Motorized Bicycle Engine Kit Forum  

Sponsors



Go Back   Motorized Bicycle Engine Kit Forum > Motorized Bicycle Mechanical Components > Hubs, Gearboxes, Sprockets and Chains

Hubs, Gearboxes, Sprockets and Chains Can't find 'em, grind em - hubs and transmissions, problems and modifications to make you run smooth and trouble free

Reply
 
Thread Tools Display Modes
  #1  
Old 05-08-2012, 06:40 PM
RicksRides's Avatar
RicksRides RicksRides is offline
Motorized Bicycle Elite Member
 
Join Date: Feb 2012
Location: osceola IN
Posts: 861
Default 420/428 chain/sprocket question

heres my question I know the 420 and 428 sprockets are interchangable one way. am I right that the difference is only chain width. One of my builds has a 420 sprocket on engine and a 428 on the rear tire do I use the 420 chain or a 428 chain? Anyone??? Thanks Rick.
Reply With Quote
  #2  
Old 05-08-2012, 06:45 PM
RicksRides's Avatar
RicksRides RicksRides is offline
Motorized Bicycle Elite Member
 
Join Date: Feb 2012
Location: osceola IN
Posts: 861
Default Re: 420/428 chain/sprocket question

Tried to use the chart but there are no seperations between everything and Im having a hard time with the chart it just blends together thru my eyes
Reply With Quote
  #3  
Old 05-08-2012, 08:32 PM
Bikeguy Joe's Avatar
Bikeguy Joe Bikeguy Joe is offline
Godfather of Motorized Bicycles
 
Join Date: Jan 2008
Location: Out in the wilds of Ashtabula County
Posts: 11,763
Default Re: 420/428 chain/sprocket question

A 420 and 428 chain are different in every dimension. If you HAVE to mix and match, I'd run the 420 chain. Not sure how it's gonna work though
__________________
If it ain't broke, and you mess with it long enough, IT WILL BE.
Reply With Quote
  #4  
Old 05-08-2012, 08:35 PM
Bikeguy Joe's Avatar
Bikeguy Joe Bikeguy Joe is offline
Godfather of Motorized Bicycles
 
Join Date: Jan 2008
Location: Out in the wilds of Ashtabula County
Posts: 11,763
Default Re: 420/428 chain/sprocket question

That was not right, they both have a 1/2" pitch.
Roller diameter is .306" vs. .335"
Between inner plates- 1/4" vs. 5/16"
Pin diameter- .156" vs .177
__________________
If it ain't broke, and you mess with it long enough, IT WILL BE.
Reply With Quote
  #5  
Old 05-08-2012, 10:13 PM
RicksRides's Avatar
RicksRides RicksRides is offline
Motorized Bicycle Elite Member
 
Join Date: Feb 2012
Location: osceola IN
Posts: 861
Default Re: 420/428 chain/sprocket question

thanks joe I been told i can use a sprocket from a mid 60s cb/cl 160 on the lifan 125 Ill cross reference them tomorrow as well as consulting the micro-fish drawings. I know you can mix n match some chains and sprockets. I just couldnt remember which ones. Thanx again
Reply With Quote
Reply

Thread Tools
Display Modes

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



All times are GMT -5. The time now is 06:18 AM.


Sponsors

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
MotorBicycling.com