R/C Tech Forums - View Single Post - TC3 Forum
Thread: TC3 Forum
View Single Post
Old 06-24-2014, 01:03 PM
  #12076  
angrymelon
Tech Master
iTrader: (1)
 
angrymelon's Avatar
 
Join Date: Aug 2008
Location: Portland, OR
Posts: 1,109
Trader Rating: 1 (100%+)
Default
Originally Posted by Cancun Tom
I have an early TC3. The trans ratio is: 2.5:1
So to obtain a FDR of 3.6 I would need to run a 72 T (48pitch) spur with a (48 pitch) 50T pinion......that just doesn't seem right??? Am I missing something here? My tires are 2.57"dia. so that would give a roll-out of 2.25"
I am able to get the lower ratios running these:

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXYGN4
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXYGN3

They are a direct bolt on. I then pair them with 34 to 37 tooth pinions. I did have to remove some of the webbing behind the motor mount to make room for the larger pinion.

-melon
angrymelon is offline  
Reply