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

Direct Drive Chainring Type?

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.

Direct Drive Chainring Type?

Old 01-29-21, 02:32 PM
  #1  
leadholder
Junior Member
Thread Starter
 
Join Date: Feb 2020
Location: N. California
Posts: 15

Bikes: Ritchey Road, 72 Windsor Pro, 94 Bridgestone MB1, 98 Kona Explosif, bunch of old Schwinns.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked 2 Times in 2 Posts
Direct Drive Chainring Type?

I recently purchased a mountain bike on Craigslist and it came with a Shimano Deore LX Crank (FC-M570) set up as a 1X drivetrain. The 4-Arm Adaptor (spider mount) was not used and in its place is a 34t chainring with the same eight spline interface as the 4-Arm Adaptor. Looking around I have yet to find a chainring with this type of interface. The chainring does not have any markings indicating it's origins or manufacturer. Does anyone know what type of chainring I have. I tried to upload photos but the forum said I have to have ten posts before I can attach photos?? Yes I am new to Bike Forums.
leadholder is offline  
Old 01-29-21, 04:35 PM
  #2  
2cam16
Senior Member
 
2cam16's Avatar
 
Join Date: Oct 2016
Location: San Mateo,Ca.
Posts: 3,965

Bikes: TRIMMED DOWN THE HERD

Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 973 Post(s)
Liked 610 Times in 426 Posts
Upload your pics to your member's album.
2cam16 is offline  
Old 01-29-21, 05:56 PM
  #3  
leadholder
Junior Member
Thread Starter
 
Join Date: Feb 2020
Location: N. California
Posts: 15

Bikes: Ritchey Road, 72 Windsor Pro, 94 Bridgestone MB1, 98 Kona Explosif, bunch of old Schwinns.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked 2 Times in 2 Posts
Pictures are in my member album. I think.
leadholder is offline  
Likes For leadholder:
Old 01-29-21, 06:16 PM
  #4  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 12,657

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 1337 Post(s)
Liked 554 Times in 419 Posts
Did you contact the seller to see if they have the parts?
Here's the doc-
https://si.shimano.com/pdfs/ev/EV-FC-M570-4-1763.pdf
Bill Kapaun is offline  
Old 01-29-21, 07:18 PM
  #5  
leadholder
Junior Member
Thread Starter
 
Join Date: Feb 2020
Location: N. California
Posts: 15

Bikes: Ritchey Road, 72 Windsor Pro, 94 Bridgestone MB1, 98 Kona Explosif, bunch of old Schwinns.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked 2 Times in 2 Posts
Thanks B.K. for the parts list. No luck with the seller. Were you able to see the photos I placed in my member album. I'm new to this (Forum) and not quite sure if my photos are available.
leadholder is offline  
Old 01-29-21, 07:47 PM
  #6  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 12,657

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 1337 Post(s)
Liked 554 Times in 419 Posts
If you can't get the part(s) you need, it looks like you'll simply have to get another crankset. Probably a new BB (Bottom Bracket) to match the crank too.
22-32-4x cranks are readily available for fairly cheap.
You can try a web search for the parts you need since you have the PN.
Likely, IF they are available, the cost is more than a new crank.
Bill Kapaun is offline  
Old 01-30-21, 06:19 AM
  #7  
zebede
Hello
 
zebede's Avatar
 
Join Date: Aug 2007
Location: Suncoast, Florida
Posts: 910

Bikes: n+1

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 105 Post(s)
Liked 20 Times in 18 Posts
Pictures from O.P. Album

Originally Posted by leadholder View Post
I recently purchased a mountain bike on Craigslist and it came with a Shimano Deore LX Crank (FC-M570) set up as a 1X drivetrain. The 4-Arm Adaptor (spider mount) was not used and in its place is a 34t chainring with the same eight spline interface as the 4-Arm Adaptor. Looking around I have yet to find a chainring with this type of interface. The chainring does not have any markings indicating it's origins or manufacturer. Does anyone know what type of chainring I have. I tried to upload photos but the forum said I have to have ten posts before I can attach photos?? Yes I am new to Bike Forums.


zebede is offline  
Old 01-30-21, 07:51 AM
  #8  
dsaul
Senior Member
 
Join Date: Jan 2013
Location: South Jersey
Posts: 1,901
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 572 Post(s)
Liked 419 Times in 291 Posts
That is an early version of Shimano's direct mount design. My research indicates that the M950/952 cranksets used the same interface, but the chainring is not quite as thick at the interface, so they may need a thin spacer under the lockring. Garbaruk still makes chainrings, because the M950/952 are popular with the vintage MTB crowd. https://www.garbaruk.com/shimano-xtr...tml?category=1
dsaul is offline  
Likes For dsaul:
Old 01-31-21, 11:01 AM
  #9  
leadholder
Junior Member
Thread Starter
 
Join Date: Feb 2020
Location: N. California
Posts: 15

Bikes: Ritchey Road, 72 Windsor Pro, 94 Bridgestone MB1, 98 Kona Explosif, bunch of old Schwinns.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked 2 Times in 2 Posts
Thanks dsaul for your information regarding compatable Shimano cranks and the great link to the Garbaruk website. Awesome!!
leadholder is offline  
Likes For leadholder:
Old 02-01-21, 02:10 AM
  #10  
Geepig
Senior Member
 
Geepig's Avatar
 
Join Date: Sep 2020
Location: Eastern Poland
Posts: 623

Bikes: Romet Jubilat x 4, Wigry x 1, Turing x 1

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 170 Post(s)
Liked 148 Times in 115 Posts
Back in the day I would go to my local bike shop or Halfords and buy a chain for my single speed or 5-speed derailleur bikes.

Nowadays I have no idea what I want for my single speed and 3-speed/5-speed derailleurs, only that I need to replace them soon.

Where does one start?
Geepig is offline  
Likes For Geepig:

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.