it hasn't failed me yet on that grind.

I've got the coaster brake, and only a coaster brake (no front brake), and it does OK but doesn't inspire confidence.

I've seen the Sram Dual Drive with a disc option, but not Shimano. Has anyone heard anything different?

Shimano has both Rapidfire and twist shifters, but they're special, specific to the hub -- not the derailleur compatible versions.

DHS · Nov 7, 2004

shimano did say that they were coming out with a more burly internal hub this year. it was in a couple different mtb mags

Incubus · Nov 8, 2004

Aren't GT specing the burlier Nexus hub on their g-box DH bike?

zedro · Nov 8, 2004

Incubus said:
Aren't GT specing the burlier Nexus hub on their g-box DH bike?

yeah, supposidly the Nexus-8 Sport. Believe thats whats been keeping this bike at bay.....well that or the bankcruptcy :rolleyes:

bighitfsr · Nov 8, 2004

05 8spd nexus sport with a disc brake !!!

I want !!!!

One of these would rip on my bighit comp (only 5mm of chain growth).
Sweet I knew it must be comming (intergrated hub gearbox with a disc brake).

Also the 05 nexus sport are much more durable as they use roller bearings.

Here is the funky product that I found usiong google which uses the hub:

http://www.scooterbike.com/sb-sports-tech-e.html

Can you order it NOW is the question that remains?

zedro · Nov 8, 2004

bighitfsr said:
One of these would rip on my bighit comp (only 5mm of chain growth).

you would still need a spring loaded tensioner tho.

GeoffW · Nov 8, 2004

This looks pretty sweet, I also found a Sachs with a disk option for $175

http://www.schlickjumper.de/parts/forum1_747.htm - Nexus w/disk option, can't read any german though

largerthan9 · Nov 9, 2004

Our shop is kinda the "Skunkworks" shop for nexus stuff here in San Diego we sell and work on a lot of those hubs...

They sent us a hand full of the red band 8 speed hubs and shifters about 8 months ago and we have had them in operation ever since.

The quality of the red band hub is equal to a XT drive train pretty light and super smooth shifting..
we built one on a Bianchi D.I.S.S. and so far that bike has about 1800 miles on it and it seems to be working perfect...

I will tell you that I opened that hub up about a month ago and it looked clean......

As for the shifters the indexing is in the shifter and the ratio is specific to the hub , meaning that you have to run the shifter that they supply.

I have not seen any disc brake hubs yet but..

largerthan9 · Nov 10, 2004

EVRAC said:
"red band" ?

there is a red stripe on the higher end hub
XT quality, better bearings, much lighter weight over the regular one

no stripe on the regular one...

Alloy · Nov 10, 2004

Here's a cool article from Leelikesbikes.com

John Heim used a Nexus hub with his prototype shaft driven DH bike.

http://leelikesbikes.com/Stories/110304b/

chuffer · Nov 11, 2004

GeoffW said:
This looks pretty sweet, I also found a Sachs with a disk option for $175

http://www.schlickjumper.de/parts/forum1_747.htm - Nexus w/disk option, can't read any german though

the schlick jumper info blurb under the pic reads, '...based on the nexus 7 roller brake hub with a special is2000 adapter.'

the lone review says that the hub is a piece of junk, but the reviewer doesnt really give any specific reason for his negative comments.

HTH

The NEXUS thread

Monkey

Monkey

the teste

crappy

Monkey

crappy

Monkey

Monkey

crappy

Monkey

Monkey

Monkey

Monkey

Monkey

crappy

Monkey

Monkey

Friendly Neighborhood Pool Boy

Monkey

Monkey

Turbo Monkey

bighitfsr

Guest

Turbo Monkey

Monkey

Monkey

Monkey

Monkey

Monkey

Monkey

Monkey

Turbo Monkey