What Is 0.6 Modular Gears?

[Needler56]

here's a newbie question, what are 0.6 modular gears? are those the same thing as 32 pitch gears?

[Blacque Jacque]

No, pitch & module are not the same.

32 pitch are imperial gears, module sizes are metric.

# Diametral pitch (d p )...... The number of teeth per one inch of pitch circle diameter.

# Module. (m) ...... The length, in mm, of the pitch circle diameter per tooth.

http://www.roymech.co.uk/Useful_Tables/Drive/Gears.html

[terry.sc]

A 0.6 module gear a metric gear, the equivalent imperial gear is a 42.333 pitch gear.

[94eg!]

On a related subject, can anybody explain why HPI advertises some of their pinions as follows: 64-pitch (0.4m). I know 64-pitch are not exactly the same as 0.4m, so what's the deal?

[GTodd]

On a related subject, can anybody explain why HPI advertises some of their pinions as follows: 64-pitch (0.4m). I know 64-pitch are not exactly the same as 0.4m, so what's the deal?

The pitch so fine that.4 and 64 will work together.

[WillyChang]

yeah they'll work together 'ok' but not perfect, better if its large spur & small pinion

if using a large pinion and small spur... they get a bit growly

[94eg!]

yeah they'll work together 'ok' but not perfect, better if its large spur & small pinion

if using a large pinion and small spur... they get a bit growly

Are you reffering to the size of the teeth? IE: it's better to have the larger teeth on the spur and the smaller teeth on the pinion...

[Lonestar]

Are you reffering to the size of the teeth? IE: it's better to have the larger teeth on the spur and the smaller teeth on the pinion...

what he means is you'd better use a small pinion with a large spur - ie 18 teeth pinion and 100 spur if you want (it's just an example) - to minimize the impact of the pitch mismatch.

Paul