2004 Maico 500 Rebuild Part 3: Splitting the cases
1,188 views · Published 31 March 2014 · 9:52 · Indexed 12 November 2026
Channel: Opferman Motors Dirtbiking · 2014 · Autos & Vehicles
I split the cases in this video. The current transmission has a 1st gear of 28 / 15 (1.87 ratio). This is a high ratio gear setup for 1st gear so in order to bring it down to an enduro/trail setup the secondary drive is (59 / 12 = 4.92 ratio). I have new 1st and 2nd gears that will bring the transmission to enduro rating. 1st gear is then 32 / 14 = 2.28 ratio. This means that (1.867 * 4.92 = 9.18) 9.18 / 2.28 = 4.02. Which means a 52 / 13 = 4, or 49 / 12 = 4.08; both will then match the gearing and bring up 5th gear to a higher speed. 20 / 23 is 5th gear (0.86 ratio with the rear setup currently is 4.27 rating. With the new setup it is 3.49 ratio; so a lot faster).
