Gear ratio help please

[vic008]

Turned the front coupling 10 revolution-back coupling turned 4 plus 295 degree revolution (presume this is ahead- both coupling go same direction)
Turn front 10 revolution and back coupling does 4 revolutions plus 235 degrees. What is the gear ratio please (its a Droffin gearbox)

 

[Plevier]

I make that 2.075:1 forward and 2.15:1 reverse.

 

[Graham_Wright]

Turned the front coupling 10 revolution-back coupling turned 4 plus 295 degree revolution (presume this is ahead- both coupling go same direction)
Turn front 10 revolution and back coupling does 4 revolutions plus 235 degrees. What is the gear ratio please (its a Droffin gearbox)

10 revolutions in = 3600°
4 revolutions +295° out = 1735°
Ratio = 3600/1735 = 2.075.

10 revolutions in = 3600°
4 revolutions + 235° = 1675°
Ration = 3600/1675 = 2.15.

I think

 

[macd]

2.07:1
2.15:1

PS Woops...beaten to it. But it seems pretty unanimous.

 

[Plevier]

Shock - unanimity breaks out on ybw forum!

Oops nearly anyway now 3rd post appeared.

 

[macd]

Shock - unanimity breaks out on ybw forum!

Oops nearly anyway now 3rd post appeared.

But if Rocna made gearboxes...

(3rd post in complete agreement...just don't see why anyone would need ratios to three decimal places.)