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The rotor itself is only governed by the rotor radius and is symetrical through 120 degress at each side,

the rotor flanks limiting radius is found by using an equation which i found to be simply...

the shape follows a function....its not really as arc or radius that can be meausred.....

i basically have 360 points that i can traverse through on a G01 and take the middle section that is left...

im building a small wankel rotary project for my ME course

im trying to code up the best way to mill out the housing shape....

i was planning on just following X and Y co-ord but it will leave...

soo over the past few weeks i have been making progress on this project....bearing in mind i only get 3 hours class time a week to work on this

but the CNC code was written up and debugged to...

oh yes i see....i never thought of the gear eccentricity

the inernal gear has a PCD of 72 and the stationary spur gear is PCD 48......PCD diameter from centre of teeth on both.....that would leave...

my apologies...that must have been a mistake...take a look at the excel spreadsheet where e is 11mm and R is 70mm

the dimensions are plotted onto the graph to show the housing shape

what is the...

my R/e ratio is 70/11 = 6.36?

the rotor depth will have to be increase in order to correctly flatten the flanks enough to prevent fouling....as of yet we have no plans to add apex seals and are...

thanks for your reply....keep in mind that this will never be a running engine and is for display and demonstration purposed only.

but i am a bit puzzled as you mention the geometry of the...

sizes as of yet are not finalized but are subject to the internal gear size that i have ordered for the project being 100mm overall diameter that i am challenege'd with designing a interference fit...

i'm a bit of noob when it comes to excel but have managed to make up a spread sheet to define the shape of the housing for CNC code purposes.

this was done using the formula i found above and the...

yes please....

i am interested to see what information you have found

hello all....didnt know where to post this so threw it in here...if needs be higher powers can move it

in my second year in college and been asked to come up with a small project, the problem is...

im a mechanical engineering student in 2nd year...

looking for information concerning a wankel rotary project and always get thrown back to here so thought id sign up