gear box ???

[Harry007bangers]

please can you help me out to what gear box with the tag id number of 75 AA AA FNZ 7 J 28 ? i beliv its a rocket box but with shorter gear linkage on top of the box but tail shaft same lenght as rocket type box , many thanks for help Terry 

[colr6]

You would be very lucky to find a rocket box these days especially with the tag still on it. Is the box out ?

[Harry007bangers]

yes i have the box out , i been told its from an austrialian rs2000 as were the gear stink is its got detachable bell housing has 23 teeth on input shaft and my prop fitts the tailshaft , the casing nubers i have aswell i fitted new seals to it as the ones i got fitted the old ones were metal , the tail shaft casing number 72AA-7A039_AA , main casing number 71 WG 7006 AC if this can be of any help , many thanks 

[colr6]

If you select 1st gear and count the revolutions of input shaft to 1 revolution of output shaft you can determine which box you have. Do it a couple of times to ensure accuracy. Put it this way if you get 3 turns plus of input shaft to 1 turn of output is a std box.

[Harry007bangers]

ok will try this thanks