Quote:
Originally Posted by OneKiwi
So got the new motor today... nice and shiny yah.
LRP x12 8.5 with the standard spur 87T what pinion should I run for a tight carpet track?
Manual said in a 2wd the ratio should be 8.5.1
Whats this and how do I work it out?
I have seen this explained before but cant remember where I saw it.
|
Final Drive Ratio = Spur/Pinion * Internal Drive Ratio
E.g 87/26*2.6 = 8.7 FDR. Not far off your 8.5.
I've run an 8.5 on a 26 pinion and found it about right on a tight carpet track. However, yesterday I ran a 9.5 with 27 pinion and this was as smooth as silk. To get the pinion to fit I had to lengthen the motor plate slots a few mm. Now the motor is just touching the chassis, so a 27T is about the max you'll get into a 210, with standard Spur.