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Author Topic: Anything but rear derailers  (Read 1540 times)

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Offline zoom

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Re: Anything but rear derailers
« Reply #15 on: January 07, 2010, 01:54:37 PM »
If you get the carbon one (X0?) it doesn't bend because it's carbon, they last much longer than aluminium ones, in fact I've never broken a carbon one whereas I used to get XT derailleurs four at a time from the states because I used to go through so many of them. Once an aluminium derailleur is bent they never work properly again.
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Offline mike

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Re: Anything but rear derailers
« Reply #16 on: January 07, 2010, 02:17:05 PM »
Still I find it's not the cage I bend, it's the body.

And the X0 has a metal body aswell.
 

Online wal

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Re: Anything but rear derailers
« Reply #17 on: January 07, 2010, 02:26:25 PM »
I carry around two spare hangers just in case.
But naa, the hanger didnt break. :(

Im fickle. Im prepared to go back to shimano and try Alfine.
http://www.swmtbc.asn.au/
They should make derailleur hangers in the shape of a bottle opener, everyone would carry a spare.

Offline mike

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Re: Anything but rear derailers
« Reply #18 on: January 07, 2010, 02:27:29 PM »
DON'T DO IT WAL!
 

Offline scratchy

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Re: Anything but rear derailers
« Reply #19 on: January 07, 2010, 02:31:19 PM »
I thought the X0 was fully rebuildable (from memory).

Online wal

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Re: Anything but rear derailers
« Reply #20 on: January 07, 2010, 02:42:52 PM »
Im convinced that the rear derailer and cluster is a bad hangover form the road bike, where the path is smooth and without the dangers of rocks and sticks.
Its all going to change to gearbox or internal geared hub.

We are all followers of the road bike. :(
« Last Edit: January 07, 2010, 06:04:56 PM by wal »
http://www.swmtbc.asn.au/
They should make derailleur hangers in the shape of a bottle opener, everyone would carry a spare.

Online wal

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Re: Anything but rear derailers
« Reply #21 on: January 18, 2010, 11:17:31 AM »
How are you going to talk me out of trying this?

http://www.swmtbc.asn.au/
They should make derailleur hangers in the shape of a bottle opener, everyone would carry a spare.

Offline Jagman

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Re: Anything but rear derailers
« Reply #22 on: January 18, 2010, 11:27:58 AM »
It's ugly, that's how.

How do they go for weight compared to a normal hub and derailleur (taking into account the shorter chain)?
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Offline Backdoor

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Re: Anything but rear derailers
« Reply #23 on: January 18, 2010, 12:05:00 PM »
Do it Wal!
Tell us if a commuter hub is up to offroad scallywaggery
I call it this emotion plebbed. I picked this word as it isn't a word in the dictionary and i want to claim it lol.

Offline russthedog

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Re: Anything but rear derailers
« Reply #24 on: January 18, 2010, 12:32:54 PM »
Do it Wal!
Tell us if a commuter hub is up to offroad scallywaggery


Alfine is designed for commuters but is extremely strong and far superior to the Nexus model.

Whilst mine rarely goes off road, I smash around the streets on and off kerbs/ drains etc (somewhat comparable to off road) and it has been sweet!

My negative comments are I wish I could shift multiple gears in one push (not one gear with each click) and removing the wheel is a bit more of a pain than normal but its not that bad. Oh yeah you can use thye Nexus twist shifter with it if you want, I know youre a fan Wal :)

Weight is 1.5kgs so heavier than a normal hub and derailleur arrangement even including the shorter chain.

I looked at this good review before I bought:
Quote
I'm a 245 lb rider (plus work clothes) and have put about 350 miles on a Felt X-City 1 with the Alfine disc hub.

The good parts:

Shift standing still or in the middle of "emergency" braking-- I can fire off four downshifts in 1.5 seconds as I'm slowing down and ride off sideways without falling over.

You're coasting, but when you start to pedal the gears engage very quickly, maybe 1/12 of a revolution. Much quicker than my XTR.

Gear 5 is direct. I'm a high-cadence, knee-saving, I'll-get-there-when-I-get-there kind of rider, but sometimes you want to stand up and blow away a hill. Gear 5's like a fixie.

The high gears shifting. When you crest a hill doing about a 60 cadence in 5th gear, you can upshift once per pedal revolution as your cadence increases and often you won't feel the shift.

If you stop pedaling, you can hear what's going on around you because there's no clicking.

Chain will never jump. I've had a chain jump in the middle of an intersection taking a left turn in traffic and it really pisses off the cars to watch someone hobby-horse a bike to safety after taking their lane.

Almost no dish should help wheel durability.

Downsides:

Gear range. I want a lower granny gear but I like where gear 5 is for cruising so I won't swap a chainring or cog.

Gear spread. I don't use a cycle computer, but I almost always feel like I'm spinning too fast with too little power when I am climbing in gears 1-5. Upshifting would put my cadence too low for comfort.

Noises and feel: I test rode the Trek SoHo and the Alfine hub was extremely quiet. Mine seems different. The low gears make running sounds. Downshifting under load sometimes makes a gear run with sound until you let up. You would think 5 (direct) would be silent and lack vibration, but strangely enough, it feels like minor stuff is loose, like it wants to shift. Gear 6 isn't direct but feels better (through the pedals).

I also noticed a jelly-gear effect starting up in higher gears but it doesn't matter because I almost always start in gear 1.

Mass: I could just be the stout frame, lack of click-in pedals, my overall weight and lack of technique, but the rear wheel seems to really smack into rather than float over obstacles (using 35mm tire vs. the stock 38mm).

Overall--I love it. I plan to do the hubstripping.com oil bath some day. If I had the cash, I'd pick up an iMotion 9 for comparison. I would buy it again

http://www.bikeradar.com/gear/category/components/hubs/product/alfine-disc-hub-31670
« Last Edit: January 18, 2010, 12:39:12 PM by russthedog »

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Re: Anything but rear derailers
« Reply #25 on: January 18, 2010, 12:52:25 PM »
Oh yeah you can use thye Nexus twist shifter with it if you want, I know youre a fan Wal :)

whoo hoo.

struggling to get a price but I just emailed shimano.

So roughly how much did it set you back?
http://www.swmtbc.asn.au/
They should make derailleur hangers in the shape of a bottle opener, everyone would carry a spare.

Offline russthedog

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Re: Anything but rear derailers
« Reply #26 on: January 18, 2010, 01:06:20 PM »
from memory it was just under $500 for the rear wheel, that includes hub spokes and rim. Got a mavic rim.

Ill check the invoice tonight and give you an exact amount but i think it was $470 for the whole lot meaning just the hub was probably around $350??

Online wal

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Re: Anything but rear derailers
« Reply #27 on: January 19, 2010, 02:19:20 PM »
Reply from shimano


Hello John,

Thanks for contacting Shimano.

The SG-S501 hub (new model) weighs 1590g.

This hub works best with the SL-S500 shifter, and for dual suspension a
CT-S500 chain tensioner is required.

For pricing and delivery times, contact your local bike shop.

I hope this is helpful, feel free to contact us again.

Regards,
Daniel./i]
http://www.swmtbc.asn.au/
They should make derailleur hangers in the shape of a bottle opener, everyone would carry a spare.

Offline Jagman

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Re: Anything but rear derailers
« Reply #28 on: January 19, 2010, 02:27:57 PM »
So you need to add a chain tensioner into the weight equation?

They're $234 at Chain reaction at the moment. 135mm spacing, and centrelock rotors.
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Offline Deano

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Re: Anything but rear derailers
« Reply #29 on: January 19, 2010, 03:15:43 PM »
Hey Wal,
Just did a quick weight comparo.
using slx gear, cass 282,hub 384,qr 64,der 253,chain 304 = around 1290g
alfine hub 1590, tensioner 100, chain 200, = around 1890g
So a difference of around 600 g heavier.
 

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