Hey guys looking to build a hand operated trailer mover that is silent to use loading the boat up at 3am

I need some help with a 3 stage shaft sprocket set up there will be a bottom sprocket on the wheels driveshaft, there will be 2 sprockets on a mid height shaft two different size sprocketsto convert the torque, than a top sprocket which a handle attaches to also the handle will need consideration on length as to easy the load

Will be using dirt bike front and rear sprockets some i have looked at the front are 6cm rears are 23cm

Anyone know the ratio or even the output in distance if i were to go with this drive combo

Top 6cm diameter to drive a mid 23cm diamter which will have another sprocket next to it on the same shaft 6cm diameter to a bottom final drive shaft sprocket of 23cm


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