Originally Posted by
ShaunMac
Tower Hobbies has HPI 10x12x0.2mm washers. Stock#Z892
The HOT61089 does include the T-nut.
To get a 4.0 FDR you could run a 90T spur with a 54T pinion. There are many combinations you could use.
90/54 x 2.43 = 4.05 FDR
I would be easier to get some 18T pulleys and new belts to hit the low FDR's
Then you dont have to have such big pinions, and smaller spurs..... I cant find any 64P pinions over 47 in stock
