Go Back  Bike Forums > Bike Forums > Classic & Vintage > Classic and Vintage Sales
Reload this Page >

ISO/WTB Suntour Ultra 7 freewheel

Notices
Classic and Vintage Sales Private Sales Only, no online storefronts. All prices must be quoted, we are not an auction site.

ISO/WTB Suntour Ultra 7 freewheel

Old 07-24-22, 09:10 AM
  #1  
75lechamp 
Full Member
Thread Starter
 
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 227

Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 59 Post(s)
Liked 407 Times in 113 Posts
ISO/WTB Suntour Ultra 7 freewheel

I am looking for a Suntour Ultra 7 freewheel, preferably with a 28T - either 13-28 or 14-28. English or ISO thread. Thanks for looking!

Andy
75lechamp is offline  
Old 07-24-22, 12:20 PM
  #2  
jeirvine 
Senior Member
 
jeirvine's Avatar
 
Join Date: Sep 2011
Location: Bethesda/Baltimore MD
Posts: 3,818

Bikes: '72 Moto Grand Record, '72 Gitane tandem, '72 Raleigh Super Course, '73 Raleigh Gran Sport, '73 and '76 Colnagos Super, '76 Fiorelli Coppi, '78 Raleigh SBDU Team Pro, '78 Trek 930, '81 Holdsworth Special 650B, '86 Masi GC, '87 Panasonic DX5000

Mentioned: 60 Post(s)
Tagged: 0 Thread(s)
Quoted: 713 Post(s)
Liked 355 Times in 204 Posts
Unless you are looking specifically for a Suntour, ultra 7 became the standard spacing for most 7s freewheels.
-j
__________________
The man who dies with the most toys…is dead. - Rootboy
jeirvine is offline  
Old 07-24-22, 01:40 PM
  #3  
jdawginsc 
Edumacator
 
Join Date: Jan 2018
Location: Goose Creek, SC
Posts: 4,656

Bikes: '87 Crestdale, '87 Basso Gap, '92 Rossin Performance EL-OS, 1990 VanTuyl, 1980s Losa, 1985 Trek 670, 1982 AD SLE, 1987 PX10, etc...

Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1495 Post(s)
Liked 1,420 Times in 985 Posts
Originally Posted by jeirvine View Post
Unless you are looking specifically for a Suntour, ultra 7 became the standard spacing for most 7s freewheels.
-j
Was ultra 7 spaced for 126? So a Regina Extra America 7 and America 92 SL have the same spacing as Ultra 7?

What were the 8 speed free wheels spaced?
__________________
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1980s Vanni Losa Cassani thingy, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981? Faggin, 1996ish Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe (most not finished of course)...need to not buy any more.





jdawginsc is offline  
Old 07-24-22, 02:51 PM
  #4  
clubman 
Youngman Grand
 
clubman's Avatar
 
Join Date: Jan 2010
Location: Nova Scotia
Posts: 8,302

Bikes: roadsters, club bikes, fixed and classic

Mentioned: 121 Post(s)
Tagged: 0 Thread(s)
Quoted: 2118 Post(s)
Liked 1,512 Times in 968 Posts
Originally Posted by jdawginsc View Post
Was ultra 7 spaced for 126? So a Regina Extra America 7 and America 92 SL have the same spacing as Ultra 7?

What were the 8 speed free wheels spaced?
They were made for 126 but the spacing was variable between a couple of cogs iirc
clubman is offline  
Likes For clubman:
Old 07-24-22, 03:06 PM
  #5  
jdawginsc 
Edumacator
 
Join Date: Jan 2018
Location: Goose Creek, SC
Posts: 4,656

Bikes: '87 Crestdale, '87 Basso Gap, '92 Rossin Performance EL-OS, 1990 VanTuyl, 1980s Losa, 1985 Trek 670, 1982 AD SLE, 1987 PX10, etc...

Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1495 Post(s)
Liked 1,420 Times in 985 Posts
Originally Posted by clubman View Post
They were made for 126 but the spacing was variable between a couple of cogs iirc
Which, with friction wouldn't really matter, I presume.
__________________
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1980s Vanni Losa Cassani thingy, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981? Faggin, 1996ish Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe (most not finished of course)...need to not buy any more.





jdawginsc is offline  
Likes For jdawginsc:
Old 07-24-22, 03:42 PM
  #6  
clubman 
Youngman Grand
 
clubman's Avatar
 
Join Date: Jan 2010
Location: Nova Scotia
Posts: 8,302

Bikes: roadsters, club bikes, fixed and classic

Mentioned: 121 Post(s)
Tagged: 0 Thread(s)
Quoted: 2118 Post(s)
Liked 1,512 Times in 968 Posts
Not knowing the OP's shifters, we're flying blind. I'll assume he knows what he wants.
I'm also assuming that 7 speed Ultra is the same as the Alpha model freewheels? Inquiring minds...
clubman is offline  
Old 07-24-22, 06:03 PM
  #7  
Dean51 
Senior Member
 
Dean51's Avatar
 
Join Date: Feb 2016
Location: Olympic Peninsula, WA
Posts: 582

Bikes: '82 Ron Cooper, '83 Allez, '86 Tommasini Racing, '86? Klein Quantum, '87 Ciocc Designer 84, '95 Trek 5500, '98 S-Works Mtb, '01 Allez

Mentioned: 33 Post(s)
Tagged: 0 Thread(s)
Quoted: 206 Post(s)
Liked 178 Times in 84 Posts
@75Iechamp I could probably fix you up.....I have a bunch of good NWN bodies, spacers for Ultra-7, and a heap of cogs. Get back to me a first ,and perhaps, a second choice for your ideal tooth count by position. I will get back to you with what I can provide and a shipped price. PM or Quick Reply as you wish.

FWIW, I run Ultra-7 on frames spaced at 126 mm.

Dean
__________________
Roll Me Up and Smoke Me When I Die
Dean51 is offline  
Likes For Dean51:
Old 07-24-22, 06:28 PM
  #8  
LittleGinseng 
lurking nightrider
 
LittleGinseng's Avatar
 
Join Date: Apr 2004
Location: NE Florida
Posts: 574

Bikes: '84 Lotus Supreme, '85 Club Fuji, '86 Schwinn Peloton, '87 DS Ironman Expert, '87 Maruishi Professional, '88 Takara

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 72 Post(s)
Liked 54 Times in 33 Posts
Originally Posted by clubman View Post
They were made for 126 but the spacing was variable between a couple of cogs iirc
8-speed was spaced for 130mm hubs. 7-speed was for hubs at 126mm for road bikes.
7-speed cog spacing varied between manufacturers. The spacing on a 7-speed Suntour would not be identical to, let's say, a Regina America 7-speed.
__________________
"If there hadn't been women we'd still be squatting in a cave eating raw meat, because we made civilization in order to impress our girl friends. And they tolerated it and let us go ahead and play with our toys." Orson Welles
LittleGinseng is offline  
Likes For LittleGinseng:
Old 07-25-22, 03:06 PM
  #9  
bikemig 
Senior Member
 
bikemig's Avatar
 
Join Date: Apr 2012
Location: Middle Earth (aka IA)
Posts: 19,566

Bikes: A bunch of old bikes and a few new ones

Mentioned: 169 Post(s)
Tagged: 0 Thread(s)
Quoted: 5510 Post(s)
Liked 2,447 Times in 1,571 Posts
Originally Posted by jdawginsc View Post
Was ultra 7 spaced for 126? So a Regina Extra America 7 and America 92 SL have the same spacing as Ultra 7?

. . .
The 7s work on 126 OLD but freewheel bodies do not have a uniform width (they vary a bit by manufacturer). That means that if installing a 7 speed freewheel on a bike for the first time, you may have have to tweak the drive side spacers a bit (and perhaps redish the wheel a tad) so that the chain doesn't rub the stay. If that is a problem, a quick fix is to insert a 1 mm spacer on the drive side and call it a day. Yes the wheel won't be perfectly centered but you'll still be able to ride it just fine.
bikemig is online now  
Old 07-25-22, 05:54 PM
  #10  
verktyg 
verktyg
 
verktyg's Avatar
 
Join Date: Jul 2006
Location: SF Bay Area
Posts: 4,004

Bikes: Current favorites: 1988 Peugeot Birraritz, 1984 Gitane Super Corsa, 1981 Bianchi Campione Del Mondo, 1992 Paramount OS, 1990 Bianchi Mondiale, 1988 Colnago Technos, 1985 RalieghUSA Team Pro, 1973 Holdsworth

Mentioned: 198 Post(s)
Tagged: 0 Thread(s)
Quoted: 1018 Post(s)
Liked 1,134 Times in 615 Posts
Freewheel Body Widths

Some Guestimated charts that I found online:


From Sheldon Brown RIP


Real life examples. I checked a milk crate full of freewheels and found the widths all over the place. Note: many freewheels have a 1mm to 2mm recess in the rear so you can measure that and subtract it from the width.



IRD used to publish the actual widths of their freewheels. The body widths on their most recent version, the Cyclone Mk 1 run wide and the 5 speed FWs use a 6 speed body minus the outer sprocket so you may as well buy their 6 speed! Rather ingenuous...


IRD Cyclone Mk 1 7 speed FW.



To muddy the water further, there was no REAL standard for the "D" width dimension on hubs. Suntour specified "More Than 36mm" "D" width. Some 7 speed FWs are almost 36mm wide!!! A 2mm recess gives you 34mm from the hub shoulder to the end of the axle. Ideally you should have about 4mm of clearance from the end of the FW body to the end of the axle.





Where this becomes a problem is when shifting off of the small sprocket, the chain can catch on the inside bottom of the seat stay. A fast and dirty fix is to add some spacers to the end of the axle but that throws the wheel dish off plus the wheel is no longer aligned with the dropouts.

A better solution is to file some clearance on the bottom of the seat stay. We did that on a lot of the better bikes that we sold plus I did it on all of the frames that I built.



Attn: Pastor Bob pastorbobnlnh

verktyg
__________________
Don't believe everything you think! History is written by those who weren't there....

Chas. ;-)


Last edited by verktyg; 07-25-22 at 06:26 PM.
verktyg is offline  
Likes For verktyg:
Old 07-25-22, 06:31 PM
  #11  
oneclick 
Senior Member
 
Join Date: Feb 2020
Posts: 2,048
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 763 Post(s)
Likes: 0
Liked 808 Times in 496 Posts
Originally Posted by verktyg View Post

Those look to be the very nice Vitus forged dropouts, they have that inward bend that helps with chain/freewheel clearance - and hence wheel removal/replacement.
oneclick is offline  
Likes For oneclick:
Old 07-28-22, 07:24 PM
  #12  
75lechamp 
Full Member
Thread Starter
 
Join Date: Feb 2014
Location: Arvada, Colorado
Posts: 227

Bikes: 1975 Motobecane LeChampion (silver lilac), 1974 Motobecane Grand Jubile (red/black); 1975 Motobecane Team Champion (orange); 1982 Pinarello Professional (Exorcist Green); 1974 Raleigh Professional MkIV mink blue, 1974 Motobecane Grand Record blk/red

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 59 Post(s)
Liked 407 Times in 113 Posts
Found one, thanks all!
75lechamp 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 - 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.