XRAY - Model racing cars

Hi all,

Just wondered if anyone has a gear chart for the T4 showing the max / min - spur / pinion gear range.

eg. total combine spur + pinion (48dp) = 115 max combination.

So that I can purchase the best range of spur gear / pinion to suit all motors.

Or will the T3 gearing chart still work for the T4 (including the allowance for the non chamfered motors hitting against the topdeck)

Thanks
Stuart

Hi the drive train is the same as T3 and therefore gear ratios.
I have spreadsheet in excel but system does not allow upload of that file but if you use calculation pinion/spur*internal ratio of 1.9 to populate excel of any other spreadsheet you can make your own.
If you then take Pi* diameter of tyre to calculate circumfrence of tyre you can work out mm per rpm.

Hope that helps
Pete

Just tried fitting pinions with the kit spur (84t, 48dp).

Trying to get at the pinion set screw with the motor in it's position is a pain in the ar$e, the hole underneath, just like the T3'12 in central, trouble is, now the motor is more central, so is the pinion. It's teeth are right above the hole.

So far I have removed the motor and put the pinion on, once the edge of the pinions I use (RW Racing) is flush with the face of the pinion shaft I know it will line up perfectly.

On the plus side;
Using the new mount I managed to get a 35t pinion (4.56fdr) down to a 15t (10.64fdr) before the motor started fouling on the layshaft mount. It's on the limit of access to the motor screws though

with a large pinion it can touch the screw of the motormount