Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

7-speed internal hubs

Search
Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

7-speed internal hubs

Thread Tools
 
Search this Thread
 
Old 09-19-04, 10:10 AM
  #1  
Cars are evil
Thread Starter
 
mynameisnotdrew's Avatar
 
Join Date: Sep 2004
Location: Philly
Posts: 112
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
7-speed internal hubs

Has anybody ridden with them?

How about laced to 700's for a (relatively) lightweight, speedy bike?

How do you like the shifters? What kind of pull is it? Do you need the specialized shifter?

How light can you go on them?

Anybody expect the price of the 14-speed hubs to drop below $1000 in the next year or so?

Do you need any special kind of frame/drop out?

Are they quick-release (I hope not)?

How much does a (say) tiagra drivetrain weigh compared to a 7 speed hub?

I hate derailleurs. But I'm not nearly cool enough OR stupid enough to ride a fixed gear around the city.
mynameisnotdrew is offline  
Old 09-19-04, 11:03 AM
  #2  
Senior Member
 
randya's Avatar
 
Join Date: Jul 2003
Location: in bed with your mom
Posts: 13,696

Bikes: who cares?

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time in 1 Post
I like my Shimano 7-speed hubs (I've got 3 of em). One's on an Electra commuter 7 cruiser w/ 700 x 40 tires, another on a Phat chopper 26 x 2, and the last on a Trek L400 commuter 700 x 35. It's very easy to change the range of the hub by changing gear ratios (e.g. by changing the chain ring size). I also have a Sram 7 speed hub on my wife's Kettler 700 x 40. I like the hubs, they are heavier than a derailleur setup but I really don't mind at all, the performance is good.

You could set also up a non-fixed single speed w/ a bmx-style coaster hub and hand brakes, or w/ a coaster brake hub.

Last edited by randya; 09-21-04 at 08:57 PM.
randya is offline  
Old 09-20-04, 10:54 AM
  #3  
Senior Member
 
Join Date: Feb 2001
Location: England
Posts: 12,948
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Likes: 0
Liked 7 Times in 7 Posts
Most hub gears use bolts, not QRs. You really need horizontal dropouts to adjust the chain tension. Its hard to buy a lightweight, sporty bike with hub gears; Trek used to make a good one. Sheldon Brown has a nifty example on his site and Ive seen quite a few experienced UK commuters use similar setups.
MichaelW is offline  
Old 09-20-04, 02:39 PM
  #4  
Senior Member
 
randya's Avatar
 
Join Date: Jul 2003
Location: in bed with your mom
Posts: 13,696

Bikes: who cares?

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Breezer. Bianchi Milano. Trek L-400. Specialized Globe (old model). Tons of Eurobikes.
randya is offline  
Old 09-21-04, 03:06 PM
  #5  
SoCal Commuter
 
DanO220's Avatar
 
Join Date: May 2004
Location: Agua Dulce, CA
Posts: 592

Bikes: Surly Crosscheck single/9 speed convertible, Novara Buzz beater

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I first built my Surly CrossCheck with a Sram 7 speed hub. You do need at least semi-horizontal dropouts. Either that, or use a chain tensioner. But I suspect you're trying to get that traditional, single speed appearance. I picked the Sram over the Shimano because performance wise they were very similar (though I thought the Sram was a LITTLE smoother) but the Sram comes with a quick release click box in the rear which helps tremendously with flat tire repair.

I liked the hub for my 10 mile, relatively flat commute. But on longer, especially hillier rides you'll find that 1st and 2nd gears exhibit so much mechanical friction loss (in short, they feel really rough - like your grinding coffee.) that climbing anything other than gentle grades is not a pleasent proposition. In order to get away from the weight (about 3 lbs for the hub!) and a more efficient climbing bike I ended up swapping the rear for a single speed of all things. I hate derailleurs too. You can have a single speed that's not fixed. Mine is a freewhell mountain bike hub with replaceable cogs. 42x16. I used conventional front and rear brakes. But again, for cruising around town the Sram hub was nice. In fact, I miss the Sram's smooth top gears. I'm still learning to coast down hills. I noticed you're willing to recieve e-mails. I'm going to send you a couple of PDF documents. They're 'articles' about my bike. Just if you're really interested in my internal geared hub experience.

In the end I was also getting a bit intimidated at the prospect of eventually having to tear the thing apart for any maintenance. I downloaded tear-down and reassembly instructions from Sram.com and found them pretty intense... a few special Sram tools required. The hubs are pretty complicated on the inside. Most LBS won't touch them. I love that I can tear down, repair and maintain my single speed at home. Get a stand, some tools, and keep your bike simple. You'll save a lot of money and have a good time wrenching.

DanO

Last edited by DanO220; 09-21-04 at 03:45 PM.
DanO220 is offline  
Old 09-21-04, 03:25 PM
  #6  
Radfahrer
 
Rincewind8's Avatar
 
Join Date: Mar 2004
Posts: 656
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have a Van Dessel "Super Fly" with Shimano 7-speed hub. It is very nice for short rides. (the longest ride I did on it was about 60 miles and I was toast after that. Not so when I did the same ride on my roadbike)
The Super Fly itself is not lightweight and the rear wheel with the hub is quite heavy. It is a 700c. Mine uses a twist shifter and it works very well. You need some way to adjust chain tension so the dropouts have to be at least somewhat vertical. It bolts on.
Unfortunately I feel like it has quite a bit of frictional losses compared to my derailleur equipped roadbike.
If I recall it correctly "Bicycling Science" 3rd edition states friction losses for derailleur equipped bikes at about 5% and for internal gear hubs at about 10%. If you want the exact numbers from the book send me a PM.

To sum up, I like it for ease of use/maintenance, but I don't like it for weight and frictional losses.

Rincewind8 is offline  
Old 09-21-04, 04:14 PM
  #7  
Senior Member
 
randya's Avatar
 
Join Date: Jul 2003
Location: in bed with your mom
Posts: 13,696

Bikes: who cares?

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time in 1 Post
I think the SRAM hub is smoother than the Shimano, but I haven't personally ridden the SRAM hub all that much. To me, the Shimano hubs are a little rough in first and third gears, all the other speeds seem pretty smooth.
randya is offline  
Old 08-23-07, 05:44 PM
  #8  
Member
 
Join Date: Jul 2007
Location: Park City, UT
Posts: 29
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Back to the top for this older post.. I am looking at this and trying to figure out what to do to control the rear internal hub. I sort of want to go single speed but don't want to loose speed and have some slightly lower gears for going up hill. I bought an old 3.5lb s-works frame on ebay that I am pretty psyched about:
https://cgi.ebay.com/ws/eBayISAPI.dll...m=290151866646

I was also thinking of a mustache bar, something like one of these:
https://www.jensonusa.com/store/produ...Handlebar.aspx
https://www.jensonusa.com/store/produ...Alloy+Bar.aspx

Trying to figure out what I would need to control the rear shifter. All of the cruisers I have seen with this type of hub uses as grip shifter. Is it compatible with something more common and easier to use with this type of bar? Thanks, Andre
dieslcruisrhead is offline  
Old 08-23-07, 10:38 PM
  #9  
1 bike 2 many.
 
Butterthebean's Avatar
 
Join Date: Oct 2006
Location: Houston, TX
Posts: 295
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Unfortunately, most internally geared hubs require a twist shifter. But Harris Cyclery sails a nifty little gadget that allows you to attach the shifter to the end of your bars.

https://harriscyclery.net/itemdetails...gId=39&id=1864

It is specifically intended for use with drop bars but would work with some other moustache bars, like the Nitto Moustache bar sold by Rivendell....but not the 2 bars you have picked at Jenson because they have larger diameters.
Butterthebean is offline  
Old 08-24-07, 07:06 AM
  #10  
Senior Member
 
Grand Bois's Avatar
 
Join Date: Mar 2005
Location: Pinole, CA, USA
Posts: 17,392
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 443 Post(s)
Likes: 0
Liked 27 Times in 25 Posts
Originally Posted by Butterthebean
Unfortunately, most internally geared hubs require a twist shifter. But Harris Cyclery sails a nifty little gadget that allows you to attach the shifter to the end of your bars.

https://harriscyclery.net/itemdetails...gId=39&id=1864

It is specifically intended for use with drop bars but would work with some other moustache bars, like the Nitto Moustache bar sold by Rivendell....but not the 2 bars you have picked at Jenson because they have larger diameters.
The old seven speed Shimano hub used a thumb shifter.

Those bars won't work because they have smaller inside diameters.
Grand Bois is offline  
Old 12-12-07, 11:18 AM
  #11  
Senior Member
 
sprockets's Avatar
 
Join Date: Jul 2002
Location: Toronto, Ontario
Posts: 166
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Any thoughts on the Sturmey Archer 8 speed internal hub shifter?
sprockets is offline  
Old 12-12-07, 01:07 PM
  #12  
Senior member
 
Dan Burkhart's Avatar
 
Join Date: Oct 2004
Location: Oakville Ontario
Posts: 8,118
Mentioned: 25 Post(s)
Tagged: 0 Thread(s)
Quoted: 943 Post(s)
Liked 658 Times in 371 Posts
Originally Posted by sprockets
Any thoughts on the Sturmey Archer 8 speed internal hub shifter?
Read what I said about them here.

https://www.bikeforums.net/showthread...82#post5684482

BTW, your signature reminds me of an episode of WKRP in Cincinnati.
Dan Burkhart is online now  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.