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

Upgrade from 5 sp to 7 sp

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.

Upgrade from 5 sp to 7 sp

Old 01-10-08, 05:43 AM
  #1  
drPD
Member
Thread Starter
 
drPD's Avatar
 
Join Date: Oct 2005
Location: Croatia
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Upgrade from 5 sp to 7 sp

I plan to upgrade multiple freehub 5 sp (14-18-21-24-28) to shimano 7 speed (11-13-15-18-21-24-28).

What modification I need to do:
1. Change right shifter to 7 sp,
2. Replace freehub from 5 sp to 7 sp,
3. I have 8 sp chain,
...

Best Regards,
PD.
drPD is offline  
Old 01-10-08, 06:58 AM
  #2  
Ex Pres 
#39
 
Ex Pres's Avatar
 
Join Date: Dec 2007
Location: Mountain Brook, AL
Posts: 7,058
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 324 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
#1. Yes
#2. Are you sure you have a 5s freehub and not a freewheel? Sounds like you need a new rear wheel.
#3. Will work fine

Your frame's rear triangle may need to be spread, also, and if you use the same rear wheel it will need to be redished.
__________________
72 Frejus, Holdsworth Record & special CNC / 74 Italvega NR / c80 ?French? / 82 Raleigh Intl MkII / 83 Trek 620 / 87 Centurion IM MV / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 10 Vassago Fisticuff

For Sale: Litespeed Classic 53cm / THIS POST
Ex Pres is offline  
Old 01-10-08, 07:36 AM
  #3  
bmalmquist
Wrench User
 
Join Date: Nov 2007
Posts: 125
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Bob Barker View Post
#1. Yes
#2. Are you sure you have a 5s freehub and not a freewheel? Sounds like you need a new rear wheel.
#3. Will work fine

Your frame's rear triangle may need to be spread, also, and if you use the same rear wheel it will need to be redished.
+1. That about covers every facet of updating. Check the usual sources (Sheldon Brown, Park, LBS) for directions on how to do it all.

Additionally, if your rear shifter is not indexed - i.e. friction based - then you can still use that. If it is a friction shifter, you can basically run any number of gears you want if you fulfill the other criteria.
bmalmquist is offline  
Old 01-10-08, 08:45 AM
  #4  
drPD
Member
Thread Starter
 
drPD's Avatar
 
Join Date: Oct 2005
Location: Croatia
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Bob Barker View Post
#1. Yes
#2. Are you sure you have a 5s freehub and not a freewheel? Sounds like you need a new rear wheel.
#3. Will work fine

Your frame's rear triangle may need to be spread, also, and if you use the same rear wheel it will need to be redished.
Yes, it is freewheel (my mistake).

1. It is MTB frame with 135 spacing (but I will check). Spreading frame is not neccessary.

2. "Rear wheel it will need to be redished" but in my LBS think it is not necessary ?!?
It is neccessary or not ?

3. Does my old RD (old SIS) will work with 11 tooth top gear?
drPD is offline  
Old 01-10-08, 09:14 AM
  #5  
thehammerdog
Senior Member
 
thehammerdog's Avatar
 
Join Date: Dec 2007
Location: NWNJ
Posts: 2,582

Bikes: Road bike is a Carbon Bianchi C2C & Grandis (1980's), Gary Fisher Mt Bike, Trek Tandem & Mongoose SS MTB circa 1992.

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 192 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Dude 5 speed? WOW!

What are we talking about here? Maybe just wait and buy a modern bike with 8-9-10 speeds.
What is th emain issue with why your changing it out
thehammerdog is offline  
Old 01-10-08, 11:19 AM
  #6  
Ex Pres 
#39
 
Ex Pres's Avatar
 
Join Date: Dec 2007
Location: Mountain Brook, AL
Posts: 7,058
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 324 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by drPD View Post
Yes, it is freewheel (my mistake).

1. It is MTB frame with 135 spacing (but I will check). Spreading frame is not neccessary.

2. "Rear wheel it will need to be redished" but in my LBS think it is not necessary ?!?
It is neccessary or not ?

3. Does my old RD (old SIS) will work with 11 tooth top gear?

135 OLD = no frame spreading and most likely no redishing as well

Can you find a 7 speed freewheel with an 11t cog? 12's are out there, 13's are common

Your RD should work, but there's really no way to tell for sure until you try it. (edited out)
__________________
72 Frejus, Holdsworth Record & special CNC / 74 Italvega NR / c80 ?French? / 82 Raleigh Intl MkII / 83 Trek 620 / 87 Centurion IM MV / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 10 Vassago Fisticuff

For Sale: Litespeed Classic 53cm / THIS POST

Last edited by Ex Pres; 01-10-08 at 11:28 AM.
Ex Pres is offline  
Old 01-10-08, 11:24 AM
  #7  
04jtb
Senior Member
 
04jtb's Avatar
 
Join Date: Mar 2007
Location: West Dorset, UK
Posts: 908

Bikes: 1983 Dawes Galaxy, 2006 Raleigh Airlite, 1982 Sun Solo (fixed)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by drPD View Post
3. Does my old RD (old SIS) will work with 11 tooth top gear?
Mine didn't when i put an 11 tooth top on my road bike (SIS derailleur) I had to buy a new one
__________________
Originally Posted by cc700 View Post
i jam my thumbs up and back into the tubes. this way i can point my fingers straight out in front to split the wind and attain an even more aero profile, and the usual fixed gear - zen - connectedness feeling through the drivetrain is multiplied ten fold because my thumbs become one with the tubing.
A group for all Dawes Galaxy owners to give and recieve information about them
http://flickr.com/groups/dawes_galaxy/

Last edited by 04jtb; 01-10-08 at 11:24 AM. Reason: typing error
04jtb is offline  
Old 01-12-08, 01:51 AM
  #8  
Manzanita
Junior Member
 
Join Date: Feb 2006
Location: Laramie, WY
Posts: 22

Bikes: Specialized Mountainbike & Surly LHT

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
2. "Rear wheel it will need to be redished" but in my LBS think it is not necessary ?!?
It is neccessary or not ?

The 7-speed freewheel is wider than the 5-speed you currently have. You will need to change the location of the spacers on the axle to install the new freewheel. This means that the wheel will have to be redished to get the axle centered again. I did this last year with an '84 Miyata.

-- Manzanita
Manzanita is offline  
Old 01-12-08, 08:00 AM
  #9  
Ex Pres 
#39
 
Ex Pres's Avatar
 
Join Date: Dec 2007
Location: Mountain Brook, AL
Posts: 7,058
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 324 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Manzanita View Post
The 7-speed freewheel is wider than the 5-speed you currently have. You will need to change the location of the spacers on the axle to install the new freewheel. This means that the wheel will have to be redished to get the axle centered again. I did this last year with an '84 Miyata.

-- Manzanita
Bet your Miyata didn't start with 135mm OLD.
__________________
72 Frejus, Holdsworth Record & special CNC / 74 Italvega NR / c80 ?French? / 82 Raleigh Intl MkII / 83 Trek 620 / 87 Centurion IM MV / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 10 Vassago Fisticuff

For Sale: Litespeed Classic 53cm / THIS POST
Ex Pres is offline  
Old 01-12-08, 09:27 AM
  #10  
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Posts: 29,168

Bikes: Catrike 559 I own some others but they don't get ridden very much.

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 1107 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by drPD View Post
Yes, it is freewheel (my mistake).

1. It is MTB frame with 135 spacing (but I will check). Spreading frame is not neccessary.

2. "Rear wheel it will need to be redished" but in my LBS think it is not necessary ?!?
It is neccessary or not ?

3. Does my old RD (old SIS) will work with 11 tooth top gear?
Most likely you'll have to add an additional spacer on the drive side of your hub. Otherwise the smallest rear cog will be too close to your dropout and the chain will rub. Once you do that whether or not you think that you need to redish the rear wheel is kind of a judgement call. Lots of bikes of that era came with rear wheels that weren't too precisely dished to begin with. Adding a few more millimeters on the drive side might put it out farther than I'd be comfortable with.
Retro Grouch is offline  

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

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.