Gearing

Old 10-04-2010, 09:21 AM
  #1  
Tech Rookie
Thread Starter
 
Join Date: Sep 2010
Posts: 4
Default Gearing

I was wondering how you know that you have the right gear on your car besides just looking at your lap times. i have a lrp x-12 and dont want to ruin it because i don't know where it should be.
cullen1607 is offline  
Old 10-04-2010, 09:52 AM
  #2  
Tech Regular
 
darrenoakley's Avatar
 
Join Date: Oct 2009
Location: Dorset UK
Posts: 266
Default

Originally Posted by cullen1607 View Post
I was wondering how you know that you have the right gear on your car besides just looking at your lap times. i have a lrp x-12 and dont want to ruin it because i don't know where it should be.
Temp it after a couple of minutes and then again after 4 if it comes off cold you could add teeth till you get the speed you want. It also depends alot on the speedo you are using it with and the track too. Do you have long straights or mainly twisty and tight sections.
darrenoakley is offline  
Old 10-04-2010, 10:09 AM
  #3  
Regional Moderator
 
CarbonJoe's Avatar
 
Join Date: Jul 2006
Posts: 2,664
Default

Depending on the speedo, you most likely want to run the -4 dot insert (take motor timing away), especially if you run timing advance/boost/turbo in the ESC. The X-12s are very tolerant of heat (they seem to like to run close to 200 degrees). Ask some racers at your local track what gearing they are running to get a ballpark rollout/FDR/gearing. Then check your temps, and adjust accordingly.

What class are you running and what motor? 1/12 scale, TC? 17.5? 1s or 2s LiPo? What ESC?
CarbonJoe is offline  
Old 10-04-2010, 11:27 AM
  #4  
Tech Rookie
Thread Starter
 
Join Date: Sep 2010
Posts: 4
Default

im running 1/10th rubber TC. i have a 17.5t motor and a lrp ai brushless reverse esc with a 2s lipo.
cullen1607 is offline  
Old 10-04-2010, 05:42 PM
  #5  
Regional Moderator
 
CarbonJoe's Avatar
 
Join Date: Jul 2006
Posts: 2,664
Default

Not being familiar with that ESC, here is what I was running with a Tekin with V2.03 firmware

17.5 V2.03
LRP X-12 -4 dot insert
Gearing 35/110 5.34 FDR
Timing Boost 45
Turbo 10
Sensored checked
Turbo Delay 0.0
Turbo Ramp 3.0
Start RPM 2721
End RPM 10001

Motor would come off after 6 minutes at 195 degrees. Very fast. If that ESC doesn't have timing boost, etc, you'll have to gear up (lower FDR - either bigger pinion or smaller spur).
CarbonJoe is offline  
Old 10-05-2010, 10:19 AM
  #6  
Tech Rookie
Thread Starter
 
Join Date: Sep 2010
Posts: 4
Default

what pitch is your car
cullen1607 is offline  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Trackbacks are On
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.