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

Wheelset Upgrade Recommendations: 7-speed to 10-speed

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.

Wheelset Upgrade Recommendations: 7-speed to 10-speed

Old 08-21-10, 02:18 PM
  #1  
Jon130
Junior Member
Thread Starter
 
Join Date: Apr 2010
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Wheelset Upgrade Recommendations: 7-speed to 10-speed

Looking for some advice from someone(s) who has been there and done that in this situation.

We just picked up an older 47cm (1998, 1999?) Cannondale Cad2 R300 w/650c wheels for my girlfriend's first road bike. It's equipped with Shimano RSX (3x7) brifters and derailleurs. The bike is solid but the rear wheel has a dent in the braking surface and is just generally worn out.

We want to buy a new wheelset. Hopefully something we can upgrade to 10 speed later on as I upgrade from the 2009 Shimano 105 components on my bike. Thankfully the hub spacing on the rear is 130mm, which should make the frame compatible with the current wheelsets for 8/9/10 speeds if I'm not mistaken.

What we'd like to do is buy a new 8/9/10 speed compatible wheelset and use the current HG50 7-speed cassette for now and move the 105 group over to this bike once I upgrade. My understanding is that we may have to buy a 4.5mm spacer if one isn't already on the bike. My guess is that with the 130mm hub spacing, there is already one present.

Am I on track? Am I missing something? Am I headed for disaster? Any feedback from folks that have some experience in this would be very much appreciated.

Oh, and, second question. Since the shift indexing occurs at the shifter and not the derailleur, is it possible to use 10-speed Shimano 105 brifters and NOT change out the old RSX derailleurs? My thinking is that the derailleurs still have the same overall range of movement even though the increments will be much smaller. I know it seems a little silly to swap out the expensive parts but not the inexpensive ones, but it would be nice to know in case we can't budget for the derailleurs right away.
Jon130 is offline  
Old 08-21-10, 02:48 PM
  #2  
achoo
Senior Member
 
Join Date: Dec 2009
Posts: 4,700
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 5 Times in 4 Posts
This wheel will last her forever:

https://www.coloradocyclist.com/product/kit/SSFCEUDM

Go with 32 hole, 3-cross, 14/15 gauge spokes and it'll be bombproof.

Not sure offhand if you could put the 7-speed cassette on that wheel or not, but that wheel is hard to beat.
achoo is offline  
Old 08-21-10, 03:09 PM
  #3  
MadBuddha1
Senior Member
 
Join Date: Feb 2009
Location: Seattle, WA
Posts: 83
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I've tried to use a 9 speed cassette with a 7 speed derailer and it'll shift but the derailer does not have the range to shift into all the gears. Using a ten speed shifter with a 7 speed cassette and derailer might work, just be careful of not forcing a shift, could break the shifter. That's a lot of extra work and some potentially frustrating tuning ( in theory it can work but a 12 yo derailer is probably a little bent and old pulleys etc) though considering a derailer is like $40 on ebay.. Wheels should be compatible and you'll need the spacer with the newer freehub...
MadBuddha1 is offline  
Old 08-21-10, 03:19 PM
  #4  
JTGraphics
Senior Member
 
JTGraphics's Avatar
 
Join Date: Dec 2006
Location: So Cal
Posts: 2,678
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Yes to use a 7 speed cassette on an 8/9/10 speed hub you will need a 4.5 mm spacer to fit a 7-speed cassette onto a hub made for 8-, 9-, or 10-speed cassettes.
So you can do as you are thinking, later changing the 105 10 speed levers and the cassettes to a 10 speed will work.


Madbuddha1
The the RD has nothing to do with the probelm you had the RD will work, the levers are whats needed to get it to move the full 10 speed sweep with the correct spacing.
__________________
It may not be fancy but it gets me were I need to go.
https://www.jtgraphics.net/cyclist_bicycles.htm

Last edited by JTGraphics; 08-21-10 at 03:22 PM.
JTGraphics is offline  
Old 08-21-10, 03:31 PM
  #5  
MadBuddha1
Senior Member
 
Join Date: Feb 2009
Location: Seattle, WA
Posts: 83
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Well most 7 speed derailers wont have the range to say accomodate a 12-29 9 speed cassette, it'll shift fine through most of the gears because you're correct about the indexing being in the shifters but the cage and spring etc is only so long, just saying to visually check the range of the RD sans chain before installing the shift cables
MadBuddha1 is offline  
Old 08-21-10, 04:14 PM
  #6  
Jon130
Junior Member
Thread Starter
 
Join Date: Apr 2010
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Thanks guys. Both of you are making sense to me.

I'm going to order up a set of Xero XR-1s because they seem to be rated ok, aren't super heavy, and I can get a brand new set of 650c's for less than $100 including shipping. No sense putting a $500 wheelset on a $250 bike.

Just thinking through logically, MadBuddha may be right about the derailleur. That extra 4.5mm of range may not work so well. I do have to say for such an old bike the drivetrain seems to be in excellent condition. Everything works as it should and very smooth. Not as snappy as my 105s, but considering we're comparing a midgrange group from 2009 to a bottom of the line group 10 years older, things are pretty well in order. I already have one Ultegra 6600 brifter on my bike since the original left 105 had to be replaced by Shimano after about 200 miles. Pretty sure I'll just pick up the other Ultegra and move the 105s to the older bike eventually. Guess I'll just blow that dust off my wallet and order up the derailleur too just to be safe.

I still think this worked out rather too well picking up this bike for next to nothing, finding a functional wheelset for cheap, and actually having an easy upgrade path. When's the other shoe going to drop??

Thanks guys!
Jon130 is offline  
Old 08-21-10, 04:27 PM
  #7  
davidad
Senior Member
 
Join Date: Feb 2009
Posts: 6,621
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 556 Post(s)
Liked 159 Times in 128 Posts
The Xero doesn't have enough spokes to be a reliable wheelset. The free hub is interchangable with Campy and that means that it is a cheap Joytech hub with the rt. rear bearing inboard. Makes for a poor hub.
The Colorado Cyclist would be a better buy in the long run. Weight is very overrated in performance on a bike. The important component is the engine.
davidad is offline  
Old 08-21-10, 04:35 PM
  #8  
HillRider
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,414

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 1896 Post(s)
Likes: 0
Liked 876 Times in 620 Posts
Originally Posted by MadBuddha1 View Post
Well most 7 speed derailers wont have the range to say accomodate a 12-29 9 speed cassette, it'll shift fine through most of the gears because you're correct about the indexing being in the shifters but the cage and spring etc is only so long, just saying to visually check the range of the RD sans chain before installing the shift cables
I've never come across a Shimano "7-speed" rear derailleur that wouldn't sweep the full width of a 8, 9 or 10-speed cassette. All you have to do is adjust the limit screws correctly. At the moment, I have a bike with a 7-speed STX rear derailleur with an 8-speed cassette using 105 8-speed brifters and it shifts just fine.
HillRider is offline  
Old 08-21-10, 04:43 PM
  #9  
Jon130
Junior Member
Thread Starter
 
Join Date: Apr 2010
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Not so concerned about weight. I just will not spend $400 on a wheelset for this bike. Will find something cheap/used on Craigslist or eBay if I can't find a set that fits with what the bike is/is worth.
Jon130 is offline  
Old 08-21-10, 04:52 PM
  #10  
Jon130
Junior Member
Thread Starter
 
Join Date: Apr 2010
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Just curious about the Xero and Maddux wheels. Don't know much about them, but these appear to be spec'd on 2008 Cannondale Synapse Feminine 5 and 6. Can they really be that bad or weak?
Jon130 is offline  
Old 08-22-10, 02:02 AM
  #11  
dabac
Senior Member
 
Join Date: Mar 2008
Posts: 8,688
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 1073 Post(s)
Liked 289 Times in 216 Posts
Originally Posted by HillRider View Post
I've never come across a Shimano "7-speed" rear derailleur that wouldn't sweep the full width of a 8, 9 or 10-speed cassette.
+1

Although I've doubted it sometimes when dealing with low-end derailers w/integrated hangers.
dabac is offline  
Old 08-22-10, 08:58 AM
  #12  
Al1943
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Posts: 9,438

Bikes: Trek 5500, Colnago C-50

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 4 Times in 3 Posts
I upgraded a friends 7-speed RSX equipped bike to 9-speed by rebuilding the rear wheel with a new 105 hub and shifters, and new Ultegra 12-27 cassette and chain. Shifting was perfect using the old RSX deraillers and crankset. Only minor adjustments were needed. The same should be possible with upgrading to 10-speed.
Al1943 is offline  
Old 08-22-10, 09:52 AM
  #13  
wrk101
Thrifty Bill
 
wrk101's Avatar
 
Join Date: Jan 2008
Location: Mountains of Western NC
Posts: 23,259

Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more

Mentioned: 88 Post(s)
Tagged: 0 Thread(s)
Quoted: 1143 Post(s)
Liked 686 Times in 481 Posts
10 speed spacing is 130mm, 7 speed is 126mm. Wider hubs are not a good idea on an aluminum frame bike. Your choice. I would just replace the rim, and keep going. The RSX stuff was pretty decent.
wrk101 is offline  
Old 08-22-10, 09:02 PM
  #14  
JTGraphics
Senior Member
 
JTGraphics's Avatar
 
Join Date: Dec 2006
Location: So Cal
Posts: 2,678
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have an old Cannondale (much older than yours) that was 7 speed with downtube shifters which I upgraded to 10 speed before installing the Utegra RD I was using the 105 RD which was setup on 7 speed that came with the bike and it worked fine with te 10 speed setup. You can see it here https://www.jtgraphics.net/cannondale_sr500.htm so it does work first hand experence here with that.
__________________
It may not be fancy but it gets me were I need to go.
https://www.jtgraphics.net/cyclist_bicycles.htm
JTGraphics is offline  
Old 08-27-10, 11:06 AM
  #15  
Jon130
Junior Member
Thread Starter
 
Join Date: Apr 2010
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Wrk101 - You're correct on the speeds/spacing, but luckily this bike was made right about the time that the 8-speeds were starting to catch on. I'm pretty sure, since Cannondale used the same frame for the R300, R400, etc., that they just made them all 130mm spacing. The new wheels dropped right in with no issues.

I installed the new wheelset, cassette, chain, shifters, new cables and housing, brake pads, and bar tape last night. Everything is working surprisingly well for that many changes in an evening. Still getting the front and rear shifting fully dialed in, but the bike is MUCH better than it was. I went into detail about this in another post and I'm honestly just too lazy at the moment. Minor issues though. Everything else is perfect. The Xero wheelset actually exceeded my expectations, especially given their $85 price tag. They are definitely not race wheels, but they feel similar to the Shimano RS10 wheels that came on my Cannondale but without the front wheel flex (probably because they are 650c). I'm sure there's still some flex in the front wheel as the ride feels much smoother and controlled even over rough pavement, but that's not a bad thing. We'll see how well the hubs hold up on these. But for $85, I'm willing to replace some cartridge bearings every now and then. I wouldn't hesitate to buy these wheels again based on the price and initial quality.

Here are some pics. Seat still needs to go. Bars will likely be painted black to contrast silver tape. Left 105 shifter yet to be installed because it's being swapped out for the triple by Shimano. Frame will likely be powdercoated in a blue stardust shortly.

Bike Stuff 007..jpg

Bike Stuff 008..jpg
Jon130 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
toddkilgore
Bicycle Mechanics
23
07-22-16 01:36 PM
linberl
Bicycle Mechanics
12
07-06-16 11:00 PM
rhouse
Bicycle Mechanics
5
03-29-16 07:34 PM
waldick
Bicycle Mechanics
24
11-23-12 11:43 PM
Orrery
Bicycle Mechanics
5
07-27-11 11:02 AM

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.