Gearing in my dirt car

Old 02-15-2009, 11:49 AM
  #1  
dgordner
Member
JUNIOR BUILDER
Thread Starter
 
Join Date: Sep 2003
Location: Watsontown Pa.
Posts: 73
Default Gearing in my dirt car

I need to know the gearing in my circle track dirt car. I have a three speed saganal with a 390 rear in the car. Can I turn the the driveshaft in 2nd gear (that is the gear I run) and do some kind of counting of revolutions to the back wheels? If so, how do I do it?
dgordner is offline  
Old 02-15-2009, 12:06 PM
  #2  
TopspeedLowet
Senior Member
DYNO OPERATOR
 
Join Date: Apr 2008
Posts: 504
Default

Turn the input shaft in each gear and count the input revolutions to what it takes to turn the out put shaft one revolution. This will give you a ratio for each gear, if it takes 3.75 turns on the input shaft for one revolution in the out put you have 3.75 to one ratio. etc... if you are only interested in the final gear ratio you can leave the drive shaft in and count the inputs to one revolution at the axle. Or multiply the 3.90 by the trans gear ratio if you prefer.
TopspeedLowet is offline  
Old 02-16-2009, 01:11 PM
  #3  
dgordner
Member
JUNIOR BUILDER
Thread Starter
 
Join Date: Sep 2003
Location: Watsontown Pa.
Posts: 73
Default

Thank You!!
dgordner 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


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service