What makes a mod1 pinion mod 1?

[mikerobinson83]

Hi i am trying to find out as much about pinions as possable as i am looking to design some of my own (i am a mechanical engineering student so i have access to the machines needed to make a couple of prototypes) i am going to start with mod 1 pinions as this is what i use in my converted lightning 10.

i know it has something to do with the tooth sizes but am unsure what in partcular i am looking at.

Thanks for all your help Mike

[blue_pinky]

Making your own gears...not as simple as it looks...but if you get the tooth profile's sorted then your away!!!

Some useful info HERE (http://www.hpcgears.com/newpdf/technical_gearing.pdf) about the modulus...have fun!!!

[mikerobinson83]

thanks i am doing it over the summer to pass some time, currently doing research before a 3d cad model then a plastic prototype to test fitments before making from hardened steal I know its not going to be easy but i like a challenge.just need to find out a bit more about the maths involved then I will get cracking on the calculations. looking at that at least I don't need to do calculus (I have just had a full term of calculus and I need to let my brain recover)

[teamxray]

http://www.hpcgears.com/newpdf/technical_general.pdf

try looking here

[blue_pinky]

What CAD package are you modelling in?

I probably have a ProEngineer tooth form (& gear) for that matter that could be a useful starting point...it'd have the correct involute equation in it to drive the tooth shape if it was useful?

[mikerobinson83]

it would be in autocad 2010 as we that is the software i have as autodesk give it to students free of charge.

there are loads of add ons so i am sure i can find one that will help with the specific task.

i will look at pro engineer, do you know if it compatible with autocad?

thanks again mike

[blue_pinky]

The involute curve equation I've used will be of no use in autocad, doh!

[mikerobinson83]

aint that just the way? i have had a look at pro/engineer and its about £4500 too expensive.

[SlowOne]

Module is the metric version of diametral pitch (DP), see http://en.wikipedia.org/wiki/Module_(gears)#The_module_system for the details. HTH :)

[mikerobinson83]

Thank you for all your help,never thought wikipedia would ever correct information,i have also found a good book from the uni library so when i have moved house this weekend, and finished rebuilding my cars (major maintinance for the summer) i will get cracking,i will post a thread in the i made this section to let you all know how i get on.:thumbsup:

Mike