Hey guys,
I was curious as to whether anyone has ever published / figured out the ACTUAL gear ratios of the popular HL-based aftermarket gearboxes. 

For example the number of motor rotations required for a single rotation of the output shaft.

I can guarantee that between the Asiatam, Taigen, HL and Mato "3:1" gears there is a significant difference in ratio. Same goes for a few of the "4:1" gears, which judging from pictures, are similar in ratio to the 3:1!

I'd like to know, because most of the time I've wanted slow, high torque tanks because of our field conditions, but lately I'm very tempted to make something fast..

There is a formula I use in the boat industry for gear ratios it should be the same for all gear ratios that happen throu out life aside from planetary gear sets they have a special formula to figure them out because there is 3 different ratios possible and a revese for each planatary set

Formula .....the # of teeth on driven gear divided by # of teeth on drive gear note this does not apply to planatarys

bay area tankers has a really good calculator to figure out your tank speed
http://www.bayareatankers.org/Intelligence/Article_09/Scale_Tank_Speed_Calulations_Table_.htm
if your bored and you need to crunch some numbers

Cool

Ive been searching around the gearbox market, and although I really don't need a set I've found a few examples of 'newer' heavy duty sets, including a 'standard' HL ration with steel gears and bearings on rctank.de, but those guys are pricey.

Curtis I really like the set you had and I think Knipsel purchased, very smooth,



Any idea who MAKES these? 

made by Heng Long my friend ( Well they are the ones that brand them, like everything from Asia it would be impossible to tell you who actually does make them.

By the way I will be constantly stocking them, Knispels was the last set I had but I have more on order, should be here in about a week.
I think I am going to try and move a bigger pinion in one set just to see how the speed will get reduced.

The waltersons gear set I'm my Sherman is extramly smooth its all brass