Go Back  Bike Forums > Bike Forums > Singlespeed & Fixed Gear
Reload this Page >

Fixed Conversion - Sugino 75 Crank & What BB?

Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

Fixed Conversion - Sugino 75 Crank & What BB?

Old 12-06-08, 05:14 PM
  #1  
tete_eteinte
Junior Member
Thread Starter
 
Join Date: Dec 2008
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Fixed Conversion - Sugino 75 Crank & What BB?

Hi all,

I recently rediscovered an old Austro-Daimler AD Inter-10 in my garage and have been thinking of resurrecting it as a fixed-gear commuter/urban bicycle. Thankfully, the original paint and chrome is still in great condition, along with the seat and stem and headset.

Since it's a nice frame and I have some time coming up where I'll be able to work on it, I wanted to spend some time giving it a little TLC and fitting some quality components to it. What's irking me now is trying to figure out the correct bottom bracket/chainring/crankset thing...and dealing with the issue of proper chainline.

I'm interested in a Sugino 75 crankset and I've been watching Ebay trying to pick one up on the cheap(er), but am wondering if one has to use the expensive 75 BB or can get away with something else, something cheaper? Something sealed?

I see the 75 has a 109mm spindle for a proper 42mm chainline; would it be possible to use something like a Shimano UN-54 with this crank? I figure for that one extra mm I could shift the hub slightly and re-dish the wheel, since I'll need to do that anyway after I lose the cassette hub that's currently on there... Is there any reason why this wouldn't work? Has anyone done this?

One: The Shimano BB is a lot cheaper
Two: It's sealed (rain, snow, dirt, salt, egh...)
Three: I already have the tools to work with the Shimano style BB, but not those for the 75

Thoughts? Suggestions? I've seen some things about a Sugino "MS-68" BB, but haven't been able to find them for sale anywhere, nor any info about them on the Sugino site.
tete_eteinte is offline  
Old 12-06-08, 05:22 PM
  #2  
wtfnoob
Senior Member
 
Join Date: Sep 2008
Posts: 87
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Do you really need a high end track crankset on a commuter conversion?
wtfnoob is offline  
Old 12-06-08, 05:28 PM
  #3  
sake bomb
Senior Member
 
Join Date: Mar 2008
Location: Nor*Cal
Posts: 90

Bikes: Kilo TT

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Miche
Phil
Sugino 75

Do a search. This topic has been covered ad nauseum
sake bomb is offline  
Old 12-06-08, 05:41 PM
  #4  
tete_eteinte
Junior Member
Thread Starter
 
Join Date: Dec 2008
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Do I really need a high end track crank? No, but I do like the look of the 75's and feel that if I'm going to spend the money on something, I might as well make it worth it and chip in an extra buck to have it last for as long as I need it do; these components may or may not remain affixed to my Diamler forever.

Second: I've searched, yes, and I've come up with a lot of that -- 75, Phil, Miche... I've also heard about using a Campagnolo Centaur BB with the 75 crank... I'd like to know, specifically, if anyone else is using a Shimano UN-54 in this application?
tete_eteinte is offline  
Old 12-06-08, 07:05 PM
  #5  
droptop
Senior Member
 
Join Date: Feb 2008
Posts: 386
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
this was covered earlier this week in the 75 vs RD thread. just think ISO taper vs JIS taper... general consensus is that if you aren't going to get the 75 bb, stick with whatever taper you use first. DO NOT SWITCH BETWEEN THE TWO.
droptop is offline  
Old 12-06-08, 08:06 PM
  #6  
peabodypride
No plan.
 
peabodypride's Avatar
 
Join Date: May 2007
Location: PA
Posts: 2,744
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by tete_eteinte View Post
Do I really need a high end track crank? No, but I do like the look of the 75's and feel that if I'm going to spend the money on something, I might as well make it worth it and chip in an extra buck to have it last for as long as I need it do; these components may or may not remain affixed to my Diamler forever.

Second: I've searched, yes, and I've come up with a lot of that -- 75, Phil, Miche... I've also heard about using a Campagnolo Centaur BB with the 75 crank... I'd like to know, specifically, if anyone else is using a Shimano UN-54 in this application?
No one is using a Shimano BB on any Sugino 75 crank. You claim you read the threads, but you didn't pick up any knowledge from them. The whole point is that Sugino 75 is ISO taper, so it's wise to use an ISO tapered BB.
peabodypride is offline  
Old 12-06-08, 08:30 PM
  #7  
mihlbach
Senior Member
 
mihlbach's Avatar
 
Join Date: Dec 2005
Location: Long Island, NY
Posts: 6,518
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 57 Post(s)
Liked 1 Time in 1 Post
Originally Posted by peabodypride View Post
No one is using a Shimano BB on any Sugino 75 crank.
You are wrong.
mihlbach is offline  
Old 12-06-08, 08:31 PM
  #8  
RoyIII
Senior Member
 
RoyIII's Avatar
 
Join Date: Apr 2008
Location: Waxahachie, Texas
Posts: 508

Bikes: Gios Compact Pro 10 Chorus, Gios single speed, Pedal Force RS2 10 chorus, CAAD5 10 Centaur, Diamondback dirt bike, Fuji Fixed Gear.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I use a campy 111 on an RD.
RoyIII is offline  
Old 12-06-08, 08:35 PM
  #9  
peabodypride
No plan.
 
peabodypride's Avatar
 
Join Date: May 2007
Location: PA
Posts: 2,744
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by mihlbach View Post
You are wrong.
I know the old "the taper is only different length so you need a different length JIS BB" line. The bottom line is if a taper is ISO, use an ISO BB. Theres no good reason not to.
peabodypride is offline  
Old 12-06-08, 11:01 PM
  #10  
4doorhoor
misanthropist
 
4doorhoor's Avatar
 
Join Date: Oct 2007
Location: Shanghai OR
Posts: 472
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I would just get some nice dura ace road doubles second hand. Cheaper and more fitting for the conversion.
4doorhoor is offline  
Old 12-07-08, 08:57 AM
  #11  
dmg
Beautiful Member
 
dmg's Avatar
 
Join Date: Sep 2004
Location: Pittsburgh PA
Posts: 653
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by peabodypride View Post
I know the old "the taper is only different length so you need a different length JIS BB" line. The bottom line is if a taper is ISO, use an ISO BB. Theres no good reason not to.
Yeah, unless you want a sealed BB which anyone using a 75 on the road would, unless they're into overhauling their BB several times a year. The 75BB is not ISO, as has been gone over a zillion times. Neither a ISO or JIS taper is going to be completely correct, but will work fine as long as you stick with one, including the UN54 which I'm using.

You're still not going to see any of the advantages of a stiff crankset with a flexy old frame, but whatever - you're better off buying better parts and moving them to a better frame than buying garbage parts that you'll throw away. I would personally go for andel / kazane / alien cranks though - comparable quality, and much cheaper.
dmg is offline  
Old 12-07-08, 11:18 AM
  #12  
peabodypride
No plan.
 
peabodypride's Avatar
 
Join Date: May 2007
Location: PA
Posts: 2,744
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by dmg View Post
Yeah, unless you want a sealed BB which anyone using a 75 on the road would, unless they're into overhauling their BB several times a year.

Miche, which is adjustable, and Campy Veloce. Both are dirt cheap.
peabodypride is offline  
Old 12-07-08, 02:10 PM
  #13  
mihlbach
Senior Member
 
mihlbach's Avatar
 
Join Date: Dec 2005
Location: Long Island, NY
Posts: 6,518
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 57 Post(s)
Liked 1 Time in 1 Post
Originally Posted by dmg View Post
Yeah, unless you want a sealed BB which anyone using a 75 on the road would, unless they're into overhauling their BB several times a year.
Jesus Christ people. We've been over this 1000 times. Stop worrying about tapers, chainlines, and spindle lengths and just get the BB thats made for the cranks. People have been riding unsealed BBs for more than a century without problems. I haven't overhauled my 75bb in over a year..its as smooth as the day I installed it.
mihlbach 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.