Doyle Rotary Update

No matter what the final outcome of your project may be, your design and the execution of this design in your shop is a true work of art. If your design works it will be because of the thought and craftsmanship that you have put into it.

I agree with Greg. Thanks for keeping us posted.

Here are two links to the Mercer engine and to a further development of it as a steam engine more than 40 years ago.

http://books.google.de/books?id=wSoDAAAAMBAJ&pg=PA45&lpg=PA45&dq=Austin#v=onepage&q=Austin&f=false Mercer, pg 45

http://books.google.de/books?id=oSkDAAAAMBAJ&pg=PA86&dq=Mercer#v=onepage&q=Mercer&f=false Revolber-like steam engine continued from Mercer, Pg 84 and up,

You can read up on some of the problems they had then that may apply at least in part to your development. Did you calculate the centrifugal forces? These rise quickly as you know and I think they are adding too much load limiting speed and therefore power output. If you want get back to me in a reply.

Hello Guest

First I want to thank you for taking the time to evaluate the Doyle Rotary and to look for some potential problems that we may have overlooked.

It is easy to develop a case of tunnel vision. Someone looking in from the outside can often see things that we may not.

We have looked at several areas that may be affected by forces associated with RPM.

We ran a stress test on the outer housing segments and was able to make them about 40% stronger and at the same time we removed 2.2 lbs from the outer housing by adding strategically placed ribs and pockets.

We looked at how the airflow through the engine might be affected. During the intake stroke centrifugal force will help charge the cylinders with a few extra pounds of pressure depending on the RPM.

The centrifugal pressure will not have much of an effect on the other three strokes because they work at much higher pressures.

I do not completely understand what you are referring to when you say "load limiting speed". Did I cover this or is there something I am not understanding?