ORIGINAL: DaveBcool
I am running stock Tammy gearboxes and 480 motors.
I tried to install MPI 1:3 gear reductions, but they came with a 4mm shaft.
The closest pinions I could find were for 1/8" shaft.
I do not have the ability to accurately drill-out the pinions to fit .
I have ruined 4 pinions already.
I only need to shave between 1/2 and 1 second (at 25 feet) off my road speed times.
So, I figured dropping to a smaller pinion would give the the correct speed.<br type="_moz" />
<div style="margin: 0in 0in 0pt">You are talking about an US tank , like Sherman or Pershing ?</div><div style="margin: 0in 0in 0pt">Yeah , then the 8tooth pinion will do the trick .</div><div style="margin: 0in 0in 0pt">Or just the long can 380’s , most of you guys call them 480’s ( since some manufactures call them like that , which is not correct ) ,</div><div style="margin: 0in 0in 0pt">and just adjust your servo throw ( on which ever channel you have the throttle ) lower ,</div><div style="margin: 0in 0in 0pt">or use the dual-rate , if you have that ….</div><div style="margin: 0in 0in 0pt">which you will not find on the cheaper 4 channel transmitters .</div><div style="margin: 0in 0in 0pt">Then you have to make up a mechanical limitation on your stick .</div><div style="margin: 0in 0in 0pt">But the big debate about speed is mostly about all the German tanks ,</div><div style="margin: 0in 0in 0pt">since they are way to fast out of the box</div>