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Wankel Rotary Engine Model

by jag, published

Wankel Rotary Engine Model by jag Nov 8, 2011

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Description

Most of the information that I used to design this came from this PDF: personal.utulsa.edu/~kenneth-weston/chapter7.pdf

I didn't get around to adding the intake/exhaust ports and spark plug.

There is a video of this thing here: flickr.com/photos/53725866@N07/6329093033/

Recent Comments

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Printed on MakerBot 2X, looks great! The crank handle could be just a hair longer, but i didn't see the DXF for that. Either weay it works and looks great!

ah wow this thing is huge!

Made this on a Mendel, little bit of sanding and it works great.

Then connected it to a Dremel and revved it up to 8000 rpm :)

And of course a video.

http://www.youtube.com/watch?v...

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License

Public Domain
Wankel Rotary Engine Model by jag is licensed under the Public Domain license.

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Instructions

Print one of each part (either print all the parts individually or print the crank & eccentric together)

Put the rotor and crank in the housing. Put the eccentric on the end of the crank.

Spin the crank.

Comments

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bobob5511 on Nov 4, 2013 said:

Printed on MakerBot 2X, looks great! The crank handle could be just a hair longer, but i didn't see the DXF for that. Either weay it works and looks great!

standupclothing on Jan 16, 2013 said:

ah wow this thing is huge!

freeman on Apr 2, 2012 said:

Made this on a Mendel, little bit of sanding and it works great.

Then connected it to a Dremel and revved it up to 8000 rpm :)

And of course a video.

http://www.youtube.com/watch?v...

Greymantalker on Nov 15, 2011 said:

Status update: was able to download dxf and import into Corel Draw and with lots of

massaging - it's ready for the laser... about 6 layers then assembly. ;)

jag on Nov 16, 2011 said:

You should post a derivative!

Greymantalker on Nov 14, 2011 said:

Thanks!!!! Anxious to give them a try!!

Greymantalker on Nov 10, 2011 said:

Would be worth a try... I could then import into Corel... don't need a handle... and it

wouldn't be as thick.. overall.. layers of 1/8" or 1/16" acrylic. and the sun gear would be

thicker and extend through a round hole in the bottom and set into the "handle" which is

just a circular piece with the same gear hole in the middle to "lock" the gear to to "handle".

When the "handle" is rotated, it rotates the sun gear and inturn moves the "triangle"...

and the triangle has a cover over it....

jag on Nov 10, 2011 said:

I uploaded some DXFs. Let me know how they work for you.

Greymantalker on Nov 10, 2011 said:

Great idea! Any chance of posting a DXF, SVG or CDR file for us Laser lovers? I could still

build up a 3D model from stacked acrylic or delrin and fashion a "flat" crank from acrylic on the

back with one simple DXF file... Thx, Gmt

jag on Nov 10, 2011 said:

I could probably export the DXF of the outlines of the various shapes. You would have to glue the gear to bottom layer of the housing.

I've never tried exporting DXFs from openscad though.

FuzzyWuzzie on Nov 9, 2011 said:

This is great! I've had my ToM for about a month and this is the first mechanism I've printed that I didn't have to modify in any way (I usually have to trim edges or expand holes, etc). Excellent design that is easily capable of showing how the mechanism works!

jag on Nov 9, 2011 said:

Which version did you print? The first one or the second one that had 14 teeth on the stationary gear? If it's the second version, the gear timing is off by a 1/4 tooth. I'm uploading a fixed version...

jag on Nov 8, 2011 said:

Of course, I didn't notice until after posting this that there is already one here: http://www.thingiverse.com/thi...

merlinjim on Nov 8, 2011 said:

Were you reading my comment on the rotor? http://www.thingiverse.com/thi... LOL

I was about to post where's the eccentric shaft, but I see it now! Post pictures when you get it printed!

jag on Nov 8, 2011 said:

I saw your comment, after I had started working on it. I was inspired by the blog post here: http://www.makerbot.com/blog/2...

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